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arXiv 1802.05883cs.CLcs.AI
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用于联合对齐和单词表示的深度生成模型

Deep Generative Model for Joint Alignment and Word Representation

Institute for Logic, Language, and Computation(逻辑、语言与计算研究所);University of Amsterdam(阿姆斯特丹大学)

Miguel Rios, Wilker Aziz, Khalil Sima'an

摘要:

这项工作利用翻译数据作为源的语义相关的学习信号模型的单词表示。特别是,我们通过翻译作为分布式上下文的一种形式来利用等价性,并共同学习如何嵌入并与深度生成模型保持一致。我们的EmbedAlign模型将单词嵌入到完整的观察上下文中,并通过潜在词汇对齐的边缘化来学习。此外,它将单词嵌入后验概率密度,而不是点估计,这允许我们使用分布之间的重叠度量(例如KL发散)来比较上下文中的单词。我们调查我们的模型的性能上的一系列词汇语义任务,实现竞争力的结果,包括自然语言推理,释义和文本相似性的几个标准的基准。

英文摘要:

This work exploits translation data as a source of semantically relevant learning signal for models of word representation. In particular, we exploit equivalence through translation as a form of distributed context and jointly learn how to embed and align with a deep generative model. Our EmbedAlign model embeds words in their complete observed context and learns by marginalisation of latent lexical alignments. Besides, it embeds words as posterior probability densities, rather than point estimates, which allows us to compare words in context using a measure of overlap between distributions (e.g. KL divergence). We investigate our model's performance on a range of lexical semantics tasks achieving competitive results on several standard benchmarks including natural language inference, paraphrasing, and text similarity.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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