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ICSE 2020
Mon 5 - Sun 11 October 2020 Yongsan-gu, Seoul, South Korea
Mon 5 Oct 2020 17:35 - 17:50 at Hanra C - Software Activities

Researchers usually discretize a continuous dependent variable into two target classes by introducing an artificial discretization threshold (e.g., median). However, such discretization may introduce noise (i.e., discretization noise) due to ambiguous class loyalty of data points that are close to the artificial threshold. Previous studies do not provide a clear directive on the impact of discretization noise on the classifiers and how to handle such noise. In this paper, we propose a framework to help researchers and practitioners systematically estimate the impact of discretization noise on classifiers in terms of its impact on various performance measures and the interpretation of classifiers. Through a case study of seven software engineering datasets, we find that: 1) discretization noise affects the different performance measures of a classifier differently for different datasets; 2) Though the interpretation of the classifiers are impacted by the discretization noise on the whole, the top 3 most important features are not affected by the discretization noise. Therefore, we suggest that practitioners and researchers use our framework to understand the impact of discretization noise on the performance of their built classifiers and estimate the exact amount of discretization noise to be discarded from the dataset to avoid the negative impact of such noise.

Mon 5 Oct

16:10 - 17:50: Paper Presentations - Software Activities at Hanra C
icse-2020-Journal-First16:10 - 16:24
Farhaan FowzeUniversity of Florida, Dave (Jing) TianPurdue University, Grant HernandezUniversity of Florida, Kevin ButlerUniv. Florida, Tuba YavuzUniversity of Florida
icse-2020-Journal-First16:24 - 16:38
Sangameshwar PatilDept. of CSE, IIT Madras and TRDDC, TCS, Balaraman RavindranIIT Madras
icse-2020-Journal-First16:38 - 16:52
Valentin ManèsCSRC, KAIST, HyungSeok HanKAIST, Choongwoo HanNAVER Corporation, Sang Kil ChaKAIST, Manuel EgeleBoston University, USA, Edward SchwartzCarnegie Mellon University, Maverick WooCarnegie Mellon University
icse-2020-Journal-First16:52 - 17:07
Gunel JahangirovaUniversità della Svizzera italiana, David ClarkUniversity College London, Mark Harman, Paolo TonellaUniversità della Svizzera italiana
icse-2020-Journal-First17:07 - 17:21
Claudio MenghiUniversity of Luxembourg, SnT, Christos TsigkanosTU Vienna, Patrizio PelliccioneChalmers | University of Gothenburg and University of L'Aquila, Carlo GhezziPolitecnico di Milano, Thorsten BergerChalmers | University of Gothenburg
icse-2020-Journal-First17:21 - 17:35
Rubing HuangJiangsu University, Weifeng SunJiangsu University, Yinyin XuJiangsu University, Haibo ChenJiangsu University, Dave ToweyUniversity of Nottingham Ningbo China, Xin XiaMonash University
icse-2020-Journal-First17:35 - 17:50
Gopi Krishnan RajbahadurQueen's University, Shaowei WangMississippi State University, Yasutaka KameiKyushu University, Ahmed E. HassanQueen's University