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[matlab编程] bfgs

BFGS算法(BFGS algorithm),是一种逆秩2拟牛顿法。Hk+,满足拟牛顿方程的逆形式Hk+}少一、k=s.当Hk正定且(,',少)}0时Hkh,也正定,因此,由BFGS修正确定的算法xk+} - xk - HkF Cxk)是具有正定性、传递性的拟牛顿法,它也是无约束优化中最常用的、最稳定的算法之一这种算法是布罗依丹(Broy-den,C. G.)于1969年,以及弗莱彻(Fletcher , R. ) ,戈德福布(Goldforb,D. )、香诺(Shan no, D. F.)于1970年分别得到的,故称为BFGS算法.
The BFGS algorithm is an inverse rank 2 quasi-Newton method.Hk +, to satisfy the inverse form of the quasi-Newton equation Hk +} less one, k = s. When Hk is definite and (, ', less)} 0 Hkh, is also positive definite, therefore, the algorithm determined by the BFGS correction xk +} - xk - HkF Cxk) is a quasi-Newton method with positive definiteness and transitivity. It is also one of the most commonly used and most stable algorithms in unconstrained optimization. This algorithm was Broy-den (CG) in 1969, and Fletcher (R.), Goldforb (D.), and Shanno (DF) were obtained in 1970 respectively, hence the BFGS algorithm. (2018-03-17, WINDOWS, 1KB, 下载3次)

http://www.pudn.com/Download/item/id/1521270574776280.html

[matlab编程] juanji

matlab.褶积(又名卷积)和反褶积(又名去卷积)是一种积分变换的数学方法,在许多方面得到了广泛应用。用褶积解决试井解释中的问题,早就取得了很好成果;而反褶积,直到最近,Schroeter、Hollaender和Gringarten等人解决了其计算方法上的稳定性问题,使反褶积方法很快引起了试井界的广泛注意。有专家认为,反褶积的应用是试井解释方法发展史上的又一次重大飞跃。他们预言,随着测试新工具和新技术的增加和应用,以及与其它专业研究成果的更紧密结合,试井在油气藏描述中的作用和重要性必将不断增大。
matlab realize juanji. (2018-01-22, WINDOWS, 11KB, 下载10次)

http://www.pudn.com/Download/item/id/1516582400309271.html

[matlab编程] Matlab实现HHT程序

matlab实现hht的编程,很好用,可以试一试
Matlab implementation of HHT programming, very easy to use, you can try (2017-09-14, WINDOWS, 2KB, 下载19次)

http://www.pudn.com/Download/item/id/1505376210898360.html

[matlab编程] 画图程序

好玩的画图程序,激发学习兴趣,适合初学者。可以试一试
Fun drawing program, to stimulate interest in learning, suitable for beginners. You can try (2017-08-19, WINDOWS, 1KB, 下载1次)

http://www.pudn.com/Download/item/id/1503110715140968.html
总计:4