Li Lucy


2019

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Using Sentiment Induction to Understand Variation in Gendered Online Communities
Li Lucy | Julia Mendelsohn
Proceedings of the Society for Computation in Linguistics (SCiL) 2019

2017

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Are Distributional Representations Ready for the Real World? Evaluating Word Vectors for Grounded Perceptual Meaning
Li Lucy | Jon Gauthier
Proceedings of the First Workshop on Language Grounding for Robotics

Distributional word representation methods exploit word co-occurrences to build compact vector encodings of words. While these representations enjoy widespread use in modern natural language processing, it is unclear whether they accurately encode all necessary facets of conceptual meaning. In this paper, we evaluate how well these representations can predict perceptual and conceptual features of concrete concepts, drawing on two semantic norm datasets sourced from human participants. We find that several standard word representations fail to encode many salient perceptual features of concepts, and show that these deficits correlate with word-word similarity prediction errors. Our analyses provide motivation for grounded and embodied language learning approaches, which may help to remedy these deficits.