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Record W1526980774 · doi:10.37236/318

Value-Peaks of Permutations

2010· article· en· W1526980774 on OpenAlexaff
Pierre Bouchard, Hungyung Chang, Jun Ma, Jean Yeh, Yeong‐Nan Yeh

Bibliographic record

VenueThe Electronic Journal of Combinatorics · 2010
Typearticle
Languageen
FieldMathematics
TopicAdvanced Combinatorial Mathematics
Canadian institutionsUniversité du Québec à Montréal
FundersNational Science Council
KeywordsCombinatoricsMathematicsSigmaPartially ordered setPermutation (music)Value (mathematics)Set (abstract data type)Discrete mathematicsPhysicsStatistics

Abstract

fetched live from OpenAlex

In this paper, we focus on a "local property" of permutations: value-peak. A permutation $\sigma$ has a value-peak $\sigma(i)$ if $\sigma(i-1) < \sigma(i)>\sigma(i+1)$ for some $i\in[2,n-1]$. Define $VP(\sigma)$ as the set of value-peaks of the permutation $\sigma$. For any $S\subseteq [3,n]$, define $VP_n(S)$ such that $VP(\sigma)=S$. Let ${\cal P}_n=\{S\mid VP_n(S)\neq\emptyset\}$. we make the set ${\cal P}_n$ into a poset $\mathfrak{ P}$$_n$ by defining $S\preceq T$ if $S\subseteq T$ as sets. We prove that the poset $\mathfrak{ P}$$_n$ is a simplicial complex on the set $[3,n]$ and study some of its properties. We give enumerative formulae of permutations in the set $VP_n(S)$.

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)0.001
metaresearch head score (Gemma)0.006
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Not applicable · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: none
Teacher disagreement score0.012
Threshold uncertainty score0.041

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0010.006
Meta-epidemiology (narrow)0.0010.001
Meta-epidemiology (broad)0.0010.001
Bibliometrics0.0020.002
Science and technology studies0.0030.006
Scholarly communication0.0040.011
Open science0.0010.005
Research integrity0.0010.003
Insufficient payload (model declined to judge)0.0120.002

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 head0.013
GPT teacher head0.305
Teacher spread0.292 · 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 designNot applicable
Domainnot available
GenreEmpirical

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

Citations11
Published2010
Admission routes1
Has abstractyes

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