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- W2963462013 abstract "A surprising property of word vectors is that word analogies can often be solved with vector arithmetic. However, it is unclear why arithmetic operators correspond to non-linear embedding models such as skip-gram with negative sampling (SGNS). We provide a formal explanation of this phenomenon without making the strong assumptions that past theories have made about the vector space and word distribution. Our theory has several implications. Past work has conjectured that linear substructures exist in vector spaces because relations can be represented as ratios; we prove that this holds for SGNS. We provide novel justification for the addition of SGNS word vectors by showing that it automatically down-weights the more frequent word, as weighting schemes do ad hoc. Lastly, we offer an information theoretic interpretation of Euclidean distance in vector spaces, justifying its use in capturing word dissimilarity." @default.
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- W2963462013 date "2019-01-01" @default.
- W2963462013 modified "2023-10-18" @default.
- W2963462013 title "Towards Understanding Linear Word Analogies" @default.
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- W2963462013 doi "https://doi.org/10.18653/v1/p19-1315" @default.
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