FactQA: question answering over domain knowledge graph based on two-level query expansion.
Xiaoming ZhangMingming MengXiaoling SunYu BaiPublished in: Data Technol. Appl. (2020)
Keyphrases
- query expansion
- question answering
- domain knowledge
- information retrieval
- passage retrieval
- information retrieval systems
- language model
- information extraction
- sentence retrieval
- language modeling
- retrieval effectiveness
- text retrieval
- relevant documents
- pseudo relevance feedback
- natural language processing
- natural language
- relevance feedback
- retrieval model
- cross language
- named entities
- text mining
- document collections
- document retrieval
- query terms
- learning to rank
- query translation
- retrieved documents
- short queries
- learning algorithm
- knowledge base
- relevance model
- text categorization