搜索结果: 16-30 共查到“知识库 计算机科学技术基础学科其他学科”相关记录148条 . 查询时间(2.609 秒)
基于WordNet词义消歧的系统融合
系统融合 翻译错误率 词义消歧 混淆网络
2010/11/30
最近混淆网络在融合多个机器翻译结果中展示很好的性能. 然而为了克服在不同的翻译系统中不同的词序, 假设对齐在混淆网络的构建上仍然是一个重要的问题. 但以往的对齐方法都没有考虑到语义信息. 本文为了更好地改进系统融合的性能, 提出了用词义消歧(Word sense disambiguation, WSD)来指导混淆网络中的对齐. 同时骨架翻译的选择也是通过计算句子间的相似度来获得的, 句子的相似性计...
Programmable design and implementation of a chaotic system utilizing multiple nonlinear functions
Field programmable analog array chaos chaotic system mathematical modeling
2010/7/31
In addition to exhibiting a rich variety of bifurcation and chaos via tuning parameters, a chaotic system introduced by Sprott can be modeled and realized with a fixed main system block and many diffe...
Hierarchical fuzzy controller applied to multi-input power system stabilizer
Power system stabilizer (PSS) hierarchical fuzzy system (HFS) inter-area oscillation fuzzy logic controllers damping
2010/7/31
This paper proposes the application of a hierarchical fuzzy system (HFS) based on multi-input power system stabilizer (MPSS) in multi-machine environment. The number of rules increases exponentially w...
为降低嵌入式设备的能量消耗,在对能量最优化设备调度策略(EODSA)及其改进策略IEODSA1 不足进行分析的基础上,提出了一种基于子任务及其执行时间的设备调度策略———SEBDSP. 该策略将任务分成多个子任务,基于子任务执行时间和设备收支平衡点的关系进行外部设备管理,从而拓展了EODSA 和IEODSA1 动态电源管理策略的适用范围. 实验结果表明,SEBDSP 比EODSA 的平均功耗降低3...
加快构建云计算的信息化基础设施 促进技术开放创新和产业转型升级
云计算 信息化基础设施 产业
2010/3/2
云计算是基于云研究、云资源、云计算和云服务的综合、绿色、智能的信息服务体系。云计算是一种基础架构管理方法论：把大量的高度虚拟化的资源管理起来，组成一个大的资源池，用来统一提供服务。云计算具有优化产业布局、推进专业分工和提升IT资源利用率等优势，是信息产业难得的变革机遇：在“数据为王”时代的到来的今天，云计算构成今后信息产业的核心竞争力。同时，拥有自主知识产权的云计算技术会成为国家产业安全、信息安全...
The Importance of Context-Dependent Privacy Requirements and Perceptions to the Design of Privacy-Aware Systems
Importance Context-Dependent Privacy Requirements Perceptions
2010/2/28
The issue of information privacy protection is ensured nowadays byEuropean and national legislation. However, it is not possible toprotect information system user privacy adequately without establishi...
基于PCA与支持向量回归的储层渗透率预测
支持向量回归 测井参数 岩心参数
2009/12/28
在测井技术与储层基本特征研究的基础上，对与渗透率相关的测井参数和岩心参数进行了分析，根据传统的储层渗透率预测方法，提出了一种基于主成分分析与支持向量回归的储层渗透率预测方法。应用主成分分析对测井参数和岩心参数进行数据降维，优选出与渗透率最相关的参数，将优选出的测井参数和岩心参数作为支持向量回归模型的输入参数进行渗透率预测。实验结果表明，利用主成分分析算法提取的特征参数与渗透率有较好的相关性，且支持...
代谢途径分析研究进展及其应用
代谢网络 代谢途径 基元模式
2009/12/10
由于缺乏详尽的热力学参数，基于网络拓扑的代谢途径分析是现阶段最重要的途径分析方法。首先简单地介绍了基于网络的途径分析方法发展简史，随后着重说明了基于凸分析的两种代谢途径分析方法：基元模式和极端途径及它们之间的异同，并详细阐述了这两种方法的具体应用。最后，使用极端途径分析了苏云金杆菌的PHB代谢。结果表明，除了传统的途径，还存在一些新颖的途径可用于PHB合成。
树状网络上带度约束的k-tree core问题
动态规划 局部根核 贪婪思想
2009/12/10
考虑到在实际应用中，由于计算机和通信网络中一般每个设备的处理能力是有限的，在k-tree core问题的基础上，提出了同时带有度约束的k-tree core问题，即k-tree core中的每个节点在子树中的度不超过给定常数q，记为q-DTC（k）（Degree constrained Tree Core）。利用动态规划的方法，采用最优化原则先找出文中所定义的局部根核集，然后利用贪婪思想对不满足度...
A Critique of Generalizability in Interpretive Research
Critique Generalizability Interpretive Research
2009/12/9
This paper is about generalizability in interpretive systems research. The authors are concerned that, in its search for appropriate inquiry methods, the discipline of Information Systems (IS) does no...
Is a Picture Worth a Thousand Words? The Use of Non-Text Items in Information Systems Research
Picture Worth Thousand Words Non-Text Items Information Systems Research
2009/12/8
The use of non-text items (graphs, graphics and tables) is firmly established in the publishing tradition of information systems research. Non-text images are used to convey complex information in a p...
Knowledge Management and Organisational Effectiveness: balancing the mild, the wild and the crazy
Knowledge Management Organisational Effectiveness mild wild crazy
2009/12/8
In the Knowledge Age, effective Knowledge Management (KM) is seen as fundamental to the survival of many organisa-tions. Information Systems (IS) increasingly underpin KM in such organisations. The ...
Knowledge Management Audit-a methodology and case study
Knowledge Management Audit-a methodology case study
2009/12/8
The strategic importance of knowledge in today’s organisation has been discussed extensively and research has looked at various issues in developing knowledge management systems. Both the characterisa...
A metric for method complexity is proposed as an aid to choosing between competing methods, as well as in validating the effects of method integration or the products of method engineering work. It is...
Top-Down Enterprise Application Integration with Reference Models
Top-Down Enterprise Application Integration Reference Models
2009/12/7
For Enterprise Resource Planning (ERP) systems such as SAP R/3 or IBM SanFrancisco, the tailoring of reference models for customizing the ERP systems to specific organizational contexts is an establis...