Zehua Chen

Extended Bayesian information criteria for model selection with large model spaces (2008)

Chen, Jiahua, Chen, Zehua

The ordinary Bayesian information criterion is too liberal for model selection when the model space is large. In this paper, we re-examine the Bayesian paradigm for model selection and propose an...

Anatomy of Escherichia coli {sigma}70 promoters (2007)

Shultzaberger, Ryan K., Chen, Zehua, Lewis, Karen A., Schneider, Thomas D.

Information theory was used to build a promoter model that accounts for the −10, the −35 and the uncertainty of the gap between them on a common scale. Helical face assignment indicated that base...

Comparative analysis of tandem T7-like promoter containing regions in enterobacterial genomes reveals a novel group of genetic islands (2006)

Chen, Zehua, Schneider, Thomas D.

Based on molecular information theory, 10 T7-like promoter models were built for the T7 group of phages and used to scan their host genomes and closely related genomes. 38 genomes were scanned and 12...

Anatomy of Escherichia coli {sigma}70 promoters (2006)

Shultzaberger, Ryan K., Chen, Zehua, Lewis, Karen A., Schneider, Thomas D.

Information theory was used to build a promoter model that accounts for the −10, the −35 and the uncertainty of the gap between them on a common scale. Helical face assignment indicated that base...

Anatomy of Escherichia coli {sigma}70 promoters (2006)

Shultzaberger, Ryan K., Chen, Zehua, Lewis, Karen A., Schneider, Thomas D.

Information theory was used to build a promoter model that accounts for the −10, the −35 and the uncertainty of the gap between them on a common scale. Helical face assignment indicated that base...

Information theory based T7-like promoter models: classification of bacteriophages and differential evolution of promoters and their polymerases (2005)

Chen, Zehua, Schneider, Thomas D.

Molecular information theory was used to create sequence logos and promoter models for eight phages of the T7 group: T7, ϕA1122, T3, ϕYeO3-12, SP6, K1-5, gh-1 and K11. When these models...

Adaptive ranked-set sampling with multiple concomitant variables: an effective way to observational economy (2002)

Chen, Zehua

The notion of ranked-set sampling (RSS) proposed by McIntyre provides an effective means of achieving observational economy in certain particular situations. The use of concomitant variables broadens...

Information theory based T7-like promoter models: classification of bacteriophages and differential evolution of promoters and their polymerases

Chen, Zehua, Schneider, Thomas D.

Molecular information theory was used to create sequence logos and promoter models for eight phages of the T7 group: T7, φA1122, T3, φYeO3-12, SP6, K1-5, gh-1 and K11. When these models were used...

Comparative analysis of tandem T7-like promoter containing regions in enterobacterial genomes reveals a novel group of genetic islands

Chen, Zehua, Schneider, Thomas D.

Based on molecular information theory, 10 T7-like promoter models were built for the T7 group of phages and used to scan their host genomes and closely related genomes. 38 genomes were scanned and 12...

Information theory based T7-like promoter models: classification of bacteriophages and differential evolution of promoters and their polymerases

Chen, Zehua, Schneider, Thomas D.

Molecular information theory was used to create sequence logos and promoter models for eight phages of the T7 group: T7, φA1122, T3, φYeO3-12, SP6, K1-5, gh-1 and K11. When these models were used...

Linkage Disequilibrium Mapping of Quantitative-Trait Loci by Selective Genotyping

Chen, Zehua, Zheng, Gang, Ghosh, Kaushik, Li, Zhaohai

The principles of linkage disequilibrium mapping of dichotomous diseases can be well applied to the mapping of quantitative-trait loci through the method of selective genotyping. In 1999, M. Slatkin...

Comparative analysis of tandem T7-like promoter containing regions in enterobacterial genomes reveals a novel group of genetic islands

Chen, Zehua, Schneider, Thomas D.

Based on molecular information theory, 10 T7-like promoter models were built for the T7 group of phages and used to scan their host genomes and closely related genomes. 38 genomes were scanned and 12...

Anatomy of Escherichia coli σ70 promoters

Shultzaberger, Ryan K., Chen, Zehua, Lewis, Karen A., Schneider, Thomas D.

Information theory was used to build a promoter model that accounts for the −10, the −35 and the uncertainty of the gap between them on a common scale. Helical face assignment indicated that base...

Discovery of Fur binding site clusters in Escherichia coli by information theory models

Chen, Zehua, Lewis, Karen A., Shultzaberger, Ryan K., Lyakhov, Ilya G., Zheng, Ming, Doan, Bernard, ...

Fur is a DNA binding protein that represses bacterial iron uptake systems. Eleven footprinted Escherichia coli Fur binding sites were used to create an initial information theory model of Fur...

On Expected Lengths of Predictive Intervals

Rahul Mukerjee, Zehua Chen

 We consider the problem of comparing predictive intervals for a future observation via their expected lengths at a given confidence level. A higher order asymptotic theory is developed. This...

Extended Bayesian information criteria for model selection with large model spaces

Zehua Chen

The ordinary Bayesian information criterion is too liberal for model selection when the model space is large. In this paper, we re-examine the Bayesian paradigm for model selection and propose an...

On the Ranked-Set Sampling M-Estimates for Symmetric Location Families

Xiaoyue Zhao, Zehua Chen

Asymptotic normality, asymptotic relative efficiency, M-estimates, optimal sampling design, ranked-set sampling, robustness,

Conditional Lp-quantiles and their application to the testing of symmetry in non-parametric regression

Chen, Zehua

The idea of using regression quantiles to test symmetry in a linear regression model is generalized to the non-parametric regression setting. The properties of the Lp-quantiles, defined through an...

Convergence rate of the best-r-point-average estimator for the maximizer of a nonparametric regression function

Bai, Zhidong, Chen, Zehua, Wu, Yaohua

The best-r-point-average (BRPA) estimator of the maximizer of a regression function, proposed in Changchien (in: M.T. Chao, P.E. Cheng (Eds.), Proceedings of the 1990 Taipei Symposium in Statistics,...

Multiple-Interval Mapping for Quantitative Trait Loci With a Spike in the Trait Distribution

Li, Wenyun, Chen, Zehua

For phenotypic distributions where many individuals share a common value—such as survival time following a pathogenic infection—a spike occurs at that common value. This spike affects...