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Record W2886644990 · doi:10.1061/9780784481271.062

Chaos and Complexity in Modeling and Detection of Spatial Temporal Clashes in Construction Processes

2018· article· en· W2886644990 on OpenAlex
Abdelhady Hosny, Mazdak Nik‐Bakht, Osama Moselhi

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

VenueConstruction Research Congress 2018 · 2018
Typearticle
Languageen
FieldEngineering
TopicBIM and Construction Integration
Canadian institutionsConcordia University
Fundersnot available
KeywordsWorkspaceComputer scienceChaoticCrewSensitivity (control systems)Variable (mathematics)Stochastic processScheduling (production processes)Stochastic modellingMathematical optimizationSimulationIndustrial engineeringOperations researchArtificial intelligenceMathematicsEngineering

Abstract

fetched live from OpenAlex

Spatial temporal clashes happen when workspaces overlap to share the same location at the same time period. The impacts of such overlap, as stated by the literature could extend from loss of productivity to property damage or death. The determination of the magnitude of the clash is based upon many parameters such workspace type and activity criticality. Most of the current clash detection models are deterministic. However, the behavior of the crew (their performance and approach taken towards management of clashes) is more chaotic. The chaos mainly emerges from the dependency of clashes and their consequences on the human interactions among crew members and between different crews. Stochastic modeling and simulation can help, to some extents, in capturing the chaotic nature of such behavior. Increasing the complexity of the model (due to introducing stochastic variables) is theoretically expected to add to the accuracy of simulation outcomes. The first step however, is to determine the sensitivity of the clash detection problem to possible chaotic behavior. This paper defines four possibilities of non-deterministic behavior: uncertain movement, variable productivity, dynamic scheduling, and clash impact butterfly effect. Additionally, this paper reports the results of a simple case study applied to define the fitness of selected clash evaluation models to the changes in workspaces due to the non-deterministic behaviors.

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.

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 categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Simulation or modeling · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.889
Threshold uncertainty score0.995

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0010.001
Science and technology studies0.0000.002
Scholarly communication0.0000.000
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 head0.076
GPT teacher head0.314
Teacher spread0.238 · 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