JP2004021677A - Information providing system, information providing method, information providing program and computer-readable recording medium recorded with its program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an information providing system and method for making it unnecessary to resume validation or utterance even when any erroneous recognition is generated, for acquiring retrieval information equivalent to the case that it is necessary to resume validation or utterance, for certainly acquiring a retrieval result necessary for a user even in response to a keyword which is difficult to validate, and for providing the retrieval result in an order necessary for the user or its close order when a plurality of retrieval results are obtained, an information providing program and a computer readable recording medium with the information providing program recorded. <P>SOLUTION: A plurality of candidates are extracted without specifying recognition results into one. Then, a retrieval formula is generated based on those candidates, and retrieval processing is carried out. Furthermore, the scores of the retrieval formula is calculated from scores at the time of recognition, and the retrieval result is presented according to this. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an information providing system, an information providing method, an information providing program, and a computer-readable recording medium storing the information providing program.
[0002]
[Prior art]
At present, databases are becoming larger due to the spread of IT and the spread of the Internet. Also, with the spread of mobile phones and the like, there is a growing need to access such information anytime from anywhere and obtain information.
[0003]
In addition, a system has been developed in which a search keyword is input by voice, the search is performed, and the results are output by voice. In many cases, there is no search result from the retrieved search formula, so that it is effective to make the keyword selection redundant.
[0004]
[Problems to be solved by the invention]
However, when retrieving a large-scale database by voice, recognition accuracy may be reduced due to a large vocabulary.
[0005]
In addition, when erroneous recognition occurs, it is necessary to present and confirm the next candidate or to repeat the utterance.
[0006]
For this reason, in the conventional information providing system, such cases increase, and it takes time to accomplish the task, and the user is burdened.
[0007]
In addition, when the vocabulary becomes a large vocabulary, the number of similar words increases, and the user cannot surely confirm. As a result, a search may be performed using an incorrect keyword.
[0008]
The present invention has been made in order to solve the above-described problems of the related art, and even if erroneous recognition occurs, there is no need to perform confirmation or utterance again, and it is equivalent to the case where there is confirmation and utterance again. That the search accuracy is obtained, that even for keywords that are difficult to confirm, that the search results required by the user are reliably obtained, and that when multiple search results are obtained, An object of the present invention is to provide an information providing system, an information providing method, an information providing program, and a computer-readable recording medium on which the information providing program can be provided, which can provide search results in a close order.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, an information providing system according to the present invention generates a speech recognition unit for recognizing an input speech and a plurality of search formulas each having a priority from a recognition result by the speech recognition unit. Search formula generation means, search means for searching a database by the plurality of search formulas, search result rearranging means for rearranging search results by the search means according to priority order, priority order wherein the priority order is equal to or higher than a predetermined threshold value Information output means for outputting a search result based on the search formula.
[0010]
Further, the information providing system according to the present invention, a voice recognition means for recognizing the input voice, a search formula generation means for generating a plurality of search formulas each having a priority from the recognition result by the voice recognition means, A search formula rearranging unit for rearranging the plurality of search formulas according to their priorities; a search unit for performing a database search by a search formula having a priority higher than a predetermined threshold among the plurality of search formulas; Information output means for outputting a search result by the search means.
[0011]
Further, the information providing method according to the present invention, a voice recognition step of recognizing the input voice, a search formula generation step of generating a plurality of search formulas each having a priority from the recognition result in the voice recognition step, A search step of searching a database by the plurality of search expressions; a search result sorting step of sorting search results in the search step according to priority; and the search expression in which the priority is a priority equal to or higher than a predetermined threshold. An information output step of outputting a search result.
[0012]
Further, the information providing method according to the present invention, a voice recognition step of recognizing the input voice, a search formula generation step of generating a plurality of search formulas each having a priority from the recognition result in the voice recognition step, A search formula rearranging step of rearranging the plurality of search formulas according to their priorities; and a search step of performing a database search by a search formula having a priority higher than or equal to a predetermined threshold among the plurality of search formulas, An information output step of outputting a search result in the search step.
[0013]
Further, the information providing program according to the present invention comprises: a speech recognition unit for recognizing input speech; and a search formula generation unit for generating a plurality of search formulas each having a priority from recognition results by the speech recognition unit. A search unit for searching a database by the plurality of search formulas; a search result sorting unit for sorting search results by the search unit according to a priority; and the search formula wherein the priority is a priority higher than a predetermined threshold. Function as an information output means for outputting a search result by.
[0014]
In addition, the information providing program according to the present invention includes: a speech recognition unit that recognizes input speech; and a search formula generation unit that generates a plurality of search formulas each having a priority from recognition results obtained by the speech recognition unit. A search formula rearranging means for rearranging the plurality of search formulas according to their priorities, a search means for performing a database search using a search formula having a priority higher than a predetermined threshold among the plurality of search formulas, The information processing device functions as an information output device that outputs a search result by the search device.
[0015]
Further, the computer-readable recording medium on which the information providing program according to the present invention has been recorded is a computer-readable recording medium for recognizing an input voice, a plurality of voice recognition units each having a priority from the recognition result by the voice recognition unit. Search expression generating means for generating a search expression, search means for searching a database by the plurality of search expressions, search result sorting means for sorting search results by the search means according to priority, and the priority is a predetermined threshold An information providing program that functions as an information output unit that outputs a search result based on the search expression having the above-mentioned priority order is recorded.
[0016]
Further, a computer-readable recording medium on which the information providing program according to the present invention has been recorded, a computer recognizes a plurality of voices each having a priority, Search expression generating means for generating a search expression, search expression rearranging means for rearranging the plurality of search expressions according to their priorities, and a database using a search expression having a priority of a predetermined threshold or more among the plurality of search expressions. And an information providing program for functioning as an information output means for outputting a search result by the search means.
[0017]
Here, the priority order is determined based on the score and order of the keywords included in each voice, and the weight of each attribute set in advance. The determination of the priority will be described in detail below.
[0018]
The method according to the present invention, which can be used to determine the priority of the recognition result.
The “keyword score” is a numerical value that is output from a voice recognition unit (hereinafter, also referred to as a recognition engine) and that indicates the reliability of each recognition result. This value is calculated inside the recognition engine.
[0019]
Next, the “ranking order of keywords” that can be used for determining the priority order of recognition results in the present invention will be described. A recognition engine generally outputs a plurality of recognition results. Each of the plurality of recognition results is given the above-mentioned score, whereby the order of certainty of the recognition result can be determined.
[0020]
How many recognition results are output can be set. However, if the score is too low, the recognition result is not obtained, and the recognition result of a set number or less may be obtained.
[0021]
Next, the “weight for each attribute” that can be used to determine the priority of the recognition result in the present invention will be described.
[0022]
The “weight for each attribute” is set for each application, and indicates which attribute keyword is likely to be uttered in a certain scene where voice recognition is performed.
[0023]
For example, it is assumed that the attribute A is 80% and the attribute B is 20% as a result of analyzing the attribute of the keyword spoken in the past by the application.
[0024]
At this time, if the keyword of the recognition result is the attribute A, multiply by 0.8, and if the keyword is the attribute B, multiply by 0.2.
[0025]
Next, a method of determining a priority order according to the present invention will be described. When the score of a certain recognition result A is X and the weight of the attribute B is Y, the score of the retrieval formula obtained by the recognition result is calculated by X × Y. The order with the highest score is the order with the highest priority.
[0026]
When a certain utterance includes a plurality of keywords, the score is the sum of the respective search formulas (X × Y).
[0027]
Example: Buy two tickets from Station A to Station B at Station A
* About station name
Attribute X “Nearby station”: Station name within 10 stations from station B. Tokyo, Kanda ...
Attribute Y “distant station”: Station name other than the above. Takasaki, Urawa, Kyoto ...
And Assuming that the percentage of tickets sold at a nearby station is 70%, the attribute X is weighted at 0.7 and the attribute Y is weighted at 0.3.
[0028]
* Regarding the number
Attribute U "1": 1
Attribute V "plurality": two, three, ...
And Assuming that the ratio of selling one copy is 90%, the attribute U is weighted with 0.9 and the attribute V with 0.1.
[0029]
It is assumed that there is an utterance of the station name “Tokyo” and the number of sheets “1”, and the following recognition result is obtained.
[0030]
station name:
Recognition result # 1 "Kyoto" score 72 21.6
Recognition result # 2 "Tokyo" score 69 48.3
Number of sheets:
Recognition result # 1 "1" score 67 60.3
Recognition result # 2 "2" score 61 6.1
[0031]
Here, numerical values, such as 21.6, 48.3, 60.3, and 6.1, after the above-mentioned score mean the selling ratio (frequency of appearance) of tickets.
[0032]
Then, as a table associating the ratio of receiving the ticket with the weight, for example, the following table can be cited.
[0033]
[Station name table]
Station name Number of tickets issued Ratio to total number of tickets issued
Tokyo 3924 48.3
Kyoto 1755 21.6
Shin Osaka 1285 15.8
Nagoya 873 10.7
...
Total 8124 100.0
[0034]
[Number table]
Number of tickets issued Number of tickets issued
1 3564 60.3
3 1933 32.7
2 361 6.1
...
Total 5910 100.0
[0035]
In the above example, the “ratio to the total number of issued tickets” and “ratio to the total number of issued tickets” are used as weights.
[0036]
And the final score calculation method,
"Final score = recognition score + coefficient x weight"
Such a method is also conceivable. Basically, the recognition score is emphasized, and a coefficient of about 0.1 is often appropriate. Of course, the coefficient is not limited to 0.1, and another numerical value can be adopted. Then, under the above conditions, each search formula is as follows.
[0037]
Search formula # 1 "Station name = Kyoto and number of sheets = 1"
Search formula score = 72 * 0.3 + 67 * 0.9 = 81.9
Search expression # 2 "Station name = Kyoto and number of sheets = 2"
Search formula score = 72 * 0.3 + 61 * 0.1 = 27.7
[0038]
Search expression # 3 "Station name = Tokyo and number of sheets = 1"
Search formula score = 69 * 0.7 + 67 * 0.9 = 108.6
Search expression # 4 "Station name = Tokyo and number of sheets = 2"
Search formula score = 69 * 0.7 + 61 * 0.1 = 54.4
[0039]
After all, the priority of the search expression is
Search formula # 3 "Station name = Tokyo and the number of sheets = 1" 108.6
Search formula # 1 "Station name = Kyoto and number of sheets = 1" 81.9
Search formula # 4 "Station name = Tokyo and number of sheets = 2" 54.4
Search formula # 2 "Station name = Kyoto and number of sheets = 2" 27.7
It becomes.
[0040]
BEST MODE FOR CARRYING OUT THE INVENTION
Preferred embodiments of the present invention will be illustratively described in detail below with reference to the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the components described in this embodiment are not intended to limit the scope of the present invention thereto unless otherwise specified. Absent.
[0041]
In the following drawings, parts that are the same as the parts described in the aforementioned drawings are given the same reference numerals. In addition, the description of each embodiment of the information providing system according to the present invention described below includes the information providing method, the information providing program, and the computer-readable recording medium storing the information providing program according to the present invention. Also serves as an explanation.
[0042]
(First Embodiment of Information Providing System)
Hereinafter, a first embodiment of an information providing system according to the present invention will be described with reference to the drawings.
[0043]
First, an outline of an operation of the information providing system according to the first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a conceptual diagram showing a first example of a concept of a search from a plurality of recognition results in the first embodiment of the information providing system according to the present invention, and FIG. 2 is an information providing system according to the present invention. FIG. 11 is a conceptual diagram showing a second example of a concept of a search from a plurality of recognition results in the first embodiment.
[0044]
First, a first example of a concept of a search from a plurality of recognition results in the first embodiment of the information providing system according to the present invention will be described with reference to FIG. As shown in FIG. 1A, it is assumed that the utterance of the user is composed of “A” and “1”.
[0045]
At this time, the part “A” is the part of the first utterance, and is also referred to as slot 1 below. Similarly, the part “1” is the part of the second utterance, and is also referred to as slot 2 hereinafter.
[0046]
In the example illustrated in FIG. 1, the user's utterance is described as being composed of two parts. However, in the present embodiment, the number of the user's utterances is not limited to two but may be two. Any number above may be used.
[0047]
Next, as shown in FIG. 1B, the information providing system of the present embodiment recognizes “A” and “B” as recognition results of a portion corresponding to slot 1, and similarly, It is assumed that “4” and “1” are recognized as the recognition result of the portion corresponding to slot 2. Note that these “A”, “B”, “1”, and “4” actually represent arbitrary words.
[0048]
In slot 1 and slot 2 of the recognition result, the first place recognition result is “A” and “4”, respectively, and the second place recognition result is “B” and “1”.
[0049]
Next, in the present embodiment, as shown in FIG. 1C, both “A” and “B” are used as search targets for slot 1, and “1”, “4” are used as search targets for slot 2. Are used.
[0050]
As a result, as shown in FIG. 1D, when the information providing system of the present embodiment searches the database, a search result corresponding to the utterance of the user is output.
[0051]
That is, if only the first-ranked recognition result is used in the recognition results shown in FIG. 1B, the search formulas are only those corresponding to “A” and “4”. 1), the search result is zero, but in the present embodiment, the search result corresponding to the utterance of the user can be output by using the search formula shown in FIG. it can.
[0052]
Next, a second example of a concept of a search from a plurality of recognition results in the first embodiment of the information providing system according to the present invention will be described with reference to FIG.
[0053]
However, in the description of FIG. 2, the description of FIGS. 2 (a), 2 (b), and 2 (c) is based on the description of FIGS. 1 (a), 1 (b), and 1 (c). The description is omitted here.
[0054]
In the second example of the search concept shown in FIG. 2, unlike the first example described above, portions corresponding to "B" and "4" are added to the database shown in FIG. 2D.
[0055]
As a result, when the database is searched using the search formula shown in FIG. 2C, not only the search results of “A” and “1” but also “B” and “4” as shown in FIG. Is output and presented to the user.
[0056]
Although the search results of “B” and “4” are incorrect recognition results for the user, more search results can be provided to the user, and as a result, search speed and accuracy can be improved. .
[0057]
As described above, in the search concept of the present embodiment, the database is searched after a plurality of conditions are input. However, many search conditions generated from words that are not the original recognition result will not produce a search result.
[0058]
Then, the data which is incorrectly included in the search result and is not the original purpose is presented to the user, and the correct data is selected. This is faster than making a mistake and starting over.
[0059]
Next, the configuration of the first embodiment of the information providing system according to the present invention will be described with reference to FIG. FIG. 3 is an overall configuration diagram of the first embodiment of the information providing system according to the present invention.
[0060]
The first embodiment of the information providing system according to the present invention includes a voice input unit 301 to which voice is input, and a voice recognition unit 302 that outputs one or more recognition results 303 from the input voice.
[0061]
Further, the information providing system of the present embodiment performs a search expression generation unit 304 that generates a search expression 305 from the input recognition result 303 and searches the database 307 using the search expression 305 generated by the search expression generation unit 304. And a search unit 306 for performing the search.
[0062]
Here, when generating a search formula from a plurality of voices recognized by the voice recognition unit 302, the search formula generation unit 304 may generate a search formula based on a combination of all recognized voices.
[0063]
In addition, the information providing system of the present embodiment includes a search result sorting unit 309 that sorts the search results 308 from the search unit 306 according to a certain priority. In the present embodiment, a score is used as a priority as described below.
[0064]
Further, the information providing system of the present embodiment includes an information output unit 310 that outputs the search results sorted by the search result sorting unit 309.
[0065]
Next, the operation of the first embodiment of the information providing system according to the present invention shown in FIG. 3 will be described with reference to FIG. FIG. 4 is a flowchart of the operation of the information providing system shown in FIG.
[0066]
Here, in the flowchart shown in FIG. 4, the search formula is E (n), its score is S (n), and the search result is R (n). n is the number of the equation. When N is the number of the equation, n = 1, 2,..., N. The threshold value of the score as to whether or not to use the search formula is St.
[0067]
As shown in FIG. 4, in the first embodiment of the information providing system according to the present invention, first, the voice recognition unit 302 performs voice recognition based on the voice input to the voice input unit 301 (S401). .
[0068]
Next, the search formula generation unit 304 generates a search formula (E (n)) 305 based on the recognition result 303 output from the speech recognition unit 302 (S402).
[0069]
Next, the search unit 306 executes a search of the database 307 using the search formula (E (n)) 305 (S403).
[0070]
Next, the search result sorting unit 309 sorts the search results (R (n)) 308 output by the search unit 306 in descending order of their scores (S (n)) (S404).
[0071]
Next, the information output unit 310 substitutes 1 for n (S405), and the score S (n) of each search result R (n) sorted by the search result sorting unit 309 is equal to or higher than a predetermined threshold score St. Is determined (S406).
[0072]
Here, the information output unit 310 may perform the operation of S406 based on the number of search results searched by one search formula, and add a score according to the number. For example, as the number of search results obtained by one formula increases, the search results by the search formula are output with higher priority.
[0073]
Then, the information output section 310 outputs R (n) if S (n) ≧ St (S407), and ends the operation if S (n) ≧ St.
[0074]
Next, the information output unit 310 increments n by 1 (S408), determines whether n is greater than N (S409), and if not n or greater than N, repeats the processing from S406 to S409, If n is greater than N, the operation ends.
[0075]
(Operation Example of First Embodiment)
Next, a more specific operation example of the first embodiment of the information providing system according to the present invention will be described below.
[0076]
·task
Consider a case where a search is performed by inputting two keywords.
First keyword = Classification
Second keyword = name
Assume that Then, it is assumed that the user has uttered classification = “animal” and name = “lion”. The system shall output a detailed description for the keyword.
[0077]
・ Recognition result
Recognition result of the first utterance
1st place: keyword = animal, score = 70
2nd place: keyword = plant, score = 65
Recognition result of second utterance
1st place: keyword = radish, score = 71
2nd place: Keyword = Lion, Score = 62
[0078]
・ Search formula
The score of each search formula is calculated as the sum of the scores of each recognition result.
Search formula 1: Classification = “animal” and name = “radish”, score = 141
Search Formula 2: Classification = “animal” and name = “lion”, score = 132
Search formula 3: Classification = “plant” and name = “radish”, score = 136
Search formula 4: Classification = “plant” and name = “lion”, score = 127
[0079]
・ Search result output
Number of search results
Search expression: 1
Search expression 2: 1 item "Description of animal lion" Score 132
Retrieval formula 3: 1 item “Description of plant radish” Score 136
Search expression 4: 0
[0080]
Here, in the above search results, the number of cases is 0 or 1 in each search formula, but the number of search results is not limited to 0 or 1 and the number of cases is other than 0 or 1 There is also.
[0081]
Output contents
The search results are sorted by score and output.
First output: "Description of radish of plant"
Second output: "Description of animal lions"
[0082]
Then, when the target information is obtained, the user can interrupt the output there. In the case of this operation example, the task is completed with the second output.
[0083]
It should be noted that when the user determines that the desired search result has been obtained and the user performs some input, the subsequent output may be canceled to complete the task.
[0084]
As described above, in the first embodiment of the information providing system according to the present invention, even if an erroneous recognition is used in a search expression, it is not necessary to perform confirmation or re-utterance.
[0085]
In addition, in the first embodiment of the information providing system according to the present invention, when erroneous recognition is used as a search formula, it is possible to obtain the same search accuracy as when confirmation or utterance is repeated. it can.
[0086]
Further, in the first embodiment of the information providing system according to the present invention, even if the vocabulary is difficult to confirm, a search formula can be generated from a plurality of recognition results, so that the user needs a high possibility. You can get search results.
[0087]
In the first embodiment of the information providing system according to the present invention, when a plurality of search results are obtained, the results are sorted and output in the order of the score, so that the order is the same as or close to the order required by the user. , The search result can be provided.
[0088]
As a result, in the first embodiment of the information providing system according to the present invention, a recognition result is output from a voice, a search expression is generated from each recognition result, and the search result is generated based on a score of the generated search expression. Because the search results are output, multiple search results may be output, so the number of times of checking the recognition results can be reduced, search omissions can be reduced, and correct search results can be obtained even from multiple search results. Can get faster.
[0089]
(Second Embodiment of Information Providing System)
Next, a second embodiment of the information providing system according to the present invention will be described with reference to the drawings.
[0090]
First, the concept of the search from a plurality of recognition results in the second embodiment of the information providing system according to the present invention will be described with reference to the search of the first embodiment described with reference to FIGS. Since the concept is the same as the first example or the second example of the concept, the description is omitted.
[0091]
Next, the configuration of an information providing system according to a second embodiment of the present invention will be described with reference to FIG. FIG. 5 is an overall configuration diagram of a second embodiment of the information providing system according to the present invention.
[0092]
The second embodiment of the information providing system according to the present invention includes a voice input unit 501 to which voice is input, and a voice recognition unit 502 that outputs one or more recognition results 503 from the input voice.
[0093]
In addition, the information providing system of the present embodiment includes a search expression generation unit 504 that generates a search expression 505 from the input recognition result 503.
[0094]
Here, when generating a search formula from a plurality of voices recognized by the voice recognition unit 502, the search formula generation unit 504 may generate a search formula using a combination of all recognized voices.
[0095]
Further, the information providing system of the present embodiment includes a search expression sorting unit 506 that sorts the search expressions 505 in the order of scores, which are priorities.
[0096]
Further, the information providing system of the present embodiment includes a search unit 508 that searches the database 509 using the search expression 507 output from the search expression sorting unit 506.
[0097]
Further, the information providing system of the present embodiment includes an information output unit 511 that outputs the search result 510 output from the search unit 508.
[0098]
Next, the operation of the second embodiment of the information providing system according to the present invention shown in FIG. 5 will be described with reference to FIG. FIG. 6 is a flowchart of the operation of the information providing system shown in FIG.
[0099]
Here, in the flowchart shown in FIG. 6, the search formula is E (n), its score is S (n), and the search result is R (n). n is the number of the equation. When N is the number of the equation, n = 1, 2,..., N. The threshold value of the score as to whether or not to use the search formula is St.
[0100]
As shown in FIG. 6, in the second embodiment of the information providing system according to the present invention, first, the voice recognition unit 502 performs voice recognition based on the voice input to the voice input unit 501 (S601). .
[0101]
Next, the search formula generation unit 504 generates a search formula (E (n)) 505 based on the recognition result 503 output by the speech recognition unit 502 (S602).
[0102]
Next, the search expression sorting unit 506 sorts the search expression (E (n)) 505 in descending order of S (n), and outputs a search expression 507.
[0103]
Next, the search unit 508 substitutes 1 for n (S604), and determines whether or not the score S (n) of each search result R (n) is equal to or greater than a predetermined threshold score St (S605). ).
[0104]
Then, the search unit 508 proceeds to S606 if S (n) ≧ St, and ends the operation if S (n) ≧ St.
[0105]
In S606, the search unit 508 performs a search of the database 509 with E (n), and outputs a search result R (n) 510 to the information output unit 511.
[0106]
Next, the information output unit 511 outputs the search result R (n) (S607).
[0107]
Next, the information output unit 511 increments n by 1 (S608), determines whether n is larger than N (S609), and if n is not larger than N, repeats the processing from S606 to S609. If n is greater than N, the operation ends.
[0108]
(Operation Example of Second Embodiment)
Next, a more detailed operation example of the second embodiment of the information providing system according to the present invention will be described below.
[0109]
·task
Consider a case where a search is performed by inputting two keywords.
First keyword = Classification
Second keyword = name
Assume that Then, it is assumed that the user has uttered classification = “animal” and name = “lion”. The system shall output a detailed description for the keyword.
[0110]
・ Recognition result
Recognition result of the first utterance
1st place: keyword = animal, score = 70
2nd place: keyword = plant, score = 65
Recognition result of second utterance
1st place: keyword = radish, score = 71
2nd place: Keyword = Lion, Score = 62
[0111]
・ Search formula
The score of each search formula is calculated as the sum of the scores of each recognition result.
Search formula 1: Classification = “animal” and name = “radish”, score = 141
Search Formula 2: Classification = “animal” and name = “lion”, score = 132
Search formula 3: Classification = “plant” and name = “radish”, score = 136
Search formula 4: Classification = “plant” and name = “lion”, score = 127
In this operation example, the above search expressions are sorted in descending order of score.
First rank Search formula 1: classification = “animal” and name = “radish”, score = 141
Second rank Search formula 3: classification = “plant” and name = “radish”, score = 136
Third rank Search formula 2: Classification = “animal” and name = “lion”, score = 132
Fourth ranking Search formula 4: Classification = “plant” and name = “lion”, score = 127
[0112]
・ Search result output
In this operation example, search results are output in the order of the sorted search results.
First rank search result Search expression 1: 0
Second-ranked search result Search formula 3: 1 item "Description of plant radish" Score 136
Third-ranked search result Search expression 2: 1 item “Description of animal lion” Score 132
4th rank search result 4: 0
[0113]
Here, in the above search results, the number of cases is 0 or 1 in each search formula, but the number of search results is not limited to 0 or 1 and is a number other than 0 or 1 There is also.
[0114]
Output contents
First output: "Description of radish of plant"
Second output: "Description of animal lions"
[0115]
Then, when the target information is obtained, the user can interrupt the output there. In the case of this operation example, the task is completed with the second output.
[0116]
It should be noted that when the user determines that the desired search result has been obtained and the user performs some input, the subsequent output may be canceled to complete the task.
[0117]
As described above, in the second embodiment of the information providing system according to the present invention, even if an erroneous recognition is used in a search formula, it is not necessary to perform confirmation or re-utterance.
[0118]
In addition, in the second embodiment of the information providing system according to the present invention, when an erroneous recognition is made, it is used as a search formula, so that a search system similar to that in the case where confirmation or utterance is performed again can be obtained. it can.
[0119]
Further, in the second embodiment of the information providing system according to the present invention, even if the vocabulary is difficult to confirm, a search formula can be generated from a plurality of recognition results, so that the user needs a high possibility. You can get search results.
[0120]
In the second embodiment of the information providing system according to the present invention, when a plurality of search results are obtained, they are sorted and output in the order of the score, so that the order is the same as or close to the order required by the user. , The search result can be provided.
[0121]
As a result, in the second embodiment of the information providing system according to the present invention, a recognition result is output from speech, a search formula is generated from each recognition result, and the search result is generated based on the score of the generated search formula. Because the search results are output, multiple search results may be output, so the number of times of checking the recognition results can be reduced, search omissions can be reduced, and correct search results can be obtained even from multiple search results. Can get faster.
[0122]
(Example of application of information providing system according to the present invention)
Next, an application example of each embodiment of the information providing system according to the present invention will be described with reference to the drawings. 7 is a schematic diagram of a first example of an application example of each embodiment of the information providing system according to the present invention shown in FIGS. 3 and 5, and FIG. 8 is a diagram according to the present invention shown in FIGS. FIG. 9 is a schematic diagram of a second example of an application example of each embodiment of the information providing system. FIG. 9 is a schematic diagram of a third example of an application example of each embodiment of the information providing system according to the present invention illustrated in FIGS. 3 and 5. FIG.
[0123]
(First example of application example)
In an application example 1 shown in FIG. 7, each embodiment of the information providing system according to the present invention includes a mobile phone 701, a base station 702, a network 703, a server 704, and a database 705.
[0124]
The mobile phone 701 is a terminal owned by the user, and can exchange information wirelessly via the base station 702.
[0125]
The base station 702 receives radio waves from the mobile phone 701 and transmits radio waves to the mobile phone 701.
[0126]
The base station 702 is connected to a server 704 via a network 703. The server 704 includes a database 705.
[0127]
The network 703 may use wireless in part or all.
[0128]
In the configuration shown in FIG. 7, the mobile phone 701 may have the functions of the voice input unit 301 and the information output unit 310 shown in FIG.
[0129]
In the configuration shown in FIG. 7, the server 704 may have the functions of the speech recognition unit 302, the search expression generation unit 304, the search unit 306, and the search result sorting unit 309 shown in FIG.
[0130]
Further, in the configuration shown in FIG. 7, the database 705 may have the function of the database 307 shown in FIG.
[0131]
On the other hand, in the configuration shown in FIG. 7, the mobile phone 701 may have the functions of the voice input unit 501 and the information output unit 511 shown in FIG.
[0132]
In the configuration shown in FIG. 7, the server 704 may have the functions of the speech recognition unit 502, the search expression generation unit 504, the search expression sort unit 506, and the search unit 508 shown in FIG.
[0133]
Further, in the configuration shown in FIG. 7, the database 705 may have the function of the database 509 shown in FIG.
[0134]
In the configuration shown in FIG. 7, a PDA, a mobile personal computer, or a car navigation system may be used instead of the mobile phone 701.
[0135]
Further, the number of the mobile phone 701, the base station 702, the server 704, and the database 705 is not limited to one, and may be any number of one or more.
[0136]
(Second example of application example)
In an application example 2 shown in FIG. 8, each embodiment of the information providing system according to the present invention includes a personal computer 802 having a microphone 801, a network 803, a server 804, and a database 805.
[0137]
The personal computer 802 is a terminal owned by the user, and can exchange information via the network 803.
[0138]
The personal computer 802 is connected to a server 804 via a network 803. The server 804 includes a database 805.
[0139]
In the configuration shown in FIG. 8, the microphone 801 may have the function of the voice input unit 301 shown in FIG. 3, and the personal computer 802 may have the function of the information output unit 310 shown in FIG.
[0140]
Further, in the configuration shown in FIG. 8, the server 804 may have the functions of the speech recognition unit 302, the search expression generation unit 304, the search unit 306, and the search result sort unit 309 shown in FIG.
[0141]
Further, in the configuration shown in FIG. 8, the database 805 may have the function of the database 307 shown in FIG.
[0142]
On the other hand, in the configuration shown in FIG. 8, the microphone 801 may have the function of the voice input unit 501 shown in FIG. 5, and the personal computer 802 may have the function of the information output unit 511 shown in FIG.
[0143]
In the configuration shown in FIG. 8, the server 804 may have the functions of the speech recognition unit 502, the search expression generation unit 504, the search expression sort unit 506, and the search unit 508 shown in FIG.
[0144]
Further, in the configuration shown in FIG. 8, the database 805 may have the function of the database 509 shown in FIG.
[0145]
In the configuration shown in FIG. 8, a part of or all of the network 803 between the personal computer 802 and the server 804 may use a wireless line.
[0146]
Also, the number of microphones 801, personal computers 802, servers 804, and databases 805 is not limited to one, and may be any number equal to or greater than one.
[0147]
(Third example of application example)
In an application example 3 illustrated in FIG. 9, each embodiment of the information providing system according to the present invention includes a server 904 including a microphone 901, a display 902, and a speaker 903, and a database 905.
[0148]
In the configuration shown in FIG. 9, the microphone 901 may have the function of the audio input unit 301 shown in FIG. 3, and the display 902 or the speaker 903 may have the function of the information output unit 310 shown in FIG. .
[0149]
Further, in the configuration shown in FIG. 9, the server 904 may have the functions of the speech recognition unit 302, the search formula generation unit 304, the search unit 306, and the search result sorting unit 309 shown in FIG.
[0150]
Further, in the configuration shown in FIG. 9, the database 905 may have the function of the database 307 shown in FIG.
[0151]
On the other hand, in the configuration shown in FIG. 9, the microphone 901 has the function of the voice input unit 501 shown in FIG. 5, and the display 902 or the speaker 903 has the function of the information output unit 511 shown in FIG. As good.
[0152]
Further, in the configuration shown in FIG. 9, the server 904 may have the functions of the speech recognition unit 502, the search expression generation unit 504, the search expression sort unit 506, and the search unit 508 shown in FIG.
[0153]
Further, in the configuration shown in FIG. 9, the database 905 may have the function of the database 509 shown in FIG.
[0154]
Note that, in the above-described application examples 1, 2, and 3, the distribution of functions of each unit illustrated in FIGS. 3 and 5 is illustrated, but this distribution is merely an example, and each unit illustrated in FIGS. The function may be according to a distribution other than the above distribution.
[0155]
Here, the configurations of the mobile phone 701 and the server 704 shown in FIG. 7 will be described with reference to FIGS. FIG. 10 is a block diagram of the internal configuration of the mobile phone 701 shown in FIG. 7, and FIG. 11 is a block diagram of the internal configuration of the server 704 shown in FIG.
[0156]
As shown in FIG. 10, the mobile phone 701 communicates with a predetermined fixed station via a digital wireless telephone line, so that it is possible to talk with another person.
[0157]
In FIG. 10, a CPU 1001 is a system controller having a microcomputer configuration, which controls the operation of each circuit and component shown in FIG.
[0158]
An antenna 1007 is connected to this mobile phone. A signal of a predetermined frequency band (for example, 800 MHz band) received by the antenna 1007 is supplied to a high-frequency circuit (hereinafter, referred to as an RF circuit) 1008 to be demodulated, and a demodulated signal is supplied to a digital processing unit 1009.
[0159]
The digital processing unit 1009 is called a digital signal processor (DSP), and performs various digital processing such as digital demodulation, and then converts the digital audio signal into an analog audio signal.
[0160]
In the digital processing in the digital processing unit 1009, a process of extracting a required slot output from a time-division multiplexed signal and a process of waveform-equalizing a digitally demodulated signal with an FIR filter are performed.
[0161]
Then, the converted analog audio signal is supplied to the audio circuit 1010, where analog audio processing such as amplification is performed.
[0162]
Then, the audio signal output from the audio circuit 1010 is transmitted to the handset unit 1011, and the audio is output from the speaker 1011 a incorporated in the handset unit 1011.
[0163]
In addition, the microphone 1011 b incorporated in the handset unit 1011 transmits an audio signal based on the audio acquired to the audio circuit 1010, performs analog audio processing such as amplification in the audio circuit 1010, and transmits the analog signal to the digital processing unit 1009.
[0164]
After being converted into a digital audio signal by the digital processing unit 1009, processing for transmission such as digital modulation is performed.
[0165]
The processed digital audio signal is transmitted to the RF circuit 1008 and is modulated to a predetermined frequency band (for example, 800 MHz band) for transmission. Then, the modulated wave is transmitted from antenna 1007.
[0166]
Note that a display unit 1012 such as a liquid crystal display is connected to the handset unit 1011 in this example, so that information such as various characters and images can be displayed.
[0167]
For example, the display of this display unit 1012 is controlled by data transmitted from the CPU 1001 via the bus line, and displays information about a call, such as a case where an image of an accessed homepage is displayed or a dialed number transmitted. In some cases, an operation for upgrading, which will be described later, is displayed.
[0168]
A key (not shown) for inputting a dial number or the like is attached to the handset unit 1011.
[0169]
The circuits 1008 to 1011 operate under the control of the CPU 1001. Then, a control signal is transmitted from the CPU 1001 to each of the circuits 1008 to 1011 via a control line.
[0170]
The CPU 1001 is connected to each of the EEPROM 1002, the first RAM 1003, and the second RAM 1004 via a bus line.
[0171]
In this case, the EEPROM 1002 is a memory exclusively for reading data, in which the operation program of the mobile phone is stored in advance. However, data in a part of the area can be rewritten under the control of the CPU 1001.
[0172]
The first RAM 1003 is a memory for temporarily storing data to be rewritten in the EEPROM 1002.
[0173]
The second RAM 1004 is a memory in which control data of the digital processing unit 1009 is stored.
[0174]
In this case, the bus line connected to the second RAM 1004 can be switched between the CPU 1001 and the digital processing unit 1009 via the bus switch 1006.
[0175]
The switching of the second RAM 1004 to the CPU 1001 by the bus switch 1006 is performed only when the operation program of the mobile phone is modified.
[0176]
Therefore, in other states, the first RAM 1003 is connected to the digital processing unit 1009.
[0177]
Further, a backup battery 1005 for preventing loss of stored data is connected to the second RAM 1004.
[0178]
On the other hand, in the present embodiment, externally received data can be input to the CPU 1001.
[0179]
That is, reference numeral 1013 in the figure denotes a connector for connecting to the outside, and data obtained by the connector 1013 can be transmitted to the CPU 1001.
[0180]
Next, an internal configuration of the server 704 shown in FIG. 7 will be described with reference to FIG. As shown in FIG. 11, the server 704 includes a CPU (Central Processing Unit) 1101, an input unit 1102, a main storage unit 1103, an output unit 1104, an auxiliary storage unit 1105, and a clock unit 1106.
[0181]
The CPU 1101 is a component as an alias processing unit, and includes a control unit 1107 which sends commands to each unit in the system and controls the operation thereof, and an arithmetic unit 1108 which performs digital data arithmetic processing in a central part of the server.
[0182]
Here, the CPU 1101 is used alone or in combination with other components shown in FIG. 11 or in cooperation with a program stored in the main storage unit 1103 or the auxiliary storage unit 1105. It functions as a voice recognition unit, a search expression generation unit, a search unit, a search result rearrangement unit, an information output unit, and a search expression rearrangement unit described in the range.
[0183]
The control unit 1107 reads the data input from the input unit 1102 or a predetermined procedure (for example, a program or software) into the main storage unit 1103 according to the timing of the clock generated by the clock unit 1106, and based on the read content. A command is sent to the arithmetic unit 1108 to perform arithmetic processing. The result of the arithmetic processing is transmitted to internal devices such as the main storage unit 1103, the output unit 1104, the auxiliary storage unit 1105, and external devices based on the control of the control unit 1107.
[0184]
The input unit 1102 is a component for inputting various data, and may be, for example, a keyboard, a mouse, a pointing device, a touch panel, a mouse pad, a CCD camera, a card reader, a paper tape reader, a magnetic tape unit, and the like. In the case of the present invention, for example, a voice input device such as a microphone can also be used.
[0185]
The main storage unit 1103 is a component that is also called a memory, and is a component that indicates an addressable storage space used for executing an instruction in the processing unit and the internal storage unit.
[0186]
The main storage unit 1103 mainly includes a semiconductor storage element, stores and holds input programs and data, and reads out the stored / held data into, for example, a register in accordance with an instruction from the control unit 1107.
[0187]
In addition, examples of the semiconductor storage element included in the main storage unit 1103 include a random access memory (RAM) and a read only memory (ROM).
[0188]
The output unit 1104 is a component for outputting a calculation result or the like of the calculation unit 1108, and includes, for example, a CRT, a plasma display panel, a liquid crystal display, and other display units, a printing unit such as a printer, and an audio output unit such as a speaker. I do.
[0189]
The auxiliary storage unit 1105 is a component for supplementing the storage capacity of the main storage unit 1103. The medium used for the auxiliary storage unit 1105 includes, for example, a CD-ROM, a hard disk, and a write-once system capable of writing information. CD-R, DVD-R, CD-RW, DVD-RAM, DVD + RW, PD of phase change recording system, recording medium of magneto-optical storage system, recording medium of magnetic recording system, recording medium of removable HDD system, flash A memory-based recording medium can be used.
[0190]
Here, the above components are interconnected by a bus 1109.
[0191]
Further, in the present embodiment, if there is an unnecessary part among the parts shown in FIG. 11, it can be appropriately deleted. For example, a display constituting the output unit 1104 may not be required, and in this case, the output unit 1104 may not be required in the present embodiment.
[0192]
Further, the number of the main storage unit 1103 and the auxiliary storage unit 1105 is not limited to one, and may be any number. As the number of the main storage unit 1103 and the auxiliary storage unit 1105 increases, the fault tolerance of the server improves accordingly.
[0193]
The various programs according to the present invention are stored (recorded) in at least one of the main storage unit 1103 and the auxiliary storage unit 1105.
[0194]
Therefore, a computer-readable recording medium on which the program according to the present invention is recorded may correspond to at least one of the main storage unit 1103 and the auxiliary storage unit 1105.
[0195]
As the database, not only the auxiliary storage unit 1105 may be used, but also a database server connected to the server may be used.
[0196]
In the above description, only the internal configuration of the server 704 shown in FIG. 7 has been described, but the internal configuration of the personal computer 802 and the server 804 shown in FIG. 8 and the server 904 shown in FIG. And the same description holds.
[0197]
In the description of the above embodiment, a score is used as a priority. However, this priority may be determined by, for example, a keyword ranking or a predetermined weight for each attribute other than the score.
[0198]
【The invention's effect】
As described above, according to the present invention, the number of times of checking the recognition result can be reduced, and the processing time and the burden on the user can be reduced.
[0199]
Also, according to the present invention, search omissions can be reduced.
[0200]
Further, according to the present invention, when a plurality of search results are obtained, a correct search result can be obtained quickly.
[Brief description of the drawings]
FIG. 1 is a conceptual diagram showing a first example of a concept of a search from a plurality of recognition results in a first embodiment of an information providing system according to the present invention.
FIG. 2 is a conceptual diagram showing a second example of a concept of a search from a plurality of recognition results in the first embodiment of the information providing system according to the present invention.
FIG. 3 is an overall configuration diagram of a first embodiment of an information providing system according to the present invention.
FIG. 4 is a flowchart of an operation of the information providing system shown in FIG. 3;
FIG. 5 is an overall configuration diagram of a second embodiment of the information providing system according to the present invention.
FIG. 6 is a flowchart of the operation of the information providing system shown in FIG. 5;
FIG. 7 is a schematic diagram of a first example of an application example of each embodiment of the information providing system according to the present invention shown in FIGS. 3 and 5;
FIG. 8 is a schematic diagram of a second example of an application example of each embodiment of the information providing system according to the present invention shown in FIGS. 3 and 5;
FIG. 9 is a schematic diagram of a third example of an application example of each embodiment of the information providing system according to the present invention shown in FIGS. 3 and 5;
FIG. 10 is a block diagram of an internal configuration of the mobile phone 701 shown in FIG.
11 is a block diagram of the internal configuration of a server 704 shown in FIG.
[Explanation of symbols]
301 Voice input unit
302 Voice Recognition Unit
303 Recognition result
304 Search expression generator
305 search expression
306 Search unit
307 database
308 search results
309 Search result sorting section
310 Information output unit
501 Voice input unit
502 Voice Recognition Unit
503 recognition result
504 search expression generation unit
505 search formula
506 Search expression sort part
507 search formula
508 Search unit
509 database
510 search results
511 Information output unit
701 mobile phone
702 base station
703 Network
704 server
705 database
801 microphone
802 PC
803 network
804 server
805 database
901 microphone
902 display
903 speaker
904 server
905 database
1001 CPU
1002 EEPROM
1003 First RAM
1004 2nd RAM
1005 Battery for backup
1006 Bus switch
1007 antenna
1008 High frequency circuit
1009 Digital processing unit
1010 Audio circuit
1011 Handset section
1011a speaker
1011b microphone
1012 Display unit
1013 connector
1101 CPU
1102 Input unit
1103 Main memory
1104 Output unit
1105 Auxiliary storage unit
1106 Clock section
1107 Control unit
1108 Operation unit
1109 Bus

Claims (8)

Voice recognition means for recognizing the input voice;
Search expression generating means for generating a plurality of search expressions each having a priority from the recognition result by the voice recognition means,
Search means for searching a database by the plurality of search expressions;
Search result sorting means for sorting the search results by the search means according to priority;
An information output unit configured to output a search result based on the search expression in which the priority is a priority equal to or higher than a predetermined threshold. Voice recognition means for recognizing the input voice;
Search expression generating means for generating a plurality of search expressions each having a priority from the recognition result by the voice recognition means,
A search formula rearranging means for rearranging the plurality of search formulas according to their priorities; and a search means for performing a database search by a search formula having a priority higher than a predetermined threshold among the plurality of search formulas,
An information providing system comprising: an information output unit that outputs a search result obtained by the search unit. A voice recognition process for recognizing the input voice;
A search expression generation step of generating a plurality of search expressions each having a priority from the recognition result in the voice recognition step;
A search step of searching a database with the plurality of search formulas,
A search result sorting step of sorting the search results in the search step by priority;
An information output step of outputting a search result based on the search expression in which the priority is a priority higher than or equal to a predetermined threshold. A voice recognition process for recognizing the input voice;
A search expression generation step of generating a plurality of search expressions each having a priority from the recognition result in the voice recognition step;
A search formula rearranging step of rearranging the plurality of search formulas according to their priorities; and a search step of performing a database search by a search formula having a priority higher than a predetermined threshold among the plurality of search formulas,
An information output step of outputting a search result in the search step. Computer
Voice recognition means for recognizing input voice,
A search expression generating unit configured to generate a plurality of search expressions each having a priority from the recognition result by the voice recognition unit;
Search means for searching a database by the plurality of search expressions;
Search result sorting means for sorting the search results by the search means according to priority;
An information providing program that functions as an information output unit that outputs a search result based on the search expression in which the priority is a priority equal to or higher than a predetermined threshold. Computer
Voice recognition means for recognizing input voice,
A search expression generating unit configured to generate a plurality of search expressions each having a priority from the recognition result by the voice recognition unit;
Search expression sorting means for sorting the plurality of search expressions according to their priorities;
A search unit that searches the database using a search expression having a priority order equal to or higher than a predetermined threshold value, among the plurality of search expressions; and
An information providing program functioning as information output means for outputting a search result by the search means. Computer
Voice recognition means for recognizing input voice,
A search expression generating unit configured to generate a plurality of search expressions each having a priority from the recognition result by the voice recognition unit;
Search means for searching a database by the plurality of search expressions;
Search result sorting means for sorting the search results by the search means according to priority;
A computer-readable recording medium recording an information providing program for functioning as an information output unit that outputs a search result based on the search expression in which the priority is higher than or equal to a predetermined threshold. Computer
Voice recognition means for recognizing input voice,
A search expression generating unit configured to generate a plurality of search expressions each having a priority from the recognition result by the voice recognition unit;
Search expression sorting means for sorting the plurality of search expressions according to their priorities;
A search unit that searches the database using a search expression having a priority order equal to or higher than a predetermined threshold value, among the plurality of search expressions; and
A computer-readable recording medium that records an information providing program that functions as an information output unit that outputs a search result by the search unit.

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