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Web-based推荐系统中的会话推荐多样性研究 被引量:2
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作者 李晶皎 孙丽梅 王骄 《小型微型计算机系统》 CSCD 北大核心 2014年第6期1265-1269,共5页
Web-based推荐系统通常用推荐的准确性来衡量推荐算法的优劣,而Web-based推荐系统中用户的浏览行为以会话为单位,因此用户会话期内推荐的多样性是评价Web-based推荐系统推荐质量的一个重要指标.提出会话推荐多样性的概念,提出了一种能... Web-based推荐系统通常用推荐的准确性来衡量推荐算法的优劣,而Web-based推荐系统中用户的浏览行为以会话为单位,因此用户会话期内推荐的多样性是评价Web-based推荐系统推荐质量的一个重要指标.提出会话推荐多样性的概念,提出了一种能够提高会话推荐多样性的融合协同过滤算法,在用户会话期内建立会话推荐列表,有效避免会话推荐树中出现推荐环路,消除会话推荐树中的重复推荐.通过Movielens数据集测试表明,提出的方法可以大幅度提高Web-based推荐系统的会话推荐多样性,同时也提高了推荐准确率. 展开更多
关键词 web-based推荐系统 会话推荐多样性 会话推荐树 融合协同过滤
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Peer-Instruction—哈佛大学物理课程教学新方法 被引量:138
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作者 张萍 Eric Mazur 《中国大学教学》 CSSCI 北大核心 2010年第8期69-71,共3页
Peer—Instruction教学方法是哈佛大学著名教授Eric Mazur创立,使用专门设计的用于揭示学生错误概念和引导学生深入探究的概念测试题(Concep Tests),借助计算机投票系统(Computerized Voting System),组织大班课堂教学,变传统... Peer—Instruction教学方法是哈佛大学著名教授Eric Mazur创立,使用专门设计的用于揭示学生错误概念和引导学生深入探究的概念测试题(Concep Tests),借助计算机投票系统(Computerized Voting System),组织大班课堂教学,变传统单一的讲授为基于问题的自主学习和协作探究,有效地改变了传统课堂教学手段、教学模式。在大班课堂教学中实现学生自主学习、合作学习、师生互动、生生互动。本文旨在介绍这种教学方法,阐明其教育意义和促进学生学习方面的作用,综述了PI教学方法的广泛应用和相关研究结果。 展开更多
关键词 Peer—instruction教学方法 概念测试题 合作学习 课堂讨论
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Project-based Instructions教学法的产生及其应用
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作者 汪宏 《北京理工大学学报(社会科学版)》 2003年第z1期70-71,共2页
Project-basedInstructions是一种突破传统课堂授课的教学方法。它要求学生在学习过程中进行独立思考、积极参与,在教师的指导下,通过个人活动或者集体合作等形式完成既定学习任务。通过这种学习,学生可以增强学习的主动性,提高解决实... Project-basedInstructions是一种突破传统课堂授课的教学方法。它要求学生在学习过程中进行独立思考、积极参与,在教师的指导下,通过个人活动或者集体合作等形式完成既定学习任务。通过这种学习,学生可以增强学习的主动性,提高解决实际问题的能力,获得独立工作经验,还可以强化合作意识。在大学英语教学过程中适当地借鉴这一教学法,可以帮助学生进一步理解语言的社会属性,掌握语言的本质意义,从而更好地理解语言的精髓。 展开更多
关键词 公共英语 教学法 应用.
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The Value of Effective Strategies Employed in Vocabulary Instruction in College English Reading 被引量:1
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作者 Wang Ruiyao \ \ 《首都师范大学学报(社会科学版)》 2000年第S2期65-69,共5页
Vocabulary teaching is one aspect of language teaching that has not been given the attention it deserves until recent years. For a long period of time, vocabulary is simply taught in the way by asking students to stud... Vocabulary teaching is one aspect of language teaching that has not been given the attention it deserves until recent years. For a long period of time, vocabulary is simply taught in the way by asking students to study and memorize its meaning and spelling, its part of speech and its general function in a sentence. Thus, a student with a command of five thousand English vocabulary still finds it hard to adapt himself to the requirement of our demanding reading assignments, in particular, to the extensive reading task, which is more demanding due to its wide range of materials and large amount of vocabularies. According to Wilkins (1979: 111) "Without grammar very little can be conveyed, without vocabulary, nothing can be conveyed." Yet without a deeper understanding of how vocabulary is taught in the classroom and which methods of teaching are more effective for learners, the teaching of vocabulary may not achieve the desired effects. By researching the topic on vocabulary learning and instruction, this essay intends to bring the attention of both teachers and learners to the weaknesses of the traditional approach of teaching vocabulary and some different strategies in vocabulary instruction with the aim of improving the students’ reading comprehension.\; 展开更多
关键词 VOCABULARY teaching STRATEGIES Non-verbal: gestures demonstrations affixes etc. Intensive VOCABULARY instruction: contextual approaches Procedural KNOWLEDGE Conditional KNOWLEDGE
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A Framework for Web-Based Mechanical Design and Analysis
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作者 Chiaming Yen Wujeng Li 《厦门大学学报(自然科学版)》 CAS CSCD 北大核心 2002年第S1期210-,共1页
In this paper, a Web-based Mechanical Design and A na lysis Framework (WMDAF) is proposed. This WMADF allows designers to develop web -based computer aided programs in a systematic way during the collaborative mec han... In this paper, a Web-based Mechanical Design and A na lysis Framework (WMDAF) is proposed. This WMADF allows designers to develop web -based computer aided programs in a systematic way during the collaborative mec hanical system design and analysis process. This system is based on an emerg ing web-based Content Management System (CMS) called eXtended Object Oriented P ortal System (XOOPS). Due to the Open Source Status of the XOOPS CMS, programs d eveloped with this framework can be further customized to satisfy the demands of the user. To introduce the use of this framework, this paper exams three differ ent types of mechanical design and analysis problems. First, a repetitive design consideration and calculation process is transferred into WMADF programs to gai n efficiency for wired collaborative team. Second, the considered product solid model is created directly through the use of XOOPS program and Microsoft Compone nt Object Model (COM) instances. To the end of the paper, an example linked with ANSYS is used to indicate the possible application of this framework. 展开更多
关键词 web-based mechanical design and analysis frame work CMS XOOPS COM ANSYS
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Instructions to Authors
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《云南农业大学学报(自然科学版)》 CSCD 北大核心 2018年第6期1181-1181,共1页
1.Journal of Yunnan Agricultural University is spon-sored by Yunnan Agricultural University and has been published since1986.The journal was initially pub-lished semi-annually,and changed to quarterly in1989and bimont... 1.Journal of Yunnan Agricultural University is spon-sored by Yunnan Agricultural University and has been published since1986.The journal was initially pub-lished semi-annually,and changed to quarterly in1989and bimonthly in2004.As a comprehensive sci-entific periodical publication in China and abroad,Journal of Yunnan Agricultural University won the ti-tles of Chinese core journals,the core of Chinais sci-ence and technology journals,the core of Chinai ag-ricultural science journals. 展开更多
关键词 instructionS to AUTHORS YUNNAN AGRICULTURAL UNIVERSITY
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INSTRUCTIONS FOR AUTHORS
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《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2017年第2期413-413,共1页
Aims and scope Journal of Systems Engineering and Electronics,keeping abreast with the development trend of science and technology worldwide,reports the latest developments and achievements in both theoretical and pra... Aims and scope Journal of Systems Engineering and Electronics,keeping abreast with the development trend of science and technology worldwide,reports the latest developments and achievements in both theoretical and practical aspects of systems engineering,electronics and related research areas.The journal welcomes high quality original papers from a wide range of countries.The scope of the journal includes systems engineering,military systems,electronic technology,defense electronic technology,control theory and practice,software algorithm and simulation,reliability,computer development and application,and other topics in all related fields. 展开更多
关键词 instructionS x0020 AUTHORS FOR
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INSTRUCTIONS FOR AUTHORS
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《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2016年第5期1135-1135,共1页
Journal of Systems Engineering and Electronics,keeping abreast with the development trend of scienceand technology worldwide, reports the latest developmentsand achievements in both theoretical andpractical aspects of... Journal of Systems Engineering and Electronics,keeping abreast with the development trend of scienceand technology worldwide, reports the latest developmentsand achievements in both theoretical andpractical aspects of systems engineering, electronicsand related research areas. The journal welcomes highquality original papers from a wide range of countries.The scope of the journal includes systems engineering,military systems, electronic technology, defense electronictechnology, control theory and practice, softwarealgorithm and simulation, reliability, computerdevelopment and application, and other topics in allrelated fields. 展开更多
关键词 instructionS FOR AUTHORS WWW WORK MUST
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INSTRUCTIONS FOR AUTHORS
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《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2014年第4期F0003-F0003,共1页
Journal of Systems Engineering and Electronics,keeping abreast with the development trend of science and technology worldwide,reports the latest developments and achievements in both theoretical and practical aspects ... Journal of Systems Engineering and Electronics,keeping abreast with the development trend of science and technology worldwide,reports the latest developments and achievements in both theoretical and practical aspects of systems engineering, 展开更多
关键词 instructionS FOR AUTHORS WORK MUST
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INSTRUCTIONS FOR AUTHORS
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《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2015年第4期F0003-F0003,共1页
Aims and scope Journal of Systems Engineering and Electronics, keeping abreast with the development trend of science and technology worMwide, reports the latest develop- meats and achievements in both theoretical and ... Aims and scope Journal of Systems Engineering and Electronics, keeping abreast with the development trend of science and technology worMwide, reports the latest develop- meats and achievements in both theoretical and practical aspects of systems engineering, electronics and related research areas. The journal welcomes high quality original papers from a wide range of countries. The scope of the journal includes systems engineering, military systems, electronic technology, defense elec- tronic technology, control themT and practice, soft- ware algorithm and simulation, reliability, computer development and application, and other topics in all related fields. 展开更多
关键词 instructionS FOR AUTHORS WORK HIGH
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INSTRUCTIONS FOR AUTHORS
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《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2012年第2期F0003-F0003,共1页
Aims and scope Journal of Systems Engineering and Electronics, keeping abreast with the development trend of science and technology worldwide, reports the latest develop- ments and achievements in both theoretical and... Aims and scope Journal of Systems Engineering and Electronics, keeping abreast with the development trend of science and technology worldwide, reports the latest develop- ments and achievements in both theoretical and practical aspects of systems engineering, electronics and related research areas. The journal welcomes high quality original papers from a wide range of countries. The scope of the journal includes systems engineering, military systems, electronic technology, defense elec- tronic technology, control theory and practice, soft- ware algorithm and simulation, reliability, computer development and application, and other topics in all related fields. 展开更多
关键词 instructionS FOR AUTHORS WWW WORK HIGH
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INSTRUCTIONS FOR AUTHORS
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《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2015年第2期F0003-F0003,共1页
Journal of Systems Engineering and Electronics, keeping abreast with the development trend of science and technology worldwide, reports the latest develop- ments and achievements in both theoretical and practical aspe... Journal of Systems Engineering and Electronics, keeping abreast with the development trend of science and technology worldwide, reports the latest develop- ments and achievements in both theoretical and practical aspects of systems engineering, electronics and related research areas. The journal welcomes high quality original papers from a wide range of countries. The scope of the journal includes systems engineering, military systems, electronic technology, defense elec- tronic technology, control theory and practice, soft- ware algorithm and simulation, reliability, computer development and application, and other topics in all related fields. 展开更多
关键词 instructionS FOR AUTHORS WWW WORK HIGH
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INSTRUCTIONS FOR AUTHORS
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《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2019年第1期223-223,共1页
Aims and scope Journal of Systems Engineering and Electronics, keeping abreast with the development trend of science and technology worldwide, reports the latest developments and achievements in both theoretical and p... Aims and scope Journal of Systems Engineering and Electronics, keeping abreast with the development trend of science and technology worldwide, reports the latest developments and achievements in both theoretical and practical aspects of systems engineering, electronics and related research areas. 展开更多
关键词 AUTHORS instructionS
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INSTRUCTIONS FOR AUTHORS
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《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2012年第5期F0003-F0003,共1页
Aims and scope Journal of Systems Engineering and Electronics, keeping abreast with the development trend of science and technology worldwide, reports the latest developments and achievements in both theoretical and p... Aims and scope Journal of Systems Engineering and Electronics, keeping abreast with the development trend of science and technology worldwide, reports the latest developments and achievements in both theoretical and practical aspects of systems engineering, electronics and related research areas. The journal welcomes high quality original papers from a wide raage of countries. The scope of the journal includes systems engineering, military systems, electronic technology, defense elec- tronic technology, control theory and practice, software algorithm and simulation, reliability, computer development and application, and other topics in all related fields. 展开更多
关键词 instructionS FOR AUTHORS WORK HIGH
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INSTRUCTIONS FOR AUTHORS
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《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2012年第3期F0003-F0003,共1页
Aims and scope Journal of Systems Engineering and Electronics, keeping abreast with the development trend of science and technology worldwide, reports the latest developments and achievements in both theoretical and p... Aims and scope Journal of Systems Engineering and Electronics, keeping abreast with the development trend of science and technology worldwide, reports the latest developments and achievements in both theoretical and practical aspeets of systems engineering, electronics and related research areas. The journal welcomes high quality original papers from a wide range of countries. 展开更多
关键词 instructionS FOR AUTHORS WWW WORK HIGH
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INSTRUCTIONS FOR AUTHORS
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《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2013年第3期F0003-F0003,共1页
Aims and scope Journal of Systems Engineering and Elaectronics,
关键词 instructionS FOR AUTHORS WWW WORK HIGH
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INSTRUCTIONS FOR AUTHORS
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《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2014年第3期F0003-F0003,共1页
Aims and scope Journal of Systems Engineering and Electronics, keeping abreast with the development trend of science and technology worldwide, reports the latest developments and achievements in both theoretical and p... Aims and scope Journal of Systems Engineering and Electronics, keeping abreast with the development trend of science and technology worldwide, reports the latest developments and achievements in both theoretical and practical aspects of systems engineering, electronics and related research areas. 展开更多
关键词 instructionS FOR AUTHORS WORK HIGH
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Instructions to Overseas Authors
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《机械设计与制造》 北大核心 2019年第3期7-7,共1页
Machinery Design and Manufacture(ISSN 1001-3997),is a famous science magazine in China in the field of Machinery.Now we welcome overseas scholars to contribute enthusiastically to increase the international distributi... Machinery Design and Manufacture(ISSN 1001-3997),is a famous science magazine in China in the field of Machinery.Now we welcome overseas scholars to contribute enthusiastically to increase the international distribution,including the recent academic reports,research achievements and the latest discoveries,in English or in both Chinese and English versions. 展开更多
关键词 instructionS OVERSEAS AUTHORS MACHINERY DESIGN
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INSTRUCTIONS FOR AUTHORS
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《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2013年第1期F0003-F0003,共1页
Aims and scope Journal of Systems Engineering and Electronics, keeping abreast with the development trend of science and technology worldwide, reports the latest developments and aclfievements in both theoretical and ... Aims and scope Journal of Systems Engineering and Electronics, keeping abreast with the development trend of science and technology worldwide, reports the latest developments and aclfievements in both theoretical and practical aspects of systems engineering, electronics and related research areas. The journal welcomes high quality original papers from a wide range of countries. The scope of the journal includes systems engineering, military systems, electronic technology, defense electronic technology, control theory and practice, software algorithm and simulation, reliability, computer development and application, and other topics in all related fields. 展开更多
关键词 instructionS FOR AUTHORS WORK HIGH
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INSTRUCTIONS FOR AUTHORS
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《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2016年第4期945-945,共1页
Aims and scope Journal of Systems Engineering and Electronics,keeping abreast with the development trend of science and technology worldwide,reports the latest developments and achievements in both theoretical and pra... Aims and scope Journal of Systems Engineering and Electronics,keeping abreast with the development trend of science and technology worldwide,reports the latest developments and achievements in both theoretical and practical aspects of systems engineering,electronics 展开更多
关键词 instructionS FOR AUTHORS WORK HIGH
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