Improving aspect extraction by augmenting a frequency-based method with web-based similarity measures     

Shi Li  Lina Zhou  Yijun Li 《Information processing & management》2015

Online review mining has been used to help manufacturers and service providers improve their products and services, and to provide valuable support for consumer decision making. Product aspect extraction is fundamental to online review mining. This research is aimed to improve the performance of aspect extraction from online consumer reviews. To this end, we augment a frequency-based extraction method with PMI-IR, which utilizes web search in measuring the semantic similarity between aspect candidates and target entities. In addition, we extend RCut, an algorithm originally developed for text classification, to learn the threshold for selecting candidate aspects. Experiment results with Chinese online reviews show that our proposed method not only outperforms the state of the art frequency-based method for aspect extraction but also generalizes across different product domains and various data sizes.  相似文献   

5种煤炭类核心期刊1994—2013年高被引论文分析     

尚利娜  牛晓勇  刘笑达  刘改换 《情报探索》2015,(1):49-52

以中国引文数据库和中国期刊全文数据库为统计源,从文献引证的角度对5种煤炭类核心期刊1994-2013年高被引(被引频次≥50)论文的被引频次、年度分布、作者和机构分布、基金项目及关键词频次进行统计分析,揭示煤炭科学的研究趋势和研究热点。  相似文献   

基于计划行为理论的高职学生图书馆使用行为实证研究*--以广州城市职业学院为例     

周莉娜 《情报探索》2015,(2):13-17

基于计划行为理论提出了高职学生读者使用图书馆行为的影响因素模型。结合对广州城市职业学院学生问卷调查数据,利用单因素方差分析法研究不同院系、年纪和性别在该模型各变量上的差异性;利用回归分析法对模型进行假设检验,发现感知有用性和兼容性显著影响使用态度,使用态度和主观规范影响使用行为意向,而使用行为意向又决定了实际使用行为。最后,提出相应建议。  相似文献   

Effect of Tara (Caesalpinia spinosa) Pod Powder on the Oxidation and Colour Stability of Pork Meat Batter During Chilled Storage     

Monika Skowyra  Urszula Janiewicz  Anna Marietta Salejda  Gra?yna Krasnowska  María Pilar Almajano 《Food Technology and Biotechnology》2015,53(4):419-427

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和谐社会视野下的常识教育探析     

刘丽娜  李化树 《鸡西大学学报》2011,(12):24-25

社会生活中的一些偶发事件,暴露出我国公民缺乏基本常识及科学判断能力,给和谐社会建设带来诸多困扰。因此,对常识教育存在的问题进行分析并提出相应对策,可以有效减少各种社会矛盾,促进我国社会主义和谐社会的建设。  相似文献   

预算法律制度存在的问题与对策探析——基于公共财政视角     

刘桉呐 《山西广播电视大学学报》2015,(2):61-64

《预算法》作为一国财政领域最为核心的法律,为现代财政制度构建了一个基础性的制度框架。文章以公共财政理论作为我国预算法律制度之基石,以公共预算作为我国预算法律制度发展之目标,着眼于公共财政视野下的预算法,指出预算法对构建社会主义市场经济秩序、制约政府的预算行为与维护纳税人的权益具有重要作用。进而对新预算法中存在的问题进行分析,并基于公共财政视野提出了完善我国预算法律制度的对策。  相似文献   

Development of Category‐Based Induction and Semantic Knowledge          下载免费PDF全文

Anna V. Fisher  Karrie E. Godwin  Bryan J. Matlen  Layla Unger 《Child development》2015,86(1):48-62

Category‐based induction is a hallmark of mature cognition; however, little is known about its origins. This study evaluated the hypothesis that category‐based induction is related to semantic development. Computational studies suggest that early on there is little differentiation among concepts, but learning and development lead to increased differentiation based on taxonomic relatedness. This study reports findings from a new task aimed to (a) examine this putative increase in semantic differentiation and (b) test whether individual differences in semantic differentiation are related to category‐based induction in 4‐ to 7‐year‐old children (N = 85). The results provide the first empirical evidence of an age‐related increase in differentiation of representations of animal concepts and suggest that category‐based induction is related to increased semantic differentiation.  相似文献   

Effects of Mexican Immigrant Parents’ Daily Workplace Discrimination on Child Behavior and Family Functioning          下载免费PDF全文

Anna Gassman‐Pines 《Child development》2015,86(4):1175-1190

This study investigated Mexican immigrant parents’ reports of perceived workplace discrimination and their children's behavior, parents’ moods, and parent–child interactions. Parents of one hundred and thirty‐eight 3‐ to 5‐year‐old children were asked to complete one survey daily for 2 weeks (N = 1,592 days). On days when fathers perceived discrimination, fathers and mothers reported more externalizing child behaviors, and mothers reported fewer positive child behaviors. When mothers perceived discrimination, they reported more externalizing child behaviors; fathers reported more internalizing child behaviors. Parents reported worse mood on days with perceived discrimination. Perceived discrimination was not strongly related to parent–child interactions. For fathers, but less so for mothers, those whose psychological acculturation indicated separation had more negative relations between daily perceived workplace discrimination and child and family outcomes.  相似文献   

An Empirical Comparison of DDF Detection Methods for Understanding the Causes of DIF in Multiple-Choice Items     

Youngsuk Suh  Anna E. Talley 《教育实用测度》2015,28(1):48-67

This study compared and illustrated four differential distractor functioning (DDF) detection methods for analyzing multiple-choice items. The log-linear approach, two item response theory-model-based approaches with likelihood ratio tests, and the odds ratio approach were compared to examine the congruence among the four DDF detection methods. Data from a college-level mathematics placement test were analyzed to understand the causes of differential functioning. Results indicated some agreement among the four detection methods. To facilitate practical interpretation of the DDF results, several possible effect size measures were also obtained and compared.  相似文献   

Criticism and Assessment Applied to New Media Art     

Anna Ursyn 《Teaching Artist Journal》2015,13(4):204-217

Developing new criteria with which to assess work in new media arts.  相似文献