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A patch may be reviewed more than once before it is eventually merged or abandoned, and then such a patch may tighten the development schedule of the developers and further affect the development progress of a project. Thus, a tool that predicts early on how long a patch will be reviewed can help developers take self-inspection beforehand for the patches that require long-time review. In this paper, we propose a novel method, <jats:italic>PMCost<\/jats:italic>, to predict the reviewing rounds of a patch. <jats:italic>PMCost<\/jats:italic> uses a number of features, including patch meta-features, code diff features, personal experience features and patch textual features, to better reflect code changes and review process. To examine the benefits of <jats:italic>PMCost<\/jats:italic>, we perform experiments on three large open source projects, namely Eclipse, OpenDaylight and OpenStack. The encouraging experimental results demonstrate the feasibility and effectiveness of our approach. Besides, we further study the why the proposed features contribute to the reviewing rounds prediction.<\/jats:p>","DOI":"10.1007\/s10664-021-10035-z","type":"journal-article","created":{"date-parts":[[2021,10,23]],"date-time":"2021-10-23T06:02:43Z","timestamp":1634968963000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Reviewing rounds prediction for code patches"],"prefix":"10.1007","volume":"27","author":[{"given":"Yuan","family":"Huang","sequence":"first","affiliation":[]},{"given":"Xingjian","family":"Liang","sequence":"additional","affiliation":[]},{"given":"Zhihao","family":"Chen","sequence":"additional","affiliation":[]},{"given":"Nan","family":"Jia","sequence":"additional","affiliation":[]},{"given":"Xiapu","family":"Luo","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8234-3186","authenticated-orcid":false,"given":"Xiangping","family":"Chen","sequence":"additional","affiliation":[]},{"given":"Zibin","family":"Zheng","sequence":"additional","affiliation":[]},{"given":"Xiaocong","family":"Zhou","sequence":"additional","affiliation":[]}],"member":"297","published-online":{"date-parts":[[2021,10,23]]},"reference":[{"key":"10035_CR1","doi-asserted-by":"publisher","unstructured":"(2008) Spearman rank correlation coefficient. 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