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Table 1 An example of WordSimilarityMatrix constructed for query term "gastro reflux".

From: Effectively processing medical term queries on the UMLS Metathesaurus by layered dynamic programming

   Word Vectorof Metathesaurus
   ... gastro (at i) ... Oesophageal (at j) ... reflux (at k) ...
Query term gastro ... 1 (gastro) ... 0.235294 (so/ga) ... 0.166667(r) ...
  reflux ... 0.166667 (r) ... 0.235294 (el) ... 1(reflux) ...