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Softw. Eng. Methodol."],"published-print":{"date-parts":[[2021,4,30]]},"abstract":"<jats:p>Sentiment and emotion detection from textual communication records of developers have various application scenarios in software engineering (SE). However, commonly used off-the-shelf sentiment\/emotion detection tools cannot obtain reliable results in SE tasks and misunderstanding of technical knowledge is demonstrated to be the main reason. Then researchers start to create labeled SE-related datasets manually and customize SE-specific methods. However, the scarce labeled data can cover only very limited lexicon and expressions. In this article, we employ emojis as an instrument to address this problem. Different from manual labels that are provided by annotators, emojis are self-reported labels provided by the authors themselves to intentionally convey affective states and thus are suitable indications of sentiment and emotion in texts. Since emojis have been widely adopted in online communication, a large amount of emoji-labeled texts can be easily accessed to help tackle the scarcity of the manually labeled data. Specifically, we leverage Tweets and GitHub posts containing emojis to learn representations of SE-related texts through emoji prediction. By predicting emojis containing in each text, texts that tend to surround the same emoji are represented with similar vectors, which transfers the sentiment knowledge contained in emoji usage to the representations of texts. Then we leverage the sentiment-aware representations as well as manually labeled data to learn the final sentiment\/emotion classifier via transfer learning. Compared to existing approaches, our approach can achieve significant improvement on representative benchmark datasets, with an average increase of 0.036 and 0.049 in macro-F1 in sentiment and emotion detection, respectively. Further investigations reveal that the large-scale Tweets make a key contribution to the power of our approach. This finding informs future research not to unilaterally pursue the domain-specific resource but try to transform knowledge from the open domain through ubiquitous signals such as emojis. Finally, we present the open challenges of sentiment and emotion detection in SE through a qualitative analysis of texts misclassified by our approach.<\/jats:p>","DOI":"10.1145\/3424308","type":"journal-article","created":{"date-parts":[[2021,1,27]],"date-time":"2021-01-27T11:14:36Z","timestamp":1611746076000},"page":"1-48","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":38,"title":["Emoji-powered Sentiment and Emotion Detection from Software Developers\u2019 Communication Data"],"prefix":"10.1145","volume":"30","author":[{"given":"Zhenpeng","family":"Chen","sequence":"first","affiliation":[{"name":"Key Lab of High-Confidence Software Technology, MoE (Peking University), Beijing, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yanbin","family":"Cao","sequence":"additional","affiliation":[{"name":"Key Lab of High-Confidence Software Technology, MoE (Peking University), Beijing, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Huihan","family":"Yao","sequence":"additional","affiliation":[{"name":"Key Lab of High-Confidence Software Technology, MoE (Peking University), Beijing, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xuan","family":"Lu","sequence":"additional","affiliation":[{"name":"University of Michigan, Ann Arbor, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xin","family":"Peng","sequence":"additional","affiliation":[{"name":"Fudan University, Shanghai, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hong","family":"Mei","sequence":"additional","affiliation":[{"name":"Key Lab of High-Confidence Software Technology, MoE (Peking University), Beijing, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xuanzhe","family":"Liu","sequence":"additional","affiliation":[{"name":"Key Lab of High-Confidence Software Technology, MoE (Peking University), Beijing, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"320","published-online":{"date-parts":[[2021,1,27]]},"reference":[{"key":"e_1_2_1_1_1","doi-asserted-by":"publisher","DOI":"10.5555\/3155562.3155579"},{"key":"e_1_2_1_2_1","volume-title":"Proceedings of the 11th International Conference on Web and Social Media (ICWSM\u201917)","author":"Ai Wei","year":"2017","unstructured":"Wei Ai , Xuan Lu , Xuanzhe Liu , Ning Wang , Gang Huang , and Qiaozhu Mei . 2017 . 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