音乐推荐系统性能调查探究

随着国内移动音频行业的快速发展,各类音频客户端推荐系统存在的问题也在不断显现。利用 分析工具 R,对国内某音乐客户端行业报告中数据进行分析,探讨其推荐系统存在的问题、分析原因, 最后给出解决这些问题的若干措施,以期国内移动音频行业能够重视其推荐系统的构建、优化和维护, 提高用户忠诚度和满意度,更好的推动其业务的发展。     

临床医学课程知识主题图谱构建研究

[目的/意义]从知识主题的角度切入,建立全面的课程知识体系,解决现有课程体系设计和教学中的课程间知识点重复及"知识孤岛"问题,从而有效开展专业知识服务。[方法/过程]以临床医学专业主干课程为研究对象,基于医学主题词表、电子教材、电子教案等医学教育数据,通过LDA模型挖掘课程中的知识主题,利用关联分析揭示课程间、知识主题间及课程与知识主题间的细粒度关联,从而构建临床医学课程知识主题图谱。[结果/结论]研究从专业课程体系与知识主题视角构建出领域知识图谱,有助于教学管理人员及师生掌握专业知识体系,开展知识导向型教学活动,推进医学领域知识组织与服务及智慧医学教育发展。     

Investigations on the step-based research indices of Chambers and Miller

In a recent paper, Chambers and Miller introduced two fundamental axioms for scientific research indices. We perform a detailed analysis of these two axioms, thereby providing clean combinatorial characterizations of the research indices that satisfy these axioms and of the so-called step-based indices. We single out the staircase indices as a particularly simple subfamily of the step-based indices, and we provide a simple axiomatic characterization for them.     

Time gap analysis by the topic model-based temporal technique

This study proposes a temporal analysis method to utilize heterogeneous resources such as papers, patents, and web news articles in an integrated manner. We analyzed the time gap phenomena between three resources and two academic areas by conducting text mining-based content analysis. To this end, a topic modeling technique, Latent Dirichlet Allocation (LDA) was used to estimate the optimal time gaps among three resources (papers, patents, and web news articles) in two research domains. The contributions of this study are summarized as follows: firstly, we propose a new temporal analysis method to understand the content characteristics and trends of heterogeneous multiple resources in an integrated manner. We applied it to measure the exact time intervals between academic areas by understanding the time gap phenomena. The results of temporal analysis showed that the resources of the medical field had more up-to-date property than those of the computer field, and thus prompter disclosure to the public. Secondly, we adopted a power-law exponent measurement and content analysis to evaluate the proposed method. With the proposed method, we demonstrate how to analyze heterogeneous resources more precisely and comprehensively.     

Can a non-Muslim Mass Shooter be a “Terrorist”?: A Comparative Content Analysis of the Las Vegas and Orlando Shootings

ABSTRACT

This study used the 2017 Las Vegas and 2016 Orlando mass shootings as case studies to explore alleged double standards in reporting of events featuring Muslim and non-Muslim mass perpetrators of violence. The study used framing theory and content analysis to examine Los Angeles Times and New York Times coverage of the shootings during the one week immediately following each event. Findings are consistent with previous literature and the researchers’ expectations. The Orlando shooting, carried out by a Muslim, was allotted more coverage despite the fact that it produced nine fewer fatalities than the Las Vegas shooting, perpetrated by a white non-Muslim. The analysis also showed that the examined newspapers were more likely to employ a “terrorism” frame in their coverage of the Orlando shooting than in their coverage of the Las Vegas shooting; link the Orlando mass shooting with the global war on terrorism; and to humanize Stephen Paddock, the white perpetrator of the Las Vegas shooting. Framing differences found in this study may contribute to downplaying the threat of white male gun violence, and to reinforcing fears of Islam and Muslims.     

非英语专业本科生写作错误分析

写作能力是衡量英语语言技能的一个重要标准。本研究运用对比分析法和错误分析理论,对非英语专业本科生写作中的错误进行统计和分析,试图找出学生在写作过程中出现的错误特点,分析错误原因,寻求解决问题的方法和教学中相应的对策。     

近30年我国两大医学信息学期刊载文作者的统计分析

以《医学信息学杂志》和《中华医学图书情报杂志》刊发论文的作者为研究对象,统计分析其作者队伍基本情况。2种期刊论文的主要作者来自医学图书馆和医学信息研究机构,高产作者大多涉及医学图书信息学的多个研究方向,有自己的研究特色;其学术创造期一般持续20年,高产峰期约在10年左右;作者合作程度在逐年增强,但仍处较低水平。研究结果表明,这2种期刊是我国医学信息学界成果发布与学术交流最重要的论文刊发平台。     

我国高校知识库建设对比研究及启示

解释了高校知识库的含义与组成内容,分析了我国高校知识库的建设现状,指出了我国高校知识库存在起步较晚,数量较少,语言和内容单一,质量控制和版权管理有待加强等问题,提出了我国高校应该制定鼓励措施,严把质量,建立资源评价体系,制定政策,解决知识产权问题,加强合作,共建高校联盟知识库。     

国际卫生政策研究领域文献共引分析

以ISI Webof Science中30种卫生政策研究专业期刊作为数据来源,利用Citespace和Thomson Data Analyzer软件,对2004年1月-2009年10月间发表的32308篇文献及其参考文献进行了共引分析,总结了国际卫生政策研究领域的研究热点,并深入探讨了该领域的经典文献和过渡文献,为卫生政策研究人员开展相关研究提供了科学的依据。     

中华医学会第1—15次全国医学信息学术会议论文统计分析

统计分析了中华医学会第1-15次全国医学信息学术会议论文篇数、核心作者、高产单位、研究热点、研究水平等指标,探讨了医学信息学学术会议的地位、核心作者在本单位及学术界的作用及影响力,论文增长曲线变化原因以及研究热点的分布,以期为我国医学信息事业的发展提供参考和借鉴。