Sequence to Sequence Learning with Neural Networks

Sutskever et al., 2014, Sequence to Sequence Learning with Neural Networks (Advances in Neural Information Processing Systems 27 (NIPS 2014))

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3.8 Model Analysis

  1. What did PCA projections of seq2seq sentence vectors show?
    Phrases cluster by meaning, which is sensitive to word order (“John admires Mary” vs “Mary admires John” land apart) but fairly invariant to active vs passive voice (“I gave her a card in the garden” near “In the garden, I gave her a card” and “She was given a card by me”), something a bag-of-words model couldn’t capture.

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