Redesigning the Spoofax Testing Language

The Spoofax Testing Language (SPT) is the existing solution for testing in the Spoofax language workbench. It allows developers of domain specific languages to write their test cases declaratively. As it aims to be implementation agnostic, developers don't need to concern themselves with the details of the artifacts generated by Spoofax, and can...

Runtime analysis of Android apps based on their behaviour

In the modern world, Smartphones are everywhere and Android is the most used operating system. <br/>To protect these devices against malicious actions, the behaviour of Android apps needs to be studied.<br/><br/>Current tooling does not provide complete insight into the behaviour of an Android app.<br/>A tool was built to observe what goes on...

Anomaly detection and diagnosis in ASML event log using attentional LSTM network

In the ASML test system, all activity events of the test are continuously recorded in event logs, and these logs are intended to help people diagnose the root cause of a failure. However, due to the large scale of the logs, manual inspection of these logs consumes lots of effort and time, and the lack of expert knowledge of engineers makes the...

Comparing Spreadsheets: A New Strategy for Analysis, Detection and Aggregation of Spreadsheet Differences

Comparing spreadsheet files is a new, unexplored research domain in computer science. Methods for regular file comparison are not straightforwardly applicable to spreadsheet files, because they are fundamentally different. Spreadsheets are binary files, the structure of spreadsheets is two-dimensional, they contain both data and calculations,...

Intelligent Agents that Support Students with Self-Study

University students are expected to study on their own for large amounts of time. However a lot of these hours are not spent effectively by students. Eventually students who have trouble with self-studying in an effective manner may end up failing courses because of this. When students realise they have a (self-study) problem they can seek aid...

It's time for some Alexercise: A comparison between reflection capabilities of activity trackers and intelligent personal assistants

Recently published health reports from governments of western countries and the World Health Organization (WHO) provide insights on health benefits of being physically active. Performing physical activity of moderate intensity is, amongst others, associated with a smaller risk on symptoms of depression, cardiovascular disease and diabetes....

Experimental Performance Analysis of Graph Analytics Frameworks

Big data, the large-scale collection and analysis of data, has become ubiquitous in the modern, digital society. Within the big data landscape, graphs are widely used to study collections of entities and the complex relationships that connect them. The analysis of graphs has applications in social networks, logistics, finance, bioinformatics,...

Automatic Ordering of Code Changes for Review

Code review has been proved to be an extremely important practice to ensure softwarequality. In recent years, the trend has moved towards modern code review, a lightweight and less strict paradigm. Despite its many advantages, this approach still has room for further improvement, especially in the area of cognitive support for reviewers.<br/...

Active Learning for Overlay Prediction in Semi-conductor Manufacturing

In the manufacturing of semi-conductor devices there is a constant demand for increasing precision and yield. Measuring and controlling overlay errors is essential in this process, but these measurements are difficult and costly. Predictive models can be used as an addition to measurements, but they required labelled data for training. To...

Exploring DDU in Practice

The quality of test suites is commonly measured using adequacy metrics that focus on error detection, like test coverage. However, the diagnostic performance of spectrum-based fault localization techniques, that can potentially reduce the time spent on debugging, rely on diagnosability of test suites --- the property of faults to be easily and...

An Exploratory Study on Faults in Web API Integration

Nowadays, service-oriented architectures are more popular than ever, and more and more companies and organizations depend on services offered through Web APIs. The capabilities and complexity of Web APIs differ from service to service, and therefore the impact of API errors varies. API problem cases related to Adyen’s payment service were found...