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1.
文本情感分析是近年自然语言处理领域的研究热点之一,其中微博情感分析受到了学术界和企业界的广泛关注。微博情感分析是指对用户针对某一事件发表的言论进行正向、负向和中性情感的判定。本文在分析了标准RAE 模型缺点的基础上,提出了一种基于RAE+Dropout 的联合模型。该模型利用Dropout 技术有效地预防过拟合问题的发生,同时也提高了模型训练速度。RAE+Dropout 模型与RAE+ 词性选择模型、标准RAE 模型以及SVM 模型的对比实验结果表明：RAE+Dropout 模型的准确率和F1 值属于最优,比标准RAE 模型的准确值和F1 值高出0.82% 和0.64%,尤其是在高维词语向量中RAE+Dropout 模型的效果更加明显。 相似文献
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This article explores the evolution of the role of academic journal articles submitted to the UK's Research Assessment Exercise (RAE). By reviewing their role, it is possible to see how the changes from quantitative to qualitative assessment (and the resulting problems surrounding the definition of ‘quality’ journals) has impacted both on the journals selected by academics for publishing their research and the assessment of them. Although only one part of RAE submissions, the listing of published research outputs provides the primary evidence for research quality to most RAE panels, and is a significant driver of the final grade awarded, and thus the funding received by submitting institutions. The RAE, being a peer‐reviewed assessment exercise, mirrors in some ways the peer‐review process immured within scholarly publication. The developing role of journal publications as a vehicle for academic research output is examined via the chronology of the RAE, before assessing the current situation in which published journal output formed almost 70% of all output assessed by RAE panels in the latest exercise. The impact of this increased importance of academic journals in the assessment process is considered not only for academics but also for the wider community, i.e. publishers and libraries. 相似文献
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Research was undertaken that examined what, if any, correlation there was between the h-index and rankings by peer assessment, and what correlation there was between the 2008 UK RAE rankings and the collective h-index of submitting departments. About 100 international scholars in Library and Information Science were ranked by their peers on the quality of their work. These rankings were correlated with the h and g scores the scholars had achieved. The results showed that there was a correlation between their median rankings and the indexes. The 2008 RAE grade point averages (GPA) achieved by departments from three UoAs – Anthropology, Library and Information Management and Pharmacy were compared with each of their collective h and g index scores. Results were mixed, with a strong correlation between pharmacy departments and index scores, followed by library and information management to anthropology where negative and non-significant results were found. Taken together, the findings from the research indicate that individual ranking by peer assessment and their h-index or variants was generally good. Results for the RAE 2008 gave correlations between GPA and successive versions of the h-index which varied in strength, except for anthropology where, it is suggested detailed cited reference searches must be undertaken to maximise citation counts. 相似文献
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关于基础性科学研究评价的思考 总被引：1，自引：0，他引：1
通过对NSF、NSERC、DFG、RAE、JSPS等国外基础性研究评价活动机构的考察,从评价方式、项目目标评价、“小人物”申请、专家队伍建设、交叉学科、营造宽松创新环境等几方面分析了基础性科学研究评价的问题。结合我国基础性科学研究评价的现状,从情报学的角度出发,找出存在的问题,并提出改进措施。 相似文献
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基于OCC模型和LSTM模型的财经微博文本情感分类研究 总被引：1，自引：0，他引：1
为了解决财经微博文本中网民情感状态转移的时序数据分析问题,本文提出一个基于认知情感评价模型(Ortony,Clore&Collins,OCC)和长短期记忆模型(long short term memory,LSTM)的财经微博文本情感分类模型(OCC-LSTM)。基于OCC模型从网民认知角度建立情感规则,对财经微博文本进行情感标注,并作为LSTM模型进行深度学习的训练集;基于LSTM模型,使用深度学习中的TensorFlow框架和Keras模块建立相应的实验模型,进行海量微博数据情感分类,并结合13家上市公司3年的微博文本数据进行实证研究和模型验证对比。实证研究结果发现本文提出的模型取得了89.45%的准确率,高于采用传统的机器学习方式的支持向量机方法 (support vector machine,SVM)和基于深度学习的半监督RAE方法 (semi-supervised recursive auto encoder)。 相似文献
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亚太地区世界记忆工程是世界记忆工程的重要组成部分,对于保护亚太地区各民族记忆起着重要作用。本文在论述亚太地区世界记忆工程进展的基础上,从与世界记忆工程保持一致、宣传力度较大、记忆名录层次丰富三个方面总结了成绩,从参与度、合作度、网站建设方面分析了存在的不足。最后,本文从宣传、合作与网站建设三个主要方面提出了推进亚太地区世界记忆工程进一步发展的措施。 相似文献
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刘康,字春禧,湖南宁乡人,清代末年知名藏书家,好收藏历代名人墨迹书本,编纂有《红豆山房法帖》。但由于年代久远及藏书多毁,刘康事迹已久不为人所知。文章通过对刘康藏书、刻帖、刻书活动的发掘、考证及参考湖湘近代名人对其评价,较为详细地介绍了刘康的藏书其事。从目前的资料来看,刘氏广于收藏,勤于校勘,其收藏曾获近代省内外达宦名流赞许,故研究刘康对完善湖南近代私人藏书史和保存传播文献古籍有着重要而积极的作用。 相似文献
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系统阐述了近年来中山大学图书馆在全球收集的多种不同出版时期、不同语种的《共产党宣言》的情况,重点论述了19世纪早期重要的三种版本、20世纪前半叶两种重要的英译本和中国本土首个中文节译本的收藏情况、内容与版本特色等,认为中山大学图书馆经过长期的马克思主义馆藏建设,形成了独特的《共产党宣言》版本收藏,真实地反映了《共产党宣言》在欧美、在世界和在中国传播的历史,具有极其重要的历史价值、文献价值和学术价值,对推动马克思主义理论研究与传承具有重要意义。 相似文献
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社会参与图书馆公共服务有利于图书馆服务多元化,有利于构建沟通桥梁,有利于激发馆员的服务热情,同时体现了读者权益。目前,社会参与图书馆公共服务的内容主要包括:参与图书馆的数字参考咨询服务、参与图书馆读者服务、参与图书馆的文化推广活动、参与图书馆的宣传推广服务、参与弱势群体服务、参与全民阅读服务。社会参与图书馆公共服务具有普遍性、多样性,为实现图书馆服务效益最大化提供了帮助。 相似文献
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Maria Nilsson 《Journalism Practice》2015,9(4):484-501
An increasing flow of amateur images of global crises presents challenges and opportunities for mainstream news media. Furthermore, many news organizations now solicit eyewitness reports for near-instant upload to Web editions. Yet, there is a lack of empirical research on amateur images in the regular news flow, in particular in newspapers. Thus, this case study examines the general frequency of amateur content, the gatekeeping process and the opinions of editors making decisions about images for publication in the online and print editions of four Swedish newspapers. Our findings, based on quantitative content analyses and interviews, indicate that a majority of the content falls in the hard-news category in contrast to findings in previous research about user-generated text content. Moreover, it appears regularly but in small numbers in a tabloid-content daily and a regional paper but hardly ever in broadsheet-content papers, and that opinions in the newsroom about amateur images vary from a lack of interest to a stated need for them in the regular news coverage. The low impact of amateur content may be due to the gatekeeping process and professional standards of photography, as well as a lack of audience interest and difficulties in implementing new structures in the newsrooms. In sum, the findings disprove predictions in the literature of a near-paradigmatic rise of amateur content in the mainstream news media. 相似文献
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巴里坤地处新疆天山北路东部地区,被誉为“新疆咽喉”。巴里坤是清代新疆地震多发区。其中,清代道光二十二年五月初三至初五巴里坤爆发了7.5级大地震。中国第一历史档案馆的宫中朱批奏折档、台北故宫博物院的宫中朱批奏折档、道光朝上谕档、军机处录副奏折等至少14份清宫藏地震档案极为翔实地记载了此次大地震的相关事宜。这在清代新疆地震史乃至清代全国地震史上堪称罕见。笔者据以上档案等概述了新疆巴里坤大地震的情况,论述了清廷采取的抚恤灾民、官员捐廉、借贷银两、捐款修城、派拨兵遣、起用废员、提拔官员等赈灾对策,进而剖析这些对策的利弊,从而使我们借鉴其合理对策且警惕其不妥对策,这对当今的防灾减灾工作有重要的现实意义。 相似文献
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Chinese Studies Librarianship in North America 总被引：1，自引：0，他引：1
KarenT.Wei 《图书情报工作》2004,48(12):31-34
Although American libraries had begun collecting Chinese language materials in the 19th century, notably the United States Library of Congress in 1869, Yale in 1878, Harvard in 1879, and Berkeley in 1896, East Asian studies librarianship in North America, including China studies librarianship, was not fully developed until the 1960s. There was no formal organization that represented the interest of Chinese studies librarians because there were few of them and most of them were China scholars rather than trained librarians. More than 100 years later, the number of Chinese studies librarians in North America has increased considerably, primarily in response to the demand in the field of China studies and more recently to the needs of immigrant population and the general public who has an interest in China.This paper traces the history and growth of Chinese studies librarianship in North America, documents the development of the professional organization that represents Chinese studies librarians, and exami. 相似文献
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《International Information and Library Review》1995,27(1):37-46
The main purpose of the sociology of reading is determining, through the analysis of reading data, the social processes actually at work in society. This article analyses the results of sociological research done by the research staffs of libraries in Kazakhstan between 1991 and 1994. It focuses also on the problems faced by the sociology of reading in Kazakhstan, where such research was previously considered by the authorities as purposeful only in solving the practical problems of libraries. Today, reading in Kazakhstan is characterized by frequent changes in readers' demands caused by the dramatic changes in ideology, politics and economics in the constituent parts of the former Soviet Union. Reading in Kazakhstan is becoming more utilitarian. Pragmatic information needs determine the choice of literature. There is a sharp decline in the demand for fiction compared to the 1980s. Those intellectual spheres in which ideological control was severest, such as history and philosophy, flourish and effect reading. Finally, the decision of independent Kazakhstan to encourage the use of the Kazakh language is having an effect on reading patterns. 相似文献
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图书馆读者权利与人的权利有共通之处。因此,从人权角度出发,图书馆读者权利应在社会和历史的范畴之内提出,且可分为实有权利、应有权利和法定权利。为实现图书馆读者权利的"三权统一",可以在以下几方面加强工作:图书馆立法、管理制度、图书馆协会及学会、图书馆规章制度、图书馆教育职能和图书馆读者。 相似文献
16.
Harold Niven 《广播与电子媒介杂志》2013,57(3):337-376
The Eleventh Survey was published in Volume XIII, No. 1; the Tenth in Vol. X, No. 3; the Ninth in Vol. IX, No. 1; the Eighth in Vol. VIII, No. 1; the Seventh in Vol. VII, No. 1; the Sixth in Vol. VI, No. 1; the Fifth in Vol. IV, No. 4; the Fourth in Vol. III, No. 4; the Third in Vol. II, No. 2; and the Second in Vol. I, No. 1 of the Journal of Broadcasting. Dr. Harold Niven, the compiler, is a vice‐president of the National Association of Broadcasters and Executive Secretary of the Association for Professional Broadcasting Education. He has served on the faculties of several academic institutions. A somewhat more comprehensive report, including lists of faculty members, is available in limited supply from the author. 相似文献
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关于民族地区图书馆实现文献信息资源共建共享的思考 总被引：9，自引：1，他引：8
分析了民族地区图书馆的现状。阐述了民族地区图书馆实现文献资源共建共享的意义。从7个方面详细叙述了民族地图书馆怎样实现文献资源的 共建共享，这就是加强民族文献建设；加快民族地区图书馆信息技术建设；建立标准和规范；建设民族图书馆特色数据库；发展民族图书馆电子阅览室；编制民族地区联合目录，开展馆际交换、互借和藏书分工协调，提高民族地区图书馆专业人员的素质。对今后开展民族地区图书馆文献资源的共建共享提出了建议。 相似文献
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陈景韩是清末民初一位真正以报业为志趣的报人,然而他在新闻史人物研究中的地位一直被边缘化。他曾任职上海《时报》和《申报》长达28年,在其漫长的新闻生涯中积累了丰富的报刊经验,形成了富有特色的新闻思想,集中表现在独立的新闻职业精神、客观公正的新闻理念、不随流俗的报业革新思想,以及富有远见的新闻团体意识。他的新闻思想对近现代新闻业的职业身份转变、新闻本位复归、业务革新倡行、团体意识提升、职业伦理规范等方面产生了深远影响。 相似文献
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《至正条格》是元代后期一部重要的法典,颁行于元顺帝至正六年。此法典久已亡佚。幸运的是,2002年韩国庆州发现该书元刻残本,2007年予以公布。其"断例"部分"职制"门有15条与元代的档案文书有关,涉及档案传递、档案查勘、档案保管、档案利用等内容,这为我们研究元代档案提供了新的资料。 相似文献