共查询到20条相似文献，搜索用时 718 毫秒
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对于农业研究中多变量线性模型参数的估计,以往常采用经典统计方法。随着计算机技术的进步,贝叶斯统计方法在科学研究的各个领域迅速发展。文章利用贝叶斯统计方法对农业研究中的多变量模型进行参数估计,并与经典统计方法进行比较,验证了贝叶斯方法的有效性。该方法可为农业研究中多变量模型参数的估计提供新的途径和手段。 相似文献
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尤青 《连云港职业技术学院学报》2014,(2):53-55
以指数型回归方程模型Y=ae^bX＋ε为研究对象,利用贝叶斯统计方法对该方程模型进行参数估计,并进行了实例演示,验证了贝叶斯统计方法的有效性. 相似文献
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对于回归方程参数的估计,常采用经典统计方法。近年来,伴随着计算机技术的快速发展,贝叶斯统计获得了广泛应用。本文利用贝叶斯统计对非线性回归方程Y=aX^b＋ε进行参数估计,并进行了实例演示,验证了该方法的有效性。 相似文献
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殷羽 《佳木斯教育学院学报》2014,(4):44-44
贝叶斯统计和经典统计是现代数理统计的两大学派,两大学派的争论对现代统计理论的发展起到了积极的促进作用.本文通过贝叶斯统计和经典统计的比较,加深了人们对贝叶斯统计的认识.本文还从经济研究、精算保险研究两个方面介绍了贝叶斯统计的应用。 相似文献
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杨艳秋 《廊坊师范学院学报(自然科学版)》2011,11(1)
贝叶斯统计是数理统计学的重要分支,贝叶斯统计走进教室是其发展的重要标志.为了提高学生素质教育的质量,改进数学教师的贝叶斯统计教学水平,根据贝叶斯统计课程的学习要求,提出了"思考—研讨—建构—创新"的教学模式,并分析了这种教学模式在教学操作过程中显示出来的优越性. 相似文献
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文章研究广义Pareto分布单变点的估计问题,利用贝叶斯方法对广义Pareto分布变点进行估计,模拟结果表明,贝叶斯方法能获得更好的效果。同时将贝叶斯方法与基于KL散度似然比统计量的极大似然法比较,得出贝叶斯方法效果更好。 相似文献
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根据经典的贝叶斯公式,推导出区间值测度的贝叶斯公式,并对其性质进行了研究,为区间值数据的统计方法研究提供了一定的理论基础. 相似文献
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文章以正态线性单方程为例,介绍了贝叶斯统计方法在计量经济学模型中的应用,并分析了该问题中贝叶斯估计与普通最小二乘估计的区别和联系. 相似文献
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人工智能的发展导致了概率理论尤其是贝叶斯网络理论的显著改革,这些改革冲击着科学哲学的三个中心问题:贝叶斯主义与非贝叶斯主义的争论;概率的解释;因果性和概率的关系。吉利斯对这些问题进行了哲学的探讨,他认为,客观概率的使用符合波普尔的统计测验方法,而主观概率的使用符合贝叶斯形式的方法。 相似文献
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邱崇丙 《唐山师范学院学报》2014,(1):21-23
汉字的六书,《说文》对“转注”一类,语焉不详。后世学者提及转注,也仅限于许慎所举出的例字。《汉字例说》一文,作者从转注的角度综合考虑,对部分现代常用字作了分析,跟传统的解释有所不同。希望能抛砖引玉,互相切磋,以推进学术研究。 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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Rachel Zupek 《海外英语》2007,(11):40-41
我们绝大部分人都同意一件事情——我们喜欢金钱。但是你对金钱的喜欢之情足够到让你创立一份事业么?.财富通常被人忽视,主要在于人们不能真正了 相似文献
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YANGShiguo 《重庆大学学报(英文版)》2004,3(1):86-88
The problem on the geometrc inequalities involving an n-dimensional simplex and its inscribed simplex is studied. Aninequality is established, which reveals that the difference between the squared circumradius of the n-dimensional simplex andthe squared distance between its circumcenter and barycenter times the squared circumradius of its inscribed simplex is not lessthan the 2(n-1)th power of n times its squared inradius, and is equal to when the simplex is regular and its inscribed siplex is atangent point one. Deduction from this inequality reaches a generalization of n-dimensional Euler inequality indicating that thecircumradius of the simplex is not less than the n-fold inradius. Another inequality is derived to present the relationship betweenthe circumradius of the n-dimensional simplex and the circumradius and inradius of its pedal simplex. 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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GUO Bao-feng Xiao Da-wei 《重庆大学学报(英文版)》2005,4(3):129-133
Using virtual reality for interactive design gives a designer an intuitive vision of a design and allows the designer to achieve a viable, optimal solution in a timely manner. The article discusses the process of making the Virtual Reality System of the Humble Administrator＇s Garden. Translating building data to the Virtual Reality Modeling Language （VRML） is by far unsatisfactory. This creates a challenge for computer designers to do optimization to meet requirements. Five different approaches to optimize models have been presented in this paper. The other methods are to optimize VRML and to reduce the file size. This is done by keeping polygon counts to a minimum and by applying such techniques as object culling and level-ofdetail switching. 相似文献