Welcome to 4th International Workshop on Emerging Trends in Software Metrics (WETSoM 2013)

Welcome to WETSoM 2013, the 4th International Workshop on Emerging Trends in Software Metrics. Since its start, WETSoM has attracted a blend of academic and industrial researchers, creating a stimulating atmosphere to discuss the progresses of software metrics. A key motivation for this workshop is the low impact that software metrics still has on current software development, raising the need for empirically evaluating the effectiveness of existing metrics, as well as to identify directions for development of new metrics.