Keyphrases
- active learning
- relevance feedback
- query processing
- similarity graph
- response time
- database
- flow graph
- query expansion
- random walk
- query evaluation
- random sampling
- data sources
- structured data
- object retrieval
- graph structure
- learning strategies
- graph model
- data sets
- learning process
- query graph
- selective sampling
- database systems
- bipartite graph
- keyword search
- query terms
- user queries
- semi supervised
- training set
- data structure
- weighted graph
- keywords
- directed graph
- graph representation
- similarity scores
- learning algorithm
- information retrieval
- rewriting rules