Abstract
Conference Title: 2018 Annual Reliability and Maintainability Symposium (RAMS) Conference Start Date: 2018, Jan. 22 Conference End Date: 2018, Jan. 25 Conference Location: Reno, NV, USA Engineered systems increasingly depend on software. As a result, system and software engineers require efficient methods to track defect identification and removal efforts during the software development lifecycle. To support such activities, we have developed a free and open source version of the SoftWare Error Estimation Program (SWEEP), named SweET (Software Defect Estimation Tool), which has not been publicly available to the software engineering community for several years. SWEEP's four modes have been simplified and combined into three modes namely, (i) timebased, (ii) phase-based, and (iii) defect insertion in SweET. Moreover, SweET uses the Weibull model, which is more flexible than the Rayleigh model included in SWEEP. Furthermore, the model fitting performed with least squares estimation in SWEEP has been replaced with an expectation conditional maximization (ECM) algorithm, which is both stable and efficient.