Mengxiang Lin

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Spectra-based fault localization (SFL) techniques have brought encouraging results and a variety of program spectra have been proposed to locate faults. Different types of abnormal behaviors may be revealed by different kinds of spectra. Compared to techniques using single spectra type, techniques combining multiple types of spectra try to leverage the(More)
During software evolution, new released versions still contain many bugs. One common scenario is that end users encounter regression faults and submit them to bug tracking systems. Different from in-house regression testing, typically only one test input is available, which passes the old version and fails the modified new version. To address the issue,(More)
Term weighting schemes often dominate the performance of many classifiers, such as kNN, centroid-based classifier and SVMs. The widely used term weighting scheme in text categorization, i.e., tf.idf, is originated from information retrieval (IR) field. The intuition behind idf for text categorization seems less reasonable than IR. In this paper, we(More)
The number of bug reports in complex software increases dramatically. Since bugs are still triaged manually, bug triage or assignment is a labor-intensive and time-consuming task. Without knowledge about the structure of the software, testers often specify the component of a new bug incorrectly. Meanwhile, it is difficult for triagers to determine the(More)
Symbolic execution based test generation has made progress in recent years. However, in order to scale to larger programs there are some issues to be solved. Among them, generating a set of feasible paths to achieve high coverage gets more attention. In this paper, we focus on how to increase covering efficiency while maintaining high coverage. To achieve(More)
Wenyu DONG, Ke XU, Mengxiang LIN State Key Laboratory of Software Development Environment, Computer Science & Engineering Department, Beijing University of Aeronautics & Astronautics, Beijing, 100083, P. R. China {wydong, kexu, mxlin}@nlsde.buaa.edu.cn Abstract: This paper presents an augmented situation calculus-based approach to model autonomous computing(More)
Script-based automated regression testing is widely used in industry. In this work, we focus on failed tests in a real regression test project. The causes of 197 failed tests produced in automated testing are examined and categorized based on an analysis procedure presented. The result shows that incorrect scripts, oracle mismatches, test tool bugs and(More)