@InProceedings{shi-li-wang:2010:POSTERS, author = {Shi, Zhiwei and Li, Peng and Wang, Bin}, title = {Using Clustering to Improve Retrieval Evaluation without Relevance Judgments}, booktitle = {Coling 2010: Posters}, month = {August}, year = {2010}, address = {Beijing, China}, publisher = {Coling 2010 Organizing Committee}, pages = {1131--1139}, url = {http://www.aclweb.org/anthology/C10-2130} }