期刊文献+
共找到4篇文章
< 1 >
每页显示 20 50 100
可控性能偏好下的MIMO雷达站点优化配置方法 被引量:2
1
作者 黄宝昆 张天贤 杨益川 《现代雷达》 CSCD 北大核心 2021年第7期14-20,共7页
针对多监视区域下MIMO雷达站点优化配置问题,本文提出了一种性能偏好可控的站点优化配置算法。首先,梳理了衡量监视性能的指标函数并建立优化问题的数学模型;其次,提出了基于动态参考点的粒子群优化算法(PSO),在ZDT1-ZDT3系列测试函数... 针对多监视区域下MIMO雷达站点优化配置问题,本文提出了一种性能偏好可控的站点优化配置算法。首先,梳理了衡量监视性能的指标函数并建立优化问题的数学模型;其次,提出了基于动态参考点的粒子群优化算法(PSO),在ZDT1-ZDT3系列测试函数下仿真验证了该算法的有效性,定量评估了其相对于传统静态参考点PSO算法的优势;然后,利用基于动态参考点的PSO算法对MIMO雷达站点配置问题进行优化,获取性能偏好可控的站点配置方案集;最后,在实际MIMO雷达站点配置场景下验证了该算法的有效性。 展开更多
关键词 MIMO雷达 站点配置 可控性能偏好 多监视区域
下载PDF
新能源汽车市场需求调查分析 被引量:4
2
作者 王琦 王昊辉 《中国市场》 2013年第42期151-152,共2页
本文以居民消费水平为基准,从新能源汽车试点城市中选取了北京、广州、武汉、郑州、长春及南昌作为调查城市。通过抽样调查的方式,采集了消费者在新能源汽车上的性能偏好资料,旨在探究新能源汽车市场低迷的原因,力求为新能源汽车企业提... 本文以居民消费水平为基准,从新能源汽车试点城市中选取了北京、广州、武汉、郑州、长春及南昌作为调查城市。通过抽样调查的方式,采集了消费者在新能源汽车上的性能偏好资料,旨在探究新能源汽车市场低迷的原因,力求为新能源汽车企业提供可行性意见和建议。 展开更多
关键词 新能源汽车 市场需求 性能偏好
下载PDF
Comprehensive Income in Italy: Reporting Preferences and Its Effects on Performance Indicators 被引量:1
3
作者 Olga Ferraro 《Journal of Modern Accounting and Auditing》 2011年第12期1315-1328,共14页
This paper reports on the choice made by listed Italian companies in their 2009 financial statements with respect to the option in International Accounting Standards (IAS) 1.81 concerning presentation of the stateme... This paper reports on the choice made by listed Italian companies in their 2009 financial statements with respect to the option in International Accounting Standards (IAS) 1.81 concerning presentation of the statement of comprehensive income. It is reported that most companies have chosen to use the two-statement option, and that there is some evidence that this choice is related to the size and sign of total Other Comprehensive Income (OCI). On this latter point, the paper emphatically aims to contribute to the literature on accounting policy choice with respect to a similar option in Statement of Financial Accounting Standards [SFAS] 130. In addition, pro forma calculations on Return on Equity (ROE) and Earnings per Share (EPS) are presented that illustrate, in effect, the variation across companies in size and sign of OCI. 展开更多
关键词 reporting format comprehensive income performance EPS ROE
下载PDF
Building a better recommender system in E-commerce
4
作者 黎星星 《Journal of Chongqing University》 CAS 2003年第1期68-72,共5页
This paper presents an architecture of a hybrid recommender system in E-commerce environment. The goal of the system is to make special improvements in giving precisely personalized recommendation through some effecti... This paper presents an architecture of a hybrid recommender system in E-commerce environment. The goal of the system is to make special improvements in giving precisely personalized recommendation through some effective measures. Based on the study on the existing recommendation methods of both the conventional similarity function and the conventional feedback function, several improvement algorithms are developed to enhance the precision of recommendation, which include three improved similarity functions, four improved feedback functions, and adoption of both explicit and implicit preferences in individual user profile. Among them, issues and countermeasures of a new user, prominent preferences and long-term preferences are nicely addressed to gain better recommendation. The users preferences is so designed to be precisely captured by a user-side agent, and can make self-adjustment with explicit or implicit feedback. 展开更多
关键词 recommender system users preference similarity function feedback function
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部