Multi-lingual opinion mining on YouTube     

《Information processing & management》2016,52(1):46-60

In order to successfully apply opinion mining (OM) to the large amounts of user-generated content produced every day, we need robust models that can handle the noisy input well yet can easily be adapted to a new domain or language. We here focus on opinion mining for YouTube by (i) modeling classifiers that predict the type of a comment and its polarity, while distinguishing whether the polarity is directed towards the product or video; (ii) proposing a robust shallow syntactic structure (STRUCT) that adapts well when tested across domains; and (iii) evaluating the effectiveness on the proposed structure on two languages, English and Italian. We rely on tree kernels to automatically extract and learn features with better generalization power than traditionally used bag-of-word models. Our extensive empirical evaluation shows that (i) STRUCT outperforms the bag-of-words model both within the same domain (up to 2.6% and 3% of absolute improvement for Italian and English, respectively); (ii) it is particularly useful when tested across domains (up to more than 4% absolute improvement for both languages), especially when little training data is available (up to 10% absolute improvement) and (iii) the proposed structure is also effective in a lower-resource language scenario, where only less accurate linguistic processing tools are available.  相似文献   

Query-focused multi-document summarization using hypergraph-based ranking     

《Information processing & management》2016,52(4):670-681

General graph random walk has been successfully applied in multi-document summarization, but it has some limitations to process documents by this way. In this paper, we propose a novel hypergraph based vertex-reinforced random walk framework for multi-document summarization. The framework first exploits the Hierarchical Dirichlet Process (HDP) topic model to learn a word-topic probability distribution in sentences. Then the hypergraph is used to capture both cluster relationship based on the word-topic probability distribution and pairwise similarity among sentences. Finally, a time-variant random walk algorithm for hypergraphs is developed to rank sentences which ensures sentence diversity by vertex-reinforcement in summaries. Experimental results on the public available dataset demonstrate the effectiveness of our framework.  相似文献   

技术标准联盟成员的谈判与联盟治理结构研究   总被引：5，自引：0，他引：5  

曾德明  朱丹  彭盾  孙耀吾 《中国软科学》2007,(3):16-21

技术标准联盟的契约理论与利益相关者理论具有一致性，他们都隐含了技术标准联盟是一种再谈判机制。联盟成员对技术标准的所有权分配进行谈判，谈判结果外化为技术标准联盟治理结构。在这个谈判过程中，各方的威胁点、谈判力和对谈判破裂的担心程度是关键变量，首先从契约理论出发，发现利益相关者理论更为真实地揭示出技术标准联盟的利益格局，然后利用Nash谈判模型及其推广模型来研究技术标准联盟成员之间的互动关系。通过分析国外成功的技术标准联盟的治理结构，发现这些技术标准联盟治理结构的设计都充分考虑了联盟成员的利益，并在此基础上提出技术标准联盟组建策略。  相似文献   

基于技术标准的企业协作研发伙伴选择研究     

曾德明  华金科  孙耀吾 《科学学与科学技术管理》2005,26(11):39-41,51

联盟伙伴的选择是联盟成功的关键，在分析基于技术标准的企业协作研发伙伴选择原则和指标体系基础上，采用层次分析法（AHP）来解决如何基于技术标准协作研发选择伙伴的问题。  相似文献   

Argumentation and graph properties     

《Information processing & management》2016,52(2):319-325

Argumentation theory is an area of interdisciplinary research that is suitable to characterise several diverse situations of reasoning and judgement in real world practices and challenges. In the discipline of Artificial Intelligence, argumentation is formalised by reasoning models based on building and evaluation of interacting arguments. In this argumentation framework, the semantics of acceptance plays a fundamental role in the argument evaluation process. The determination of accepted arguments under a given semantics (admissible, preferred, stable, etc.) can be a time-consuming and tedious (in number of steps) process. In this work we try to overcome this substantial process by providing a method to compute accepted arguments from an argumentation framework. The principle of this method is to combine mathematical properties (e.g. symmetry, asymmetry, strong connectivity and irreflexivity) of graphs built from the argumentation system to compute sets of accepted arguments. In this work, we combine several graph properties to provide three main propositions; one for identifying accepted arguments under the admissible, preferred semantics and the other to easily identify stable extension. The proofs of the suggested propositions are detailed and this is part of an approach designed to increase collaborative decision-making by improving the effectiveness of reasoning processes.  相似文献   

Cascading failures in local-world evolving networks     

Zhe-jing Bao  Yi-jia Cao 《浙江大学学报(A卷英文版)》2008,9(10):1336-1340

The local-world （LW） evolving network model shows a transition for the degree distribution between the exponential and power-law distributions, depending on the LW size. Cascading failures under intentional attacks in LW network models with different LW sizes were investigated using the cascading failures load model. We found that the LW size has a significant impact on the network＇s robustness against deliberate attacks. It is much easier to trigger cascading failures in LW evolving networks with a larger LW size. Therefore, to avoid cascading failures in real networks with local preferential attachment such as the Internet, the World Trade Web and the multi-agent system, the LW size should be as small as possible.  相似文献   

大学研究性教学的条件分析   总被引：2，自引：1，他引：1  

姚利民  史曼莉 《湖南第一师范学报》2008,8(4):1-4

大学实施研究性教学需要教师、学生、教学资源和教学管理四方面的条件。教师要更新观念和增强研究意识、转变角色,学生要增强自主求知和主动探究的意识、转变角色,教学资源包括灵活的规章制度、优化的校园环境、优越的校园外部支持条件、众多的人力支持,教学管理要实现科学化、有效化、人本化。  相似文献   

论政府在改革和完善社会保障制度中的作用     

许晓春  刘谷良 《湖南科技学院学报》2008,29(9)

社会保障作为国家的一项社会制度,政府是不可避免地要在其中发挥作用的。我国自1949年建立以来,就十分重视社会保障,尤其是改革开放以来,我国已建立了相一系列的社会保障制度。尽管如此,我国的社会保障制度还是存有问题。因为社会保障制度是维护社会安定,促进经济发展,关系到全体社会成员切身利益的一项基本的社会政策,因此在新形势下,我国政府必须进一步改革和完善我国的社会保障制度,而且政府有这个过程中的作用不应该减弱,反而应予以加强。  相似文献   

课堂教学中传统教具与信息化教具的适用度探讨   总被引：1，自引：0，他引：1  

黄生叶 《湖南科技学院学报》2008,29(3):190-192

文章分析了传统教具和现代信息化教具各自的优势,对专业课课堂教学中如何合理地使用信息化教具和传统教具、并将二者有机结合的问题进行探讨.  相似文献   

试论大学生思想政治教育及日常管理     

钟璨 《湖南科技学院学报》2008,29(11)

辅导员首要任务是坚持学习,用党的最先进理论武装自己,扎实做好学生思想工作;其次是加强学生心理健康、纪律观念教育,号召学生遵规守纪,刻苦学习,练好本领;最后是公平、公正、公开地做好学生各种评定工作,切实做好新生入学教育和毕业生就业工作。  相似文献