This page contains resources used in the following paper:
A Test Collection for Entity Search in DBpedia, K. Balog and R. Neumayer. In: 36th international ACM SIGIR conference on Research and development in Information Retrieval (SIGIR 2013), pages 737–740, July 2013.
You might also be interested in reading the corresponding blog post.
Update: Version 2 of the DBpedia-Entity collection has been released. It is highly recommended to use the new version.