%0 Conference Proceedings %B 12th Working Conference on Mining Software Repositories (MSR 2015) %D 2015 %T A Dataset of High Impact Bugs: Manually-Classified Issue Reports %A Ohira, Masao %A Yutaro Kashiwa %A Yosuke Yamatani %A Hayato Yoshiyuki %A Yoshiya Maeda %A Nachai Limsettho %A Keisuke Fujino %A Hata, Hideaki %A Ihara, Akinori %A Kenichi Matsumoto %K ambari %K camel %K derby %K wicket %X The importance of supporting test and maintenance activities in software development has been increasing, since recent software systems have become large and complex. Although in the field of Mining Software Repositories (MSR) there are many promising approaches to predicting, localizing, and triaging bugs, most of them do not consider impacts of each bug on users and developers but rather treat all bugs with equal weighting, excepting a few studies on high impact bugs including security, performance, blocking, and so forth. To make MSR techniques more actionable and effective in practice, we need deeper understandings of high impact bugs. In this paper we introduced our dataset of high impact bugs which was created by manually reviewing four thousand issue reports in four open source projects (Ambari, Camel, Derby and Wicket). %B 12th Working Conference on Mining Software Repositories (MSR 2015) %I IEEE %8 05/2015 %U http://oss.sys.wakayama-u.ac.jp/publications/pman3.cgi?DOWNLOAD=141 %> https://flosshub.org/sites/flosshub.org/files/5594a518.pdf %0 Conference Paper %B OSS2008: Open Source Development, Communities and Quality (IFIP 2.13) %D 2008 %T Analysis of Coordination Between Developers and Users in the Apache Community %A Kamei, Yasutaka %A Matsumoto, Shinsuke %A Maeshima, Hirotaka %A Onishi, Yoji %A Ohira, Masao %A Matsumoto, Ken-ichi %K apache %K email %K mailing list %X Coordination is one of the keys for the success of open source software (OSS) communities because geographically distributed members need to collaborate on their work using communication tools (e.g., mailing lists, bulletin board systems, bug tracking systems, and so on). In this paper, we investigated the informal social structure among developers and users by analyzing two mailing lists of developers and users in the Apache community based on betweenness centrality, one centrality measure proposed by Freeman. From the analysis results, we found that (1) participants with high betweenness coordinated activities between developers and users and (2) some participants have been functioning as coordinators in the community for a long time. %B OSS2008: Open Source Development, Communities and Quality (IFIP 2.13) %S IFIP International Federation for Information Processing %I Springer %V 275/2008 %P 81 - 92 %8 2008/// %G eng %& 7 %R http://dx.doi.org/10.1007/978-0-387-09684-1_7 %> https://flosshub.org/sites/flosshub.org/files/Analysis%20of%20Coordination.pdf