Linking Entities to a Knowledge Base with Query Expansion

• Main Authors: GOTTIPATI, Swapna, JIANG, Jing
• Format: text
• Language: English
• Published: Institutional Knowledge at Singapore Management University 2011
• Subjects: Contextual information; Knowledge base; Language model; Named entities; Query expansion; Query language model; World knowledge; Databases and Information Systems
• Online Access: https://ink.library.smu.edu.sg/sis_research/1377; https://ink.library.smu.edu.sg/context/sis_research/article/2376/viewcontent/D11_1074.pdf
• Institution: Singapore Management University

In this paper we present a novel approach to entity linking based on a statistical language model-based information retrieval with query expansion. We use both local contexts and global world knowledge to expand query language models. We place a strong emphasis on named entities in the local contexts and explore a positional language model to weigh them differently based on their distances to the query. Our experiments on the TAC-KBP 2010 data show that incorporating such contextual information indeed aids in disambiguating the named entities and consistently improves the entity linking performance. Compared with the official results from KBP 2010 participants, our system shows competitive performance.