Linking data to ontology

Eduard Hovy, Sr Proj Ldr, ISI

Usha Ramachandran, GRA, ISI

Results: how often does DM select correct match?

• Input: 98 nodes in 10 domain model clusters

• Background: all of SENSUS

• Keep 10 best proposals, plus true match

• DM takes 10–50 mins per cluster

• Nice curve: the tighter the matching

cluster, the higher the score...

Automatically match concepts of domain

model clusters into ontology:

1. Propose matching ontology concepts:

• NAME—compare all substrings of names
• DEF—compare definitions, as bags of stemmed words

2. Filter to select best match:

• DISPERSAL MATCH (DM)—select matching cluster with minimum sum of semantic link distances, one candidate per concept

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