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排序方式： 共有8626条查询结果，搜索用时 22 毫秒
1.
目前图书馆缺乏有效的工具来统计、分析业务数据,以便为图书馆的决策提供有效支持,为此设计一个基于业务数据的决策支持系统,并在此基础上构建数据仓储模型,实现图书馆决策的智能化. 相似文献
2.
采用虚拟仪器技术可实现软硬件资源的共享,便于不同自动测试系统的组建,同时还可更加有效地应用计算机所具备的各种功能,实施图像化显示、信号分析、处理和存储数据等各种作业。文章基于LabVIEW的虚拟仪器技术对数据采集及分析系统的开发进行研究和分析。 相似文献
3.
Biomedical researchers often work with massive, detailed and heterogeneous datasets. These datasets raise new challenges of information organization and management for scientific interpretation, as they demand much of the researchers’ time and attention. The current study investigated the nature of the problems that researchers face when dealing with such data. Four major problems identified with existing biomedical scientific information management methods were related to data organization, data sharing, collaboration, and publications. Therefore, there is a compelling need to develop an efficient and user-friendly information management system to handle the biomedical research data. This study evaluated the implementation of an information management system, which was introduced as part of the collaborative research to increase scientific productivity in a research laboratory. Laboratory members seemed to exhibit frustration during the implementation process. However, empirical findings revealed that they gained new knowledge and completed specified tasks while working together with the new system. Hence, researchers are urged to persist and persevere when dealing with any new technology, including an information management system in a research laboratory environment. 相似文献
4.
针对数字图书馆中的图像、视频、音频等无结构化数据的集成问题,提出了语义对象模型的概念,实现无结构化数据的统一全局对象表示。在此基础上,提出了一种以XML数据模型为基础的无结构化数据集成方法。 相似文献
5.
Web 2.0 changed everyday life in many aspects, including the whole system that orbits around the purchase of products and services. This revolution necessarily involved also companies, because customers became increasingly demanding. The diffusion of social media platforms pushed customers to prefer this channel for quickly obtaining information and feedback about what they want to buy, as well as for asking help after the selling. In this framework, many organisations adopted a new way of providing assistance known as social customer care. A direct link to companies allows customers to obtain real-time solutions. In this paper, we introduce a new strategy for automatically managing the information listed in the requests that customers send to the social media accounts of companies. Our proposal relies on the use of network techniques for extracting high-level structures from texts, highlighting the different concepts expressed into the customers’ written requests. The texts can be then organised on the basis of this new emerging information. An application to the requests sent to the AppleSupport service on Twitter shows the effectiveness of the strategy. 相似文献
6.
This paper describes a lesson centered around a metric for measuring partisan gerrymandering: the efficiency gap. We situate the efficiency gap in the current US political climate, describe the activity itself, and then provide recommendations for readers interested in adapting the lesson for their own classrooms. 相似文献
7.
对比分析国内外环境数据监控的研究现状及相关产品,剖析存在的问题,介绍为解决高校网络中心机房设备无人值守时的安全问题而设计开发的一套基于网络的开放性网络监控和管理系统,并对该系统在高校信息机房的应用情况进行分析研究。该系统采用基于SOC的支持WEB发布的嵌入式监控站（Supervisory Station）,具备通用标准接口/协议设计、开放性的元数据等特性。 相似文献
8.
Recent studies have shown that the interpretation of graphs is not always easy for students. In order to reason properly about distributions of data, however, one needs to be able to interpret graphical representations of these distributions correctly. In this study, we used Tversky’s principles for the design of graphs to explain how 125 first-year university students interpreted histograms and box plots. We systematically varied the representation that accompanied the tasks between students to identify how the design principles affected students’ reasoning. Many students displayed misinterpretations of histograms and box plots, despite the fact that they had the required knowledge and time to interpret the representations correctly. We argue that the combination of dual process theories and Tversky’s design principles provides a promising theoretical framework, which leads to various possibilities for future research. 相似文献
9.
【目的/意义】从马克思主义活动理论出发,分析大学生数据素养教育活动的系统性与发展性问题,为大学生数据素养教育活动构建一个可行模型,以期推进大学生数据素养教育体系的完善,促进课程育人模式的革新。【方法/过程】基于马克思主义活动理论视角,在厘清数据素养相关概念的基础之上,构建了大学生数据素养教育模型,并详细阐释了数据素养活动系统与活动要素。【结果/结论】在马克思主义活动理论的框架下,从识别主体需求、强化目标导向、明确层级结构等方面提出了大学生数据素养教育发展策略。【创新/局限】从活动理论的哲学角度,系统创新地阐述了大学生数据素养教育的研究模型体系,该理论模型的实践转化与验证,将是今后进一步的研究方向。 相似文献
10.
Suzan Verberne Eva D’hondt Antal van den Bosch Maarten Marx 《Information processing & management》2014
We digitized three years of Dutch election manifestos annotated by the Dutch political scientist Isaac Lipschits. We used these data to train a classifier that can automatically label new, unseen election manifestos with themes. Having the manifestos in a uniform XML format with all paragraphs annotated with their themes has advantages for both electronic publishing of the data and diachronic comparative data analysis. The data that we created will be disclosed to the public through a search interface. This means that it will be possible to query the data and filter them on themes and parties. We optimized the Lipschits classifier on the task of classifying election manifestos using models trained on earlier years. We built a classifier that is suited for classifying election manifestos from 2002 onwards using the data from the 1980s and 1990s. We evaluated the results by having a domain expert manually assess a sample of the classified data. We found that our automatic classifier obtains the same precision as a human classifier on unseen data. Its recall could be improved by extending the set of themes with newly emerged themes. Thus when using old political texts to classify new texts, work is needed to link and expand the set of themes to newer topics. 相似文献