arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2005.08105cs.CL
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从释义中学习概率句表征

Learning Probabilistic Sentence Representations from Paraphrases

Toyota Technological Institute at Chicago(芝加哥丰田技术研究院)

Mingda Chen, Kevin Gimpel

摘要:

概率词嵌入在捕捉概括性和蕴涵概念方面表现出了有效性,但对句子进行类似类型的研究的工作很少。在本文中,我们定义概率模型,产生分布的句子。我们表现最好的模型将每个单词视为应用于多元高斯分布的线性变换算子。我们训练我们的模型的释义,并证明他们自然捕捉句子的特异性。虽然我们提出的模型总体上实现了最佳性能,但我们还表明,通过句子向量的范数,特异性由更简单的架构表示。定性分析表明,我们的概率模型捕捉到了语义蕴涵,并提供了分析单个词的特异性和精确性的方法。

英文摘要:

Probabilistic word embeddings have shown effectiveness in capturing notions of generality and entailment, but there is very little work on doing the analogous type of investigation for sentences. In this paper we define probabilistic models that produce distributions for sentences. Our best-performing model treats each word as a linear transformation operator applied to a multivariate Gaussian distribution. We train our models on paraphrases and demonstrate that they naturally capture sentence specificity. While our proposed model achieves the best performance overall, we also show that specificity is represented by simpler architectures via the norm of the sentence vectors. Qualitative analysis shows that our probabilistic model captures sentential entailment and provides ways to analyze the specificity and preciseness of individual words.

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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