Comparative Evaluation of Focused Retrieval : 9th International Workshop of the Inititative for the Evaluation of XML Retrieval, INEX 2010, Vught, The Netherlands, December 13-15, 2010, The Netherlands, Revised Selected Papers - Shlomo Geva, Jaap Kamps, Ralf Schenkel, Andrew Trotman ((Lecture Notes in Computer Science))