共查询到20条相似文献，搜索用时 78 毫秒
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该文考虑了多元模糊线性回归模型,先将一元模糊线性回归模型的参数估计的结果加以推广,接着给出了多元线性回归模型参数的h-最优线性相关估计。 相似文献
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通过给线性化回归问题加权改进了可线性化回归问题的理论和方法 ,并在此基础上给出了迭代调整线性回归问题的权来解对应的可线性回归问题的新方法 .用理论和实例说明 ,新方法解决了使偏差平方和最小意义下的可线性化回归问题 ,与传统回归法相比 ,新方法具有偏差平方和小的优点 相似文献
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文章讨论了在数据垂直分布、水平分布时的保护隐私线性回归问题,提出了两个保护隐私的线性回归协议,并对协议的正确性、安全性进行了分析.两个协议使用MIARCL函数库进行了实验验证,实验结果表明该方案能够解决两方参与的线性回归问题,并且计算效率是可以接受的. 相似文献
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王玉梅 《通化师范学院学报》2011,32(8):7-8
对于自变量具有多重线性相关性的多元线性回归,文中分别用主成分回归和PLSI回归对同一适当的问题进行建模分析,得出PLSI回归优于主成分回归的结论． 相似文献
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《兰州石化职业技术学院学报》2016,(1)
建立了煤炭工业分析指标水分、灰分、挥发分与煤炭发热量间的线性回归模型,采用分位数回归估算模型系数。通过对我国新疆伊犁地区煤炭发热量分析研究,表明基于分位数估计的线性回归模型优于基于传统的最小二乘估计的线性回归模型,且预测效果优于支持向量机。 相似文献
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线性回归分析和检验在经济中的应用 总被引：1，自引：0，他引：1
林显宁 《廊坊师范学院学报(自然科学版)》2010,10(3)
针对于回归分析中的一元线性回归模型,多元线性回归模型的方法和原理进行系统的阐述和说明,利用统计软件并结合实例提供一种快捷而有效的解决线性回归模型中参数值,同时对回归模型进行检验,包括R检验,F检验和T检验. 相似文献
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利用矩阵广义逆的有关性质,研究了一般线性回归模型设计矩阵Xnxp非列满秩时回归参数β的可估计性,并给出了回归参数β的某些线性函数cTβ可估计的充要条件. 相似文献
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针对各学科领域中常遇到的多元线性回归问题,在简单介绍回归分析基本理论的基础上,结合一具体实例,详细介绍了基于回归算法编写MATLAB程序、利用MATLAB预定义函数以及二者相结合解决多元线性回归问题的方法。方法简单实用,其中基于算法编程、利用预定义函数及二者结合解决问题的方法不仅是解决多元线性回归问题的方法,也是利用MATLAB解决各学科领域中一般性数学问题的基本方法。 相似文献
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文中研究了线性回归模型的基本原理,以实际数据为依据,经适当变换建立了二元线性回归模型,运用Spss软件得到了模拟结果,最后对结果进行了分析. 相似文献
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电子元器件可靠性寿命分析中,右截尾类型的数据居多,针对此类数据的分析方法也很多。其中,线性回归和极大似然估计应用较广。在此,运用实例对这两种方法进行了对比分析,指出了使用线性回归法进行参数估计的缺点,说明极大似然估计法是比线性回归法更优的统计模型。 相似文献
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《海外英语》2007,(5):10-11
Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help? 相似文献
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罗艳萍 《读与写:教育教学刊》2008,5(6)
The communication of people partially is the communication of cultures. Culture has a direct effect on international commercial activities in all aspects. Different conceptions about time, space, equality, law and the like, lead people to deal with things in different ways. So to know cultures of the counterpart is to facil-itate our enterprises so as to have a smooth and successful communication in commercial activity. 相似文献
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《海外英语》2007,(4):36
There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love. 相似文献
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Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject. 相似文献
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Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities. 相似文献
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RUZBEHANI Mohsen 《重庆大学学报(英文版)》2004,3(1):20-25
1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec… 相似文献
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Richard Denner 《海外英语》2007,(4):14-15
Rosco and I wait for the fishermen to return.I sit at a wooden bench near the store at Mt.Baker Resort and watch the clouds change shape. Rosco has my belt around his neck and an eight foot tow chain hooked to a tree. Dogs must be on a leash. Ducks and rabbits are loose. 相似文献