JP4978860B2 - 行動予測方法及び行動予測装置 - Google Patents
行動予測方法及び行動予測装置 Download PDFInfo
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- JP4978860B2 JP4978860B2 JP2007014220A JP2007014220A JP4978860B2 JP 4978860 B2 JP4978860 B2 JP 4978860B2 JP 2007014220 A JP2007014220 A JP 2007014220A JP 2007014220 A JP2007014220 A JP 2007014220A JP 4978860 B2 JP4978860 B2 JP 4978860B2
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- 230000003727 cerebral blood flow Effects 0.000 description 3
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Description
図1は脳活動を観測する観測手段としてのブレインキャップを示す模式図である。ブレインキャップ10は、人間の頭部を覆う帽子状のホルダ10Aに、第1センサ11及び第2センサ12を複数個(例えば、数十個〜数百個)ずつ設けた構成をなしている。これらの第1センサ11及び第2センサ12は等ピッチ(例えば、数ミリメートル間隔)で配置されている。
20 集計装置
30 通信装置
100 データ処理装置
101 CPU
102 バス
103 ROM
104 RAM
105 HDD
106 通信IF
107 入力IF
108 出力IF
110 入力デバイス
120 出力デバイス
Claims (12)
- 観測対象者の脳活動を時系列的に観測し、得られた観測データに基づいて前記観測対象者の行動を予測する行動予測方法において、
前記観測データを前記観測対象者の脳内の複数の電流源における時系列データに写像するフィルタを設定するステップと、設定したフィルタによって写像される時系列データの入力に対して前記観測対象者が特定の行動を起こす確率を出力する確率モデルを設定するステップと、新たに取得した観測データを前記フィルタにより前記電流源における時系列データに変換するステップと、変換した時系列データを設定した確率モデルに入力することにより前記確率を算出するステップとを有し、算出した確率に基づいて前記観測対象者の行動を予測することを特徴とする行動予測方法。 - 予測すべき行動の数だけ前記フィルタを設定し、各フィルタの前記確率への寄与度を算出するステップを更に有することを特徴とする請求項1に記載の行動予測方法。
- 前記確率モデルは、学習すべきパラメータを含み、前記観測対象者が前記特定の行動を実行した際に観測される観測データに基づいて前記パラメータを学習するステップを更に有することを特徴とする請求項1又は請求項2に記載の行動予測方法。
- 前記パラメータをベイズ推定法を用いて学習するステップを有することを特徴とする請求項3に記載の行動予測方法。
- 前記確率モデルは、前記時系列データの入力に応じたスカラー値を出力する判別関数と、該判別関数の出力値に応じて所定値域の値を出力するロジスティック関数とにより記述されることを特徴とする請求項1乃至請求項4の何れか1つに記載の行動予測方法。
- 前記確率モデルは、スパースロジスティック回帰モデルであることを特徴とする請求項1乃至請求項5の何れか1つに記載の行動予測方法。
- 観測対象者の脳活動を時系列的に観測し、得られた観測データに基づいて前記観測対象者の行動を予測する行動予測装置において、
前記観測データを前記観測対象者の脳内の複数の電流源における時系列データに写像するフィルタを設定する手段と、設定したフィルタによって写像される時系列データの入力に対して前記観測対象者が特定の行動を起こす確率を出力する確率モデルを設定する手段と、新たに取得した観測データを前記フィルタにより前記電流源における時系列データに変換する手段と、変換した時系列データを設定した確率モデルに入力することにより前記確率を算出する手段とを備え、算出した確率に基づいて前記観測対象者の行動を予測するようにしてあることを特徴とする行動予測装置。 - 予測すべき行動の数だけ前記フィルタを設定し、各フィルタの前記確率への寄与度を算出する手段を更に備えることを特徴とする請求項7に記載の行動予測装置。
- 前記確率モデルは、学習すべきパラメータを含み、前記観測対象者が前記特定の行動を実行した際に観測される観測データに基づいて前記パラメータを学習する手段を更に備えることを特徴とする請求項7又は請求項8に記載の行動予測装置。
- 前記パラメータをベイズ推定法を用いて学習するようにしてあることを特徴とする請求項9に記載の行動予測装置。
- 前記確率モデルは、前記時系列データの入力に応じたスカラー値を出力する判別関数と、該判別関数の出力値に応じて所定値域の値を出力するロジスティック関数とにより記述されることを特徴とする請求項7乃至請求項10の何れか1つに記載の行動予測装置。
- 前記確率モデルは、スパースロジスティック回帰モデルであることを特徴とする請求項7乃至請求項11の何れか1つに記載の行動予測装置。
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| US6044292A (en) * | 1998-09-21 | 2000-03-28 | Heyrend; F. Lamarr | Apparatus and method for predicting probability of explosive behavior in people |
| JP4505617B2 (ja) * | 2005-02-25 | 2010-07-21 | 株式会社国際電気通信基礎技術研究所 | リハビリテーション支援装置 |
| JP2006305334A (ja) * | 2005-03-30 | 2006-11-09 | Advanced Telecommunication Research Institute International | 回答獲得装置及び評価解析装置 |
| JP2006280806A (ja) * | 2005-04-04 | 2006-10-19 | Advanced Telecommunication Research Institute International | 脳内電流源推定方法、生体情報推定方法、脳内電流源推定装置、及び生体情報推定装置 |
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