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Align, Disambiguate, and Walk A Unified Approach for Measuring - PowerPoint PPT Presentation

Align, Disambiguate, and Walk A Unified Approach for Measuring Semantic Similarity Semantic Similarity; how similar are a pair of lexical items? Semantic Similarity Semantic Similarity Semantic Similarity Sentence level


  1. Experiments • – Semantic Textual Similarity (SemEval-2012) • – Synonymy recognition (TOEFL dataset) – Correlation-based (RG-65 dataset)

  2. Experiments • – Semantic Textual Similarity (SemEval-2012) • – Synonymy recognition (TOEFL dataset) – Correlation-based (RG-65 dataset) • – Coarsening WordNet sense inventory

  3. Experiment 1 Similarity at Sentence level • – 5 datasets – Three evaluation measures • ALL, ALLnrm, and Mean

  4. Experiment 1 Similarity at Sentence level • – 5 datasets – Three evaluation measures • ALL, ALLnrm, and Mean • – UKP2 (Bär et al., 2012) – TLSim and TLSyn ( Šarić et al., 2012 )

  5. Experiment 1 Similarity at Sentence level Features – Main features • Cosine • Weighted Overlap • Top-k Jaccard

  6. Experiment 1 Similarity at Sentence level Features – Main features • Cosine • Weighted Overlap • Top-k Jaccard – String-based features • Longest common substring • Longest common subsequence • Greedy string tiling • Character/word n-grams

  7. Experiment 1 Similarity at Sentence level STS Results TLsim TLsyn UKP2 ADW TLsim TLsyn UKP2 ADW TLsim TLsyn UKP2 ADW

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