Structured Index System at NTCIR1: Information Retrieval using Dependency Relationship between Words.
Atsushi MatsumuraAtsuhiro TakasuJun AdachiPublished in: NTCIR (1999)
Keyphrases
- information retrieval
- test collection
- ir evaluation
- index terms
- patent retrieval
- information retrieval systems
- document collections
- vector space model
- retrieval effectiveness
- search engine
- structured queries
- n gram
- index structure
- dependency relations
- relevant documents
- dependency structure
- retrieval model
- web retrieval
- question answering
- structured data
- keywords
- text mining
- language modeling
- language model
- document retrieval
- query expansion
- learning to rank
- inverted index
- information extraction
- retrieval systems
- english chinese
- information access
- document representation
- average precision
- relevance feedback
- image retrieval