共查询到19条相似文献，搜索用时 296 毫秒
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客户需求权重的确定是质量功能展开中最关键、最核心的阶段。针对客户需求评价者可能作出的不同语言评价集,提出一种基于标准化区间二元语义的多属性评价方法。定义区间二元语义、集结算子和可能度排序方法,介绍基于区间二元语义模型的模糊多属性信息评价算法,并通过实例验证该方法的可行性。 相似文献
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基于网络出版的电子期刊的客观评价研究 总被引：1，自引：0，他引：1
针对基于网络出版的电子期刊的质量问题展开了多属性评价研究。考虑了基于网络出版的电子期刊所呈现的新的属性特征。提出了基于熵权的客观评价方法。该方法基于熵的概念,根据决策矩阵确定属性的权重值,进而计算出各期刊的综合评价值以得到它们的排序。最后采用一个算例说明提出的方法。 相似文献
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基于二元语义的农业信息化水平评价研究 总被引：8，自引：0，他引：8
分析了国内外信息化评价指标体系及评价方法的研究现状,在相关文献的基础上,建立了我国农业信息化评价指标体系,建立了直接语言评价的基于二元语义及其相关算子的农业信息化评价模型,本模型不仅可以实现不同地区信息化水平的排序,还可以通过评价指标集实现各地区农业信息化的定性评价.通过应用案例表明了建立农业信息化评价体系的有效性以及评价方法的简单易用性. 相似文献
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以某学院2005级物理教育专业三位学生的毕业论文为评价对象,采用基于二元语义的语言评价信息处理方法研究了师范院校毕业论文评价情况,并对师范院校毕业论文的评价工作提出了一些建议。 相似文献
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提出待集结值包含实数与语言变量两种形式的具有优先权的混合加权平均Einstein(PHWAE)算子和具有优先权的二元语义混合加权平均Einstein(PTTLHWAE)算子,并据此建立混合多属性决策方法。 相似文献
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提出一种基于二元语义的图书馆服务质量评价方法,并通过实证分析表明该方法在图书馆服务质量评价中具有实际意义。 相似文献
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介绍一个航班预定口语对话系统的设计与实现,该系统允许用户通过普通话进行航班信息查询与预定.重点介绍口语对话系统中的口语语言理解.为了克服语音识别引入的识别错误导致语义理解错误的问题,提出基于词混淆网络的两阶段中文口语语言理解方法:首先从词混淆网络中选择N元文法作为分类特征,进行主题分类,并通过语义分类模型解析获取对应的语义树结构;然后利用基于规则的语义槽填充器抽取相应的语义槽属性-值.该方法是数据驱动的,训练数据的标记比较容易.实验在汉语航班预定领域进行,结果表明,在语音识别字错误率很高的情况下,该方法比传统的基于语法规则的语言理解方法更加鲁棒,在语义理解正确率方面有明显改善. 相似文献
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The proposed work aims to explore and compare the potency of syntactic-semantic based linguistic structures in plagiarism detection using natural language processing techniques. The current work explores linguistic features, viz., part of speech tags, chunks and semantic roles in detecting plagiarized fragments and utilizes a combined syntactic-semantic similarity metric, which extracts the semantic concepts from WordNet lexical database. The linguistic information is utilized for effective pre-processing and for availing semantically relevant comparisons. Another major contribution is the analysis of the proposed approach on plagiarism cases of various complexity levels. The impact of plagiarism types and complexity levels, upon the features extracted is analyzed and discussed. Further, unlike the existing systems, which were evaluated on some limited data sets, the proposed approach is evaluated on a larger scale using the plagiarism corpus provided by PAN1 competition from 2009 to 2014. The approach presented considerable improvement in comparison with the top-ranked systems of the respective years. The evaluation and analysis with various cases of plagiarism also reflected the supremacy of deeper linguistic features for identifying manually plagiarized data. 相似文献
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雍文明 《中国科技期刊研究》2022,33(7):852-14
【目的】 分析国际一流科技期刊办刊模式,为我国建设国际一流期刊提供建议。【方法】 以《自然》为例,通过查阅文献和相关网站,分析国际一流期刊的商业化运营模式,以及服务和支持研究人员、科研机构等利益相关者的策略。【结果】 《自然》实行2种运营策略:产品线延伸——衍生多种家族期刊,构建稿件转移机制,扩大期刊覆盖范围;品牌拓展——创建学术评价指标,拓展衍生期刊内容,提供特色广告服务,创建国家或区域特色数字期刊,以及开展培训服务和奖项评选。【结论】 在我国建设国际一流期刊道路上,可以参考《自然》的运营模式,借鉴共性经验,在办刊模式、办刊理念、稿件处理、机构设置等方面学习世界一流期刊的做法。 相似文献
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Keiko Kurata Mamiko Matsubayashi Shinji Mine Tomohide Muranushi Shuichi Ueda 《Information processing & management》2007
In recent years, electronic journals are in common use in scholarly communication and we can interpret this situation in various ways. On the one hand, we can say that scholarly communication is now much dependent on electronic resources. On the other hand, it would be too simplistic to say that scholarly communication is now greatly dependent on electronic resources because researchers seldom use other electronic resources. The purpose of this article is to show the position of electronic journals in scholarly communication based on Japanese researchers’ information behavior and estimation. The main focus is on distinguishing the function of scholarly journal and the electronic form. A questionnaire was sent to 1427 physicists, 1026 chemists and 1276 pathologists in universities and other research institutes all over Japan, of whom 775 (54.3%), 494 (48.1%) and 541 (42.4%), respectively, supplied answers. The main results are as follows. Japanese researchers in STM fields use electronic journals as a matter of course, and other electronic resources to some extent, for accessing information; but this shift to electronic resources seemed to be not a transformation but a modification of traditional patterns of use. Researchers still rely on traditional scholarly journals for accessing information and publication, although their recognition has begun to change. 相似文献
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集成FAHP/FCE的中国PPP项目风险评价 总被引：1，自引：0，他引：1
在建立指标体系基础上,提出一种集成FAHP/FCE的中国PPP项目风险评价的方法.构建了集成FAHP/FCE的风险评价模型,给出了具体评价过程和步骤.该方法允许决策者(专家)使用语言变量评估PPP项目风险因素,借助三角模糊数并有效集结专家偏好信息确定指标排序向量.通过算例验证该模型,表明了该方法的灵活性、可行性和有效性. 相似文献
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This study addresses the question of whether the way in which sets of query terms are identified has an impact on the effectiveness of users’ information seeking efforts. Query terms are text strings used as input to an information access system; they are products of a method or grammar that identifies a set of query terms. We conducted an experiment that compared the effectiveness of sets of query terms identified for a single book by three different methods. One had been previously prepared by a human indexer for a back-of-the-book index. The other two were identified by computer programs that used a combination of linguistic and statistical criteria to extract terms from full text. Effectiveness was measured by (1) whether selected query terms led participants to correct answers and (2) how long it took participants to obtain correct answers. Our results show that two sets of terms – the human terms and the set selected according to the linguistically more sophisticated criteria – were significantly more effective than the third set of terms. This single case demonstrates that query languages do have a measurable impact on the effectiveness of query term languages in the interactive information access process. The procedure described in this paper can be used to assess the effectiveness for information seekers of query terms identified by any query language. 相似文献
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【目的/意义】开放科学时代,融合Altmetrics指标进行中国英文学术期刊话语引导力特征分析与评价,有助
于丰富和完善中国特色学术期刊评价理论与指标体系。【方法/过程】首先从宏观层面对评价指标进行了描述性统
计分析和分布规律的探究;从中观层面对不同学科评价指标分布特征进行了揭示;从微观层面对不同国际合作情
况下评价指标的分布特征进行了解析。其次,根据评价指标特征及内涵,构建了评价指标体系。最后,采用相关分
析、集成因子分析与熵权法和TOPSIS法优势,融合Altmetrics指标对中国英文学术期刊话语引导力进行了评价分
析,并验证了评价结果的可靠性。【结果/结论】得到融合Altmetrics指标的话语引导力6个方面的特征。集成多种方
法优势,融合Altmetrics指标评价处于多元化学术生态系统中的学术期刊话语引导力是可行且必要的,评价结果是
可信的。【创新/局限】后续研究中,将扩大数据源,从更多维度来分析和评价学术期刊话语引导力,尝试提出中国学
术期刊话语权的建构路径。 相似文献
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基于印刷版与电子版的学术期刊综合评价研究 总被引：13，自引：0，他引：13
学术期刊评价问题受到了理论界和相关人士的普遍关注。现有大多数文献是对印刷版期刊或期刊数据库分别进行评价。本文阐述了对学术期刊进行基于印刷版与电子版评价的原因 ,提出了一个学术期刊综合评价的框架体系 ,并介绍了印刷版期刊、期刊网址和期刊数据库的评价指标 相似文献
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《Information processing & management》2002,38(1):1-36
This paper describes an automatic approach designed to improve the retrieval effectiveness of very short queries such as those used in web searching. The method is based on the observation that stemming, which is designed to maximize recall, often results in depressed precision. Our approach is based on pseudo-feedback and attempts to increase the number of relevant documents in the pseudo-relevant set by reranking those documents based on the presence of unstemmed query terms in the document text. The original experiments underlying this work were carried out using Smart 11.0 and the lnc.ltc weighting scheme on three sets of documents from the TREC collection with corresponding TREC (title only) topics as queries. (The average length of these queries after stoplisting ranges from 2.4 to 4.5 terms.) Results, evaluated in terms of P@20 and non-interpolated average precision, showed clearly that pseudo-feedback (PF) based on this approach was effective in increasing the number of relevant documents in the top ranks. Subsequent experiments, performed on the same data sets using Smart 13.0 and the improved Lnu.ltu weighting scheme, indicate that these results hold up even over the much higher baseline provided by the new weights. Query drift analysis presents a more detailed picture of the improvements produced by this process. 相似文献