一种构造E(s~2)最优超饱和设计的方法

本文中我们基于E(s2)最优超饱和设计和区组设计之间存在的对等关系,利用构造区组设计的方法之一－循环设计法,通过最小化ｆｒｍａｘ的进一步区分,对试验次数２４的情形,构造了相应的一系列超饱和设计．同时与现有的一些结果作了比较,验证了我们构造的设计的优良性。     

A NOTE ON 2_(IV)~(m-p) DESIGNS WITH THE MAXIMUM NUMBER OF CLEAR TWO-FACTOR INTERACTIONS

In this article, the authors obtain some theoretical results for 2_(IV)~(m-p) designs to have the maximum number of clear two-factor interactions by considering the number of two-factor interactions that are not clear. Several 2_(IV)~(m-p) designs with the maximum number of clear two-factor interactions, judged using these results, are provided for illustration.     

含有纯净两因子交互作用成分的4m2n设计的某些结果

纯净效应准则是选取最优部分因析设计的重要准则之一,近年来已经成为一个活跃的研究课题.对给定的k,通过构造2n-(n-k)设计,Tang等(2002)得到了分辨度Ⅲ和ⅣV的2n-(n-k)部分因析设计的纯净两因子交互作用最大数的上下界,但是这种方法只局限于对称设计的情形.本文提出和研究了非对称情形的纯净效应问题,改进了Tang等对分辨度Ⅲ的2n-(n-k)设计的构造方法,得到了分辨度Ⅲ和ⅣV的4m2n设计的纯净两因子交互作用成分最大数的上下界,其中下界是通过构造特定的设计得到的.比较表明,本文所得设计的纯净两因子交互作用成分数在很多情形下都达到了最大.这说明在纯净效应准则下,用这些构造方法来构造4m2n设计是令人满意的.     

可分解不完全区组设计的若干结果

考虑某类可分解不完全区组设计——PRIB设计的均匀性. 在一离散偏差度量意义下, 得到了PRIB设计是最均匀设计的一个充要条件；证明了均匀PRIB设计是关联的；提出了用某类U-型设计构造这类区组设计的方法, 并给出了该类设计的一个存在性结果, 这一方法建立起了PRIB设计和U-型设计之间的一重要桥梁.     

2_(IV)~(m-p)设计的弱最小低阶混杂与最多纯净两因子交互效应

纯净准则和最小低阶混杂准则是选择部分因析设计的两个重要准则.通过研究纯净两因子交互效应的个数,证明了某些2_(IV)~(m-p)设计具有弱最小低阶混杂,并给出了2_(IV)~(m-p)设计具有弱最小低阶混杂并包含最多纯净两因子交互效应的一些条件.同时给出了几个弱最小低阶混杂2_(IV)~(m-p)设计的例子,并构造了两个非同构的弱最小低阶混杂2_(IV)~(13-6)设计.     

一种构造三水平因子超饱和设计的准则和算法

在工业统计试验和其他科学试验中,常遇到因子个数多而所允许的试验次数少的情况,这时要用到超饱和设计,以前的文章仅研究了二水平因子的超饱和设计,本文对于三水平因子的超饱和设计提出了一种基于典则相关意义下的优良性准则和构造算法,并给出了试验次数为９和１８可分别安排到２６和３０个因子的三水平超饱和设计表。     

A CASE STUDY IN THE APPLICATION OF SUPERSATURATED DESIGNS TO COMPUTER EXPERIMENTS

Supersaturated design is essentially a fractional factorial design in which the number of potential effects is greater than the number of runs. In this article, the supersaturated design is applied to a computer experiment through an example of steady current circuit model problem. A uniform mixed-level supersaturated design and the centered quadratic regression model are used. This example shows that supersaturated design and quadratic regression modeling method are very effective for screening effects and building the predictor. They are not only useful in computer experiments but also in industrial and other scientific experiments.     

用填充方法构造最优超饱和设计

超饱和设计是一种试验次数不足以同时估计其设计矩阵的列所代表的主效应的因子设计, 在这样的设计中因子各水平等重复出现且没有全混杂的因子. 这种设计因其在因子筛选试验中的优势而得到了越来越多的关注. 而填充设计是组合设计理论中一类重要的研究对象. 本文建立起了这两种不同设计之间的紧密联系. 提出了比较超饱和设计的几个准则, 讨论了它们的性质及与现有准则的关系, 给出了构造最优超饱和设计的一种组合方法, 即填充方法, 研究了所构造设计的性质并与现有的其他设计做了比较, 结果表明所构造的方法和新构造的设计具有优良的性质.     

CONSTRUCTION OF OPTIMAL BLOCKING SCHEMES FOR ROBUST PARAMETER DESIGNS

Robust parameter design (RPD) is an important issue in experimental designs. If all experimental runs cannot be performed under homogeneous conditions, blocking the units is effective. In this paper, w...     

Uniform supersaturated design and its construction

Supersaturated designs are factorial designs in which the number of main effects is greater than the number of experimental runs. In this paper, a discrete discrepancy is proposed as a measure of uniformity for supersaturated designs, and a lower bound of this discrepancy is obtained as a benchmark of design uniformity. A construction method for uniform supersaturated designs via resolvable balanced incomplete block designs is also presented along with the investigation of properties of the resulting designs. The construction method shows a strong link between these two different kinds of designs