Recent technical reports and working papers are posted here for comment.

No. Date Author(s) Title / Link to Document
4522019-01AJ vd Merwe, PCN Groenewald, MR Sjölander, JH MeyerOutlier Detection in a Random Effects Model
4512017-10AJ vd Merwe, PCN Groenewald, MR SjölanderA Bayesian-Frequentists Approach for detecting Outliers in a One-way Variance Components Model
4502017-02J Harvey, AJ vd MerweA Bayesian Approach to Inference on the Variance of Lognormal Data
449 2016-01 R van Zyl, AJ vd Merwe Bayesian Results for the Process Capability Indices Cpl, Cpu and Cpk and Control Chart for the Cpk Index
448 2016-01 R van Zyl, AJ vd Merwe A Bayesian Procedure for the Piecewise Exponential Model
447 2016-01 R van Zyl, AJ vd Merwe Bayesian Control Charts for the Two-parameter Exponential Distribution if the Location Parameter Can Take on Any Value Between Minus Infinity and Plus Infinity
446 2015-11 R van Zyl, AJ vd Merwe Bayesian Control Charts for the Two-parameter Exponential Distribution
445 2015-07 R van Zyl, AJ vd Merwe A Bayesian Control Chart for a One-sided Upper Tolerance Limit for the Two-parameter Exponential Distribution
444 2015-06 R van Zyl, AJ vd Merwe A Bayesian Control Chart for a One-sided Upper Tolerance Limit for the Normal Population
443 2015-06 R van Zyl, AJ vd Merwe A Bayesian Control Chart for a Common Standardised Normal Mean
442 2015-03 MJ von Maltitz, AJ vd Merwe Bayesian Estimation of a Robust Alternative to the Probit Model for Classification and Prediction
441 2015-03 MJ von Maltitz, AJ vd Merwe A Robust Model for Use in Sequential Regression Multiple Imputation
440 2015-03 J Nienkemper-Swanepoel, MJ von Maltitz Multiple Imputation using Regularised Iterative Multiple Correspondence Analysis
439 2015-01 R van Zyl, AJ vd Merwe Phase I and Phase II - Control Charts for the Variance and Generalised Variance
438 2015-01 L Raubenheimer, AJ vd Merwe Bayesian process control for the p-chart
437 2014-05 T Strauss, MJ von Maltitz Statistical Classification of Languages: Generalising Ward's Method for Use with Manhattan Distances
436 2014-04 R van Zyl, AJ vd Merwe A Bayesian Control Chart for the Coefficient of Variation in the Case of Pooled Samples
435 2014-04 J Harvey, AJ vd Merwe Analysis of Unbalanced Occupational Exposure Data Using a Bayesian Random Effects Model
434 2014-04 L Raubenheimer, AJ vd Merwe Bayesian control chart for nonconformities
433 2014-01 DA Burger, R Schall A Bayesian Non-Linear Mixed Effects Regression Model for the Characterisation of Early Bactericidal Activity of Tuberculosis Drugs
432 2014-01 L Raubenheimer, AJ vd Merwe Bayes Factors for Grouped Data
431 2013-08 A Verster, DJ de Waal, S vd Merwe Selecting an optimum threshold with the Kullback-Leibler deviance measure
430 2013-06 S vd Merwe A Method for Testing Models with Unknown Parameters
429 2012-12 L Raubenheimer, AJ vd Merwe Estimation for Binomial Proportions from Pooled Samples Using an Objective Prior
428 2012-12 J Harvey, AJ vd Merwe Modelling Occupational Exposure using a Random Effects Model: A Bayesian Approach
427 2012-12 S vd Merwe, DJ de Waal Bayesian Fitting of Dirichlet Type I and II Distributions
426 2012-08 JM van Zyl, S vd< Merwe An empirical study to compare citation statistics between subject fields
425 2012-07 JM van Zyl The state of research output in South Africa with respect to economy size and population
424 2012-02 A Verster, DJ de Waal Modelling the SOI volatility through the Wishart distribution
423 2011-11 J Harvey, AJ vd Merwe Bayesian Confidence Intervals for Means and Variances of Lognormal and Bivariate Lognormal Distributions
422 2011-11 E du Plessis, AJ vd Merwe Estimation of a Common Mean in Biological Research - Bayesian Approach
421 2011-09 JM van Zyl Improved regression-type estimation of the index of a stable distribution using the characteristic function
420 2011-09 L Raubenheimer, AJ vd Merwe Bayesian Estimation for Linear Functions of Poisson Rates
419 2011-05 SS Britz, MJ von Maltitz Application of the Hungarian Algorithm in Baseball Team Selection and Assignment
418 2011-05 DW Bester, MJ von Maltitz Introducing Momentum to the Elo rating System
417 2011-04 L Raubenheimer, AJ vd Merwe Bayesian Inferences and Nonlinear Functions of Poisson Rates
416 2011-04 A Verster, DJ de Waal Investigating the Generalized t-distribution
415 2011-03 DJ de Waal, A Verster, R Fraser, C Marais Investigating tail dependence for the Bivariate Generalized Gamma
414 2011-02 C Sigauke, D Chikobvu Prediction of daily peak electricity demand in South Africa using volatility forecasting models
413 2010-12 R Chifurira, D Chikobvu Predicting Rainfall and Drought using the Southern Oscillation Index in Drought Prone Zimbabwe
412 2010-12 K Chinhamu, D Chikobvu Random walk or mean reversion? Empirical evidence from the Crude oil price market
411 2010-12 M vd Rijst, AJ vd Merwe, J Hugo Performance of Confidence Intervals on the Among Group Variance in the Unbalance One-Factor Random Effects Model
410 2010-10 C Sigauke, D Chikobvu Daily Peak Electricity Load Forecasting in South Africa using a Multivariate Non-Parametric Regression Approach
409 2010-10 JM van Zyl, R Schall Parameter estimation through weighted least-squares rankregression with specific reference to the Weibull and Gumbel distributions
408 2010-10 J Harvey, PCN Groenewald, AJ vd Merwe Bayesian Confidence Intervals for the Mean of a Lognormal Distribution: A Comparison with the MOVER and
Generalised Confidence Interval Procedures
407 2010-09 A Verster, DJ de Waal, R Schall, C Prins A truncated Pareto model to estimate the under recovery of large diamonds
406 2010-09 DJ de Waal, A Verster Modelling high river flows and the Southern Oscillation Index jointly
405 2010-08 SJ Bekker, JH Pretorius, DJ de Waal Modelling Inflows into the Gariep Dam
404 2010-07 L vd Merwe, A Wilkinson Mapping the Field of Statistics Education Research in Search of Scholarship
403 2010-06 JM van Zyl Application of the Kolmogorov-Smirnov test to estimate the threshold when estimation the extreme value index
402 2010-05 A Verster, DJ de Waal A Method for Choosing an Optimum Threshold if the Underlying Distribution is Generalised Burr-Gamma
401 2009-12 L Raubenheimer, AJ vd Merwe Bayesian Estimation of Functions of Binomial Rates
400 2009-12 D Chikobvu, AJ vd Merwe, JA De Beer A Bayesian approach for comparing the relative returns of securities using the reciprocal of the coefficient of variation
399 2009-11 JM van Zyl A Note on Box-Cox Quantile Regression Estimation of the Parameters of the Generalised Pareto Distribution
398 2009-11 J Harvey, AJ vd Merwe Bayesian Confidence Intervals for the Ratio of Means of Lognormal Data with Zeros
397 2009-11 A Verster and DJ de Waal Approximating the Generalised Burr-Gamma with a Generalized Pareto-Type of Distribution
396 2009-10 Miscellaneous Collection of Papers in commemoration of Prof De Waal’s 34 years of service as the Head of Department of Mathematical Statistics
395 2009-11 D Chikobvu, AJ vd Merwe A Process Capability Index for Averages of Observations from New Batches in the Case of the Balanced Random Effects Model with Three Variance Components
394 2009-03 A Verster, DJ de Waal Modelling Risk on Losses due to Spillage for Hydro Power Generation
393 2009-02 B Senatsi, A Verster Investigating nonparametric methods and tests
392 2009-02 TD Mokete, MJ von Maltitz, S vd Merwe Determinants of Private Investment in South Africa: Investor Confidence Index Approach
391 2009-02 R Schall, A Ring, L Endrenyi Residuals and Outliers in Replicate Design Crossover Studies
390 2008-12 AJ vd Merwe, D Chikobvu Process Capability Indices for the Balanced Random Effects Model

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