The ACM / IEEE International Symposium on Empirical Software Engineering and Measurement (ESEM) is the premier conference to present research results related to empirical software engineering. These include the discussion of: i) strengths and weaknesses of software engineering technologies and methods from an empirical viewpoint; ii) the design and analysis of empirical studies, ranging from controlled experiments to field studies and from quantitative to qualitative studies; iii) the use of data and measurement to understand, evaluate, and model software engineering phenomena. The symposium encourages the presentation of both novel work and replication studies. ESEM provides a stimulating forum where researchers and practitioners can present and discuss recent research results on a wide range of topics, in addition to also exchanging ideas, experiences and challenging problems.