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

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