A path relinking-based scatter search for the resource-constrained project scheduling problem
Why this work is in the frame
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Bibliographic record
Abstract
Project scheduling has received growing attention from researchers in recent decades in order to recommend models and methods to tackle problems for real-size projects. In this paper, we consider the resource-constrained project scheduling problem (RCPSP), which consists of scheduling activities in order to minimise the project duration in presence of precedence and resource constraints. We propose a hybrid metaheuristic based on scatter search that involves forward-backward improvement and reversing the project network at each iteration of the search. A bidirectional path relinking method with a new move is used as a solution combination method and a new improvement procedure is proposed in the reference set update method. The proposed method is applied to the standard benchmark projects from the PSPLIB library. The computational results show that the proposed scatter search produces high-quality solutions in a reasonable computational time and is among the best performing metaheuristics.
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Full frame distilled prediction
Teacher imitationNot 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.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.008 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
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.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it