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1.
针对当前自动文摘方法的不足,提出了基于文本聚类的自动文摘实现方法.可以克服常规自动文摘方法的不足,使文摘的质量和效果得到大大的提高.将文本聚类引入自动文摘中,不但使单文档的文摘质量得到提高,而且能够实现多文档的自动文摘,这是现有的自动文摘技术所没有涉及的.实现了面向"塑料"行业的基于文本聚类的自动文摘系统TCAAS.实验表明该方法可行, 对自动文摘系统的设计具有借鉴意义和深入研究的价值.  相似文献   

2.
文本聚类在自动文摘中的应用研究   总被引:1,自引:0,他引:1  
针对当前自动文摘方法的不足,提出了基于文本聚类的自动文摘实现方法。将文本聚类引入自动文摘中,能实现多文档的自动文摘。实现了面向“塑料”行业的基于文本聚类的自动文摘系统TCAAS,其单文档自动文摘的正确率和召回率在80%以上,多文档自动文摘的正确率和召回率在75%以上。实验表明该方法可行,对自动文摘系统的设计具有借鉴意义和深入研究的价值。  相似文献   

3.
文本自动综述系统的研究与实现   总被引:6,自引:0,他引:6  
文本自动综述是自动文摘在多文档上的推广.提出了一种基于统计的文本自动综述方法,并描述了它的实现过程.该方法利用文档内和文档之间段落的语义相关性,实现多文档的自动综述.首先对文本进行分段实现信息分割;再对文本段进行聚类实现信息凝聚;最后抽取代表段产生综述结果实现信息压缩.实验结果表明,该方法是有效的,具有一定的实用价值.  相似文献   

4.
基于局部话题句群的事件相关多文档摘要研究   总被引:1,自引:0,他引:1  
多文档自动文摘研究的目的是给用户提供简洁全面的文档信息并提高用户获取信息的效率。在进行局部话题确定时,通常是利用聚类分析的方法把相似的文本单元聚成一个局部话题。该文提出了一种针对新闻事件的多文档摘要生成方法,其特色在于:在提取基本新闻要素和扩展新闻要素的基础上分别形成了基本局部话题句群(BPTSG)和扩展局部话题句群(EPTSG),这样可以在尽可能全面地覆盖多个话题的同时缩减自身的冗余。此外,文中还提出了一种基于事件时间和句子位置信息的文摘句排序方法。实验结果验证了该文所提的方法是有效的,与基于聚类的自动文摘系统相比较,该系统生成的摘要质量有显著提高。  相似文献   

5.
基于潜在语义索引和句子聚类的中文自动文摘   总被引:2,自引:0,他引:2  
自动文摘是自然语言处理领域的一项重要的研究课题.提出一种基于潜在语义索引和句子聚类的中文自动文摘方法.该方法的特色在于:使用潜在语义索引计算句子的相似度,并将层次聚类算法和K-中心聚类算法相结合进行句子聚类,这样提高了句子相似度计算和主题划分的准确性,有利于生成的文摘在全面覆盖文档主题的同时减少自身的冗余.实验结果验证了该文提出的方法的有效性,对比传统的基于聚类的自动文摘方法,该方法生成的文摘质量获得了显著的提高.  相似文献   

6.
目前的动态文摘方法几乎都是基于文档批处理机制的,无法适应实际应用中文档数据是以不稳定的数据流形式到来,需要实时更新摘要的需求。针对上述问题,提出一种利用K近邻思想对句子进行建模,再增量聚类句子实现子主题划分的动态文本摘要方法。该方法根据K近邻基本思想形成两层句子图模型,用增量图聚类方法对句子进行处理,同时考虑结合时间因素提高句子新颖度来抽取动态文摘。该方法能基于文档数据流增量式地抽取动态文摘,实现文摘内容的实时更新。通过在TAC2008和TAC2009的Update Summarization数据集上的测试,证明本文方法在动态文摘抽取上的有效性。  相似文献   

7.
自动文摘是指利用计算机自动对文本编制摘要,是自然语言理解的重要应用领域之一。限于相关领域的已有水平,现阶段的自动文摘系统多数是以词语频率作为依据,以词频高的词语作为文章的关键词语,得到的文摘往往与原文中心思想相差甚远,因此,需要对文章的语法、语义和语境进行分析。本文利用HowNet得到词语概念的方法,建立基于概念的自动文摘系统。  相似文献   

8.
基于实体名的文本自动综述研究   总被引:1,自引:0,他引:1  
自动文摘是自然语言处理的一个重要分支,在信息检索领域中有着重要的用途.文本自动综述是自动文摘在多文档上的推广。本文提出了基于实体名扩展的自动综述方法,这种方法认为综述中的实体名个数反映其中所蕴含信,S量的多少。我们用该方法实现针对事件的自动综述生成,并参加了2003年文本理解会议(Document Understanding Conference,DUC)进行统一评测,DUC反馈的评测结果显示这种方法是有效的。此外,本文还对文本理解会议的任务、评测方法和测试结果做了简单介绍。  相似文献   

9.
孙桂煌 《现代计算机》2011,(16):9-11,16
由于文本自身特点使得传统的文档表示模型VSM不能很好地反映文本信息,也让传统数据挖掘聚类算法得不到很好的性能表现。针对传统文本聚类方法中文本表示模型VSM和聚类算法的不足,提出一种基于n-gram短语的文本聚类方法,该方法利用n-gram短语构建短语文档相关模型,将其转换成相关文档模型,在相关文档模型基础上进行文档聚类。实验结果显示,此方法是一种能获得较好聚类结果的有效方法。摘要:  相似文献   

10.
由于文本自身特点使得传统的文档表示模型VSM不能很好地反映文本信息.也让传统数据挖掘聚类算法得不到很好的性能表现。针对传统文本聚类方法中文本表示模型VSM和聚类算法的不足,提出一种基于n—gram短语的文本聚类方法,该方法利用n-gram短语构建短语文档相关模型,将其转换成相关文档模型,在相关文档模型基础上进行文档聚类。实验结果显示,此方法是一种能获得较好聚类结果的有效方法。  相似文献   

11.
Abstract This paper describes an approach to the design of interactive multimedia materials being developed in a European Community project. The developmental process is seen as a dialogue between technologists and teachers. This dialogue is often problematic because of the differences in training, experience and culture between them. Conditions needed for fruitful dialogue are described and the generic model for learning design used in the project is explained.  相似文献   

12.
European Community policy and the market   总被引:1,自引:0,他引:1  
Abstract This paper starts with some reflections on the policy considerations and priorities which are shaping European Commission (EC) research programmes. Then it attempts to position the current projects which seek to capitalise on information and communications technologies for learning in relation to these priorities and the apparent realities of the marketplace. It concludes that while there are grounds to be optimistic about the contribution EC programmes can make to the efficiency and standard of education and training, they are still too technology driven.  相似文献   

13.
融合集成方法已经广泛应用在模式识别领域,然而一些基分类器实时性能稳定性较差,导致多分类器融合性能差,针对上述问题本文提出了一种新的基于多分类器的子融合集成分类器系统。该方法考虑在度量层融合层次之上通过对各类基多分类器进行动态选择,票数最多的类别作为融合系统中对特征向量识别的类别,构成一种新的自适应子融合集成分类器方法。实验表明,该方法比传统的分类器以及分类融合方法识别准确率明显更高,具有更好的鲁棒性。  相似文献   

14.
Development of software intensive systems (systems) in practice involves a series of self-contained phases for the lifecycle of a system. Semantic and temporal gaps, which occur among phases and among developer disciplines within and across phases, hinder the ongoing development of a system because of the interdependencies among phases and among disciplines. Such gaps are magnified among systems that are developed at different times by different development teams, which may limit reuse of artifacts of systems development and interoperability among the systems. This article discusses such gaps and a systems development process for avoiding them.  相似文献   

15.
This paper presents control charts models and the necessary simulation software for the location of economic values of the control parameters. The simulation program is written in FORTRAN, requires only 10K of main storage, and can run on most mini and micro computers. Two models are presented - one describes the process when it is operating at full capacity and the other when the process is operating under capacity. The models allow the product quality to deteriorate to a further level before an existing out-of-control state is detected, and they can also be used in situations where no prior knowledge exists of the out-of-control causes and the resulting proportion defectives.  相似文献   

16.
Going through a few examples of robot artists who are recognized worldwide, we try to analyze the deepest meaning of what is called “robot art” and the related art field definition. We also try to highlight its well-marked borders, such as kinetic sculptures, kinetic art, cyber art, and cyberpunk. A brief excursion into the importance of the context, the message, and its semiotics is also provided, case by case, together with a few hints on the history of this discipline in the light of an artistic perspective. Therefore, the aim of this article is to try to summarize the main characteristics that might classify robot art as a unique and innovative discipline, and to track down some of the principles by which a robotic artifact can or cannot be considered an art piece in terms of social, cultural, and strictly artistic interest. This work was presented in part at the 13th International Symposium on Artificial Life and Robotics, Oita, Japan, January 31–February 2, 2008  相似文献   

17.
为了设计一种具有低成本、低功耗、易操作、功能强且可靠性高的煤矿井下安全分站,针对煤矿安全生产实际,文章提出了采用MCS-51系列单片机为核心、具有CAN总线通信接口的煤矿井下安全监控分站的设计方案;首先给出煤矿井下安全监控分站的整体构架设计,然后着重阐述模拟量输入信号处理系统的设计过程,最后说明单片机最小系统及其键盘、显示、报警、通信等各个组成部分的设计;为验证设计方案的可行性与有效性,使用Proteus软件对设计内容进行仿真验证,设计的煤矿井下安全监控分站具有瓦斯、温度等模拟量参数超标报警功能和电机开停、风门开闭等开关量指示功能;仿真结果表明:设计的煤矿井下安全监控分站具有一定的实际应用价值.  相似文献   

18.
Although there are many arguments that logic is an appropriate tool for artificial intelligence, there has been a perceived problem with the monotonicity of classical logic. This paper elaborates on the idea that reasoning should be viewed as theory formation where logic tells us the consequences of our assumptions. The two activities of predicting what is expected to be true and explaining observations are considered in a simple theory formation framework. Properties of each activity are discussed, along with a number of proposals as to what should be predicted or accepted as reasonable explanations. An architecture is proposed to combine explanation and prediction into one coherent framework. Algorithms used to implement the system as well as examples from a running implementation are given.  相似文献   

19.
《计算机科学》2007,34(4):148-148
Recent years have seen rapid advances in various grid-related technologies, middleware, and applications. The GCC conference has become one of the largest scientific events worldwide in grid and cooperative computing. The 6th international conference on grid and cooperative computing (GCC2007) Sponsored by China Computer Federation (CCF),Institute of Computing Technology, Chinese Academy of Sciences (ICT) and Xinjiang University ,and in Cooperation with IEEE Computer Soceity ,is to be held from August 16 to 18, 2007 in Urumchi, Xinjiang, China.  相似文献   

20.
正The 34th Chinese Control Conference and SICE Annual Conference 2015(CCCSICE2015)is organized by the Technical Committee on Control Theory(TCCT)of Chinese Association of Automation(CAA)and the Society of Instrument and Control Engineers(SICE)of Japan,and locally organized by Hangzhou Dianzi University(HDU).  相似文献   

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