Enabling Log Recommendation Through Machine Learning on Source Code

Logging is a common practice in software development that assists developers with the maintenance of software. Logging a system optimally is a challenging task, thus Li et al. have proposed a state-of-the-art log recommendation model. However, no further attempts exist to improve the model or reproduce their results using different training data...

Language-agnostic Incremental Code Clone Detection

Code duplication is a form of technical debt frequently observed in software systems. Its existence negatively affects the maintainability of a system in numerous ways. In order to tackle the issues that come with it, various automated clone detection techniques have been proposed throughout the years. However, the vast majority of them operate...

Dead code elimination for web applications written in dynamic languages

Dead code is source code that is not necessary for the correct execution of an application. Dead code is a result of software ageing. It is a threat for maintainability and should therefore be removed. Many organizations in the web domain have the problem that their software grows and demands increasingly more effort to maintain, test, check out...

Aiding Software Developers to Test with TestNForce

Regression testing is an expensive process because, most of times, all the available test cases are executed. Many techniques of test selection/filtering have been researched and implemented, each having its own strong and weak points. This paper introduces a tool that helps developers and testers to identify the tests that need to be executed...

Understanding Ajax Applications by using Trace Analysis

Ajax is an umbrella term for a set of technologies that allows web developers to create highly interactive web applications. Ajax applications are complex; they consist of multiple heterogeneous artifacts which are combined in a highly dynamic fashion. This complexity makes Ajax applications hard to understand, and thus to maintain. For this...

Software maintenance in a data distribution service with complex event processing

This thesis covers the topic of software maintenance on a system which consists of a Data Distribution Service (DDS) and a Complex Event Processing (CEP) engine. Software maintenance on this system is hard to perform, because of the dependencies between the different components. This thesis answers the main research question: ”To which extent do...

JRET: A tool for the reconstruction of sequence diagrams from program executions

As opposed to static analysis, in which source code is inspected in order to increase program understanding, dynamic analysis concerns the actual execution of a program and the collection of runtime data. Several strategies to retrieve dynamic information exist, including source code instrumentation and the use of a customized debugger. Since...

Studying Co-evolution of Production and Test Code Using Association Rule Mining

Unit testing is generally accepted as an aid to produce high quality code, and can provide quick feedback to developers on the quality of the software. To have a high quality and well maintained test suite requires the production and test code to synchronously co-evolve, as added or changed production code should be tested as soon as possible....