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Functional Distributional Semantics

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If you have a question about this talk, please contact Anita VerΕ‘ .

Vector space models have become popular in computational linguistics, despite the challenges they face when it comes to compositionality, inference, context-dependence, and other issues of interest to semanticists. I will present a probabilistic framework which draws on both formal semantics and recent advances in machine learning. In particular, we can separate predicates from the entities they refer to, and represent predicates not by vectors, but by functions. From a formal semantic point of view, these can be seen as truth-conditional functions, and from a machine learning point of view, these can be seen as classifiers. By defining a probabilistic graphical model incorporating such functions, we can recast many semantic phenomena in terms of Bayesian inference. After describing the framework, and its implementation with neural networks, I will present recent results showing that such model can learn information not captured by vector space models.

This talk is part of the NLIP Seminar Series series.

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