Structure-Discourse Hierarchical Graph for Conditional Question Answering on Long Documents.
Haowei DuYansong FengChen LiYang LiYunshi LanDongyan ZhaoPublished in: ACL (Findings) (2023)
Keyphrases
- question answering
- information retrieval
- passage retrieval
- natural language questions
- syntactic information
- question answering systems
- natural language
- graph structure
- candidate answers
- answering questions
- natural language processing
- information extraction
- question classification
- document retrieval
- cross language
- relation extraction
- information retrieval systems
- structured data
- named entities
- qa clef
- semantic roles
- document collections
- text documents
- machine learning
- free text
- sentence retrieval
- knowledge representation
- answer validation