Observations on Search Engines meeting requirements
- Accuracy is hard to establish, though statistical systems are in general superior to Boolean ones
- Only RetrievalWare allows you to search for images by color and texture
- applies to severely degraded OCR text
- Several systems offer integration with structured dbs (TOPIC, PLS, OpenText , Oracle)
- “tuples” versus “docs”: Substantial issues in terms of integrated queries and indexing (cf. MITRE’s current DIA project)