共查询到20条相似文献，搜索用时 265 毫秒
1.
《International Journal of Information Management》2016,36(2):240-244
Information management during the product lifecycle has received a great deal of attention over the last few years, mainly because firms work in a complex business environment characterized by information overload, high levels of competitiveness and the acceleration of technological change. In this context, Product Lifecycle Management (PLM) software has been evolving rapidly and, today, powerful tools in the market enable high levels of information to be managed. However, commercial PLM software is mostly oriented towards large-sized firms, which poses a big challenge for small and mid-sized enterprises (SMEs). To address this issue, SMEs can develop their own Product Lifecycle Information Management (PLIM) Frameworks for managing data and information throughout the product lifecycle processes. This article presents a successful example of a PLIM Framework: the case of Pladomin’s PLIM Framework. 相似文献
2.
数据仓库作为一个完整的系统能够有效的把操作型数据集成到统一的环境中以提供决策型数据访问。而这种强大的信息处理和信息分析能力刚好能够满足数字图书馆对数据或信息进行深度加工和高度综合的需求。通过对数字图书馆数据仓库逻辑模型设计进行了初步的探索,试图证明在数字图书馆建设中引入数据仓库的可能性和数据仓库在建设数字图书馆方面的优越性。 相似文献
3.
应用产品生命周期管理软件Windchill,搭建出一个基于企业真实环境的产品生命周期管理教学平台,提升学生的工程创新实践能力.设定企业产品开发流程的角色,学生通过变换自己的角色,能够跨专业、跨学科完整的体验产品研发设计过程,使其认识和理解现代企业中产品的结构管理、文档管理、生命周期管理和工作流程管理等管理思想,提前成为企业需要的人才.学生也可组成项目团队直接在此平台上开展创新项目、课程设计、毕业设计等实践活动,培养创新精神.产品生命周期管理教学平台的构建代表了现代教学的方向,为培养卓越工程师提供有力的平台. 相似文献
4.
MARC等传统信息描述方式不适用于科学数据组织。RDA可描述各类型信息资源,基于资源描述框架理论,构建科学数据资源描述框架模型,包括科学数据集描述、数据集一数据文档描述、数据集一访问描述等,为图书馆应用RDA组织和管理科学数据提供基础。 相似文献
5.
6.
Jae-wook Ahn Peter Brusilovsky Jonathan Grady Daqing He Radu Florian 《Information processing & management》2010,46(4):383-402
The system presented in this article aims to improve information access through the use of semantic annotation utilizing a non-traditional approach. Instead of applying semantic annotations to enhance the internal information access mechanisms, we use them to empower the user of an information access system through an innovative named entity-based user interface – NameSieve. NameSieve was built to support an intelligence analyst during the process of exploratory search, an advanced type of search requiring multiple iterations of retrieval interleaved with browsing and analyzing the retrieved information. The proposed approach was implemented in the NameSieve system so that the system can transparently present a summary of search results in the form of entity “clouds.” Therefore, these clouds allow the analyst to further explore the results in a novel manner, acting together as a faceted browsing interface. We ran a user study (with ten subjects) to examine the effect of NameSieve, and the study results reported in the paper demonstrate that this new way of applying semantic annotation information was actively used and was evaluated positively by the subjects. It enabled the subjects to work more productively and bring back most relevant documents. 相似文献
7.
As access to information becomes more intensive in society, a great deal of that information is becoming available through diverse channels. Accordingly, users require effective methods for accessing this information. Conversational agents can act as effective and familiar user interfaces. Although conversational agents can analyze the queries of users based on a static process, they cannot manage expressions that are more complex. In this paper, we propose a system that uses semantic Bayesian networks to infer the intentions of the user based on Bayesian networks and their semantic information. Since conversation often contains ambiguous expressions, the managing of context and uncertainty is necessary to support flexible conversational agents. The proposed method uses mixed-initiative interaction (MII) to obtain missing information and clarify spurious concepts in order to understand the intention of users correctly. We applied this to an information retrieval service for websites to verify the usefulness of the proposed method. 相似文献
8.
《Information processing & management》2022,59(6):103070
Stance detection identifies a person’s evaluation of a subject, and is a crucial component for many downstream applications. In application, stance detection requires training a machine learning model on an annotated dataset and applying the model on another to predict stances of text snippets. This cross-dataset model generalization poses three central questions, which we investigate using stance classification models on 7 publicly available English Twitter datasets ranging from 297 to 48,284 instances. (1) Are stance classification models generalizable across datasets? We construct a single dataset model to train/test dataset-against-dataset, finding models do not generalize well (avg F1=0.33). (2) Can we improve the generalizability by aggregating datasets? We find a multi dataset model built on the aggregation of datasets has an improved performance (avg F1=0.69). (3) Given a model built on multiple datasets, how much additional data is required to fine-tune it? We find it challenging to ascertain a minimum number of data points due to the lack of pattern in performance. Investigating possible reasons for the choppy model performance we find that texts are not easily differentiable by stances, nor are annotations consistent within and across datasets. Our observations emphasize the need for an aggregated dataset as well as consistent labels for the generalizability of models. 相似文献
9.
Decision-making is often supported by computer-based models. To become a truly valuable corporate resource, such models must be easy to locate, share, and reuse. We describe a technical approach to model management aimed at establishing a database of computer models which can either be reused without modification or modified and composed with other models to assist with novel decisions.We describe a formalism for representing models and discuss various types of queries supported by the formalism. We discuss important research issues that must be addressed for successful application of the formalism to model management. Further, we argue that the field of information retrieval is the natural referent discipline for the study of model storage and retrieval and advance the argument that retrieving computer based models has an important connection to text retrieval based on documents' structure. 相似文献
10.
CAXA实体设计是一个以面向机械行业为主的三维设计软件,它突出地体现了新一代CAD技术以创新设计为发展方向的特点。利用CAXA实体设计软件来辅助教学,能大大增强学习的效率,降低学习难度,并能在潜意识中培养学生的空间思维能力。 相似文献
11.
提出了软件过程与知识应用的融合，其作为信息融合时代的一种新模式两者之间相互促进，能整合知识资源、改进企业的软件开发过程，从而提高软件产品的质量。讨论了软件过程与知识应用的融合模式，介绍了软件过程与知识应用的融合实例——知识应用平台。 相似文献
12.
随着智慧建造技术发展,设计企业智慧设计实现方法倍受关注。研究符合设计企业设计管理需求的管理平台,解决设计企业设计管理中的数据安全问题,提高建筑设计企业的设计数据安全,是设计企业完成转型升级的必经之路。设计阶段的数据管理是建设项目全生命周期数据管理中的一环,通过对三维协同设计、建筑数据化管理等的现状进行分析研究,就三维模型批注查阅不便、建筑数据格式多样化、数据安全性低等问题,运用DLP手段、数字水印技术、数据编码等计算机技术构建了一个设计管理平台,该平台过滤了设计环节数据采集的恶意信息;阻止了数据处理过程中的数据丢失与被盗;通过数据源的追溯,解决了企业间的纠纷问题。最后,对该平台的建设与应用进行研究分析,提出了可普适推广使用的模式路径。 相似文献
13.
Anna Palczewska Xin Fu Paul Trundle Longzhi Yang Daniel Neagu Mick Ridley Kim Travis 《International Journal of Information Management》2013
Efficient management of toxicity information as an enterprise asset is increasingly important for the chemical, pharmaceutical, cosmetics and food industries. Many organisations focus on better information organisation and reuse, in an attempt to reduce the costs of testing and manufacturing in the product development phase. Toxicity information is extracted not only from toxicity data but also from predictive models. Accurate and appropriately shared models can bring a number of benefits if we are able to make effective use of existing expertise. Although usage of existing models may provide high-impact insights into the relationships between chemical attributes and specific toxicological effects, they can also be a source of risk for incorrect decisions. Thus, there is a need to provide a framework for efficient model management. To address this gap, this paper introduces a concept of model governance, that is based upon data governance principles. We extend the data governance processes by adding procedures that allow the evaluation of model use and governance for enterprise purposes. The core aspect of model governance is model representation. We propose six rules that form the basis of a model representation schema, called Minimum Information About a QSAR Model Representation (MIAQMR). As a proof-of-concept of our model governance framework we develop a web application called Model and Data Farm (MADFARM), in which models are described by the MIAQMR-ML markup language. 相似文献
14.
15.
CAT技术是独立于一般CAD、CAM技术发展的，如何有效的实现CAT与CAD的集成是一个重要的问题。传统上我们采用直接对CAT数据源操作的方式来集成CAD／CAT，这存在着软件扩展性和重用性差的缺点。如果在CAD与CAT之间建立一个统一数据接口，则可以避免这些缺陷。本文利用COM技术建立统一数据接口，实现了CAD／CAT新的集成方式。 相似文献
16.
With the increasing rate of adoption and growth of cloud computing services, businesses have been shifting their information technology (IT) infrastructure to the cloud. Although cloud vendors promise high availability and reliability of their cloud services, cloud-related incidents involving outages and service disruptions remain a challenge. Understanding cloud incidents and the ability to predict them would be helpful in deciding how to manage and circumvent future incidents. In this study, we propose a hybrid model that employs machine learning and time series methods to forecast cloud incidents. We evaluate the proposed model using a sample of 2261 incidents collected from two cloud providers namely, Netflix and Hulu. Unique to this study is that our model relies solely on historical data that is independent of the underlying cloud infrastructure. Results suggest that the proposed hybrid model outperforms individual forecasting models: neural network, time series and random forest. Results also reveal important temporal insights from the proposed model and highlights the practical relevance of historical data to forecast and manage cloud incidents. 相似文献
17.
《International Journal of Information Management》2017,37(3):155-161
It is traditionally assumed that requirements specification, as a product of requirements engineering, has a high impact on the ensuing software development stages. Therefore, the knowledge management used to construct the requirements specification should be performed in a structured manner to discover, analyze and understand the data–information–knowledge chain, both tacit and explicit, that the interested parties possess. In this article, the results of a literature review are presented, seeking to answer the following questions: (1) What is the meaning of knowledge in requirements engineering? (2) What approaches are proposed to manage knowledge in requirements engineering? (3) Can the efficiency and the efficacy of knowledge management models be evidenced in requirements engineering? Thirty-six works were chosen for analysis out of a total 83 found in our search. The analysis showed that (1) knowledge has a central significance at this stage, but the authors have yet to agree on the best methods to impart and apply that knowledge; (2) no general framework has emerged as a validated approach to manage knowledge for requirements engineering; and (3) the evaluation marks for model efficiency and efficacy are low, consisting mostly of personal interpretations. 相似文献
18.
从教学需求出发,设计与开发了三维虚拟数码单反相机,通过3DS MAX进行建模,再使用VRML软件进行交互设计并实现网上发布,从而建立了逼真的交互式三维虚拟实验环境,可以让学生随时通过网络浏览三维场景,提高学习兴趣,改善教学效果。 相似文献
19.
网络教室和各种电子教室软件的普及使用,给信息技术教师演示教学和机房管理带来了便利。在这种教学环境中,由于教师和学生面对的都是显示器,使得师生之间的眼神、肢体语言等交流逐步减少。离开了面对面的交流,教师通过观察获取反馈信息的手段被逐步淡化。因此,网络没有拉近师生的距离,反而在师生之间筑起了一道无形的墙,其直接后果就是教师更关注于把精心设计的教学内容顺利展现出来,却无法即时与学生进行沟通和反馈,无法对课堂上瞬息万变的事件快速地做出回应。可见,先进的技术在带来各种便利的同时,也衍生出了不少副作用。针对这一现象,立足于教师的自我课堂观察,笔者进行了相关研究,期望广大信息技术教师关注课堂观察,实现有效教学。 相似文献
20.
提出了一种基于光场渲染的动态3D目标重构的方法.目前基于图像建模的方法对于复杂场景难以建模,而基于图像渲染的方法因数据量大不利于动态场景的实时渲染.因此采用了模型和图像相结合的方法,从多视点视频图像中重建动态3D模型,采用光场映射算法对重建的3D模型进行光场采样,然后对样本分解压缩.实验结果表明,在保证真实感的同时,减少了数据量,并可实现动态3D目标的重构. 相似文献