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| Title: | 職業網球單打評分模型的實證研究
An Empirical Study of Rating-System Model on Professional Tennis |
| Authors: | 蕭立承
Hsiao, Li-Chen |
| Contributors: | 余清祥
洪英超
Yue, Ching-Syang
Hung, Ying-Chao
蕭立承
Hsiao, Li-Chen |
| Keywords: | 運動大數據
探索性資料分析
評分模型
貝氏分析
職業網球
Sport Big Data
Exploratory Data Analysis
Rating Model
Bayesian Analysis
Professional Tennis Matches |
| Date: | 2020 |
| Issue Date: | 2020-09-02 11:43:15 (UTC+8) |
| Abstract: | 預測是決策分析的重要課題，如果能夠清楚地掌握未知狀況，減少因應意外事件所需的心力與資源，則更能有效率地解決問題。預測對於職業運動及球類格外重要，經常用於設計訓練課程、安排隊形及對戰策略，可以提升個人表現及增加獲勝的機會，現在國內外有不少博弈業者也以預測為研究議題，根據球隊及球員戰績及相關資料評估勝率，採用統計或機器學習模型計算賠率。本文以預測男女職業網球大滿貫（四大公開賽：澳洲、法國、溫布敦、美國）的勝負為目標，透過探索性資料分析（Exploratory Data Analysis）尋找較為重要的解釋變數，比較統計學習及機器學習等量化模型的成效。另外，本文也引進職業西洋棋常用的Glicko模型，研擬改進這個模型的可能性；其中，Glicko評分模型由哈佛教授Mark Glickman提出，依據貝氏理論更新球員特性。
本文先透過探索性資料分析，尋找較能反映比賽勝負的球員相關變數，以此作為建立統計及機器學習的基礎，之後再將最佳模型與Glicko模型比較。本文採用2000～2019年男女職業網球四大滿貫資料，採用分類模型如羅吉士迴歸（統計學習模型）、SVM、Neural Network及Lightgbm（以上三者為機器學習模型），透過交叉驗證評估優劣。分析發現職業網球排名與比賽勝負關係最為密切，單以此變數訓練模型準確性可達7成，而Glicko模型在準確性或AUC（Area Under Curve）都有不錯的表現，用於男性或女性的勝負預測都優於統計及機器學習模型。本文嘗試進一步優化Glicko模型，綜合各場地類別的Glicko及其他解釋變數，發現可略微增加Glicko模型的預測準確性。
Prediction is important in decision analysis and the problem solving would be more efficient if we can narrow the possibilities down. Prediction is also important in professional sports. It can be used in designing training courses, arranging gaming strategies, and organizing team members, in order to improve game performance and winning probability. Many bookmakers use statistical or machine learning models to predict the winning odds, based on match records and related data. In this study, our goal is to investigate the models of predicting the match outcomes of Grand Slam tournaments (Australian Open, French Open, Wimbledon Championships, and US. Open). In particular, we will apply Exploratory Data Analysis (EDA) to explore important variables. In addition to statistical and machine learning models, we also consider Glicko rating model, commonly used in professional chess, to predict the game results. Glicko was proposed by Harvard professor Mark Glickman and it updates player rating based on Bayesian theory.
The empirical study is based on men’s and women’s Grand Slam data (2000~ 2019). We first use EDA to determine important variables and then apply classification models, such as logistic regression (statistical learning model), Support Vector Machine, Neural Network and Light Gradient Boosting Machine (machine learning model), to evaluate the classification results through cross-validation. Our analysis results show that the professional tennis ranking is the most important variable and all models include this variable can achieve at least 70% of accuracy. The Glicko model outperforms statistical and machine learning models, with respect to accuracy and AUC (Area Under Curve). However, the improvement of modified Glicko model is quite limited. |
| Reference: | 英文文獻
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| Description: | 碩士
國立政治大學
統計學系
107354024 |
| Source URI: | http://thesis.lib.nccu.edu.tw/record/#G0107354024 |
| Data Type: | thesis |
| DOI: | 10.6814/NCCU202001670 |
| Appears in Collections: | [統計學系] 學位論文
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