共查询到16条相似文献,搜索用时 812 毫秒
1.
2.
3.
由于提金工艺参数的优化对提金率的提高和原料的高效利用有至关重要的影响,因此基于数据挖掘技术和关联规则理论,采用Apriori算法挖掘了提金工艺历史数据库中对提金率有影响的可控参数关联规则,得到了可控过程参数间的相对关系曲线,确定了工艺参数优化区间,有效提高了提金率。可为类似的流程工业生产优化问题的研究提供参考。 相似文献
4.
基于云计算的关联规则挖掘算法 总被引:1,自引:0,他引:1
针对医疗行业数据爆炸但知识贫乏的现象,提出了一种基于云计算的关联规则挖掘算法,该算法基于云计算的核心计算模式MapReduce,在此计算模式下部署Apriori算法。 相似文献
5.
6.
采用FTP-图(频繁时序图)的时间序列方法对流程企业中的实际运行数据进行数据挖掘,首先给出基于拓扑关系的时间序列的定义,分析FTP-图连接、候选TP-图剪枝和采用哈希树的候选TP-图计数方法,然后采用模糊理论找出偏离常规运行状态的参数点并模糊化,采用时间窗对参数离散处理,得到时间序列数据库.根据Apriori算法原理,提出基于FTP-图的时间序列分析算法并编程实现,起到对设备故障预警和生产优化的决策作用. 相似文献
7.
8.
9.
10.
本文以PID控制算法为基础,结合数据挖掘中的关联规则算法,提出了一种拥有参数预测功能的PID温度控制系统,并对该系统进行仿真实验。该方法实现简单,实用性强,对现有控制系统改变性小,具有普遍意义。 相似文献
11.
In this paper, a novel data mining method is introduced to solve the multi-objective optimization problems of process industry. A hyperrectangle association rule mining (HARM) algorithm based on support vector machines (SVMs) is proposed. Hyperrectangles rules are constructed on the base of prototypes and support vectors (SVs) under some heuristic limitations. The proposed algorithm is applied to a simulated moving bed (SMB) paraxylene (PX) adsorption process. The relationships between the key process variables and some objective variables such as purity, recovery rate of PX are obtained. Using existing domain knowledge about PX adsorption process, most of the obtained association rules can be explained. 相似文献
12.
论述了入侵检测系统的基本概念,针对目前入侵检测系统中存在的问题,提出了一个基于数据挖掘技术的自适应入侵检测系统模型。介绍了该系统模型的基本思想,阐述其结构及主要功能,着重分析了该系统的数据挖掘和检测过程。利用数据挖掘技术自动地从大量数据中提取重要的特征和新的模式,生成有意义的规则并建立检测模型,实现对分布式拒绝服务攻击DDoS(D istrbute Den ial of Service)入侵的检测方法。 相似文献
13.
化学结构二维子结构检索的开发 总被引:5,自引:0,他引:5
将图形通用匹配VF算法应用到化学结构子结构检索中,用面向对象的方法,实现了化学结构数据库中二维子结构检索功能,程序各模块之间相互独立、可移植性强、健壮性好. 通过与3DFS比较,结果正确,适于处理大型化学结构数据库,现已应用于中药数据库系统药物先导化合物的发现. 相似文献
14.
15.
Yang YangTian Lin Xiao L. WengJawwad A. Darr Xue Z. Wang 《Computers & Chemical Engineering》2011,35(4):671-678
Metal oxide nanoparticles are promising materials in applications for fuel cells, gas sensors and fine chemical catalysis. Their functionality depends excessively on composition, structure as well as synthesis and processing conditions. Continuous hydrothermal flow synthesis (CHFS) reactors are an effective technology to make nanoceramics. In order to increase sample throughput of CHFS, a manual high-throughput continuous hydrothermal (HiTCH) flow synthesis process capable of formulating scores of samples per day was developed. More recently, a fully automated nanoceramics synthesis platform called RAMSI (rapid automated synthesis instrument) based on the HiTCH synthesis technology was developed. When large numbers of nanoceramics are made and formulated into appropriate libraries, automated analytical instruments can be used to allow collection of a large amount of useful data. This paper describes the information flow management system of RAMSI (as well as CHFS) and the data mining system for supporting discovery, QSAR (quantitative structure-activity relationship) modeling and DoE (design of experiments). Case studies demonstrating the use of the high-throughput data mining system are presented. These include clustering of Raman spectra, interpretation of X-ray diffraction (XRD) measurements, and QSAR model building linking XRD data and photocatalytic properties. A genetic algorithm method for DoE is also presented that can guide the experiments to search optimal XRD patterns. 相似文献