One-step sparse estimates in nonconcave penalized likelihood models (2008)
Fan and Li propose a family of variable selection methods via penalized likelihood using concave penalty functions. The nonconcave penalized likelihood estimators enjoy the oracle properties, but...
Rejoinder: One-step sparse estimates in nonconcave penalized likelihood models (2008)
We would like to take this opportunity to thank the discussants for their thoughtful comments and encouragements on our work [arXiv:0808.1012]. The discussants raised a number of issues from...
Composite quantile regression and the oracle Model Selection Theory (2008)
Coefficient estimation and variable selection in multiple linear regression is routinely done in the (penalized) least squares (LS) framework. The concept of model selection oracle introduced by Fan...
On the "degrees of freedom" of the lasso (2007)
Zou, Hui, Hastie, Trevor, Tibshirani, Robert
We study the effective degrees of freedom of the lasso in the framework of Stein's unbiased risk estimation (SURE). We show that the number of nonzero coefficients is an unbiased estimate for the...
Structured variable selection in support vector machines (2007)
Wu, Seongho, Zou, Hui, Yuan, Ming
When applying the support vector machine (SVM) to high-dimensional classification problems, we often impose a sparse structure in the SVM to eliminate the influences of the irrelevant predictors. The...
The Crystal Order That Is Most Concrete: The Wittgenstein House (2005)
The Journal of Aesthetic Education - Volume 39, Number 3, Fall 2005
Automatic Bayes Carpentry Using Unlabeled Data In Semi-Supervised Classification (2004)
Hui Zou, Ji Zhu, Trevor Hastie
In semi-supervised classification one important question is how to use the enormous amount of unlabeled data to improve the classifier built on the labeled data. We point out that under certain...
A Method for Inferring Label Sampling Mechanisms In Semi-Supervised Learning (2004)
Saharon Rosset, Ji Zhu, Hui Zou, Trevor Hastie
We consider the situation in semi-supervised learning, where the "label sampling" mechanism stochastically depends on the true response (as well as potentially on the features). We suggest a method...
Sparse Principal Component Analysis (2004)
Hui Zou, Trevor Hastie, Robert Tibshirani
Principal component analysis (PCA) is widely used in data processing and dimensionality reduction. However, PCA su#ers from the fact that each principal component is a linear combination of all the...
Regression Shrinkage and Selection via the (2004)
We propose the elastic net, a new regression shrinkage and selection method. Real data and a simulation study show that the elastic net often outperforms the lasso, while it enjoys a similar sparsity...
Characterizing the Behavior of a Multi-Agent (2004)
In this paper, we extend the empirical study of a multi-agent search method (ERA) for solving a Constraint Satisfaction Problem (CSP) [15]. We compare the performance of this method to that of a...
Iterative improvement techniques for solving tight constraint satisfaction problems / (2003)
Thesis (M.S.)--University of Nebraska--Lincoln, 2003.
A Generator for Random Non-Binary Finite Constraint Satisfaction Problems (2002)
Hui Zou, Berthe Y. Choueiry, Amy M. Davis
The paper describes an implementation of a generator of random instances of non-binary constraint satisfaction problems that meets a given set of specifications. This is a continuation of the work we...
Amy M. Beckwith, Berthe Y. Choueiry, Hui Zou
We investigate how the performance of search for solving finite constraint satisfaction problems (CSPs) is a#ected by the level of interchangeability embedded in the problem. First, we describe a...
Combining Time Series Models for Forecasting (2002)
Statistical models (e.g., ARIMA models) have been commonly used in time series data analysis and forecasting. Typically one model is selected based on a selection criterion (e.g., AIC), hypothesis...
Combining Time Series Models for Forecasting (2001)
Statistical models (e.g., ARIMA models) have been commonly used in time series data analysis and forecasting. Typically one model is selected based on a selection criterion (e.g., AIC), hypothesis...
Distancing : seeking brightness and singularity of architectural form / (1998)
Thesis (M.S.)--University of Cincinnati, 1998.
Maintaining genome stability at the tandemly repeatedrDNA locus (1997)
Repeated sequences are found in virtually all eukaryotic and prokaryotic organisms. Recombination between these repeats may lead to deletion, inversion, or duplication of the intervening DNA as well...
Maintaining genome stability at the tandemly repeated rDNA locus / (1997)
Thesis (Ph. D.)--Columbia University, 1997.
Maintaining genome stability at the tandemly repeated rDNA locus [microform] / (1997)
Thesis (Ph. D.)--Columbia University, 1997.
Cellular mechanisms underlying myogenic reactivity in isolated arterioles /--by Hui Zou. (1995)
Thesis (Ph. D.)--Old Dominion University, 1995.
Visualization of Ca2+ entry through single stretch-activated cation channels
Zou, Hui, Lifshitz, Lawrence M., Tuft, Richard A., Fogarty, Kevin E., Singer, Joshua J.
Stretch-activated channels (SACs) have been found in smooth muscle and are thought to be involved in myogenic responses. Although SACs have been shown to be Ca2+ permeable when Ca2+ is the only...
Human Bub1 protects centromeric sister-chromatid cohesion through Shugoshin during mitosis
Tang, Zhanyun, Sun, Yuxiao, Harley, Sara E., Zou, Hui, Yu, Hongtao
Sister chromatids in mammalian cells remain attached mostly at their centromeres at metaphase because of the loss of cohesion along chromosome arms in prophase. Here, we report that Bub1 retains...
Genetic studies in yeast and Drosophila have uncovered a conserved acetyltransferase involved in sister-chromatid cohesion. Here, we described the two human orthologues, previously named EFO1/ESCO1...
Visualization of Ca2+ entry through single stretch-activated cation channels
Zou, Hui, Lifshitz, Lawrence M., Tuft, Richard A., Fogarty, Kevin E., Singer, Joshua J.
Stretch-activated channels (SACs) have been found in smooth muscle and are thought to be involved in myogenic responses. Although SACs have been shown to be Ca2+ permeable when Ca2+ is the only...
Human Bub1 protects centromeric sister-chromatid cohesion through Shugoshin during mitosis
Tang, Zhanyun, Sun, Yuxiao, Harley, Sara E., Zou, Hui, Yu, Hongtao
Sister chromatids in mammalian cells remain attached mostly at their centromeres at metaphase because of the loss of cohesion along chromosome arms in prophase. Here, we report that Bub1 retains...
Genetic studies in yeast and Drosophila have uncovered a conserved acetyltransferase involved in sister-chromatid cohesion. Here, we described the two human orthologues, previously named EFO1/ESCO1...
Regularization and variable selection via the elastic net
We propose the elastic net, a new regularization and variable selection method. Real world data and a simulation study show that the elastic net often outperforms the lasso, while enjoying a similar...
Hou, Fajian, Chu, Chih-Wen, Kong, Xiangduo, Yokomori, Kyoko, Zou, Hui
Proper sister chromatid cohesion is critical for maintaining genetic stability. San is a putative acetyltransferase that is important for sister chromatid cohesion in Drosophila melanogaster, but not...
Zou, Hui, Lifshitz, Lawrence M., Tuft, Richard A., Fogarty, Kevin E., Singer, Joshua J.
The feasibility of determining localized Ca2+ influx using only wide-field fluorescence images was explored by imaging (using fluo-3) single channel Ca2+ fluorescence transients (SCCaFTs), due to...
Zou, Hui, Ugur, Mehmet, Drummond, Robert M, Singer, Joshua J
Extracellular application of ATP generates two whole-cell currents in toad gastric smooth muscle cells: an immediate inward non-selective cation current (due to the activation of a P2X or P2Z-like...
Imaging Ca2+ Entering the Cytoplasm through a Single Opening of a Plasma Membrane Cation Channel
Zou, Hui, Lifshitz, Lawrence M., Tuft, Richard A., Fogarty, Kevin E., Singer, Joshua J.
Discrete localized fluorescence transients due to openings of a single plasma membrane Ca2+ permeable cation channel were recorded using wide-field digital imaging microscopy with fluo-3 as the Ca2+...
Regularized simultaneous model selection in multiple quantiles regression
Simultaneously estimating multiple conditional quantiles is often regarded as a more appropriate regression tool than the usual conditional mean regression for exploring the stochastic relationship...
A note on path-based variable selection in the penalized proportional hazards model
We propose an efficient and adaptive shrinkage method for variable selection in the Cox model. The method constructs a piecewise-linear regularization path connecting the maximum partial likelihood...