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Record W2186794832

Real-time Lookahead Control Policies

2002· article· en· W2186794832 on OpenAlexaff
Vadim Bulitko, Ilya Levner, Russell Greiner

Bibliographic record

Venuenot available
Typearticle
Languageen
FieldComputer Science
TopicTime Series Analysis and Forecasting
Canadian institutionsUniversity of Alberta
Fundersnot available
KeywordsComputer scienceSequence (biology)Quality (philosophy)State (computer science)AbstractionControl (management)Action (physics)Artificial intelligenceAlgorithm
DOInot available

Abstract

fetched live from OpenAlex

Decision-making in practical domains is usually complex, as a coordinated sequence of actions is needed to reach a satisfactory state, and responsive, as no fixed sequence works for all cases – instead we need to select actions after sensing the environment. At each step, a lookahead control policy chooses among feasible actions by envisioning their effects into the future and selecting the action leading to the most promising state. There are several challenges to producing the appropriate policy. First, when each individual state description is large, the policy may instead use a low-dimensional abstraction of the states. Second, in some situations the quality of the final state is not given, but can only be learned from data. Deeper lookahead typically selects actions that lead to higher-quality outcomes. Of course, as deep forecasts are computationally expensive, it is problematic when computational time is a factor. This paper makes this accuracy/efficiency tradeoff explicit, defining a system’s effectiveness in terms of both the quality of the returned response, and the computational cost. We then investigate how deeply a system should search, to optimize this “type II ” performance criterion.

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)0.003
metaresearch head score (Gemma)0.008
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: Methods · Consensus signal: Methods
Teacher disagreement score0.004
Threshold uncertainty score0.015

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0030.008
Meta-epidemiology (narrow)0.0010.000
Meta-epidemiology (broad)0.0010.000
Bibliometrics0.0010.000
Science and technology studies0.0010.001
Scholarly communication0.0010.002
Open science0.0020.001
Research integrity0.0010.002
Insufficient payload (model declined to judge)0.0040.001

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 head0.014
GPT teacher head0.207
Teacher spread0.193 · 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
GenreMethods

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

Citations3
Published2002
Admission routes1
Has abstractyes

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