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排序方式: 共有684条查询结果,搜索用时 15 毫秒
51.
一种基于数据聚类的鲁棒SIFT特征匹配方法 总被引:2,自引:0,他引:2
针对噪声敏感造成的SIFT特征匹配鲁棒性低问题,提出一种基于数据聚类的两阶段特征匹配方法.在满足特征匹配几何距离最邻近本质要求下扩展了k d数据结构,使其不但能够完成算术平均化匹配特征离线聚类,而且能够实现第1阶段聚类特征在线匹配.在此基础上,给出一种概率最优投票策略选择关键图像进行第2阶段匹配,最后合并两阶段属于关键图像的所有匹配特征对.实验结果表明,对于大量存在重叠关系的图像集合,该方法能够有效减少重复特征数量,降低噪声信息对特征匹配的干扰,极大地提高特征匹配的鲁棒性. 相似文献
52.
Voting over Multiple Condensed Nearest Neighbors 总被引:4,自引:0,他引:4
Ethem Alpaydin 《Artificial Intelligence Review》1997,11(1-5):115-132
53.
红外图像序列小目标检测预处理技术 总被引:22,自引:6,他引:22
文中就如何复杂背景条件下低信噪比的小目标检测概率问题展开了讨论,提出了用空间高通滤的方法改善图像质量,达以抑制背景噪声,增强小目标的目的,并交坑通滤波和中值滤波做了一个简单的比较,随后采用分层投票表决法对目标进行检测,取得了良好效果。 相似文献
54.
Kehao Tao;Zhilong Wang;An Chen;Yanqiang Han;Jinyun Liu;Xitian Zhang;Jinjin Li; 《Small (Weinheim an der Bergstrasse, Germany)》2024,20(42):2402756
In traditional machine learning (ML)-based material design, the defects of low prediction accuracy, overfitting and low generalization ability are mainly caused by the training of a single ML model. Here, a Soft Voting Ensemble Learning (SVEL) approach is proposed to solve the above issues by integrating multiple ML models in the same scene, thus pursuing more stable and reliable prediction. As a case study, SVEL is applied to develop the broad chemical space of novel pyrochlore electrocatalysts with the molecular formula of A2B2O7, to explore promising pyrochlore oxides and accelerate predictions of unknown pyrochlore in the periodic table. The model successfully established the structure-property relationship of pyrochlore, and selected six cost-effective pyrochlore from the periodic table with a high prediction accuracy of 91.7%, all of which showed good electrocatalytic performance. SVEL not only effectively avoids the high costs of experimentation and lengthy computations, but also addresses biases arising from data scarcity in single models. Furthermore, it has significantly reduced the research cycle of pyrochlore by ≈ 22 years, offering broad prospects for accelerating the development of materials genomics. SVEL method is intended to integrate multiple AI models to provide broader model training clues for the AI material design community. 相似文献
55.
Jared Freeman Drew Leins Conrad Bell IV The SD Research Consortium 《Theoretical Issues in Ergonomics Science》2019,20(1):27-38
AbstractOrganisations conducting research programs often focus the work of their scientists and technologists on challenge problems (CPs). These challenges are designed to ensure that progress is measurable and relevant to the goals of the program sponsor. Generating and selecting pertinent CPs is difficult, as is assessing their value. We describe a method of generating and selecting CPs and its application in a highly collaborative, multi-organisation research program. Thirty-eight biologists, chemists, mathematicians and computer scientists across academic, commercial and government organisations generated and ranked their top choices from among 12 richly described candidate challenge problems. A ranked-choice voting formula was applied. Five CPs were highly scored; the remaining seven were distributed across a lower range of scores. The program sponsor subsequently directed researchers to address six CPs, including the elected five. Analysis of the rationales that participants offered for their CP rankings revealed four domain-independent dimensions of value: capability, speed, impact and synergy. These dimensions of value can help managers of interdisciplinary research programs systematically select a portfolio of CPs that will efficiently apply utilise resources towards program goals and facilitate measurement of scientific progress. 相似文献
56.
李蔚 《智能建筑电气技术》2008,2(3):25-28
本文对会议扩声系统、讨论和表决系统、红外线同声传译系统的设计要点作了一些探讨和总结。在论述电声设计的同时,特别阐明了电声专业对建声专业的技术要求以及扩声控制室、译音室对土建专业的设计要求。 相似文献
57.
Christa D. Jensen Donald J. Lacombe Stuart G. McIntyre 《Papers in Regional Science》2013,92(3):651-666
The Conservative Party won the 2010 General Election in the United Kingdom, gaining the most votes and seats of any single party. Using Bayesian spatial econometric methods, we show that significant spatial dependence exists in Conservative voting behaviour and select the spatial Durbin model as the best model to explain this phenomenon. This paper examines these spatial effects as well as the effects of a range of economic, socio‐economic, and political variables. Perhaps the most interesting result is that incumbency has effects beyond an incumbent's own constituency. 相似文献
58.
陈晓 《重庆理工大学学报(自然科学版)》2006,20(7):68-71
阐述了资本多数决原则的确立与法理基础;分析了资本多数决的利弊,指出如不对资本多数决的施行加以控制,则极有可能滥用,损害中小股东及公司利益,妨害市场经济发展;提出以控制股东诚信义务为法理依据遏制资本多数决的滥用,并结合各国相关法理和具体法律规范,评价我国此次公司法修改在遏制资本多数决滥用方面的相关规定。 相似文献
59.
多数票循环在社会选择领域是引人关注的问题.对于偏好选举在过半数原则下是否发生"无Condorcet胜出者的多数票循环",提出并证明了判定定理,分析了影响多数票循环产生的条件及其根源,在不对偏好进行限制的条件下,提出并证明了偏好选举中避免多数票循环产生的优胜条件和办法. 相似文献
60.
同态加密算法是基于秘密同态的概念,是秘密同态的一个子集。同态加密技术可以对加密数据直接进行运算,并且运算结果也自动加密。正是基于此,使得同态加密技术在安全多方计算、数据库加密、电子投票等领域具有广泛的应用。同态特性主要包括加法特性、乘法特性、混合乘法特性。文章对目前广泛应用的三大公钥密码体制的同态特性进行了分析,并对满足加法同态的Pallier密码体制进行了研究。为后续研究全同态加密算法提供理论基础和方法指导。 相似文献