搜索结果: 16-30 共查到“知识库 数据库”相关记录1675条 . 查询时间(4.922 秒)
日本野村综合研究所咨询工作模式研究及启示
日本 野村综合研究所 咨询运行机制 智库建设
2016/11/4
文章分析了日本野村综合研究所现行的组织管理模式、人员构成和经费来源，从咨询过程中的服务对象、咨询项目的运行管理、人员配置、质量管理、外部评价机制、咨询成果的影响力等方面，系统剖析了野村综合研究所的咨询运行机制，并归纳出野村综合研究所获得成功的四点经验，为中国的智库建设提供参考。
基于蚁群算法的多连接查询优化问题研究
蚁群算法 多连接查询优化 数据库查询 最优解
2016/11/22
介绍了蚁群算法在数据库查询中的应用，在给出蚁群算法的基本原理和程序流程的基础上，对传统蚁群算法进行了改进，将伪随机状态转移规则和局部信息素更新规则引入蚁群算法，提出了基于蚁群系统解决数据库多连接查询优化的方法，建立了多连接查询优化问题的数学模型，并进行了相关的实验；结果表明：当数据库的表数目较多时，基于蚁群系统算法对解决多连接查询优化问题有良好的求解性能，在求最优解品质和求最优解时间上都有较好的效...
This paper reports on user experience with Tioga, a DBMScentric visualization tool developed at Berkeley. Based on this experience, we have designed Tioga-2 as a direct manipulation system that is mor...
Tioga-2: A Direct Manipulation Database Visualization Environment.
Tioga-2 Direct Manipulation Database Visualization Environment.
2016/5/24
This paper reports on user experience with Tioga, a DBMS-centric visualization tool developed at Berkeley. Based on this experience, we have designed Tioga-2 as a direct manipulation system that is mo...
Designing Effective Step-By-Step Assembly Instructions
Visualization Assembly Instructions
2016/5/24
We present design principles for creating effective assembly instructions
and a system that is based on these principles. The principles
are drawn from cognitive psychology research which investigat...
Understanding the Behavior of Database Operations under Program Control
D.2.3 [Software Engineering]:Coding Tools Techniques
2016/5/24
Applications that combine general program logic with persistent databases (e.g., three-tier applications) often suffer large performance penalties from poor use of the database. We introduce a program...
Data-Driven Equivalence Checking
Binary Analysis Compilers Markov Chain Monte Carlo Optimization Superoptimization
2016/5/24
We present a data driven algorithm for equivalence checking of two loops. The algorithm infers simulation relations using data from test runs. Once a candidate simulation relation has been obtained, o...
Static Analysis Techniques for Predicting the Behavior of Active Database Rules
Static Analysis Techniques Predicting Behavior Active Database Rules
2016/5/24
Methods are given for statically analyzing sets of database production rules to determine if the rules are (1) guaranteed to terminate, (2) guaranteed to produce a unique nal database state, and (3) ...
We consider the problem of specifying combinations of data structures with complex sharing in a manner that is both declarative and results in provably correct code. In our approach,abstract data type...
对目前已发生的核动力装置部分典型故障进行分析总结，归纳出征兆参数，然后利用这些征兆参数在监测模拟机上进行随机运行模拟，并构建相应的数据库。利用SPSS软件对该数据库进行故障频度分析，根据分析的结果研究其应用于定期安全审查的价值。
点云数据的海量性一直是制约点云数据处理方法的重要因素。为了寻找一种高效空间索引方法来管理海量地面点云数据，笔者通过分析LiDAR地面点云的特点，提出了一种基于平面直角坐标网和四叉树的二维点云数据组织方法——坐标网—四叉树联合准则法。实验证明，将规则网格与四叉树的方法相结合，较大程度的提高了点云数据组织与索引的效率。但是，格网间距大小的设定，还没有定量的标准，需要在以后实践中进一步进行研究总结。
解析世界最大生物识别数据库——印度Aadhaar身份识别项目
印度 生物识别数据库 身份
2015/11/5
印度自 2009 年起开始实施生物身份识别项目，至今已对全国 8.2 亿人实施了生物识别数据采集
（照片、十指指纹和虹膜扫描），为每个居民提供了唯一的 12 位身份证明编号。由此，政府可直接向每
个公民提供补贴、医疗、社保、培训、就业等服务。本文对该项目内容、做法和挑战进行分析，供我国相
关部门参考。
Distributed optimization and statistical learning via the alternating direction method of multipliers
Statistics machine learning convex optimization framework modern data set data set
2015/8/7
Many problems of recent interest in statistics and machine learning can be posed in the framework of convex optimization. Due to the explosion in size and complexity of modern datasets, it is increasi...
Block splitting for large-scale distributed learning
Machine statistics data sets convex optimization the model data collection processing machine
2015/8/7
Machine learning and statistics with very large datasets is now a topic of widespread interest, both in academia and industry. Many such tasks can be posed as convex optimization problems, so algorith...
Slope One Predictors for Online Rating-Based Collaborative Filtering
Collaborative Filtering Recommender e-Commerce Data Mining Knowledge Discovery
2015/8/3
Rating-based collaborative filtering is the process of predicting how a user would rate a given item from other user ratings. We propose three related slope one schemes with predictors of the form f(x...