Temporal bibliographic networks     

《Journal of Informetrics》2020,14(1):101006

We present two ways (instantaneous and cumulative) to transform bibliographic networks, using the works’ publication year, into corresponding temporal networks based on temporal quantities. We also show how to use the addition of temporal quantities to define interesting temporal properties of nodes, links and their groups thus providing an insight into evolution of bibliographic networks. Using the multiplication of temporal networks we obtain different derived temporal networks providing us with new views on studied networks. The proposed approach is illustrated with examples from the collection of bibliographic networks on peer review.  相似文献   

Effect of class imbalance in heterogeneous network embedding: An empirical study     

《Journal of Informetrics》2020,14(2):101009

Network science has been extensively explored in solving various bibliometrics tasks such as Co-authorship prediction, Author classification, Author clustering, Author ranking, Paper ranking, etc. While majority of the past studies exploit homogeneous bibliographic network (consists of singular type of nodes and edges), in recent past there is a surge in using heterogeneous bibliographic entities and their inter-dependencies using heterogeneous information networks (HIN). Unlike homogeneous bibliographic networks, a bibliographic HIN consists of multi-typed nodes such as Author, Paper, Venue, etc. and corresponding relations. Thus bibliographic HIN is more complex and captures rich semantics of underlying bibliographic data as well as poses more challenges. Since a real-world HIN may have different number of instances for different node types, class imbalance is ubiquitous. Recent studies discuss class imbalance in brief and exploit meta-path-based strategies to address the issue. However, there is no work which quantitatively study the effect of class imbalance in regards to solving real-world bibliometrics tasks. Therefore, this paper first proposes a metric to estimate class imbalance in HIN and study the effects of class imbalance over two bibliometrics tasks, namely (i) Co-authorship prediction and (ii) Author's research area classification, using node features generated by network embedding-based frameworks for DBLP dataset. From various experimental analysis, it is evident that class imbalance in bibliographic HIN is an inherent characteristic and for better performance of the above-mentioned bibliometrics tasks, the bibliographic HINs must consider Author, Paper, and Venue as node types.  相似文献   

我国馆校结合领域研究热点及发展趋势——基于共词分析法的可视化研究          下载免费PDF全文

方慧玲  周青青  沈甸 《自然科学博物馆研究》2020,(3):5-16

深度认识国内馆校结合领域研究的主题和发展趋势,不仅有利于研究者更加详细、清楚地了解国内馆校结合发展的最新动态,也有利于推动我国馆校结合的发展。研究结果表明,我国馆校结合领域研究主要集中在馆校结合中的博物馆角色研究和馆校结合的结合特征研究两大方面,其中馆校结合的结合特征研究又可分成六个方面:馆校结合教育课程建设;馆校结合课程的教育学思考;馆校结合教育模式;馆校结合相关教育类型;馆校结合机制与策略;馆校结合现状。我国馆校结合领域研究的发展趋势为:奠定博物馆在馆校结合中的重要作用;馆校结合机制的研究日趋增加;更多体现馆校结合课程中的教育学理念;完善馆校结合评价体系。  相似文献   

论策划编辑的超前意识     

刘永坚  邹蕊 《出版科学》2007,15(3):32-33,36

好的选题资源是出版社生存和发展的基础,新形势下对于这种资源的竞争越来越激烈.好的策划编辑应具备敏锐的超前意识,领先一步抢占选题资源,才能够在竞争中处于优势地位.  相似文献   

Extending WHIRL with background knowledge for improved text classification     

Sarah Zelikovitz  William W. Cohen  Haym Hirsh 《Information Retrieval》2007,10(1):35-67

Intelligent use of the many diverse forms of data available on the Internet requires new tools for managing and manipulating heterogeneous forms of information. This paper uses WHIRL, an extension of relational databases that can manipulate textual data using statistical similarity measures developed by the information retrieval community. We show that although WHIRL is designed for more general similarity-based reasoning tasks, it is competitive with mature systems designed explicitly for inductive classification. In particular, WHIRL is well suited for combining different sources of knowledge in the classification process. We show on a diverse set of tasks that the use of appropriate sets of unlabeled background knowledge often decreases error rates, particularly if the number of examples or the size of the strings in the training set is small. This is especially useful when labeling text is a labor-intensive job and when there is a large amount of information available about a particular problem on the World Wide Web.

Haym HirshEmail:

  相似文献   

略论和谐社会下政府管制构建之新思路     

于博 《广东广播电视大学学报》2007,16(2):57-61

我国传统的政府管制具有很多弊端,已经对经济发展产生了相当的阻力.文章在"构建社会主义和谐社会"这一理论背景下,通过总结和谐社会的价值目标群,提出了以此为出发点和参照系的新型政府管制的构建思路和总目标,并对中观和微观层面的具体构建进行了尝试性探讨,以希为我国政府管制的成熟完善、真正发挥作用并最终促进人、经济与社会的全面发展有所裨益.  相似文献   

网络时代的"粉丝"狂欢——对后现代大众文化fans群体的症侯式分析   总被引：2，自引：0，他引：2  

尚香钰 《广东广播电视大学学报》2007,16(4):105-108

在后现代大众文化的网络时代下,"Fans"凭着新技术的条件,群体性地集合于一体,出现了不同于以往的一种新的状况,本文以法兰克福学派学者洛文塔尔关于"大众偶像的胜利"的消费偶像时代的确立、网络技术支持下的在线"狂欢"和网络粗口与集体"极乐乌托邦"三个角度,对后现代大众文化fans群体作一症候式分析.  相似文献   

论知识经济与高校创新型外语人才的培养     

梁卫华 《洛阳师范学院学报》2007,26(6):173-175

80年代末以前提出的具有"听说读写译"基本技能的工具型外语人才以及80年代末提出的既懂外语又懂某一专业知识的"复合型外语人才"已不能满足一些岗位的更高要求。知识经济时代需要有一批更为尖端的外语专业人才,即创新型人才,他们能在国际交流中独当一面,能够创新性地开展工作。本文首先指出知识经济环境下我国大学教育面临的普遍问题,在此基础上提出培养创新型外语人才的必要性,并对其培养模式作出有益的探讨。  相似文献   

Providing Bottom-Up Support to Middle School Science Teachers’ Reform Efforts in Using Inquiry-Based Kits     

Mark T. Jones  Charles J. Eick 《Journal of Science Teacher Education》2007,18(6):913-934

Middle grades science teachers need professional support in practice as they implement new inquiry-based science. Professional development schools can provide this bottom-up support through connecting preservice and inservice teacher education programs in classroom practice. In this study, coteaching arrangements with secondary science education majors provided additional teachers in the classroom to support a materials-rich curriculum and the needed associated pedagogies. Science education majors provided needed assistance in troubleshooting difficulties with the new curriculum. They also provided needed content knowledge to support inquiry, along with creating moments and space for teachers to reflect on inquiry practice. Ongoing assistance by preservice teachers allowed inservice teachers to progress from logistical concerns in implementing kit curriculum to concerns regarding student learning and the supporting professional development.

Charles J. EickEmail:

  相似文献   

浅谈智能建筑的防雷击问题     

魏昊 《北京工业职业技术学院学报》2007,6(4):21-24

在智能建筑中,对雷电如何采取有效的防护措施,保障智能建筑安全,已受到普遍关注.主要说明了智能建筑对防雷的要求以及论述在智能建筑中应采取的防雷措施.  相似文献