基于数据挖掘技术的专利信息分析   总被引：3，自引：0，他引：3  

马芳  王效岳 《情报科学》2008,28(11):1672-1675

随着计算机技术和网络技术的的发展,各行各业积累的数据量越来越大.而专利信息集是目前世界上最大的技术信息集,几乎囊括了一切应用领域内的技术成果.为了提取隐含在其中的、人们事先不知道但又潜在有用的知识,将数据挖掘技术应用于专利信息分析,如采用聚类算法对专利文本进行挖掘、采用关联规则对专利发明人进行挖掘,以发现用户感兴趣的知识,并使之转化为有效的竞争情报.  相似文献   

最优特征子集的遗传算法求解     

郑继绍  朱文兴 《莆田学院学报》2006,13(2):34-37

指出最优特征子集选择问题(OFSS)是个NP-Hard问题,寻找一个近似算法具有现实意义。遗传算法提供了一种求解复杂系统优化问题的通用框架。使用基于小生境技术的遗传算法求解OFSS问题,以获得较好收敛性、稳定性和较快的速度。  相似文献   

关于设备布局的最短路径算法模型     

吴明华  张培森  杨人凤 《洛阳工业高等专科学校学报》2006,16(5):15-17

生产车间的设备布局设计是一个组合优化的问题。具有NP完全(Nondeterministic Polynomial Complete)、非线性等特性,常规方法较难以求解。本文提出实际路线运算法结合基因算法来求解最优设备布局结果,利用遗传算法探索生产车间设备布局问题时适值函数的确定方法。  相似文献   

模拟退火遗传算法的性能评价   总被引：5，自引：0，他引：5  

李红军 《湖南城市学院学报》2003,24(3):111-113

遗传算法和模拟退火算法的结合对遗传算法的性能有很大的改进．将遗传算法与模拟退火算法相结合，提出了模拟退火遗传算法．研究结果表明，该算法能较好地克服传统遗传算法存在的不足，并在进化速度和全局寻优能力方面有较大的突破．  相似文献   

数据库DBF文件加解密算法与源程序     

易德成 《株洲师范高等专科学校学报》2005,10(5):44-47

从密码学的角度叙述了数据库文件的加密、解密算法思想，分析了数据库文件．DBF的存储格式，并构造了对数据库DBF文件实现加密、解密算法和源程序。  相似文献   

Digital analytics in professional work and learning     

Richard Edwards  Tara Fenwick 《Studies in Continuing Education》2016,38(2):213-227

In a wide range of fields, professional practice is being transformed by the increasing influence of digital analytics: the massive volumes of big data, and software algorithms that are collecting, comparing and calculating that data to make predictions and even decisions. Researchers in a number of social sciences have been calling attention to the far-reaching and accelerating consequences of these forces, claiming that many professionals, researchers, policy-makers and the public are just beginning to realise the enormous potentials and challenges these analytics are producing. Yet, outside of particular areas of research and practice, such as learning analytics, there has been little discussion of this to date in the broader education literature. This article aims to set out some key issues particularly relevant to the understandings of professional practice, knowledge and learning posed by the linkages of big data and software code. It begins by outlining definitions, forms and examples of these analytics, their potentialities and some of the hidden impact, and then presents issues for researchers and educators. It seeks to contribute to and extend debates taking place in certain quarters to a broader professional education and work audience.  相似文献   

关于数学问题的解法与计算机算法的讨论     

张金岭 《邢台学院学报》2006,21(4):105-106

通过实例,对数学问题在数学中的解决方法和在计算机中的算法以及算法的复杂性进行了讨论。  相似文献   

Adaptive Controller for Vehicle Active Suspension Generated Through LMS Filter Algorithms     

孙建民  舒歌群 《天津大学学报(英文版)》2006,12(3):163-168

The least means squares (LMS) adaptive filter algorithm was used in active suspension system. By adjusting the weight of adaptive filter, the minimum quadratic performance index was obtained. For two-degree-of-freedom vehicle suspension model, LMS adaptive controller was designed. The acceleration of the sprung mass,the dynamic tyre load between wheels and road,and the dynamic deflection between sprung mass and unsprung mass were determined as the evaluation targets of suspension performance. For LMS adaptive control suspension, compared with passive suspension, acceleration power spectral density of sprung mass acceleration under the road input model decreased 8-10 times in high frequency resonance band or low frequency resonance band. The simulation results show that LMS adaptive control is simple and remarkably effective. It further proves that the active control suspension system can improve both the riding comfort and handling safety in various operation conditions, and the method is fit for the active control of the suspension system.  相似文献   

显露模式(Emerging Patterns)的有效挖掘     

周文刚  职为梅 《周口师范学院学报》2002,19(2):75-78

EPs可以用来在数据库中进行知识发现 ,也可以捕获时标数据库中的显露趋势或数据类之间的有用对比 .由于Apriori属性对EPs不再适用 ,而且多维数据集或小支持度阈值 (如 0 5 % )有太多的侯选项集 .对此Naive算法代价太大 ,这使得EPs的有效挖掘成为一个挑战性问题 .为解决这些问题 ,本文介绍使用精确的边界描述大型项集集合 ,设计只操作边界集的EPs挖掘算法 ,并且使用边界表示已发现的EPs .  相似文献   

用遗传算法求解具有多阶段决策特点的最短路问题     

柯林  叶茶花 《九江师专学报》2008,(6):72-74

本文应用遗传算法解决具有多阶段决策特点的最短路问题,对于较多顶点的此类最短路问题也有较好的应用。文中给出了一个有阶段数为20,共348个顶点的最短路问题的计算结果。  相似文献