Learning to Rank Answers on Large Online QA Collections.
Mihai SurdeanuMassimiliano CiaramitaHugo ZaragozaPublished in: ACL (2008)
Keyphrases
- learning to rank
- information retrieval
- balancing exploration and exploitation
- question answer
- question answering
- ranking functions
- loss function
- document retrieval
- evaluation measures
- qa systems
- collaborative filtering
- direct optimization
- learning to rank algorithms
- ranking svm
- query dependent
- document collections
- evaluation metrics
- machine learning
- passage retrieval
- retrieval systems
- test collection
- supervised learning
- digital libraries
- directly optimize
- learning algorithm
- query expansion
- information retrieval systems
- reinforcement learning
- decision trees
- metadata