Devanshu Biswas - DEV Community

Devanshu Biswas

Sep 17

Your Withdrawal Rate Moves Time-to-FI by 31 Months. Your Balance, the Number in the Biggest Font, Moves It 3.

#python #opensource #programming #webdev

4 min read

Devanshu Biswas

Sep 17

180 RAG Citation Defects Only a Free id Lookup Catches, 60 Only the Grader Does: Neither Subsumes the Other

#ai #llm #programming #webdev

3 min read

Devanshu Biswas

Sep 17

Pack Four Docs Without the Block Mask and Doc 4 Spends 83.78% of Its Attention on Documents It Never Saw

#deeplearning #machinelearning #python #ai

4 min read

Devanshu Biswas

Sep 17

Model A Beats B on Every Slice and Loses 57.60% to 79.06%: 9,510 Reversals, 0 on a Shared Mixture

#machinelearning #datascience #python #programming

3 min read

Devanshu Biswas

Sep 17

HTTP Range Has Three Outcomes, Not Two: 32.03% Ignored, 54.95% Partial, 13.02% 416 Over 10,116 Calls

#webdev #programming #javascript #http

3 min read

Devanshu Biswas

Sep 17

The Same 8,514-Token Prompt Bills 0.1113x or 1.2474x — an 11.21x Gap From One 14-Token Line Moving

#ai #llm #programming #webdev

1

4 min read

Devanshu Biswas

Sep 17

A Roving Tabindex Widget Costs 1 Tab Stop at Every Size 1..50; the Default Markup Costs 1,275

#webdev #javascript #frontend #ux

4 min read

Devanshu Biswas

Sep 17

The Mover Loses on Exactly 11 of 299 Piles, and Four Sensible Openings Win 0 of the Other 288

#algorithms #math #javascript #programming

3 min read

Devanshu Biswas

Sep 8

A Search Scope Is a Read Scope: 751 Yes/No Questions Recover Every "Private" Field in My Personal API

#security #python #api #opensource

4 min read

Devanshu Biswas

Sep 8

Your Vector Store Rejects the Embedder Change That Barely Matters and Cannot See the One That Destroys Retrieval

#ai #rag #embeddings #programming

4 min read

Devanshu Biswas

Sep 8

MC Dropout With 10 Samples Is Further From the Truth Than Just Turning Dropout Off. Here Is the Break-Even.

#deeplearning #machinelearning #ai #python

4 min read

Devanshu Biswas

Sep 8

Your 90%-Precision Threshold Delivers 63.5% After a Prevalence Shift — With TPR and FPR Bit-Identical

#machinelearning #datascience #python #programming

3 min read

Devanshu Biswas

Sep 8

I Implemented npm, Cargo, Composer and pip Semver. Only 2 of 13 Ranges Mean the Same Thing in All Four.

#javascript #npm #rust #programming

4 min read

Devanshu Biswas

Sep 8

I Built a Rig to Show That an Agent's Own Notes Poison Its Context. The Effect Was Not There.

#ai #llm #agents #programming

3 min read

Devanshu Biswas

Sep 8

The Optimistic-UI Rollback Everyone Writes Is Exactly Right for a Toggle and the Worst Option for a Set

#webdev #javascript #ux #frontend

3 min read

Devanshu Biswas

Sep 8

Whatever Length-3 Coin Pattern You Pick, I Have a Reply That Beats It — and My Worst Case Is 2/3

#gamedev #javascript #probability #math

3 min read

Devanshu Biswas

Sep 3

The Change Detector Everyone Writes First Alerts on 48 of 48 Fetches

#python #opensource #programming #webdev

3 min read

Devanshu Biswas

Sep 3

Retries Take Your Agent's Success Rate to 96.95% While Exactly-Once Goes Down

#ai #llm #distributedsystems #programming

2 min read

Devanshu Biswas

Sep 3

Raising the Batch Size Makes Batch Norm's Inference Statistics 13x Worse

#deeplearning #machinelearning #python #ai

2 min read

Devanshu Biswas

Sep 3

Split Before You Scale Guards the Mistake That Costs 0.000168. The One That Costs 0.64 Gets a Footnote.

#machinelearning #datascience #python #programming

2 min read

Devanshu Biswas

Sep 3

Zero of Ten Ignore Patterns Mean the Same Thing in git, rsync, a Shell Glob and Docker

#git #programming #linux #devops

2 min read

Devanshu Biswas

Sep 3

Your Schema Says 65% Valid. 45% Are True. The Repair Layer Makes Both Numbers Worse.

#ai #llm #programming #json

2 min read

Devanshu Biswas

Sep 3

Save scrollTop Is Exact on 600 of 600 Journeys, and 0 of 600 Once Three Items Arrive

#webdev #javascript #frontend #ux

2 min read

Devanshu Biswas

Sep 3

In Undercut the Optimal Strategy Never Names 1 or 2, and the Closed Form Breaks at n=7

#algorithms #math #javascript #programming

2 min read

Devanshu Biswas

Aug 31

Read Your Photos' Modification Times and 1,007 of 1,513 Land in the Month You Copied the Library

#python #opensource #privacy #programming

2 min read

Devanshu Biswas

Aug 31

Your Vector Index Spends 1.40x More on the Queries It Already Answers Perfectly

#ai #database #performance #programming

3 min read

Devanshu Biswas

Aug 31

Rotate the Coordinates and EWC's Penalty Loses 84.8% of Its Value. The Function Never Changed.

#deeplearning #machinelearning #python #ai

2 min read

Devanshu Biswas

Aug 31

The Exactly-Correct Model Is First on Brier, Log Loss, AUC and Accuracy — and 5th of 10 on F1@0.5

#machinelearning #datascience #python #programming

2 min read

Devanshu Biswas

Aug 31

Put the Longer Branch First Is a No-Op in grep and Changes 15.5% of Answers in JavaScript

#regex #programming #javascript #linux

2 min read

Devanshu Biswas

Aug 31

The Logit-Bias Ban in Every Provider's Docs Leaves the Word Writable 81% of the Time

#ai #llm #python #programming

2 min read

Devanshu Biswas

Aug 31

Your Focus-Trap Tests Pass for 3,600 of 3,600 Random Element Orders, Which Is Why Six of Seven Traps Are Wrong

#webdev #javascript #a11y #frontend

2 min read

Devanshu Biswas

Aug 31

The Only Rule Anybody States for Sim Is 570x Ambiguous, and Its Worst Reading Is 56x Worse Than Random

#algorithms #math #javascript #gamedev

2 min read

Devanshu Biswas

Aug 31

Your Search Says Five Sources. It Is Standing on 4.75 Documents, and Some of Them Quote Each Other

#python #opensource #ai #programming

4 min read

Devanshu Biswas

Aug 31

Widen the Confirmation Window and Every Response-Time Metric Improves While Harm Goes Up 1.65x

#sre #devops #python #opensource

2 min read

Devanshu Biswas

Aug 31

Halve the Model's Error Rate and More Wrong Answers Reach the Customer. Same Reviewer.

#ai #llm #productivity #programming

2 min read

Devanshu Biswas

Aug 31

Averaging Predictions Is a Theorem. Averaging Weights Is a Coincidence That Usually Works.

#deeplearning #machinelearning #python #programming

2 min read

Devanshu Biswas

Aug 31

What ε Actually Buys: Checking a Privacy Guarantee Against Its Own Definition, Not a Simulation

#machinelearning #privacy #datascience #security

2 min read

Devanshu Biswas

Aug 31

NFC(NFD(c)) Fails for 1,120 of the 2,061 Characters That Have a Canonical Decomposition

#unicode #programming #javascript #i18n

2 min read

Devanshu Biswas

Aug 31

The Same Temperature, top_p and top_k Do Not Mean the Same Thing in Two Mainstream Stacks

#ai #llm #programming #python

2 min read

Devanshu Biswas

Aug 31

The Drag Threshold in the Most Code Calls 959 of 960 Deliberate Clicks a Drag

#webdev #javascript #frontend #ux

2 min read

Devanshu Biswas

Aug 31

In Wythoff's Game, Playing the Nim Strategy Is 22x Worse Than Closing Your Eyes

#algorithms #math #javascript #programming

2 min read

Devanshu Biswas

Aug 30

Widen the Worker Pool From 1 to 24 and Every Number the Broker Reports Is Identical. Lost Updates Go 0 to 1,710.

#devops #ai #python #distributedsystems

2 min read

Devanshu Biswas

Aug 30

Temperature 0, a Fixed Seed, and a Different Reply Anyway — Because of Who Else Was in Your Batch

#ai #llm #programming #machinelearning

1 min read

Devanshu Biswas

Aug 30

The Tornado Chart Is Blind to the Thing That Goes Wrong, Because the Base Case Is Where Nothing Does

#python #opensource #programming #datascience

2 min read

Devanshu Biswas

Aug 30

The Softmax Bottleneck Is an Integer, and the Thing It Predicts Is Continuous

#machinelearning #deeplearning #ai #python

2 min read

Devanshu Biswas

Aug 30

A Generalization Bound Is Correct, and This Page Measures What It Is Worth

#machinelearning #statistics #datascience #math

2 min read

Devanshu Biswas

Aug 30

CREATE TABLE p(x FLOATING POINT) Is an INTEGER Column

#sqlite #database #programming #javascript

1 min read

Devanshu Biswas

Aug 30

Line-Range Edits Are Wrong on 93.14% of Three-Hunk Calls and Refuse 0.00% of Them

#ai #llm #programming #python

2 min read

Devanshu Biswas

Aug 30

Five of Eight Input Masks Pass Every Test, Four of Those Five Are Wrong, and Backspace Does Nothing in Exactly Three Places

#webdev #javascript #frontend #ux

2 min read

Devanshu Biswas

Aug 30

Counting the Edges in Hackenbush Is Exactly a Coin Flip, at Every Even Length, Forever

#algorithms #math #javascript #programming

2 min read

Devanshu Biswas

Aug 29

Log Coverage Is 1.0000 at Every Schema Width, Including the Width Where the Record Is Empty

#ai #devops #python #observability

2 min read

Devanshu Biswas

Aug 29

Your Decontamination Report Measures the N-Gram Overlap It Happened to Look For

#ai #llm #machinelearning #datascience

2 min read

Devanshu Biswas

Aug 29

Four of Six Self-Checks Cannot Fail, and the Two That Can Go Red on the Better Configurations

#python #opensource #ai #programming

2 min read

Devanshu Biswas

Aug 29

The Honest Gradient Through a Binary Bottleneck Is Not Small. It Is Exactly Zero on 42 of 42 Coordinates.

#machinelearning #deeplearning #ai #python

2 min read

Devanshu Biswas

Aug 29

Two Groups With Identical ROC Curves, Identical TPR and FPR to the Last Bit, and a 13-Point Selection Gap

#machinelearning #datascience #statistics #python

2 min read

Devanshu Biswas

Aug 29

5.21% of DEFLATE Matches Copy Bytes That Have Not Been Written Yet

#programming #algorithms #javascript #compression

2 min read

Devanshu Biswas

Aug 29

71.53% of Prompt Cut Positions Are Not a Token Boundary of the Text That Follows

#ai #llm #programming #python

2 min read

Devanshu Biswas

Aug 29

Seven of Nine Scroll-Spy Implementations Pass the Only Test Anyone Writes, and Six of Those Seven Are Wrong

#webdev #javascript #css #frontend

2 min read

Devanshu Biswas

Aug 29

A Grid Search for Kuhn Poker's Optimal Strategy Finds Either q/3 + 1 Answers or Exactly Zero

#algorithms #math #javascript #programming

2 min read

Devanshu Biswas

Aug 28

Twelve of the Twenty-Four Sandbox Settings Do More Harm Than Having No Sandbox At All

#ai #security #python #devops

2 min read

Writing Debut

Want to connect with Devanshu Biswas?