Recently, Sakai proposed two methods for determining the topic set size n for a new test collection based on variance estimates from past data: the first method determines the minimum n to ensure high statistical power [22], while the second method determines the minimum n to ensure tight confidence invervals [23]. These methods are based on statistical techniques described by Nagata [15]. Whil...

143 This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/ by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. Statistical notes for clinical researchers: Two-way analysis of variance (ANOVA)-explor...

Roller bearing is one of the most widely used and critical elements in rotating machinery. In consequence, bearing fault diagnosis in machines, as well as to discriminate the different fault conditions have been a great interest. In this study, firstly, analytical model of a shaft-ball bearing system is developed. The shaft is assumed to be perfectly rigid and uniform, and supported by two radi...

The standard method of measuring one-way delay and delay variance in the Internet uses synchronous techniques which require clock synchronisation between source and destination. In this paper, we propose an asynchronous method of measuring one way delay and delay variance in the Internet, which does not require clock synchronisation between source and destination. The proposed asynchronous meth...

In this paper we use the Moore-Penrose inverse in the case of a close to singular and ill-conditioned, or singular variance-covariance matrix, in the classic Portfolio Selection Problem. In this way the possible singularity of the variance-covariance matrix is tackled in an efficient way so that the various application of the Problem to benefit from the numerical tractability of the Moore-Penro...

This report extends the technique of testing single variance components with generalized xed{level tests | in situations when nuisance parameters make exact testing impossible | to the more general way of testing hypotheses on linear forms of variance components. An extension of the deenition of a generalized test variable leads to a generalized xed{level test for arbitrary linear hypotheses on...

We introduce $k$-variance, a generalization of variance built on the machinery random bipartite matchings. $K$-variance measures expected cost matching two sets $k$ samples from distribution to each other, capturing local rather than global information about measure as increases; it is easily approximated stochastically using sampling and linear programming. In addition defining $k$-variance pr...

the purpose of this survey was to examine the relationship between packaging and food products consumer behaviors in refah chain stores in iran. this research in terms of goal is an application research and regarding data collection method, it is a survey-descriptive. one-way repeated measures analysis of variance was used to compare the impacts of packaging elements, visual and informational, ...