Results Fusion in Heterogeneous Information Sources

1
Results Fusion in Heterogeneous Information
Sources

• Srikanth Kallurkar

2
Motivation

• Low Retrieval Effectiveness in DIR
• Limitation of Automated Database Selection (ADS)
  techniques
• Causes
• Heterogeneity of information sources
• Heterogeneous data
• Possible restrictions to search domains
• Resultant limitation of Results Fusion techniques

3
DIR Scheme
Information Sources
Query Formulator
Results Fusionator
Results
Query
4
Fusion Scheme

• Heterogeneous Information Sources
• Recursive Solution
• Fusion in pairs
• Catalog Solution
• Present user with best N results (lists)
• Annotate each answer with system generated
  confidence values
• Heterogeneous Data
• Cluster Data (Preferably Online)
• Reduce scope of search
• Metadata weighted fusion