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将心理学、经济学中研究的化学习模型应用于科技用户对检索方法学习的行为研究中,介绍两个经典强化学习模型Bush-Mosteller模型和B(o)rgers-Sarin模型;对科技用户信息检索过程中强化学习机理进行剖析,并设计实验室控制实验以运用学习模型对用户的学习行为进行量化分析.实验结果表明:强化学习可以成功反映科技用户对数据库检索方法的学习过程,且B(o)rgers-Sarin模型能更好地拟合科技用户行为;最后针对数据分析结果对数据库的建设提出策略建议. 相似文献
2.
网络图像检索行为与心理研究 总被引：3，自引：3，他引：0
鉴于国内图像检索行为研究的缺乏,借助用户实验和行为观察技术,采集用户的网络图像检索过程,从检索入口选择、关键行为分布、行为状态变换等不同角度描述用户网络图像检索的行为和心理。研究发现：(1)行为特征上有四类典型的图像检索行为策略、两种行为倾向和五种高频行为模式;(2)用户心理特征上主要表现为定势心理、较少的认知负担以及检索变换的心理阈值等方面;(3)与一般网络信息检索行为相比,图像检索行为既具有共性,又有一些个性特征。图1。表3。参考文献26。 相似文献
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[目的/意义]研究旨在回答不同探索式搜寻意图的用户如何表达信息需求,不同的需求表达倾向于采用哪种搜寻策略,以及该选择机制如何受用户预期绩效的影响。[方法/过程]通过理论研究探索用户搜寻意图的复杂性和搜寻策略的多元化,结合用户需求表达和用户预期绩效的分析,建立用户探索式搜寻意图对搜寻策略选择的影响机制的理论研究框架,通过情景模拟问卷获取搜寻行为数据,以揭示无向信息收集、有向信息收集、知识获取、建议咨询、社会联系5种探索式搜寻意图在选择综合搜索引擎、专业搜索引擎、个人空间SMQA、问答平台提问和短视频网站浏览策略时的策略偏好及其成因。[结果/结论]研究表明,探索式搜寻意图需求表达的差异受搜寻目标的性质和用户认知能力的影响;不同需求表达的搜寻策略选择具有显著差异;预期绩效的调节作用促进了探索式搜寻策略选择的多元化和策略转换。 相似文献
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[目的/意义]研究旨在回答不同探索式搜寻意图的用户如何表达信息需求,不同的需求表达倾向于采用哪种搜寻策略,以及该选择机制如何受用户预期绩效的影响。[方法/过程]通过理论研究探索用户搜寻意图的复杂性和搜寻策略的多元化,结合用户需求表达和用户预期绩效的分析,建立用户探索式搜寻意图对搜寻策略选择的影响机制的理论研究框架,通过情景模拟问卷获取搜寻行为数据,以揭示无向信息收集、有向信息收集、知识获取、建议咨询、社会联系5种探索式搜寻意图在选择综合搜索引擎、专业搜索引擎、个人空间SMQA、问答平台提问和短视频网站浏览策略时的策略偏好及其成因。[结果/结论]研究表明,探索式搜寻意图需求表达的差异受搜寻目标的性质和用户认知能力的影响;不同需求表达的搜寻策略选择具有显著差异;预期绩效的调节作用促进了探索式搜寻策略选择的多元化和策略转换。 相似文献
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为了满足新手用户对检索知识的在线e-学习需求与偏好,提高学术资源利用效率,有必要充分重视数据库界面设计的改善,由此开展相关的用户研究具有意义.为此本文选择数据库界面最常用的三个检索元素:初级检索、高级检索、专业检索作为实验情景,试图通过设计两种不同干预程度的界面帮助信息,让大学生新手用户在CNKI实际检索平台上执行n轮检索实验任务,由此观测用户怎么学习自认为最合适的检索方法,重点尝试探索利用MCMC转移矩阵方法观测用户这种心智活动的变化.最后得到主要的结论有:①强干预比弱干预有更大的诱导力刺激用户有意识的全面尝试学习三种方法; ②强干预比弱干预有更大的诱导力刺激用户有意识的学习专业检索方法; ③强干预比弱干预能更好的提升用户学习绩效; ④不管多大的干预,大多用户会保持一定的理性决策,在尝试各种方法后最后会依据实验任务性质聚敛到高级检索上. 相似文献
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在信息检索系统评估和信息搜寻行为研究中,实验法是常用的研究方法,而实验中的任务设计是实验成功的关键环节。设计模拟仿真工作任务情境是近年来常用的任务设计方式,而它能否替代用户的真实工作任务在很大程度上影响着实验研究结果的科学性。为验证此方法,招募42位本科生参加实验,要求其为完成一项真实工作任务和一项仿真工作任务,在CNKI中展开搜索。通过分析实验参加者在实施两项搜索任务中的交互信息检索行为和检索绩效,发现仿真工作任务与真实工作任务在属性上尽管存在某些显著差异,但并未对用户交互信息搜索行为及绩效产生显著影响。因而,仿真工作任务可以替代真实工作任务用于交互信息检索实验研究,但需要进行合理设计。 相似文献
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针对当前书目检索过程中缺少检索建议与提示而影响检索性能的现状,进行检索建议与提示策略的研究。通过阐述检索行为的概念与属性、分析用户的检索心理,挖掘用户行为数据,并在此基础上实施访问OPAC网站、输入检索词、获得检索结果及选择检索结果等检索过程与行为的引导服务与查询帮助,从而较为准确地判断用户的查询意图,对用户的检索行为给出实时的、丰富的检索建议与提示,以期增强书目检索功能,提高系统的互动性,提升用户的查询体验。 相似文献
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随着网络发展,人机交互越来越成为人们网络活动的重要内容,因此关注不同环境因素刺激下的人机交互效率成为有意义的研究课题,本文在之前对无干预①以及模拟网络系统帮助干预②条件下人们通过人机交互界面学习检索功能操作研究基础上,进一步对榜样信息干预下的观察学习进行研究,具体探索了观察学习理论及学习模型,并尝试通过控制实验分析、数学模型拟合等方法观察基于榜样信息干预下,用户在连续执行多轮检索任务中是如何跟随榜样学习选择合适的检索方法,最后得到的主要结论有:①在缺乏相关知识与经验的情况下用户行为的"跟随效应"明显,即表现出替代强化学习现象; ②当出现与检索任务匹配的刺激信息时,比如界面信息,用户会摆脱榜样干预进行独立思考,即表现出了强化学习特征; ③观察学习外部影响因素主要有:榜样人数、榜样评价,对用户学习直接产生影响作用的是检索界面; ④观察学习中场依存认知风格的用户比场独立用户的替代性强化学习特点更突出.这些结论为人机交互平台人性化设计、以及为新手用户重点打造一个友好的交互式e-学习环境提供了启示. 相似文献
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用户的差异性表现为网络检索行为和方式的不同,本文在用户网络检索行为分析的基础上,对档案检索系统设计时的界面、提示、交互等方面进行了分析. 相似文献
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Milan Grba 《Slavic & East European Information Resources》2017,18(3-4):152-164
This article surveys a sample of sources of the information about Romania available to British readers in nineteenth century British newspapers and periodicals. It traces first contacts between the Romanian lands and Britain after the union of the principalities of Wallachia and Moldavia in 1859, then after their independence from the Ottoman Empire. The article highlights an increased Romanian interest in British periodicals, which reported and reviewed Romanian literature and scholarship. The article concludes that nineteenth century British newspapers and periodicals offer a great variety and wealth of new material previously unavailable or unknown to researchers. It also states that only a portion of a large quantity of this material has been indexed and is therefore available via the bibliographic sources mentioned in the article. The author argues for the need of a new and updated British-Romanian bibliography, which can draw on new online resources offering access to thousands of new newspapers and periodical records. 相似文献
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《Slavic & East European Information Resources》2013,14(4):25-33
ABSTRACT The paper looks at library approval plans for material published in Slavic, East European, and Eurasian countries from the selector's point of view. Reasons why a selector would or would not want one are examined. Success with approval plans requires monitoring receipts, as well as good and ongoing communication among the selector, the acquistions department, and the vendor. A preliminary list of vendors offering approval plans for the countries of the region appears in the appendix. 相似文献
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《Slavic & East European Information Resources》2013,14(1):25-74
ABSTRACT The history of the almanac in Croatia is reconstructed through primary research in bibliographic and archival sources. The almanac is a vehicle for knowledge communication in informal contexts, engaging both oral tradition and literary forms traceable to medieval literacy and ways of structuring knowledge. The history of the almanac in Croatia reflects the changing context of the book trade, literacy, and the evolution of language. Four main stages are identified: (1) the beginning of the annual almanac in the seventeenth century; astrological almanacs reflecting the sensibility of the Baroque period; (2) the Enlightenment's stimulation of almanac publishing in the spirit of contemporary secular reforms in agriculture and education; (3) nineteenth-and twentieth-century almanac trade, showing complex and overlapping networks for the production, distribution and appropriation of printed almanacs;(4) roughly the end of World War II, when the almanac slowly moved out of the role of a popular mass medium and into specialized niches represented by regional, diaspora, and religious almanacs. 相似文献
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Neil De Young 《Publishing Research Quarterly》2009,25(3):139-146
Some key questions for publishers in today’s market are: Could Amazon’s recent merger and acquisitions strategy create a disruptive or paradigm shifting business model in the publishing industry? Do their recent actions post mergers and acquisitions illustrate a predicable pattern of behaviour that publishers can strategize around? This paper will explore these questions and look at some of the possible reasons behind Amazon’s business practices and the possible consequences to publishers. 相似文献
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为进一步提升武汉科技信息共享服务平台使用效率,本文从平台资源建设、资源应用、供需对接方式和供需特点等方面分析了武汉科技信息资源服务现状;基于需求和利用的角度,结合平台管理实践和走访用户、问卷调查等研究方法,从信息资源需求主体和平台自身建设管理两个维度,找出制约科技资源供需对接的主要因素;以市场化和制度化为创新理念,从政策创新、机制创新、市场化服务、环境营造、人才培养等方面提出平台建设由“资源集聚”向“需求导向”转变的对策建议. 相似文献
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Barbara Lison 《图书馆管理杂志》2013,53(2):180-187
ABSTRACTGerman authorities are expecting more than 1 million refugees by the end of 2015. These people come to Germany to seek protection and assistance and to build a new life, therefore it is important to welcome them and to assist them in their integration as soon as possible. This situation creates a versatile and perfectly fitting opportunity for cultural and educational programs, including libraries, which can play a vital role in this integration process. The key to integration is the knowledge of the German language, and the most important challenge now is to teach the necessary language skills to as many asylum-seekers as possible. 相似文献
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《Journal of Web Librarianship》2013,7(1):41-59
Abstract Many libraries use RSS to syndicate information about their collections to users. A survey of 65 academic libraries revealed their most common use for RSS is to disseminate information about library holdings, such as lists of new acquisitions. Even though typical RSS feeds are ill suited to the task of carrying rich bibliographic metadata, great potential exists for developing applications that can exploit metadata exposed to Web services via RSS. Using the MODS metadata format, entire catalog records can be seamlessly embedded in RSS 2.0 feeds. Existing tools, such as Library of Congress Java toolkits and XSLT stylesheets, can facilitate this process, while a new XSLT stylesheet may be used to create the RSS feeds complete with MODS records. As an example of the added functionality these MODS/RSS feeds can offer, records from a MODS-enriched RSS feed can be ingested into a non-RSS application such as Zotero. As more emerging library technologies use Web services architectures to handle data objects, the ability to syndicate catalog records will become more critical to providing innovative library Web services. 相似文献
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《Legal Reference Services Quarterly》2013,32(3-4):223-229
SUMMARY The Nevada Constitution provides voters with the ability to propose new statutes, amendments to existing statutes, and amendments to the State constitution through the initiative petition process. Voters can also approve or disapprove of existing statutes through the referendum petition process. Both require the circulation of a petition to collect a minimum number of signatures before the Secretary of State will place the measures on the ballot for the general election. As with other topics of law, Nevada has a profound shortage of research resources on initiatives and referenda, but State law and government Web sites provide enough information to allow for significant research. 相似文献
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SUMMARY This article is a case study of Ariel use at the University of Texas at Austin. The author divides the history of Ariel use into three distinct stages: resistance, full implementation, and enhanced. For each stage the advantages and disadvantages of using Ariel are discussed. The author concludes that using Ariel saves both money and staff time and permits faster delivery of documents than other methods. 相似文献
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《Journal of Interlibrary Loan, Document Delivery & Electronic Reserve》2013,23(4):113-119
SUMMARY CISTI, the Canada Institute for Scientific and Technical Information, is one of the world's largest document delivery suppliers, and was among the first to be fully automated. The revolutionary Intel-liDoc system, developed during the years 1993 to 1995, provided for end-to-end automation of the document delivery process, which has enabled CISTI to improve its service and accommodate growth. From the beginning Ariel was, and remains, an integral part of IntelliDoc. This article describes how Ariel has been integrated into IntelliDoc and into CIS-TI's services, showing the benefits to CISTI and to its clients. 相似文献