共查询到20条相似文献，搜索用时 15 毫秒
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While past research has shown that learning outcomes can be influenced by the amount of effort students invest during the learning process, there has been little research into this question for scenarios where people use search engines to learn. In fact, learning-related tasks represent a significant fraction of the time users spend using Web search, so methods for evaluating and optimizing search engines to maximize learning are likely to have broad impact. Thus, we introduce and evaluate a retrieval algorithm designed to maximize educational utility for a vocabulary learning task, in which users learn a set of important keywords for a given topic by reading representative documents on diverse aspects of the topic. Using a crowdsourced pilot study, we compare the learning outcomes of users across four conditions corresponding to rankings that optimize for different levels of keyword density. We find that adding keyword density to the retrieval objective gave significant learning gains on some topics, with higher levels of keyword density generally corresponding to more time spent reading per word, and stronger learning gains per word read. We conclude that our approach to optimizing search ranking for educational utility leads to retrieved document sets that ultimately may result in more efficient learning of important concepts. 相似文献
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基于Ontology的个性化检索 总被引：4，自引：0，他引：4
目前检索工具的设计大都面向所有用户，而不考虑用户个人的特殊信息需求。本文提出一种基于Ontology的个性化检索方法，该方法自动学习用户查询的历史记录，构建用户兴趣模型，以此推导用户新提问的真正意图，满足用户特殊的信息需求。该方法适用于Internet特定领域或者特定用户群、企业网等智能信息检索。 相似文献
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《Library & information science research》2023,45(1):101222
Searches with learning intent typically require the users to interact with the searching environment and perform knowledge acquisition features such as scan, read, and process the online content to fulfill their information needs. To capture indicators from searching behaviors that could account for the knowledge gained during a Web search, a qualitative study was performed using the Concurrent Think-Aloud protocol to observe the mechanisms of transfer and map knowledge flows during 78 search sessions. Findings indicate evidence of transfer of learning in the form of sixteen online information searching strategy indicators. This research aids the understanding of how knowledge is gained during search sessions and how to identify behaviors that could indicate that learning has occurred, which could be used to represent knowledge gain on Web search engines. In this way, it can aid search engines to become not only better tools of searching, but also tools of learning. 相似文献
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[目的/意义]对文献数据库用户心智模型演进的驱动因素结构进行测量。[方法/过程]研究采用问卷调查法收集483份关于文献数据库用户对其心智模型演进驱动因素认知的问卷,采用二阶验证性因素分析方法对收集到的数据进行分析。[结果/结论]研究发现文献数据库用户心智模型的驱动因素有文献数据库界面引导与提示、自我摸索、与同学交流、文献数据库信息服务产品、搜索引擎学习迁移、简单信息检索任务、复杂信息检索任务、信息检索课程、请教老师、图书馆信息检索培训和购物网站学习迁移。这些因素对用户心智模型演进的重要性依次升高。此外,由于用户心智模型构成维度的复合性,每种驱动因素对文献数据库内容认知、信息检索方法认知、信息检索结果筛选的影响都存在差异。研究结果可为文献数据库的界面优化设计和用户信息素养培训提供指导建议。 相似文献
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游戏化学习思维在儿童教学中具有重要影响,能够激发儿童的学习动机,增加学习兴趣。本研究针对香港儿童阅读现状,设计开发了游戏化阅读平台——“阅读大挑战”,同时基于游戏化理论框架,分析该平台的设计原理,并从使用动机、对阅读兴趣的影响、阅读习惯和阅读能力等方面对部分学生、家长和学科教师进行访谈调研。研究发现,“阅读大挑战”能够激发儿童的阅读动机,改善阅读习惯,提升阅读能力,为儿童阅读发展提供教学启示。 相似文献
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信息检索课实训教学是培养和提高学生信息素养、学习能力及解决实际问题能力的关键因素。文章提出改变当前较为传统的教学方式,运用情境学习理论和学习迁移理论,融合多任务情境学习的需求,创新实训教学方法,实行“课内实训+小组讨论汇报+汇报总结点评”三位一体的教学方式。实践证明,该教学方式更加符合学生学习认知规律,可以拓宽信息检索课程的应用环境,塑造灵动有趣有用的课程新形象,开启高效的集体协作学习模式,训练学生科学研究问题的思路和方法,丰富学生的学习体验。 相似文献
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Lynda Kelly 《Archival Science》2004,4(1-2):45-69
Museums present different contexts for learning, particularly when compared with places such as schooos, universities and
libraries. They have been described as free-choice learning environments visited by a broad range of people. Museums have
the opportunity to shape identities—through access to objects, knowledge and information visitors see themselves and their
culture reflected in ways that encourage new connections, meaning making and learning. However, across the world museums are
finding themselves competing with other leisure and learning experiences in an increasingly global world. The long history
of audience research in the cultural sector demonstrates the interest museums have had in their visitors over time. This paper
outlines the development of audience research in museums, the context within which it operates, and describes the processes
of audience research through a series of case studies drawn from the work of the Australian Museum Audience Research Centre.
It is argued that the shift in museums from mission-led program development to balancing content and audience needs through
a transaction approach requires a broader research-focused agenda. While traditional ways of conducting evaluations are necessary
and useful, to remain viable audience research needs to be more strategic, working across the sector in new ways and utilising
new methods. How programs impact on users and facilitate learning about a wide range of key issues that museums are concerned
with is a leadership role that audience research can take across both the cultural sector and other free-choice learning contexts.
To achieve this, a communities of practice approach is suggested as a potential framework for audience research in the contemporary
museum. 相似文献
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As the volume and variety of information sources continues to grow, there is increasing difficulty with respect to obtaining
information that accurately matches user information needs. A number of factors affect information retrieval effectiveness
(the accuracy of matching user information needs against the retrieved information). First, users often do not present search
queries in the form that optimally represents their information need. Second, the measure of a document’s relevance is often
highly subjective between different users. Third, information sources might contain heterogeneous documents, in multiple formats
and the representation of documents is not unified. This paper discusses an approach for improvement of information retrieval
effectiveness from document databases. It is proposed that retrieval effectiveness can be improved by applying computational
intelligence techniques for modelling information needs, through interactive reinforcement learning. The method combines qualitative
(subjective) user relevance feedback with quantitative (algorithmic) measures of the relevance of retrieved documents. An
information retrieval is developed whose retrieval effectiveness is evaluated using traditional precision and recall. 相似文献
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全媒体时代大学生阅读环境分析 总被引：1，自引：0，他引：1
全媒体时代,新媒体、新技术的发展逐渐改变着阅读中传者与受者之间的关系,让受众之间存在互动,同时阅读信息的表达方式开始多样化、信息的出版渠道逐渐多样化、信息趋于表面化、信息内容的权威性降低,大学生的阅读需要和阅读方式也随之发生了变化。在此种情况下,图书馆应该实现阅读空间共享,改善阅读资源建设,优化阅读设备,进行阅读行为识别,制订科学的阅读指导措施,加强阅读服务管理,从而为大学生营造一个理想的阅读环境。 相似文献
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借用大众传播学中的受众分层方法,将以图书为媒介的受众划分为阅读趋零型、目标明确型和营销导向型,分别分析三种类型受众的特征,初步探讨图书出版针对三种类型受众的可行发展途径。研究表明：培养阅读趋零型受众的阅读习惯（兴趣）、保证目标明确型受众的图书资讯和购买渠道需求的双满足、综合运用好威信效应、晕轮效应和从众心理以引导营销导向型受众的图书购买决策,是建立在受众分层基础上的图书出版的可行发展路径。 相似文献
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[目的/意义]如何理解新手在与学术数据库交互过程中其心智模型的演进过程和学习模式是值得关注的问题,探究任务类型对学术数据库新手用户心智模型和学习模式的影响能够更好地帮助用户使用学术数据库。[研究设计/方法]本研究通过77位新手用户参与完成三种不同类型的任务(事实型搜索、探索型搜索和干涉型搜索)前后分别绘制的中国知网概念图的实验,对概念图的结构差异和内容差异进行分析,探讨不同任务情境下学术数据库新手心智模型的演进规律及学习模式。[结论/发现]研究表明用户信息搜索前后心智模型的演进模式受到任务类型的驱动,呈现出不同的概念图结构和维度内容;用户在不同任务的搜索前后均进行了学习行为,但学习模式存在差异,大多数新手用户在事实型任务和干涉型任务搜索后进行了有意义的学习,而在探索型任务搜索后用户进行了初步学习。[创新/价值]从任务类型的影响视角丰富了“搜索即学习”中的新手用户心智模型和学习模式的研究内容,有利于信息专业人员为新手开展信息检索技能培训和优化检索系统设计。 相似文献
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JungWon Yoon 《Library & information science research》2011,33(4):269-275
With the proliferation of images in daily life, it is crucial to investigate what, where, why and how people search images in response to their everyday needs. In order to examine the daily needs of image searchers, a survey questionnaire was administered to 58 college students. The results demonstrated that the majority of college students use Google or Google Image for searching images, because of its familiarity and user-friendly interface. Although searchers reported a high success rate (85.6%) of image retrieval, they wanted search engines to return more relevant images and fewer irrelevant and redundant images. They also desired search engines to provide high resolution and full scale images. Students searched for images for various purposes, including to: prepare presentation materials, use as computer wallpaper, get ideas for purchasing, travel destinations, or beauty/fashion items, see what something looks like, verify names, solve problems, out of curiosity, and so on. Some types of needs revealed that users were interested in associated textual information, as well as the image itself. The implications for image retrieval system design are 1) it is proposed that metadata information (size, quality, type, copyright information) be utilized in browsing or navigating images, and 2) further research on an information retrieval system that can support users looking for both text and images concurrently is suggested. 相似文献
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Ka Po Lau Dickson K.W. Chiu Kevin K.W. Ho Patrick Lo Eric W.K. See-To 《The Journal of Academic Librarianship》2017,43(3):201-208
The rapid increase of smartphone usage in recent years has provided students the opportunity to participate in mobile learning (m-learning) anywhere, anytime. Academic institutions are also following this trend to launch many m-learning services. This article investigates the differences of the user needs between undergraduate (UG) and postgraduate (PG) students though an online survey with 140 Library Information Systems (LIS) subjects in a Japanese university in order to provide solid foundations for future m-learning studies. We find that UG and PG students do not show significant differences in adopting m-learning by smartphones despite the fact that they have different learning patterns. The m-learning frequencies of smartphones generally range from weekly to monthly, where using search engines is the most frequent, and reading academic resources is the least frequent. They tend to use these services for handling their daily routines (such as search engine, social networks) rather than their academic activities (such as using online databases to search for academic materials). Further, the results also show that content displaying issues (e.g., small display screen, text unable to enlarge) are barriers for most subjects in using these m-learning services. 相似文献
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[目的/意义]针对电子舞曲数字资源急剧增长带来的资源组织与检索需求匹配度低的问题,尝试构建电子舞曲信息资源检索需求模型,以指导新网络环境下的电子舞曲信息资源组织实践活动。[方法/过程]通过对国内主流电子舞曲音乐平台的检索实验,得出电子舞曲检索需求访谈提纲,进而运用扎根理论探究电子舞曲听众的音乐信息检索需求并建构相应的信息检索需求模型。[结果/结论]研究发现,电子舞曲听众的需求具有"成长性",这种"成长性"连接了听众音乐信息检索需求的审美主体（听众）和审美客体（音乐）两个维度,而促生该"成长性"的内因是信息需求的马太效应。研究指出电子舞曲的资源组织需兼顾主观感受、外部描述、内容要素和生产过程等核心维度,为新网络环境下电子舞曲信息资源组织提供了参考依据。 相似文献
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[目的/意义] 充分调研目前较为流行的英语分级阅读体系和标准，并且应用于大学英语分级阅读实践中，不仅为大学英语分级阅读教学改革提供可靠的实践依据，而且对在当前大学一流本科"以本为本"的人才培养目标下，如何通过图书馆服务创新彰显专业馆员的作用和能力进行深入思考。[方法/过程] 上海师范大学图书馆基于当前大学一流本科的"人才培养"目标，策划、组织并开展的大学英语阅读"域外文化经典"分级推广项目，主要是以"蓝思分级、阅读经典"为主线，借助多种媒介方式以"泛阅读"和"深阅读"为途径，倡导"课堂阅读"+"课外阅读"的互动实践模式，不仅对大学英语传统教学起到辅助作用，而且为今后大学英语分级阅读教学改革提供可靠的实践依据。[结果/结论] 根据大学阅读推广活动的受众特征以及学校本科教学的最终目标，大学图书馆阅读推广活动的策划应该紧密结合学校培养方向，综合考虑学生学习与成长的迫切需要，同时策划过程中需要"精耕细作"，多渠道创新阅读推广模式，才能体现图书馆的专业价值，从而促进图书馆资源和服务工作的健康有效开展。 相似文献
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傅立云 《大学图书情报学刊》2012,30(5):61-63
文章介绍了“博客”技术在高校文献检索课程教学中的应用,指出这一应用突破了“照本宣科”、“纸上考试”的旧教学模式,打造一个师生互动的学习平台,取得了一定的教学效果,但依然存在博客内容与形式单一、学生参与热情不高等问题.文章针对这些问题进行了分析,并提出了具体的解决方法. 相似文献
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Marie Speare 《The Journal of Academic Librarianship》2018,44(6):762-774
Graduate students at the University of Manitoba were surveyed to find out if they used reference management software (RMS), features used, challenges and barriers to using RMS. Interest in different types of PDF management features and training options were also investigated. Both users and non-users of reference management software were invited to participate. Non-users managed their citations and references with a variety of other tools. The principal reasons for non-use were that students were not aware of options that were available, and the amount of time needed to learn the program. RMS users also mentioned the steep learning curve, problems with extracting metadata from PDFs, technical issues, and problems with inaccurate citation styles. Most of the students saved PDF documents to their computer. Students were most interested in full-text searching of PDFs, automatic renaming of PDFs, and automatically extracting citation metadata from a PDF. PDF annotation and reading tools were also of some interest. Mobile features were of the least interest. There were no statistically significant differences in the interest of PDF management features between the user and non-user groups but there were statistically significant differences in the interest of some of the training options between the groups. 相似文献