Synonyms: Exact match against WordNet synonym relations

This metric aims to evaluate whether a generated label is a recognised synonym of a gold-standard label, using WordNet's synset relations. It returns 1 when the two labels appear in the same synset and 0 otherwise. The method was considered but excluded from the final pipeline because WordNet poorly covers domain-specific ontology vocabulary.

Example:

Generate_Label_1: automobile

Generate_Label_2: hound

Generate_Label_3: Wine

Gold_Standard_Label_1: car

Gold_Standard_Label_2: dog

Gold_Standard_Label_3: Liquor

Result:

1. Synonyms(Generate_Label_1, Gold_Standard_Label_1) = 1
2. Synonyms(Generate_Label_2, Gold_Standard_Label_2) = 1
3. Synonyms(Generate_Label_3, Gold_Standard_Label_3) = 0

What is being measured?

This metric captures lexicographic synonymy as encoded in WordNet. It is useful as a complementary signal in general-domain text but insufficient for technical labels typical in evaluated ontologies, which is why it is retained here only for transparency and reproducibility.