Ram C. Tiwari, Kaushik Ghosh, Ahmedin Jemal, Mark Hachey, Elizabeth Ward, Michael J. Thun, ...
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Mixture Cure Survival Models with Dependent Censoring (2005)
Li, Yi, Tiwari, Ram C., Guha, Subharup
A number of authors have studies the mixture survival model to analyze survival data with nonnegligible cure fractions. A key assumption made by these authors is the independence between the survival...
Mixture Cure Survival Models with Dependent Censoring (2005)
Li, Yi, Tiwari, Ram C., Guha, Subharup
A number of authors have studies the mixture survival model to analyze survival data with nonnegligible cure fractions. A key assumption made by these authors is the independence between the survival...
Mixture Cure Survival Models with Dependent Censoring (2005)
Li, Yi, Tiwari, Ram C., Guha, Subharup
A number of authors have studies the mixture survival model to analyze survival data with nonnegligible cure fractions. A key assumption made by these authors is the independence between the survival...
Mixture Cure Survival Models with Dependent Censoring (2005)
Li, Yi, Tiwari, Ram C., Guha, Subharup
A number of authors have studies the mixture survival model to analyze survival data with nonnegligible cure fractions. A key assumption made by these authors is the independence between the survival...
Convergence of Dirichlet Measures and the Interpretation of Their Parameter. (2002)
Sethuraman, Jayaram, Tiwari, Ram C.
The form of the Bayes estimate of the population mean with respect to a Dirichlet prior with parameter alpha has given rise to the interpretation that alpha(Chi) is the prior sample size....
Application of a Local Linear Autoregressive Model to BOD Time Series (1999)
In this paper, we analyze the biochemical oxygen demand data collected over two years from McDowell Creek, Charlotte, North Carolina, USA, by fitting an autoregressive model with timedependent...
Mixture cure survival models with dependent censoring
Yi Li, Ram C. Tiwari, Subharup Guha
The paper is motivated by cure detection among the prostate cancer patients in the National Institutes of Health surveillance epidemiology and end results programme, wherein the main end point (e.g....
Bayesian model selection for join point regression with application to age-adjusted cancer rates
Ram C. Tiwari, Kathleen A. Cronin, William Davis, Eric J. Feuer, Binbing Yu, Siddhartha Chib
The method of Bayesian model selection for join point regression models is developed. Given a set of "K"+1 join point models "M"0, "M"1, …, "M"" K" with 0, 1, …, "K" join points...
Convergence of Dirichlet Measures Arising in Context of Bayesian Analysis of Competing Risks Models,
Salinas-Torres, Victor H., De Bragança Pereira, Carlos A., Tiwari, Ram C.
In this paper, we study the weak convergence of Dirichlet measures on the class constituted by vectors of subprobability measures such that the sum of its components is a probability measure on a...
Outlier detection in the state space model
Chib, Siddhartha, Tiwari, Ram C.
Zellner (1975), Chaloner and Brant (1988), and Chaloner (1991) used the posterior distributions of the realized errors to define outliers in a linear model. The same concept is used here to define...
Tests of fit using spacings statistics with estimated parameters
Wells, Martin T., Jammalamadaka, Sreenivasa R., Tiwari, Ram C.
Let X1,..., Xn be a sequence of independent and identically distributed random variables with an unknown underlying continuous cumulative distribution function F. Relative to this unknown...
On the power-divergence statistic in sparse multinomial models requiring parameter estimation
Tiwari, Ram C., Wells, Martin T.
It will be shown that the power-divergence family of goodness-of-fit statistics for completely specified parameters and nuisance parameter, under the sparseness assumption, have the same asymptotic...
A new definition of the predictive likelihood
Chib, Siddhartha, Jammalamadaka, S. Rao, Tiwari, Ram C.
In this paper we present a widely applicable definition of the predictive likelihood based on estimators that are either sufficient or approximately sufficient. Under regularity conditions, this...
One- and two-sample match statistics
A mathc statistic considered by Khidr (1981) is interpreted in terms of crossings of the empirical and true distribution functions and a simpler alternate derivation of its distribution provided....
Binbing Yu, Lan Huang, Ram C. Tiwari, Eric J. Feuer, Karen A. Johnson
In the USA cancer as a whole is the second leading cause of death and a major burden to health care; thus medical progress against cancer is a major public health goal. There are many individual...
Semiparametric Bayesian approaches to joinpoint regression for population-based cancer survival data
Ghosh, Pulak, Huang, Lan, Yu, Binbing, Tiwari, Ram C.
According to the American Cancer Society report (1999), cancer surpasses heart disease as the leading cause of death in the United States of America (USA) for people of age less than 85. Thus,...