Network Centrality and Core-periphery Analysis to Clarify the Tactics for Try in Rugby World Cup 2019

Koh Sasaki; Takumi Yamamoto; Ichiro Watanabe; Mitsuyuki Nakayama; Kensuke Iwabuchi; Takashi Katsuta; Ichiro Kono

doi:doi:10.11648/j.ajss.20210901.12

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Network Centrality and Core-periphery Analysis to Clarify the Tactics for Try in Rugby World Cup 2019

Koh Sasaki, Takumi Yamamoto, Ichiro Watanabe, Mitsuyuki Nakayama, Kensuke Iwabuchi, Takashi Katsuta, Ichiro Kono

Published in American Journal of Sports Science (Volume 9, Issue 1)

Received: 7 January 2021 Accepted: 14 January 2021 Published: 28 January 2021

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Abstract

After the first World Cup 1987, rugby undergoes rule revisions aimed at more dynamic games. There have been some analyses of the KPIs (Key Performance Indicators) so far, but not many ones as detailed dynamic network structure of tactics concerned with selected attack and defense areas, plays, and human resources. In current study, the tactics for try in Rugby World Cup 2019 was investigated by network centrality, core-periphery analysis and correspondence analysis. Bootstrap test and ROC analysis were used to validate the data of try contribution structure. The average score of try balance of final 8 teams was “3.94” and that of “not win” teams was “-2.23”. We categorized these indices into team performance, and tested Monte Carlo methods with bootstrap hypothesis testing to assess the standardized values. Furthermore, to test the precision of sensitivity and specificity of standardized try balance values, the Area Under the Curve (AUC) of the receiver–operator curve (ROC) analysis was executed. In final 8 stage, the feature of tactics for try in first 20 minutes and last 20 minutes were analyzed. The results suggested the tactics of “attack channel diversity” in first 20 minutes and tactics of “defense and substitute diversity” in last 20 minutes. In addition, network correspondence analysis of the top 4 teams’ performance in the tournament yielded interesting results regarding tactics of the attack and defense methods, and of the transition of human resources.

Published in	American Journal of Sports Science (Volume 9, Issue 1)
DOI	10.11648/j.ajss.20210901.12
Page(s)	8-16
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2021. Published by Science Publishing Group

Keywords

Network Centrality, Core-periphery, AUC Curve of ROC, Correspondence Analysis, Rugby World Cup 2019, Performance Analysis

References

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APA Style

Koh Sasaki, Takumi Yamamoto, Ichiro Watanabe, Mitsuyuki Nakayama, Kensuke Iwabuchi, et al. (2021). Network Centrality and Core-periphery Analysis to Clarify the Tactics for Try in Rugby World Cup 2019. American Journal of Sports Science, 9(1), 8-16. https://doi.org/10.11648/j.ajss.20210901.12

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ACS Style

Koh Sasaki; Takumi Yamamoto; Ichiro Watanabe; Mitsuyuki Nakayama; Kensuke Iwabuchi, et al. Network Centrality and Core-periphery Analysis to Clarify the Tactics for Try in Rugby World Cup 2019. Am. J. Sports Sci. 2021, 9(1), 8-16. doi: 10.11648/j.ajss.20210901.12

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AMA Style

Koh Sasaki, Takumi Yamamoto, Ichiro Watanabe, Mitsuyuki Nakayama, Kensuke Iwabuchi, et al. Network Centrality and Core-periphery Analysis to Clarify the Tactics for Try in Rugby World Cup 2019. Am J Sports Sci. 2021;9(1):8-16. doi: 10.11648/j.ajss.20210901.12

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@article{10.11648/j.ajss.20210901.12,
  author = {Koh Sasaki and Takumi Yamamoto and Ichiro Watanabe and Mitsuyuki Nakayama and Kensuke Iwabuchi and Takashi Katsuta and Ichiro Kono},
  title = {Network Centrality and Core-periphery Analysis to Clarify the Tactics for Try in Rugby World Cup 2019},
  journal = {American Journal of Sports Science},
  volume = {9},
  number = {1},
  pages = {8-16},
  doi = {10.11648/j.ajss.20210901.12},
  url = {https://doi.org/10.11648/j.ajss.20210901.12},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajss.20210901.12},
  abstract = {After the first World Cup 1987, rugby undergoes rule revisions aimed at more dynamic games. There have been some analyses of the KPIs (Key Performance Indicators) so far, but not many ones as detailed dynamic network structure of tactics concerned with selected attack and defense areas, plays, and human resources. In current study, the tactics for try in Rugby World Cup 2019 was investigated by network centrality, core-periphery analysis and correspondence analysis. Bootstrap test and ROC analysis were used to validate the data of try contribution structure. The average score of try balance of final 8 teams was “3.94” and that of “not win” teams was “-2.23”. We categorized these indices into team performance, and tested Monte Carlo methods with bootstrap hypothesis testing to assess the standardized values. Furthermore, to test the precision of sensitivity and specificity of standardized try balance values, the Area Under the Curve (AUC) of the receiver–operator curve (ROC) analysis was executed. In final 8 stage, the feature of tactics for try in first 20 minutes and last 20 minutes were analyzed. The results suggested the tactics of “attack channel diversity” in first 20 minutes and tactics of “defense and substitute diversity” in last 20 minutes. In addition, network correspondence analysis of the top 4 teams’ performance in the tournament yielded interesting results regarding tactics of the attack and defense methods, and of the transition of human resources.},
 year = {2021}
}

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TY  - JOUR
T1  - Network Centrality and Core-periphery Analysis to Clarify the Tactics for Try in Rugby World Cup 2019
AU  - Koh Sasaki
AU  - Takumi Yamamoto
AU  - Ichiro Watanabe
AU  - Mitsuyuki Nakayama
AU  - Kensuke Iwabuchi
AU  - Takashi Katsuta
AU  - Ichiro Kono
Y1  - 2021/01/28
PY  - 2021
N1  - https://doi.org/10.11648/j.ajss.20210901.12
DO  - 10.11648/j.ajss.20210901.12
T2  - American Journal of Sports Science
JF  - American Journal of Sports Science
JO  - American Journal of Sports Science
SP  - 8
EP  - 16
PB  - Science Publishing Group
SN  - 2330-8540
UR  - https://doi.org/10.11648/j.ajss.20210901.12
AB  - After the first World Cup 1987, rugby undergoes rule revisions aimed at more dynamic games. There have been some analyses of the KPIs (Key Performance Indicators) so far, but not many ones as detailed dynamic network structure of tactics concerned with selected attack and defense areas, plays, and human resources. In current study, the tactics for try in Rugby World Cup 2019 was investigated by network centrality, core-periphery analysis and correspondence analysis. Bootstrap test and ROC analysis were used to validate the data of try contribution structure. The average score of try balance of final 8 teams was “3.94” and that of “not win” teams was “-2.23”. We categorized these indices into team performance, and tested Monte Carlo methods with bootstrap hypothesis testing to assess the standardized values. Furthermore, to test the precision of sensitivity and specificity of standardized try balance values, the Area Under the Curve (AUC) of the receiver–operator curve (ROC) analysis was executed. In final 8 stage, the feature of tactics for try in first 20 minutes and last 20 minutes were analyzed. The results suggested the tactics of “attack channel diversity” in first 20 minutes and tactics of “defense and substitute diversity” in last 20 minutes. In addition, network correspondence analysis of the top 4 teams’ performance in the tournament yielded interesting results regarding tactics of the attack and defense methods, and of the transition of human resources.
VL  - 9
IS  - 1
ER  -

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Author Information

Koh Sasaki

Research Center of Health, Physical Fitness and Sports, Nagoya University, Nagoya, Japan
Takumi Yamamoto

Department of Physical Education, National Defense Academy, Yokoasuka, Japan
Ichiro Watanabe

Department of Physical Education, Tokyo City University, Tokyo, Japan
Mitsuyuki Nakayama

High Performance Committee, Japan Rugby football Union, Tokyo, Japan
Kensuke Iwabuchi

High Performance Committee, Japan Rugby football Union, Tokyo, Japan
Takashi Katsuta

High Performance Sport Centre, Japan Sport Council, Tokyo, Japan
Ichiro Kono

Governing Board, The Tokyo Organizing Committee of the Olympic and Paralympic Games, Tokyo, Japan

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APA Style

Koh Sasaki, Takumi Yamamoto, Ichiro Watanabe, Mitsuyuki Nakayama, Kensuke Iwabuchi, et al. (2021). Network Centrality and Core-periphery Analysis to Clarify the Tactics for Try in Rugby World Cup 2019. American Journal of Sports Science, 9(1), 8-16. https://doi.org/10.11648/j.ajss.20210901.12

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ACS Style

Koh Sasaki; Takumi Yamamoto; Ichiro Watanabe; Mitsuyuki Nakayama; Kensuke Iwabuchi, et al. Network Centrality and Core-periphery Analysis to Clarify the Tactics for Try in Rugby World Cup 2019. Am. J. Sports Sci. 2021, 9(1), 8-16. doi: 10.11648/j.ajss.20210901.12

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AMA Style

Koh Sasaki, Takumi Yamamoto, Ichiro Watanabe, Mitsuyuki Nakayama, Kensuke Iwabuchi, et al. Network Centrality and Core-periphery Analysis to Clarify the Tactics for Try in Rugby World Cup 2019. Am J Sports Sci. 2021;9(1):8-16. doi: 10.11648/j.ajss.20210901.12

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@article{10.11648/j.ajss.20210901.12,
  author = {Koh Sasaki and Takumi Yamamoto and Ichiro Watanabe and Mitsuyuki Nakayama and Kensuke Iwabuchi and Takashi Katsuta and Ichiro Kono},
  title = {Network Centrality and Core-periphery Analysis to Clarify the Tactics for Try in Rugby World Cup 2019},
  journal = {American Journal of Sports Science},
  volume = {9},
  number = {1},
  pages = {8-16},
  doi = {10.11648/j.ajss.20210901.12},
  url = {https://doi.org/10.11648/j.ajss.20210901.12},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajss.20210901.12},
  abstract = {After the first World Cup 1987, rugby undergoes rule revisions aimed at more dynamic games. There have been some analyses of the KPIs (Key Performance Indicators) so far, but not many ones as detailed dynamic network structure of tactics concerned with selected attack and defense areas, plays, and human resources. In current study, the tactics for try in Rugby World Cup 2019 was investigated by network centrality, core-periphery analysis and correspondence analysis. Bootstrap test and ROC analysis were used to validate the data of try contribution structure. The average score of try balance of final 8 teams was “3.94” and that of “not win” teams was “-2.23”. We categorized these indices into team performance, and tested Monte Carlo methods with bootstrap hypothesis testing to assess the standardized values. Furthermore, to test the precision of sensitivity and specificity of standardized try balance values, the Area Under the Curve (AUC) of the receiver–operator curve (ROC) analysis was executed. In final 8 stage, the feature of tactics for try in first 20 minutes and last 20 minutes were analyzed. The results suggested the tactics of “attack channel diversity” in first 20 minutes and tactics of “defense and substitute diversity” in last 20 minutes. In addition, network correspondence analysis of the top 4 teams’ performance in the tournament yielded interesting results regarding tactics of the attack and defense methods, and of the transition of human resources.},
 year = {2021}
}

Copy | Download

TY  - JOUR
T1  - Network Centrality and Core-periphery Analysis to Clarify the Tactics for Try in Rugby World Cup 2019
AU  - Koh Sasaki
AU  - Takumi Yamamoto
AU  - Ichiro Watanabe
AU  - Mitsuyuki Nakayama
AU  - Kensuke Iwabuchi
AU  - Takashi Katsuta
AU  - Ichiro Kono
Y1  - 2021/01/28
PY  - 2021
N1  - https://doi.org/10.11648/j.ajss.20210901.12
DO  - 10.11648/j.ajss.20210901.12
T2  - American Journal of Sports Science
JF  - American Journal of Sports Science
JO  - American Journal of Sports Science
SP  - 8
EP  - 16
PB  - Science Publishing Group
SN  - 2330-8540
UR  - https://doi.org/10.11648/j.ajss.20210901.12
AB  - After the first World Cup 1987, rugby undergoes rule revisions aimed at more dynamic games. There have been some analyses of the KPIs (Key Performance Indicators) so far, but not many ones as detailed dynamic network structure of tactics concerned with selected attack and defense areas, plays, and human resources. In current study, the tactics for try in Rugby World Cup 2019 was investigated by network centrality, core-periphery analysis and correspondence analysis. Bootstrap test and ROC analysis were used to validate the data of try contribution structure. The average score of try balance of final 8 teams was “3.94” and that of “not win” teams was “-2.23”. We categorized these indices into team performance, and tested Monte Carlo methods with bootstrap hypothesis testing to assess the standardized values. Furthermore, to test the precision of sensitivity and specificity of standardized try balance values, the Area Under the Curve (AUC) of the receiver–operator curve (ROC) analysis was executed. In final 8 stage, the feature of tactics for try in first 20 minutes and last 20 minutes were analyzed. The results suggested the tactics of “attack channel diversity” in first 20 minutes and tactics of “defense and substitute diversity” in last 20 minutes. In addition, network correspondence analysis of the top 4 teams’ performance in the tournament yielded interesting results regarding tactics of the attack and defense methods, and of the transition of human resources.
VL  - 9
IS  - 1
ER  -

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