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Erschienen in:
Convolutional Bi-directional LSTM for Detecting Inappropriate Query Suggestions in Web Search Kapitel lesen Erstes Kapitel lesen

2017 | OriginalPaper | Buchkapitel

Distributed Representations for Words on Tables

verfasst von : Minoru Yoshida, Kazuyuki Matsumoto, Kenji Kita

Erschienen in: Advances in Knowledge Discovery and Data Mining

Verlag: Springer International Publishing

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Abstract

We consider a problem of word embedding for tables, and we obtain distributed representations for words found in tables. We propose a table word-embedding method, which considers both horizontal and vertical relations between cells to estimate appropriate word embedding for words in tables. We propose objective functions that make use of horizontal and vertical relations, both individually and jointly.

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Fußnoten
1
The total number of tables found in the corpus was 255,039.
 
2
In our data set, 266 (93.7%) out of 284 randomly sampled tables were row-wise.
 
3
In this research, we ignore tables that have no attribute names. Although this strategy can cause noise in the set of attribute vectors, the effects of such noise are small, because values are of many types and their frequency is relatively lower than that of the attributes.
 
4
The original paper of word2vec derived this objective by maximizing the probability of a word appearing in the given contexts, but here we ignore these derivations and consider only the following objectives as merely the score function for the purpose of obtaining word-embedding vectors.
 
5
In addition, note that only two of these four terms are used for each (w, z) pair, rendering the SGD implementation for this model nearly the same as that of word2vec.
 
6
Although two (the first and second) terms are used for the word w and its vertical context word c, we can differentiate each term independently because there are no vectors appearing both of the terms, thus we can use the iteration method similar to that of word2vec.
 
7
Note that as a result, the size of the similarity and analogy task queries was reduced to 445 and 5,124, respectively.
 
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Metadaten
Titel
Distributed Representations for Words on Tables
verfasst von
Minoru Yoshida
Kazuyuki Matsumoto
Kenji Kita
Copyright-Jahr
2017
Buch
Advances in Knowledge Discovery and Data Mining

Print ISBN: 978-3-319-57453-0

Electronic ISBN: 978-3-319-57454-7

Copyright-Jahr: 2017

DOI
https://doi.org/10.1007/978-3-319-57454-7_11