#### Filter Results:

- Full text PDF available (8)

#### Publication Year

2000

2014

- This year (0)
- Last 5 years (1)
- Last 10 years (5)

#### Publication Type

#### Co-author

#### Journals and Conferences

#### Key Phrases

#### Method

#### Organism

Learn More

- Yifan Huang, Haiyan Xu, Violeta Calian, Jason C. Hsu
- Bioinformatics
- 2006

UNLABELLED
Permutation test is a popular technique for testing a hypothesis of no effect, when the distribution of the test statistic is unknown. To test the equality of two means, a permutation test might use a test statistic which is the difference of the two sample means in the univariate case. In the multivariate case, it might use a test statistic… (More)

- Thorunn Rafnar, Steinunn Thorlacius, +7 authors Snorri S Thorgeirsson
- Nature reviews. Cancer
- 2004

- Thomas Bataillon, Thomas Mailund, +5 authors Mikkel H Schierup
- European journal of human genetics : EJHG
- 2006

Characterizing the extent of linkage disequilibrium (LD) in the genome is a pre-requisite for association mapping studies. Patterns of LD also contain information about the past demography of populations. In this study, we focus on the Icelandic population where LD was investigated in 12 regions of approximately 15 cM using regularly spaced microsatellite… (More)

- Violeta Calian, Dongmei Li, Jason C Hsu
- Biometrical journal. Biometrische Zeitschrift
- 2008

This article discusses specific assumptions necessary for permutation multiple tests to control the Familywise Error Rate (FWER). At issue is that, in comparing parameters of the marginal distributions of two sets of multivariate observations, validity of permutation testing is affected by all the parameters in the joint distributions of the observations.… (More)

Permutation test is a popular technique for testing a hypothesis of no effect, when the distribution of the test statistic is unknown. To test the equality of two means, a permutation test might use a test statistic which is the difference of the two sample means in the univariate case. In the multivariate case, it might use a test statistic which is the… (More)

- V Calian, G Stoenescu
- 2000

An extension of the non-local regularization scheme is formulated in the Sp(2) symmetric Lagrangian BRST quantization framework. It generates a systematic treatment of the anomalous quantum master equations and allows to subtract the divergences as well as to calculate genuine higher loop BRST and anti BRST anomalies.

- Violeta Calian, Jason C. Hsu
- Bioinformatics
- 2010

In current practice, such as GWAS (genome-wide association studies), permutation is often applied to multiple testing for association between large number of features [e.g. single nucleotide polymorphisms (SNPs)] and phenotypes (Hahn et al., 2008). Inferring that there is a difference between the phenotypic groups X and Y in some of the features is not very… (More)

- V. Calian, Niels Bohr
- 2000

The BRST formulation is used in order to derive the existence criterion for classical bi-Hamiltonian systems, based on non-anomalous deformation of the gauge-fixing structure. The recursion operator is then used to provide the entire hierarchy of integrable models associated to the original BRST and anti-BRST charges.

- V. Calian
- 2008

The quantum BRST anti BRST operators are explicitly derived and the consequences related to correlation functions are investigated. The connection with the standard formalism and the loopwise expansions for quantum operators and anomalies in Sp(2) approach are analyzed .

- V Calian, G Stefansson, L P Folkow, A S Blix
- 2009

We model two time and space scales discrete observations by using a unique continuous diffusion process with time dependent coefficient. We define new parameters for the large scale model as functions of the small scale distribution cumulants. We use the non-uniform distribution of the observation time intervals to obtain consistent and unbiased estimators… (More)