[PDF][PDF] An exploration of discourse-based sentence spaces for compositional distributional semantics

T Polajnar, L Rimell, S Clark - … of the First Workshop on Linking …, 2015 - aclanthology.org
Proceedings of the First Workshop on Linking Computational Models of …, 2015aclanthology.org
This paper investigates whether the wider context in which a sentence is located can
contribute to a distributional representation of sentence meaning. We compare a vector
space for sentences in which the features are words occurring within the sentence, with two
new vector spaces that only make use of surrounding context. Experiments on simple
subject-verbobject similarity tasks show that all sentence spaces produce results that are
comparable with previous work. However, qualitative analysis and user experiments …
Abstract
This paper investigates whether the wider context in which a sentence is located can contribute to a distributional representation of sentence meaning. We compare a vector space for sentences in which the features are words occurring within the sentence, with two new vector spaces that only make use of surrounding context. Experiments on simple subject-verbobject similarity tasks show that all sentence spaces produce results that are comparable with previous work. However, qualitative analysis and user experiments indicate that extra-sentential contexts capture more diverse, yet topically coherent information.
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