Multivariate Statistics Theory and Applications : Proceedings of IX Tartu Conference on Multivariate Statistics and XX International Workshop on Matrices and Statistics

Preface; Organizing Committees; CONTENTS; Variable Selection and Post-Estimation of Regression Parameters Using Quasi-Likelihood Approach S. Fallahpour and S.E. Ahmed; 1. Introduction; 2. Improved Estimation and Variable Selection Strategies; 2.1. Pretest Estimations; 2.2. Absolute Penalty Estimator (APE); 3. Asymptotic Distribution Bias and Risk; 3.1. Bias and Risk Comparison; 4. Monte Carlo Simulation; 5. Conclusions; Acknowledgments; 6. Proofs; References; Maximum Likelihood Estimates for Markov-Additive Processes of Arrivals by Aggregated Data A.M. Andronov; 1. Introduction. - 2. Markov-Additive Process of arrivals3. Problem of parameter estimation; 4. Derivatives of the expectation; 4.1. Derivatives of with respect to; 4.2. Derivatives of with respect to; 5. Derivatives of the covariance matrix C; 5.1. Derivatives of C with respect to; 5.2. Derivatives of C with respect to; 6. Score function; 7. Parameter identification; 8. Numerical example; 9. Conclusions; Acknowledgement; References; A Simple and Efficient Method of Estimation of the Parameters of a Bivariate Birnbaum-Saunders Distribution Based on Type-II Censored Samples N. Balakrishnan and X. Zhu. - 1. Introduction2. Bivariate Birnbaum-Saunders Distribution and Some Properties; 3. Form of Data; 4. Estimation Based on Type-II Censored Samples; 5. Simulation Study; 6. Illustrative Data Analysis; 7. Concluding Remarks; References; Analysis of Contingent Valuation Data with Self-Selected Rounded WTP-Intervals Collected by Two-Steps Sampling Plans Yu. K. Belyaev and B. Kristrom; Introduction; Basic assumptions; Sampling design; Statistical model and corresponding log likelihood; Numerical experiment; Conclusion; Acknowledgements; References