Framework based on conformal predictors and power martingales for detection of fixed football matches

Authors

DOI:

https://doi.org/10.15587/1729-4061.2023.276977

Keywords:

football match, fixed result, measure of nonconformity, p-value for conformity, degree of difference

Abstract

One of the difficult problems that arises during football competitions is match-fixing. In terms of negative effect, such shameful phenomena are commensurate with the problem of doping. This paper has analyzed known methods for the possible detection of match-fixing, including sociological analysis of participants in match-fixing, methods for predicting the outcome of the match, analysis of bets and performance of the player or team during the match. It is noted that the assessment of match-fixed results in the considered methods is carried out based on the analysis of a large amount of data. But such information is not always available. Given the insufficient formalization of the problem area, it is relevant to conduct research that does not require a large amount of non-publicly available data but, at the same time, makes it possible to effectively identify potentially suspicious matches regarding a fixed result. The description of the input data is formalized in the form of a data structure containing a chronological history of the results of football seasons, the ranking of teams and matches of the season depending on the overall result of the teams in the season. A method for detecting suspicious football matches with a fixed result has been built using conformal predictors and power martingales within which a new measure of non-conformity has been introduced to determine atypical football matches. To obtain a generalization of the statistics of atypical matches, a power submartingale was used. Evaluation of the effectiveness of the developed method for detecting suspicious football matches was carried out based on precision and recall of the classification metrics using data on the 2013–2014 season of the French II League. The quality of work of the developed method reaches 85 % in terms of precision metric, 96 % in terms of recall metric, and 0.853 in terms of metric F1.

Author Biographies

Ivan Zhuk, National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”

Postgraduate Student

Department of Applied Mathematics

Oleg Chertov, National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”

Doctor of Technical Sciences, Professor

Department of Applied Mathematics

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Framework based on conformal predictors and power martingales for detection of fixed football matches

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Published

2023-04-29

How to Cite

Zhuk, I., & Chertov, O. (2023). Framework based on conformal predictors and power martingales for detection of fixed football matches . Eastern-European Journal of Enterprise Technologies, 2(4 (122), 6–15. https://doi.org/10.15587/1729-4061.2023.276977

Issue

Vol. 2 No. 4 (122) (2023): Mathematics and Cybernetics - applied aspects

Section

Mathematics and Cybernetics - applied aspects

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Copyright (c) 2023 Ivan Zhuk, Oleg Chertov

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