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Record W2897843712 · doi:10.1109/cig.2018.8490400

Anxious Learning in Real-Time Heuristic Search

2018· article· en· W2897843712 on OpenAlexaff
Vadim Bulitko, Kacy Doucet

Bibliographic record

Venuenot available
Typearticle
Languageen
FieldComputer Science
TopicArtificial Intelligence in Games
Canadian institutionsUniversity of Alberta
Fundersnot available
KeywordsHeuristicComputer scienceIncremental heuristic searchNull-move heuristicArtificial intelligencePathfindingConsistent heuristicProcess (computing)Plan (archaeology)Machine learningBeam searchSearch algorithmTheoretical computer scienceAlgorithm

Abstract

fetched live from OpenAlex

Real-time heuristic search methods are used when planning time available per agent's move is severely limited (e.g., while pathfinding in a video game). Such agents interleave planning and plan execution. As the agent has to move before a complete plan is computed, it is prone to be misguided by inaccuracies in its heuristic. To get out of heuristic depressions, such agents update their heuristic over time. The usual update process requires multiple state revisits which can make the agent appear irrational to the player. To alleviate such map "scrubbing" we propose a new learning mechanism inspired by the psychological notion of anxiety. Our agent maintains a level of anxiety which increases due to state revisits and decays naturally over time. Agent's anxiety causes it to update the heuristic more aggressively thus filling heuristic depressions quicker. Such anxiety-accelerated learning can be used on top of other real-time heuristic search techniques. Empirical evaluation on video-game pathfinding benchmarks demonstrates benefits for the average solution quality when the new mechanism is used by itself or in combination with expendable state marking.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.

metaresearch head score (Codex)0.002
metaresearch head score (Gemma)0.016
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Simulation or modeling · Consensus signal: Simulation or modeling
GenreCandidate signal: Empirical · Consensus signal: none
Teacher disagreement score0.002
Threshold uncertainty score0.011

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0020.016
Meta-epidemiology (narrow)0.0010.000
Meta-epidemiology (broad)0.0010.000
Bibliometrics0.0010.000
Science and technology studies0.0000.002
Scholarly communication0.0020.002
Open science0.0010.001
Research integrity0.0010.002
Insufficient payload (model declined to judge)0.0020.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.039
GPT teacher head0.323
Teacher spread0.284 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designSimulation or modeling
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations1
Published2018
Admission routes1
Has abstractyes

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