Keyphrases
- data sets
- small number
- missing data
- information sources
- data processing
- data analysis
- data sources
- end users
- database
- knowledge discovery
- statistical analysis
- computer systems
- data mining
- image data
- raw data
- database systems
- constantly growing
- data distribution
- input data
- original data
- data quality
- huge data
- web documents
- semantic web
- semi supervised
- prior knowledge
- data structure
- high quality
- training data
- information retrieval