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arXiv 1609.07033cs.CL
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从会议记录生成抽象摘要

Generating Abstractive Summaries from Meeting Transcripts

The Pennsylvania State University(宾夕法尼亚州立大学);Qatar Computing Research Institute(卡塔尔计算研究所);Hamad Bin Khalifa University(哈马德·本·哈利法大学);National University of Singapore(新加坡国立大学)

Siddhartha Banerjee, Prasenjit Mitra, Kazunari Sugiyama

摘要:

会议摘要非常重要,因为它们以简洁的形式传达了讨论的基本内容。一般来说,阅读和理解整个文件是很耗时的。因此,摘要起着重要的作用,因为读者只对讨论的重要背景感兴趣。在这项工作中,我们解决了会议文件摘要的任务。迄今为止开发的会议对话自动摘要系统主要是提取的,导致难以阅读的不可接受的摘要。所提取的话语包含影响提取摘要的质量的不流利。为了使摘要更具可读性,我们提出了一种方法来生成抽象的摘要融合重要内容从几个话语。我们首先将会议记录分成不同的主题片段,然后使用监督学习方法识别每个片段中的重要话语。然后将重要的话语组合在一起以生成一句话的摘要。在文本生成步骤中,每个片段中的话语的依赖性解析被组合在一起以创建有向图。通过整数线性规划(ILP)获得的信息量最大且结构良好的子图被选择用于为每个主题段生成一句话的摘要。ILP公式化通过利用在非会话风格的文本中更突出的语法关系来减少不流利,并且因此生成与人类书写的抽象摘要相当的摘要。实验结果表明,我们的方法可以产生更多的信息摘要比基线。此外,由人类法官的可读性评估以及从依赖解析器获得的对数似然估计表明,我们生成的摘要是显着可读和良好的形式。

英文摘要:

Summaries of meetings are very important as they convey the essential content of discussions in a concise form. Generally, it is time consuming to read and understand the whole documents. Therefore, summaries play an important role as the readers are interested in only the important context of discussions. In this work, we address the task of meeting document summarization. Automatic summarization systems on meeting conversations developed so far have been primarily extractive, resulting in unacceptable summaries that are hard to read. The extracted utterances contain disfluencies that affect the quality of the extractive summaries. To make summaries much more readable, we propose an approach to generating abstractive summaries by fusing important content from several utterances. We first separate meeting transcripts into various topic segments, and then identify the important utterances in each segment using a supervised learning approach. The important utterances are then combined together to generate a one-sentence summary. In the text generation step, the dependency parses of the utterances in each segment are combined together to create a directed graph. The most informative and well-formed sub-graph obtained by integer linear programming (ILP) is selected to generate a one-sentence summary for each topic segment. The ILP formulation reduces disfluencies by leveraging grammatical relations that are more prominent in non-conversational style of text, and therefore generates summaries that is comparable to human-written abstractive summaries. Experimental results show that our method can generate more informative summaries than the baselines. In addition, readability assessments by human judges as well as log-likelihood estimates obtained from the dependency parser show that our generated summaries are significantly readable and well-formed.

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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