Blind Relevance Feedback and Named Entity based Query Expansion for Geographic Retrieval at GeoCLEF 2006.
Kerstin BischoffThomas MandlChrista Womser-HackerPublished in: CLEF (Working Notes) (2006)
Keyphrases
- blind relevance feedback
- query expansion
- named entities
- text retrieval
- retrieval effectiveness
- information retrieval systems
- named entity recognition
- information extraction
- information retrieval
- co occurrence
- language model
- text mining
- language modeling
- question answering
- relevance feedback
- natural language processing
- relevant documents
- retrieval model
- pseudo relevance feedback
- original query
- automatic query expansion
- query terms
- unsupervised learning
- document retrieval
- feature space
- digital libraries
- average precision
- query translation
- noun phrases
- training data