Small screen detected. You are viewing the mobile version of SlideWiki. If you wish to edit slides you will need to use a larger device.
For each term, t, in a query, expand the query with synonyms and related words of t from the thesaurus
feline → feline cat
May weight added terms less than original query terms.
Generally increases recall
Widely used in many science/engineering fields
May significantly decrease precision, particularly with ambiguous terms.
“interest rate” “interest rate fascinate evaluate”
There is a high cost of manually producing a thesaurus
And for updating it for scientific changes
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License