Bibliographic record
Abstract
ABSTRACT I introduce a new graph‐theoretic property called abundant neighborhoods . This property is motivated by studying the thickness of economic markets. A vertex is, roughly, guaranteed to match if and only if it has an abundant neighborhood. This fact holds across numerous variants of two‐sided markets that are studied across the economics, operations research, and computer science literature. I introduce a new formalism to study these variants under a unifying framework, which I call matching rules , allowing us to study hitherto different types of markets (equivalently, graph matching problems) together. In particular, stable matchings, max‐weight matchings, and rank‐maximal matchings can be studied together as they are all surjective maximal matching rules. Lastly, the abundant neighborhood property can be used to study properties of maximal matchings: a vertex is matched in all maximal matchings if and only if it has an abundant neighborhood. With this observation, I develop a novel decomposition for studying maximal matchings. I use it to introduce a new integer programming formulation of the minimum maximal matching problem, which represents the worst‐case performance of a market. I show with experiments that using this formulation solves the problem for dense graphs with up to 500 vertices with 30%–50% less time than previous approaches from the literature and yields much tighter solutions for timed‐out instances.
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How this classification was reachedexpand
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 | 0.007 | 0.005 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 0.001 |
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.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
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".