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Record W3212951980 · doi:10.22215/etd/2019-13869

Statistical Assessment of Soccer Players

2019· dissertation· en· W3212951980 on OpenAlexaff
Mohammad-Amin Nabavi

Bibliographic record

Venuenot available
Typedissertation
Languageen
FieldEconomics, Econometrics and Finance
TopicSports Analytics and Performance
Canadian institutionsCarleton University
Fundersnot available
KeywordsLeagueLogistic regressionRank (graph theory)StatisticsOrdered logitPsychologyComputer scienceGeographyMathematics

Abstract

fetched live from OpenAlex

This thesis examines the use of neural network modelling and ordinal logistic regression on a single season of data to score or rank soccer players.These scores and ranks are then compared with ones from FIFA EASports that are based on a much more extensive data set that includes more variables as well as historical data.Using repeated measures one-way ANOVA and subsequent multiple comparison testing, we conclude that a neural network model with ten nodes in one hidden layer is able to generate scores statistically similar to FIFA EASports, while ordinal logistic regression cannot.We confirm this result be also examining the ranks obtained by both the neural network model and the ordinal logistic regression model.Spearman rank correlations are also examined and confirm that a neural network with 10 nodes in one hidden layer also generates ranks statistically similar to FIFA EASports.We also demonstrate the use of association rule mining on one team's data from the 2015-16 season to identify players and combinations thereof that are associated with winning (or not winning) a match.Analyses are based on data from the Italian Serie A League 2015-2016 season.

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)0.005
metaresearch head score (Gemma)0.024
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: Observational
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.007
Threshold uncertainty score0.026

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0050.024
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0040.003
Science and technology studies0.0000.000
Scholarly communication0.0010.001
Open science0.0010.001
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0070.002

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 head0.025
GPT teacher head0.286
Teacher spread0.261 · 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 designObservational
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

Citations0
Published2019
Admission routes1
Has abstractyes

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