Web document summarization by exploiting social context with matrix co-factorization     

Minh-Tien Nguyen  Viet Cuong Tran  Xuan Hoai Nguyen  Le-Minh Nguyen 《Information processing & management》2019,56(3):495-515

In the context of social media, users usually post relevant information corresponding to the contents of events mentioned in a Web document. This information posses two important values in that (i) it reflects the content of an event and (ii) it shares hidden topics with sentences in the main document. In this paper, we present a novel model to capture the nature of relationships between document sentences and post information (comments or tweets) in sharing hidden topics for summarization of Web documents by utilizing relevant post information. Unlike previous methods which are usually based on hand-crafted features, our approach ranks document sentences and user posts based on their importance to the topics. The sentence-user-post relation is formulated in a share topic matrix, which presents their mutual reinforcement support. Our proposed matrix co-factorization algorithm computes the score of each document sentence and user post and extracts the top ranked document sentences and comments (or tweets) as a summary. We apply the model to the task of summarization on three datasets in two languages, English and Vietnamese, of social context summarization and also on DUC 2004 (a standard corpus of the traditional summarization task). According to the experimental results, our model significantly outperforms the basic matrix factorization and achieves competitive ROUGE-scores with state-of-the-art methods.  相似文献   

Topic discovery based on text mining techniques     

Aurora Pons-Porrata  Rafael Berlanga-Llavori  José Ruiz-Shulcloper 《Information processing & management》2007

In this paper, we present a topic discovery system aimed to reveal the implicit knowledge present in news streams. This knowledge is expressed as a hierarchy of topic/subtopics, where each topic contains the set of documents that are related to it and a summary extracted from these documents. Summaries so built are useful to browse and select topics of interest from the generated hierarchies. Our proposal consists of a new incremental hierarchical clustering algorithm, which combines both partitional and agglomerative approaches, taking the main benefits from them. Finally, a new summarization method based on Testor Theory has been proposed to build the topic summaries. Experimental results in the TDT2 collection demonstrate its usefulness and effectiveness not only as a topic detection system, but also as a classification and summarization tool.  相似文献   

目前学术界宅基地使用权继承问题观点综述     

徐致远 《潍坊教育学院学报》2008,21(1):38-40

目前我国法律对于宅基地使用权继承制度的规范存在严重缺位,在此情况下,学术界针对现实生活中在宅基地使用权继承问题上遇到的三种情况提出了不同的观点,并各自列举了其理由。本文将这些观点及各自列举的理由作了综述,以便于人们在此基础上作出进一步的研究,或参照这些观点和理由,通过立法为宅基地使用权的继承设置一套完整的调整制度。  相似文献   

谈洛惠渠五洞工程手掘式盾构法施工     

马伯恩  贾志胜 《杨凌职业技术学院学报》2005,4(4):31-33

根据洛惠渠五号隧洞施工中的复杂地质条件提出了盾构施工方案,采用这种比较先进的施工方法,完成工程施工,从而总结推广隧洞盾构施工技术。  相似文献   

面向查询的观点摘要模型研究:以Debatepedia为数据源     

余传明  郑智梁  朱星宇  安璐 《情报学报》2020,39(4):374-386

本文系统性地研究面向查询的观点摘要任务,旨在构建一种查询式观点摘要模型框架,探究不同的摘要方法对摘要效果的影响。通过综合考虑情感倾向与句子相似度,从待检文档中抽取出待摘要语句,再结合神经网络和词嵌入技术生成摘要,进而构建面向查询的观点摘要框架。从Debatepedia网站上爬取议题和论述内容构建观点摘要实验数据集,将本文方法应用到该数据集上,以检验不同模型的效果。实验结果表明,在该数据集上,仅使用基于抽取式的方法生成的观点摘要质量更高,取得了最高的平均ROUGE分数、深度语义相似度分数和情感分数,较生成式方法分别提高6.58%、1.79%和11.52%,而比组合式方法提高了8.33%、2.80%和13.86%;同时,本文提出的句子深度语义相似度和情感分数评估指标有助于更好地评估面向查询的观点摘要模型效果。研究结果对于提升面向查询的观点摘要效果,促进观点摘要模型在情报学领域的应用具有重要意义。  相似文献   

Abstractive headline generation using WIDL-expressions     

R. Soricut  D. Marcu 《Information processing & management》2007,43(6):1536

We present a new paradigm for the automatic creation of document headlines that is based on direct transformation of relevant textual information into well-formed textual output. Starting from an input document, we automatically create compact representations of weighted finite sets of strings, called WIDL-expressions, which encode the most important topics in the document. A generic natural language generation engine performs the headline generation task, driven by both statistical knowledge encapsulated in WIDL-expressions (representing topic biases induced by the input document) and statistical knowledge encapsulated in language models (representing biases induced by the target language). Our evaluation shows similar performance in quality with a state-of-the-art, extractive approach to headline generation, and significant improvements in quality over previously proposed solutions to abstractive headline generation.  相似文献   

刘熙载《艺概》研究史综述     

束舒娅  徐倩 《江西教育学院学报》2011,32(2):150-156

刘熙载《艺概》研究史以时间维度为经,大致可分为五个时期;而以学界研究的不同视角为纬,又可见出各时期研究的侧重点、主导价值观和成就所在。《艺概》研究史主要成就在上世纪80年代以后20年。综合《艺概》研究不同时期的特点,不仅为《艺概》研究的进一步深入提供历史借鉴,也将引导接下来的刘熙载《艺概》研究。  相似文献   

青少年网络成瘾现象研究综述     

鲁正宏 《鸡西大学学报》2011,11(4):47-48

从青少年网络成瘾的界定、测量评估标准、相关风险因素研究、治疗和干预手段等方面进行综述,意对网络成瘾现象的相关研究提供参考。  相似文献   

近年来学界关于马克思平等观研究述评     

郑波辉 《信阳师范学院学报(哲学社会科学版)》2015,(1):31-35

马克思作为科学社会主义的创始人,其平等观是社会主义平等问题研究的首要参考。马克思所追求的平等是经济与社会领域实质意义上的平等,其平等观的构建受到西方近代资产阶级平等思想的启发,并实现对后者的批判性超越。以马克思平等观为指导的社会主义平等观与自由主义平等观相比,二者在认识平等问题的方法论、对平等与自由的价值排序以及对待"人生而不同"这一基本事实的态度等问题上均存在差异。当代社会主义市场经济实践是补足马克思平等理想实现条件的现实选择。  相似文献   

地方文献学学科建设研究综述   总被引：1，自引：0，他引：1  

王晓兵 《现代情报》2010,30(2):170-172,177

就学者们对地方文献学有关基础理论的研究、地方文献学的学科性质、研究内容、研究方法、研究体系以及与相关学科的关系等方面的理论文章进行归纳总结,分析和揭示地方文献学的理论研究现状和进展动态,以期促进和推动地方文献学的学科建设,使这一学科逐渐成熟。  相似文献