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Poster
Unfolding Recursive Autoencoders for Paraphrase Detection
Richard Socher · Eric H Huang · Jeffrey Pennin · Andrew Y Ng · Christopher D Manning

Wed Dec 14 08:45 AM -- 02:59 PM (PST) @ None #None
in Poster Session »

Paraphrase detection is the task of examining two sentences and determining whether they have the same meaning. In order to obtain high accuracy on this task, thorough syntactic and semantic analysis of the two statements is needed. We introduce a method for paraphrase detection based on recursive autoencoders (RAE). Our unsupervised RAEs are based on a novel unfolding objective and learn feature vectors for phrases in syntactic trees. These features are used to measure the word- and phrase-wise similarity between two sentences. Since sentences may be of arbitrary length, the resulting matrix of similarity measures is of variable size. We introduce a novel dynamic pooling layer which computes a fixed-sized representation from the variable-sized matrices. The pooled representation is then used as input to a classifier. Our method outperforms other state-of-the-art approaches on the challenging MSRP paraphrase corpus.

Author Information

Richard Socher (MetaMind)
Eric H Huang (Stanford University)
Jeffrey Pennin (Stanford University)
Andrew Y Ng (Baidu Research)
Christopher D Manning (Stanford University)

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