In order to increase our ability to use measurement to support software development practise we need to do more analysis of code. However, empirical studies of code are expensive and their results are difficult to compare. We describe the Qualitas Corpus, a large curated collection of open source Java systems. The corpus reduces the cost of performing large empirical studies of code and supports comparison of measurements of the same artifacts. We discuss its design, organisation, and issues associated with its development.
Proceedings of 'Software for Improving Quality of Life', the 17th Asia Pacific Software Engineering Conference (APSEC 2010), Sydney, New South Wales, Australia, 30 November - 03 December 2010 / Jun Han and Tran Dan Thu (eds.),