Abstract
This paper describes MITRE's participation in the Paraphrase and Semantic Similarity in Twitter task (SemEval-2015 Task 1). This effort placed first in Semantic Similarity and second in Paraphrase Identification with scores of Pearson's r of 61.9%, F1 of 66.7%, and maxF1 of 72.4%. We detail the approaches we explored including mixtures of string matching metrics, alignments using tweet-specific distributed word representations, recurrent neural networks for modeling similarity with those alignments, and distance measurements on pooled latent semantic features. Logistic regression is used to tie the systems together into the ensembles submitted for evaluation.
Cite
CITATION STYLE
Zarrella, G., Henderson, J., Merkhofer, E. M., & Strickhart, L. (2015). MITRE: Seven Systems for Semantic Similarity in Tweets. In SemEval 2015 - 9th International Workshop on Semantic Evaluation, co-located with the 2015 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies, NAACL-HLT 2015 - Proceedings (pp. 12–17). Association for Computational Linguistics (ACL). https://doi.org/10.18653/v1/s15-2002
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