Ontology-based Case-Based Reasoning (OntCBR) for Engineering ...
Ontology-based Case-Based Reasoning (OntCBR) for Engineering ...
Ontology-based Case-Based Reasoning (OntCBR) for Engineering ...
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9. Discussion<br />
Why CSN is effective to search a similar concept structure?<br />
c2<br />
If we only compare concepts in concept structures,<br />
we can miss the meanings of relations in the concept structure.<br />
Concept structure: cs1 Concept structure: cs2<br />
c1<br />
c1<br />
r4<br />
r5<br />
r1 r2 r1 r3<br />
Axiom<br />
∀x,y r4(x,y) → r5(x,y)<br />
c4<br />
c3 c2 c3<br />
c4<br />
58<br />
Concept vector similarity (FEM paper)<br />
CBS(cs1, cs2) = 100%<br />
CBS(v1, v2) = (v1 * v2) / ||v1|| * ||v2||<br />
v1=[1, 1, 1, 1]<br />
v2=[1, 1, 1, 1]<br />
CSN similarity (Our approach)<br />
NetSim(cs1, cs2) = 56.6%<br />
NetSim(cs1, cs2) =<br />
( rel_sim(r1, r1) * con_sim(c2, c2)<br />
+ rel_sim(r2, r3) * con_sim(c3, c3)<br />
+ rel_sim(r4, r5) * con_sim(c4, c4))<br />
/ 3<br />
= ( 1*1 + 0*1 + 0.7*1)/3 = 1.7/3 = 0.566
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