SLOQUE: slot-based query expansion for complex questions

Searching answers to complex questions is a challenging IR task. In this paper, we examine the use of query templates with semantic slots to formulate slot-based queries. These queries have query terms assigned to entity and relationship slots. We develop several query expansion methods for slot-based queries so as to improve their retrieval effectiveness on a document collection. Each method consists of a combination of term scoring scheme, term scoring formula, and term assignment scheme. Our preliminary experiments evaluate these different slot-based query expansion methods on a collection of news documents, and conclude that: (1) slot-based queries yield better retrieval accuracy compared to keyword-based queries in the complex question problems; and (2) directly applying traditional query expansion on the query terms of each slot does not always work well. Categories and Subject Descriptors H.3.3 [Information Storage and Retrieval]: Information Search and Retrieval - Query form...

• Type: Conference
• Year: 2007
• Where: CIKM
• Authors: Maggy Anastasia Suryanto, Ee-Peng Lim, Aixin Sun, Roger H. L. Chiang
• Keywords: CIKM 2007, Query Expansion, Query Expansion Methods, Query Terms