Performance indicators that contributed to success at the group stage and play-off stages of the 2019 Rugby World Cup were analysed using publicly available data obtained from the official tournament website using both a non-parametric statistical technique, Wilcoxon's signed rank test, and a decision rules technique from machine learning called RIPPER. Our statistical results found that ball carry effectiveness (percentage of ball carries that penetrated the opposition gain-line) and total metres gained (kick metres plus carry metres) were found to contribute to success at both stages of the tournament and that indicators that contributed to success during the group stages (dominating possession, making more ball carries, making more passes, winning more rucks, and making less tackles) did not contribute to success at the play-off stage. Our results using RIPPER found that low ball carries and a low lineout success percentage jointly contributed to losing at the group stage, while winning a low number of rucks and carrying over the gain-line a sufficient number of times contributed to winning at the play-off stage of the tournament. The results emphasise the need for teams to adapt their playing strategies from the group stage to the play-off stage at tournament in order to be successful.

中文翻译：

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有助于在 2019 年橄榄球世界杯小组赛和附加赛阶段取得成功的表现指标

使用从官方锦标赛网站获得的公开数据，使用非参数统计技术、Wilcoxon 的签名等级测试和决策分析了有助于 2019 年橄榄球世界杯小组赛和附加赛阶段取得成功的表现指标来自机器学习的规则技术称为 RIPPER。我们的统计结果发现，持球效率（穿过对方增益线的持球率）和获得的总米数（踢球米数加上进球米数）有助于在比赛的两个阶段取得成功，并且有助于提高比赛成绩的指标小组赛阶段的成功（控制球权、更多的持球、更多的传球、更多的拉力和更少的铲球）并没有对附加赛阶段的成功做出贡献。我们使用 RIPPER 的结果发现，低控球率和低争球成功率共同导致小组赛失利，而赢得少量 rucks 和保持足够的赢球次数则有助于在比赛中获胜-比赛结束。结果强调了球队需要将他们的比赛策略从小组赛阶段调整到锦标赛的附加赛阶段才能取得成功。