In this paper we describe our participation in the Knowledge Base Population (KBP) track at TAC 2011. The architecture of our slot filling system is the same as last year. We mainly focus on developing a new system for the cross-language entity linking task. We compare the performance of monolingual retrieval and cross-lingual retrieval for entity linking. For NIL entity clustering, we group retrieved documents into reference clusters and assign NIL entities to a cluster by calculating the similarity between its document and each cluster.
['Fang Xu', 'Stefan Kazalski', 'Grzegorz Chrupala', 'Benjamin Roth', 'Xujian Zhao', 'Michael Wiegand', 'Dietrich Klakow']
Saarland University Spoken Language Systems Group at TAC KBP 2011