Thesaurus
A thesaurus is a semantic tool used for information retrieval, query expansion and indexing, among other purposes. It is basically a selection of the basic vocabulary in a domain supplemented with information about synonyms, homonyms, generic terms, part/whole terms, “associative terms” and other information (e.g. frequency and history of terms in a given database).
Source : http://www.iva.dk/bh/lifeboat_ko/concepts/thesauri_and_metathesauri.htm
Truncations
Truncated lacking an expected or normal element (as a syllable) at the beginning or end
Source: Meeriam-Webster dictionary. Available from : http://www.merriam-webster.com/dictionar
Examples :
|
Variants |
Economical vs Economics |
Economic* |
0-n |
|
Singular vs Plural |
Stent vs Stents |
Stent? |
0-1 |
|
EN-us vs EN-uk |
Hematology vs Haematology |
H?ematology |
0-1 |
|
Prefixes |
Pre natal vs prenatal vs pre-natal |
Pre?natal |
0-1 |