Research methods Basic concepts

Theoretical and technical research  Describe and formalise phenomenons mathematically  Make (non-trivial) proofs in the formalism  Improve algorithms and tools  Implement tools

Quantitative methods  Surveys  Empirical investigations  Experiments  Controlled experiments  Replicated experiments  Measurements  Experience factory  Questionnaires  Frequency analysed protocol coding

Qualitative methods  Case-study  Participatory observation  Action research  Interviews  Focus groups  Protocol analysis