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An approximate dynamic programming approach to tackling mass evacuation operations

2021· article· en· W4206919836 on OpenAlex
Mark Rempel, Nicholi Shiell, Kaeden Tessier

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.

Bibliographic record

Venue2021 IEEE Symposium Series on Computational Intelligence (SSCI) · 2021
Typearticle
Languageen
FieldEngineering
TopicEvacuation and Crowd Dynamics
Canadian institutionsCanadian Armed ForcesDefence Research and Development Canada
Fundersnot available
KeywordsMarkov decision processDynamic programmingComputer scienceBellman equationCurse of dimensionalityMathematical optimizationOperations researchStochastic programmingMarkov processRepresentation (politics)Artificial intelligenceMathematicsAlgorithm

Abstract

fetched live from OpenAlex

This article examines a major maritime disaster scenario in which the objective is to maximize the number of survivors. To achieve this objective, we seek to optimize the decision policy to load individuals onto a helicopter for transport from an evacuation site to a forward operating base. Our contributions are twofold. First, we formulate the loading problem as a finite-horizon Markov Decision Process. Second, since the curse of dimensionality renders exact methods not applicable, we use an Approximate Dynamic Programming (ADP) approach to explore the efficacy of these methods to the problem. We generate three ADP policies, each using a value function approximation based on a unique post-decision state variable and a lookup table representation. We compare these ADP policies to a random policy, a myopic policy, and Policy Function Approximation (PFA) which evacuates survivors in order of triage category starting with the most critically ill. Our results show that an ADP-generated policy which prioritizes the evacuation of healthy individuals improved performance by 34 ± 5% versus the random policy, 15 ± 3% versus the myopic policy, and 42 ± 3% versus the PFA policy.

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Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesMeta-epidemiology (narrow)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Simulation or modeling · Consensus signal: Simulation or modeling
GenreCandidate signal: Methods · Consensus signal: none
Teacher disagreement score0.703
Threshold uncertainty score1.000

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.001
Science and technology studies0.0000.000
Scholarly communication0.0010.001
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

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 head0.015
GPT teacher head0.275
Teacher spread0.260 · 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