A Human-Machine Approach to Preserve Privacy in Image Analysis Crowdsourcing Tasks

Modern web information systems use machine learning models to provide personalized user services and experiences. However, machine learning models require annotated data for training, and creating annotated data is done through crowdsourcing tasks. The content used in annotation crowdsourcing tasks like medical records and images might contain...

Log Differencing using State Machines for Anomaly Detection

Huge amounts of log data are generated every day by software. These data contain valuable information about the behavior and the health of the system, which is rarely exploited, because of their volume and unstructured nature. Manually going through log files is a time-consuming and labor-intensive procedure for developers. Nonetheless logging...

Visualisation of Code Changes for Code Review

Code reviews are a widely adopted practice in software engineering that is proven to increase the quality of the code. Despite its evolution in the last decade, it still presents a number of challenges, such as understanding the changeset in review. In this thesis we research the usage of Software Visualisation paradigms to aid reviewers in the...

Solving a real-world rail maintenance scheduling problem

The rail network in the Netherlands is one of the busiest in Europe. To ensure a safe and reliable infrastructure, preventive maintenance is of utmost importance. ProRail, the sole maintainer of the railway infrastructure in the Netherlands, spends hundreds of millions of dollars on maintenance each year. Due to the complexity and busyness of...

Customer Verification Engine: Automated Customer Verification for a Peer-to-Peer Lending Platform

There is a lot involved in providing a loan as a company, mostly in terms of legalities and risk management. As a lender it is important to have a clear record of the customers applying for a loan, as this helps assessing the risk that comes with providing a loan. Furthermore, it is required by law to know who it is that you are providing a loan...

Gamification of a Static Analysis Tool: A brief look into developer motivation

Software development is more than only implementing the functional code. A developer is also responsible for writing code measuring up to certain standards and conventions. These conventions make sure that the code is of a particular quality that improves readability and eases maintainability. Some of these conventions are checked by automated...

Testing Code Generators against Definitional Interpreters

Large companies suffer from the increasing complexity that exist in their software systems. Evolving their software becomes even harder if we consider that a change in one system can affect several other parts of their software architecture. Especially banks that need to be always complied with regulations, have to constantly make changes in...

Intermittent Kernel: A First Attempt

Energy harvesting and battery-free sensing devices show great promise for revolutionizing computing in every known area while expanding to non-conventional use-cases. The promise of cheap, dense, and ubiquitous sensing technology brings new applications for the Internet of Things. However, the future programming model is blurry and complex. With...

Faster Onboarding of Developers in Existing Codebases

When a new software developer joins bunq, a Dutch bank, (s)he will need some time to get familiar with the existing codebase. Preferably, the time necessary for the familiarisation is as short as possible. The faster the developer is up to speed, the faster (s)he can contribute to new features and help solving bugs. This research develops a...

Predicting vulnerable files by using machine learning method

Web applications have been gaining increased popularity around the globe, in such a way that a growing number of users are attracted to make use of the functionality and information provided by these applications. While providing solutions to complicated problems in a fast and reliable way is one of the most advantages of using web applications,...

Action Selection Policies for Walking Monte Carlo Tree Search

Recent Reinforcement Learning methods have combined function approximation and Monte Carlo Tree Search and are able to learn by self-play up to a very high level in several games such as Go and Hex. One aspect in this combination<br/>that has not had a lot of attention is the action selection policy during self-play, which could influence the...

Zesje: Web-based paper exam grading system

Grading can be a very time-consuming activity for teachers. For this reason, numerous tools exist to aid teachers in grading. One of these tools is Zesje, a web application that allows electronic grading of paper-based exams. A major drawback of Zesje was that teachers were required to create their exams with LaTeX, a popular document...

Project Mapyen: A network analysis tool to identify anomalous host behaviours

The evolution of the cyber threat landscape drives companies towards state-of-the-art security monitoring techniques. Adyen, a payment service provider company, has both legal and moral obligations to perform security monitoring within the company to remain an ethical and sustainable business. The challenge is to uncover a well-founded solution...

Point of Sale Test Automation