Proximity Experiments
Sizes of subsuming queries vs. sample queries.
Sample queries: Field contains w1 (W) w2 … (W) wn
- E.g.: Title contains digital (W) libraries.
Phrases randomly selected from:
- Inspec Thesaurus.
- Free On-Line Dictionary of Computing.
Subsuming queries: Field contains w1 op w2 … op wn
- E.g.: Title contains digital AND libraries.
Fields: Title (short), Abstract (long), Text (longer).
Source collection: Inspec, Dialog-275 (Computer Database).