agile defects prediction

  • Goldstein M.
  • Segall I.

Defects prediction is an important and widely researched area. Multiple models involving various software aspects and metrics have been proposed and evaluated in the past. Most of them look at static properties of a specific version of software system or at the entire history of changes for that system. This often leads to prediction of defects for software elements that had many defects in the past and not necessarily in the present. Moreover, it leads to defect prediction on code that may not have changed for some time and is therefore unlikely to contain new defects. In the paper we present a novel approach for defects prediction that compares two consequent releases of a software artifact by analyzing the changes at different levels of granularity. We show that our approach is able to classify elements that were added or changed during the development of the new version as defect prone with high precision. Additionally, we provide a hierarchical visualization technique that guides the code review and testing process, highlighting defect prone code. This saves review and testing time while improving the quality of the new release of the software. Our technique is aligned with the modern Agile and Dev-Ops development methodologies that have short development cycles and frequent releases, as it focuses only on what has actually changed in the code.

Recent Publications

January 01, 2018

Fair Dynamic Spectrum Management for QRD-Based Precoding with User Encoding Ordering in Downstream G.fast Transmission

In next generation DSL networks such as G.fast, employing discrete multi-tone transmission in high frequencies up to 212 MHz, the crosstalk among lines reaches very high levels. To precompensate the crosstalk in downstream transmission, QRD-based precoding has been proposed as a near-optimal dynamic spectrum management (DSM) technique. However, the performance ...

January 01, 2018

Practical Mitigation of Passive Intermodulation in Microstrip Circuits

This paper presents new experimental evidence and a novel practical approach for mitigation of passive intermodulation (PIM) in microstrip circuits fabricated on commercial printed circuit board laminates. The mechanisms of distributed PIM in microstrip circuits are reviewed and a phenomenology of PIM generation due to locally enhanced electromagnetic fields at ...

January 01, 2018

Efficient Cooperative HARQ for Multi-Source Multi-Relay Wireless Networks

In this paper, we compare the performance of three different cooperative Hybrid Automatic Repeat reQuest (HARQ) protocols for slow-fading half-duplex orthogonal multiple access multiple relay channel. Channel State Information (CSI) is available at the receiving side of each link only. Time Division Multiplexing is assumed, where each orthogonal transmission occurs ...