| Lubbe, S. and Brito, P. |
Symbolic Data Analysis and Visualisation with Principal Component Analysis Biplots |
SASA: 66th Annual conference of the South African Statistical Association, 24 – 28 November 2025, Vanderbijlpark, South Africa |
| Masoumifard, K. van der Westhuizen, S. and Lubbe, S. |
Random Forest Models for Compositional Data |
SASA: 66th Annual conference of the South African Statistical Association, 24 – 28 November 2025, Vanderbijlpark, South Africa |
| Sebatjane, P., Lubbe, S. and le Roux, N.J. |
Calibration of compositional biplot axes |
SASA: 66th Annual conference of the South African Statistical Association, 24 – 28 November 2025, Vanderbijlpark, South Africa |
| Lubbe, S. and Brito, P. |
Principal Component Analysis Biplots for Interval Scaled Data |
IX Latin American Conference on Statistical Computing LACSC 2025, 4 – 7 November 2025, Valparaíso, Chile |
| Masoumifard, K., van der Westhuizen, S. and Lubbe, S. |
Dirichlet-Random Forest for Predicting Compositional Data |
DSSV: Data Science, Statistics and Visualisation, 7 – 9 July 2025, Kruger National Park, South Africa |
| Sebatjane, P., Lubbe, S. and le Roux, N.J. |
Visualisation of Compositional Data Using Biplots |
DSSV: Data Science, Statistics and Visualisation, 7 – 9 July 2025, Kruger National Park, South Africa |
| Lubbe, S. |
A Collection of Biplots for Classification |
International Association of Statistical Computing Asian Regional Section Conference, 8 – 14 December 2024, Taipei, Taiwan |
| Buys, R., Sandilands, D., Lubbe, S. and van der Merwe, C. |
bipl5: An R package for reactive calibrated axes biplots |
SASA: 65th Annual conference of the South African Statistical Association, 18 - 22 November 2024, Stellenbosch |
| Lubbe, S. |
Timeseries PCA biplots |
SASA: 65th Annual conference of the South African Statistical Association, 18 - 22 November 2024, Stellenbosch |
| Sebatjane, P., Lubbe, S. and le Roux, N.J. |
Compositional biplot approaches |
SASA: 65th Annual conference of the South African Statistical Association, 18 - 22 November 2024, Stellenbosch |
| Ganey, R. and Lubbe, S. |
A Canonical Variate Analysis Biplot based on the Generalised Singular Value Decomposition |
ICORS meets DSSV 2024, 29 July - 1 August 2024, Washington, USA |
| Lubbe, S. |
A Collection of Biplots for Classification |
IFCS: Conference of the International Federation of Classification Society, 15 – 19 July 2024, San Jose, Costa Rica |
| Ganey, R and Lubbe, S. |
A Canonical Variate Analysis Biplot based on the Generalized Singular Value Decomposition |
SASA: 64th Annual conference of the South African Statistical Association, 29 November – 1 December 2023, Durban, South Africa |
| Lubbe, S., le Roux, N.J., Nienkemper-Swanepoel, J., Ganey, R., Adams, Z. and Buys, R. |
BiplotEZ R package for EZier biplots |
SASA: 64th Annual conference of the South African Statistical Association, 29 November – 1 December 2023, Durban, South Africa |
| Manefeldt, P.C., Lamont, M. and Lubbe, S. |
Extending Random Forest Biplots through Manifold Exploration |
SASA: 64th Annual conference of the South African Statistical Association, 29 November – 1 December 2023, Durban, South Africa |
| Nienkemper-Swanepoel, J., le Roux, N. and Lubbe, S. |
GPAbin MCA biplots to recover categorical response patterns after multiple imputation |
SASA: 64th Annual conference of the South African Statistical Association, 29 November – 1 December 2023, Durban, South Africa |
| Sebatjane, P., Lubbe, S. and le Roux, N.J. |
Visualization of compositional data |
SASA: 64th Annual conference of the South African Statistical Association, 29 November – 1 December 2023, Durban, South Africa |
| van der Westhuizen, S., Heuvelink, G. and Lubbe, S. |
Biplots for understanding machine learning predictions in digital soil mapping |
SASA: 64th Annual conference of the South African Statistical Association, 29 November – 1 December 2023, Durban, South Africa |
| Lubbe, S. |
Multi-dimensional Visualisations with biplotEZ |
Southern Africa Mathematical Sciences Association conference, 21 – 24 November 2023, Pretoria, South Africa |
| Lubbe, S. |
the BIplot Zone for Exploring Truths in mixed scaled measurements |
CARME: Correspondence Analysis and Related Methods, 26 – 29 September 2023, Bonn, Germany |
| Ganey, R. and Lubbe, S. |
High-dimensional LDA biplot through the GSVD: A case where p > N |
COMPSTAT2023, 22-25 August 2023, London, UK |
| Nienkemper-Swanepoel, J., le Roux, N.J. and Lubbe, S. |
Investigation into the impact of (un)congenial multiple imputation approaches on GPAbin biplots |
COMPSTAT2023, 22-25 August 2023, London, UK |
| Le Roux, N.J. and Lubbe, S. |
Predictive biplots for individual differences scaling (INDSCAL) models |
DSSV: Data Science, Statistics and Visualisation Conference, 5 – 7 July 2023, University of Antwerpen |
| Manefeldt, P., Lamont, M. and Lubbe, S. |
Visualising interpretability of random forest models |
DSSV: Data Science, Statistics and Visualisation Conference, 5 – 7 July 2023, University of Antwerpen |
| Adams, Z., Nienkemper-Swanepoel, J., le Roux, N.J. and Lubbe, S. |
Exploring sentiment contained in COVID-19 related Tweets with embedded word MCA biplots |
SASA: 63rd Annual conference of the South African Statistical Association, 30 November - 2 December 2022, George |
| Lubbe, S. and le Roux, N.J. |
Biplots for individual differences scaling models |
SASA: 63rd Annual conference of the South African Statistical Association, 30 November - 2 December 2022, George |
| Lubbe, S. |
Visualising and exploring multi-dimensional sensory data |
Sensometrics conference, 15 – 17 November 2022, online |
| Mostert, A.G., Coetzer, R.L.J. and Lubbe, S. |
Variable contributions based on pairwise PCA |
18th International Conference of Computational Methods in Sciences and Engineering, 26-29 October 2022. Heraklion, Crete, Greece |
| Nienkemper-Swanepoel, J., le Roux, N.J. and Lubbe, S. |
Sensitivity analysis of the choice of multiple imputation approach on categorical GPAbin biplots |
COMPSTAT2022: 24th International Conference on Computational Statistics, 23 - 26 August 2022, University of Bologna, Italy |
| Adams, Z., Nienkemper-Swanepoel, J., le Roux, N.J. and Lubbe, S. |
Embedded word MCA biplots for sentiment visualisation: Application to COVID-19 related Tweets |
IFCS: 17th Conference of the International Federation of Classification Societies, 19 - 23 July 2022, Porto, Portugal |
| Nienkemper-Swanepoel, N.J., Lubbe, S. and le Roux, N.J. |
Extending GPAbin to visualise missing multivariate continuous data |
SASA: 62nd Annual Conference of the South African Statistical Association, 1 – 3 December 2021, Stellenbosch |
| Van der Merwe, C.J., Sandilands, D. and Lubbe, S. |
Exploding biplots with density axes in Plotly |
SASA: 62nd Annual Conference of the South African Statistical Association, 1 – 3 December 2021, Stellenbosch |
| Lubbe, S., le Roux, N.J. Nienkemper, J. and van der Merwe, C.J. |
Correspondence analysis and related biplot visualisation to aid analyses of categorical data containing missing values |
WSC: 63rd World Statistics Congress, 11 – 16 July 2021, online |
| Lubbe, S. and Filzmoser, P.J. |
Comparison of Zero Replacement Strategies for Compositional Data with Large Numbers of Zeros |
DSSV: Data Science, Statistics and Visualisation Conference, 29 – 31 July 2020, online |
| Lubbe, S. and le Roux, N.J. |
Analysis and Visualisation of spectroscopy data |
DSSV: Data Science, Statistics and Visualisation Conference, 29 – 31 July 2020, online |
| Nienkemper-Swanepoel, J., le Roux, N.J. and Lubbe, S. |
Missing data: GPAbin biplots |
DSSV: Data Science, Statistics and Visualisation Conference, 29 – 31 July 2020, online |
| Lubbe, S., Daniels, A.. Opara, L., Niewoudt, H. and le Roux N.J. |
A novel application of survival and competing risk models in agriculture |
SASA: 61st Annual Conference of the South African Statistical Association, 25 – 29 November 2019. Port Elizabeth |
| Nienkemper-Swanepoel, J., le Roux, N.J. and Lubbe, S. |
Extended applications of GPAbin biplots |
SASA: 61st Annual Conference of the South African Statistical Association, 25 – 29 November 2019. Port Elizabeth |
| Ganey, R. and Lubbe, S. |
Visualising multivariate data in a principal surface biplot |
IFCS: 16th biennial conference of the International Federation of Classification Societies, 26 – 29 August 2019, Thessaloniki, Greece |
| Le Roux, N.J., Gower, J.C. and Lubbe, S. |
Properties of individual differences scaling and its interpretation |
IFCS: 16th biennial conference of the International Federation of Classification Societies, 26 – 29 August 2019, Thessaloniki, Greece |
| Lubbe, S. |
Functional linear discriminant analysis for several functions and more than two groups |
IFCS: 16th biennial conference of the International Federation of Classification Societies, 26 – 29 August 2019, Thessaloniki, Greece |
| Nienkemper-Swanepoel, J., le Roux, N.J. and Lubbe, S. |
A simulation study for the identification of missing data mechanisms using visualisations |
IFCS: 16th biennial conference of the International Federation of Classification Societies, 26 – 29 August 2019, Thessaloniki, Greece |
| Le Roux, N.J. Nienkemper-Swanepoel, J. and Lubbe, S. |
GPAbin for data visualization in the presence of missing observations |
CoDaWork 2019, 3 – 8 June 2019, Terrassa, Spain |
| Ganey, R. and Lubbe, S |
Applications of the principal surface biplot |
CARME: Correspondence Analysis and Related Methods Conference, 4 – 6 February 2019, Stellenbosch |
| Nienkemper-Swanepoel, J. le Roux, N.J. and Lubbe, S. |
To impute or not to impute categorical data: application of multiple correspondence analysis |
CARME: Correspondence Analysis and Related Methods Conference, 4 – 6 February 2019, Stellenbosch |
| Rowan, A. and Lubbe, S. |
Unravelling black box machine learning technique predictions using biplots |
CARME: Correspondence Analysis and Related Methods Conference, 4 – 6 February 2019, Stellenbosch |
| Lubbe, S. |
Comparison of Unfolding and Correspondence Analysis |
SASA: Annual South African Statistical Association Conference, 26 – 29 November 2018, Johannesburg |
| Nienkemper-Swanepoel, J., le Roux, N.J. and Lubbe, S. |
Visualisations for identifying missing data mechanisms |
SASA: Annual South African Statistical Association Conference, 26 – 29 November 2018, Johannesburg |
| Lubbe, S. |
A naïve visualisation of Data Science |
COMPSTAT2018, 28-31 August 2018, Iaşi, Romania |
| Lubbe, S. |
Visualisation as a tool to understand the sights and sounds of data |
Conference BRICS on Mathematics, 23 – 27 July 2018, Foz do Iguaçu, Brazil |
| Ganey, R. and Lubbe, S. |
A Visualizing Multivariate data using Principal Surfaces Biplots |
DSSV: Data Science, Statistics and Visualisation conference, 9 – 11 July 2018, Vienna, Austria |
| Le Roux, N.J., Gower, J.C. and Lubbe, S. |
Can within-group information be used to supplement visual representations of two or three group Canonical Variate Analyses |
DSSV: Data Science, Statistics and Visualisation conference, 9 – 11 July 2018, Vienna, Austria |
| Ganey, R. and Lubbe, S. |
A Biplot based on a Principal Surface |
5th European Conference on Data Analysis, 4 – 6 July 2018, Paderborn, Germany |
| Nienkemper-Swanepoel, J., le Roux, N.J. and Lubbe, S. |
Visualising incomplete data with subset Multiple Correspondence Analysis |
5th European Conference on Data Analysis, 4 – 6 July 2018, Paderborn, Germany |
| Rowen, A., Lubbe, S, le Roux, N.J. and Schoonees, P. |
Unravelling black box machine learning technique predictions using biplots |
5th European Conference on Data Analysis, 4 – 6 July 2018, Paderborn, Germany |
| Le Roux, N.J., Gower, J.C. and Lubbe, S. |
Biplot visualisations of interactions in a bilinear model having a qualitative depended variable |
SASA: Annual South African Statistical Association Conference, 27 – 30 November 2017, Bloemfontein |
| Nienkemper-Swanepoel, J., le Roux, N.J. and Lubbe, S. |
Competing approaches to the visualisation of incomplete categorical data sets |
SASA: Annual South African Statistical Association Conference, 27 – 30 November 2017, Bloemfontein |
| Ganey, R. and Lubbe, S. |
Biplots based on Principal Surfaces |
IFCS: International Federation of Classification Societies Conference, 8 – 10 August 2017, Tokyo, Japan |
| Lubbe, S. |
A comparison of different applications of functional linear discriminant analysis |
IFCS: International Federation of Classification Societies Conference, 8 – 10 August 2017, Tokyo, Japan |
| Nienkemper-Swanepoel, J., le Roux, N.J. and Lubbe, S. |
Challenges in visualising and imputing missing categorical data |
IFCS: International Federation of Classification Societies Conference, 8 – 10 August 2017, Tokyo, Japan |
| Lubbe, S., Nicol, M.P. and Zar, H.J. |
Functional Discriminant Analysis for Multivariate Longitudinal Data |
WSC: World Statistics Congress, 16 – 21 July 2017, Marrakesh, Morocco |
| Lubbe, S. |
Visualisations associated with bootstrapping cluster analysis |
DSSV: Data Science, Statistics and Visualisation conference, 12 – 14 July 2017, Lisbon, Portugal |
| Nienkemper-Swanepoel, J., le Roux, N.J. and Lubbe, S. |
The virtues and pitfalls of the visualisation of incomplete categorical data |
DSSV: Data Science, Statistics and Visualisation conference, 12 – 14 July 2017, Lisbon, Portugal |
| Ganey, R. and Lubbe, S. |
Poster: Principal surfaces |
SASA: Annual South African Statistical Association Conference, 29 November – 1 December 2016, Cape Town |
| Joselson, N. and Lubbe, S. |
Poster: Uses of Principal Components in Generalized Linear Modeling |
SASA: Annual South African Statistical Association Conference, 29 November – 1 December 2016, Cape Town |
| Lubbe, S., Leclezio, L. and de Vries, P. |
Multivariate analysis to find natural clusters of Tuberous Sclerosis Complex Associated Neuropsychiatric Disorders |
SASA: Annual South African Statistical Association Conference, 29 November – 1 December 2016, Cape Town |
| Mostert, A., Coetzer, R. and Lubbe, S. |
Evaluation of fault diagnosis techniques in multivariate statistical process control |
SASA: Annual South African Statistical Association Conference, 29 November – 1 December 2016, Cape Town |
| Nienkemper-Swanepoel, J., le Roux, N.J. and Lubbe, S. |
Multidimensional graphical comparisons of imputation methods for missing values in categorical data sets |
SASA: Annual South African Statistical Association Conference, 29 November – 1 December 2016, Cape Town |
| Le Roux, N.J., Lubbe, S. and Gower, J.C. |
Consequences of combining Fisher Optimal Scores with bi-additive models |
COMPSTAT2016, 23- 26 August 2016, Oviedo, Spain |
| Nienkemper-Swanepoel, J., le Roux, N.J. and Lubbe, S. |
Visualisations of multiple imputations using Generalized Orthogonal Procrustes Analysis |
COMPSTAT2016, 23- 26 August 2016, Oviedo, Spain |
| Lubbe, S., Claassen, S., du Toit, E., Botha, G., Lennard, K., Zar, H.J. and Nicol, M.P. |
A longitudinal log ratio biplot based on functional data analysis modelling |
International Conference on Information Complexity and Statistical Modeling in High Dimensions with Applications, 18 – 21 May 2016, Nevshir, Turkey |
| Lubbe, S., le Roux, N.J. and Gower, J.C. |
Fisher Optimal Scores for visualization in categorical data |
SASA: Annual South African Statistical Association Conference, 30 November – 3 December 2015, Pretoria |
| Nienkemper-Swanepoel, J., le Roux, N.J., Lubbe, S. and von Maltiz, M.J. |
Generalized Orthogonal Procrustes Analysis for the comparison of Multiple Imputed data sets |
SASA: Annual South African Statistical Association Conference, 30 November – 3 December 2015, Pretoria |
| Claassen, S., du Toit, E., Botha, G., Lubbe, S., Zar, H.J. and Nicol, M.P. |
Poster: Dynamics of the nasopharyngeal microbiome preceding and at the onset of pneumonia in infants: a pilot study |
H3Africa Conference, 29 September 2015, Washington D.C. |
| Gower, J.C., le Roux, N.J. and Lubbe, S. |
Fisher Optimal Scores revisited |
CARME: Correspondence Analysis and Related Methods Conference, 21 – 23 September 2015, Naples, Italy |
| Lubbe, S. |
Including Covariates in Linear discriminant analysis |
CARME: Correspondence Analysis and Related Methods Conference, 21 – 23 September 2015, Naples, Italy |
| Pierre Bernard, T.C. and Lubbe, S. |
A graphical overview of social inequality in South Africa |
WSC: 60th ISI World Statistics Congress, 26-31 July 2015, Rio de Jeneiro, Brazil |
| Lubbe, S., Dube, F.S., Nicol, M.P. and Zar, H.J. |
Functional Data Analysis for the Investigation of Longitudinal Response Patterns in Health Care |
IFCS: Conference of the International Federation of Classification Societies, 6-8 July 2015, Bologna, Italy |
| Nienkemper-Swanepoel, J, Lubbe, S., le Roux, N.J. Smith, E., Zar, H.J. and Nicol, M.P. |
Biplot-based visualisations to explore relationships between pneumonia and nasopharyngeal pathogens |
IFCS: Conference of the International Federation of Classification Societies, 6-8 July 2015, Bologna, Italy |
| Lubbe, S. and Williams, D. |
Visualising three-way arrays: An outer product rank perspective |
Three-way methods In Chemistry And Psychology Conference, 31 May – 5 June 2015, Val di Zoldo, Belluno, Italy |
| Lubbe, S. and Essomba, R.F. |
Comparison of Basis Function Selection and Model Fitting for Functional Regression Models |
SASA: Annual South African Statistical Association Conference, 4-6 November 2014, Grahamstown |
| Lubbe, S. |
A Quadratic Discriminant Analysis Biplot |
COMPSTAT 2014, 18-22 August 2014, Genève, Switzerland |
| Brown, J.C., Lubbe, S., Lambert, M., van Mechelen, W. and Verhagen, E. |
Poster: The association between knowledge, perceptions, education and injury-preventing behaviour in rubgy union players |
IOC World Conference Prevention of Injury and Illness in Sport, 10-12 April 2014, Monaco |
| Dube, F.S., Kaba, M., Ah Tow, L., Africa, S., Lubbe, S., Zar, H.J. and Nicol, M.P. |
Poster: Microbiology of the Nasopharynx in Children Hospitalized with Suspected Pulmonary Tuberculosis |
16th International Congress on Infectious Diseases, 2-5 April 2014, Cape Town |
| Essomba, R.F. and Lubbe, S. |
Applications of Functional Data Analysis |
SASA: Annual South African Statistical Association Conference, 6-8 November 2013, Polokwane |
| Le Roux, N.J., Lubbe, S. and Gower, J.C. |
The Analysis of Distance of Grouped Data with Categorical Variables: Categorical Canonical Variate Analysis Biplots |
SASA: Annual South African Statistical Association Conference, 6-8 November 2013, Polokwane |
| Lubbe, S. |
Application of Genetic Algorithms to Unidimensional Scaling |
SASA: Annual South African Statistical Association Conference, 6-8 November 2013, Polokwane |
| Oyedele, O.V.F. and Lubbe, S. |
Poster: Partial Least Squares Biplots for Generalised Linear Models |
SASA: Annual South African Statistical Association Conference, 6-8 November 2013, Polokwane |
| Pierre Bernard, T. and Lubbe, S. |
South African Household Survey Data: An Unbiased View on Narrowing the Gap Between Racial Groups |
SASA: Annual South African Statistical Association Conference, 6-8 November 2013, Polokwane |
| Oyedele O.V.F. and Lubbe S. |
The Construction of a Partial Least Squares Biplot |
WSC: 59th ISI World Statistics Congress, 25-30 August 2013, Hong Kong, China |
| Timm, A. and Gardner-Lubbe S. |
The MDS-GUI: A Graphical User Interface for Comprehensive Multidimensional Scaling Applications |
WSC: 59th ISI World Statistics Congress, 25-30 August 2013, Hong Kong, China |
| Williams, D. and Lubbe, S. |
Common Components to Construct Biplots for Longitudinal Data |
WSC: 59th ISI World Statistics Congress, 25-30 August 2013, Hong Kong, China |
| Oyedele, O.V.F. and Lubbe, S. |
PLS biplots: Another graphical tool for multivariate data |
IFCS: Conference of the International Federation of Classification Societies, 15-17 July 2013, Tilburg, The Netherlands |
| Le Roux, N.J., Lubbe, S. and Gower, J.C. |
Biplots constructed from Distance matrices |
SASA: Annual South African Statistical Association Conference, 7-9 November 2012, Port Elizabeth |
| Lubbe, S. and Timm, A. |
The MDS-GUI: A graphical user interface for comprehensive multidimensional scaling applications |
SASA: Annual South African Statistical Association Conference, 7-9 November 2012, Port Elizabeth |
| Oyedele, O.V.F., Lubbe, S. and le Roux, N.J. |
Partial Least Squares Regression Biplots |
SASA: Annual South African Statistical Association Conference, 7-9 November 2012, Port Elizabeth |
| Pierre Bernard, T. and Lubbe, S. |
Biplots for Investigating Differential Living Conditions between South African Racial Groups |
SASA: Annual South African Statistical Association Conference, 7-9 November 2012, Port Elizabeth |
| Williams, D. and Lubbe, S. |
Common Components to Construct Biplots for Longitudinal Data |
SASA: Annual South African Statistical Association Conference, 7-9 November 2012, Port Elizabeth |
| Gower, J.C., le Roux, N.J. and Lubbe, S. |
Biplots: The Palette |
COMPSTAT 2012, 27-31 August 2012, Limmasol, Cyprus |
| Le Roux, N.J., Gower, J.C. and Lubbe, S. |
Extending the Theory of Nonlinear Biplots: Categorical Canonical Variate Analysis Biplots |
COMPSTAT 2012, 27-31 August 2012, Limmasol, Cyprus |
| Lubbe, S., Oyedele, O.V.F. and le Roux, N.J. |
Biplots for Partial Least Squares Regression |
COMPSTAT 2012, 27-31 August 2012, Limmasol, Cyprus |
| Lubbe, S., le Roux, N.J. and Gower, J.C. |
Canonical Analysis of Distance in the Mining Industry |
SASA: Annual South African Statistical Association Conference, 1-3 November 2011, Pretoria |
| Oyedele, O.V.F. and Lubbe, S. |
The Covariance Biplot to reveal relationships between different sets of variables |
SASA: Annual South African Statistical Association Conference, 1-3 November 2011, Pretoria |
| Timm, A. and Lubbe, S. |
Programming in R: Exploring Classes, Methods and Interfacing |
SASA: Annual South African Statistical Association Conference, 1-3 November 2011, Pretoria |
| Williams, D. and Lubbe, S. |
Biplots for three-mode data: An application to HIV immune response data |
SASA: Annual South African Statistical Association Conference, 1-3 November 2011, Pretoria |
| Le Roux, N.J., Lubbe, S. and Gower, J.C. |
Biplots for Categorical Variables: Grouped and Ungrouped Data |
CARME: Correspondence Analysis and Related Methods Conference, 1-4 October 2011, Assos, Turkey |
| Lubbe, S., le Roux, N.J. and Gower, J.C. |
Analysis of Distance Biplots: Grouped and Ungrouped Data |
CARME: Correspondence Analysis and Related Methods Conference, 1-4 October 2011, Assos, Turkey |
| Lubbe, S., Silal, S. and le Roux, N.J. |
Constructing a Socio-Economic Status Index for a Non-Homogeneous Society with Distinct Sets of Variables in Multiple Correspondence Analysis |
CARME: International Conference on Correspondence Analysis and Related Methods, 8 – 11 February 2011, Rennes, France |
| Le Roux, N.J. and Lubbe, S. |
A biplot view of crime in the RSA |
SASA: Annual South African Statistical Association Conference, 10 - 12 November 2010, Potchefstroom |
| Lubbe, S. and Witten, G. |
Monoplot Analysis of Hedge Funds |
SASA: Annual South African Statistical Association Conference, 10 - 12 November 2010, Potchefstroom |
| Le Roux, N.J. and Lubbe, S. |
From Biplots to Understanding Biplots |
Gowerfest II: Geometry of Data Analysis. 19 July 2010, Milton Keynes, UK |
| Le Roux, N.J., Lubbe, S. and Aldrich, C. |
Advanced Biplot Diagnostics for Process Performance Evaluation |
SASA: South African Chemical Engineering Conference, 20 – 23 September 2009, Somerset West |
| Le Roux, N.J. and Lubbe, S. |
Biplots and Clustering for High-Dimensional Paired Data |
IFCS: The 11th Conference of the International Federation of Classification Societies, 15 – 18 March 2009, Dresden, Germany |
| Le Roux, N.J. and Lubbe, S. |
Optimal Canonical Variate Analysis Biplots when the number of groups is less than the number of variables |
SASA: Annual South African Statistical Association Conference, 29 – 31 October 2008, Pretoria |
| Lubbe, S., le Roux, N.J. and Cillie, R. |
A biplot view on Socio-economic progress in South Africa 1994 – 2006 |
SASA: Annual South African Statistical Association Conference, 29 – 31 October 2008, Pretoria |
| La Grange, A.M., le Roux, N.J. and Lubbe, S. |
Constructing and interacting with biplots: The BiplotGUI package for R |
RC33 : 7th International Conference on Social Science Methodology, 1–5 September 2008, Naples, Italy |
| Lubbe, S. and le Roux, N.J. |
Biplots, bagplots a-bags and more … |
RC33 : 7th International Conference on Social Science Methodology, 1–5 September 2008, Naples, Italy |
| Lubbe, S. and le Roux, N.J. |
Enhancing Multivariate Analyses in Forestry and Biopulping Applications with Biplot Methodology |
Conference of the International Biometrics Society, 13 –18 July 2008, Dublin, Ireland |
| Le Roux, N.J. and Lubbe, S. |
Geometrical considerations and Biplots associated with Canonical Variate Analysis involving two classes |
International Conference on Multivariate Statistical Modeling and High Dimensional Data Mining, 19–23 June 2008, Kayseri, Turkey |
| La Grange, A.M., le Roux, N.J. and Lubbe, S. |
BiplotGUI: An Interactive Menu-driven Package for Biplots in R |
SASA: Annual South African Statistical Association Conference, 31 October – 2 November 2007, Johannesburg |
| Le Roux, N.J., Lubbe, S, la Grange, AM and Groenen, PJF. |
General method for obtaining smoothed non-linear biplot prediction trajectories |
SASA: Annual South African Statistical Association Conference, 31 October – 2 November 2007, Johannesburg |
| Lubbe, S., le Roux, N.J., Gower, J.C., Maunders, H. and Patwardhan, S. |
Measures of Fit for Biplots: An Application in the Identification of Differentially Expressed Genes |
SASA: Annual South African Statistical Association Conference, 31 October – 2 November 2007, Johannesburg |
| Groenen, P.J.F., Lubbe, S., le Roux, N.J., la Grange, A.M. |
Nonlinear Biplots with a Shortest Distance Interpretation |
International Meeting of the Psychometric Society, 10 – 13 July 2007, Tokyo, Japan |
| La Grange, A.M., Lubbe, S., Groenen, P.J.F. and le Roux, N.J. |
Applying Unfolding in the Construction of Non-linear Biplot Trajectories |
IFCS: International Conference on Correspondence Analysis and Related Methods, 25 – 27 June 2007, Rotterdam, The Netherlands |
| Gardner, S. and le Roux, N.J. |
Biplots in the exploratory analysis of gene expression arrays |
SASA: Annual South African Statistical Association Conference, 1 – 3 November 2006, Stellenbosch |
| Le Roux, N.J. and Gardner, S. |
Statistical analysis of South African wood pulp data using biplots |
SASA: Annual South African Statistical Association Conference, 1 – 3 November 2006, Stellenbosch |
| Gardner, S. and le Roux, N.J. |
Multidimensional visualisation of time series and the construction of acceptance regions in a PCA biplot |
COMPSTAT 2006, 28 August – 1 September 2006, Rome, Italy |
| Gardner, S. and le Roux, N.J. |
Sub-species of Homopus Areolatus? Biplots and small class inference with Analysis of Distance |
IFCS: The 10th Conference of the International Federation of Classification Societies, 25 – 29 July 2006, Ljubljana, Slovenia |
| Gardner, S., le Roux, N.J. and Gower, J.C. |
Biplots for Free Choice Profile data in Generalised Orthogonal Procrustes Analysis |
SASA: Annual South African Statistical Association Conference, 2 – 4 November 2005, Grahamstown |
| Le Roux, N.J. and Gardner, S. |
Extensions of biplot methodology for analysing group structure in multivariate data |
SASA: Annual South African Statistical Association Conference, 2 – 4 November 2005, Grahamstown |
| Gardner, S. and le Roux, N.J. |
An Identification Biplot for detecting Forgery |
WSC: The 55th Session of the International Statistical Institute, 5–12 April 2005, Sydney, Australia |
| Gardner, S. and le Roux, N.J. |
An Application of Iterative Estimation of Effects in an Experimental Design and Linear Modelling Context |
SASA: Annual South African Statistical Association Conference, 3 – 5 November 2004, Bloemfontein |
| Le Roux, N.J., Gardner, S. and Gower, J.C. |
Using Procrustes Analysis for a Synthesis of Canonical Variate Analysis and Generalised Canonical Correlation Analysis |
SASA: Annual South African Statistical Association Conference, 3 – 5 November 2004, Bloemfontein |
| Gardner, S. and le Roux, N.J. |
Modified biplots for enhancing two-class discriminant analysis |
IFCSL The 9th Conference of the International Federation of Classification Societies, 15–18 July 2004, Chicago, USA |
| Gardner, S., le Roux, N.J. and Aldrich, C. |
Visualisation of process data with biplots |
First African Control Conference, 3–5 December 2003, Cape Town |
| Gardner, S. and le Roux, N.J. |
Application of biplotology in the two-class discriminant analysis case |
SASA: Annual South African Statistical Association Conference, 5–7 November 2003, Johannesburg |
| Le Roux, N.J. and Gardner, S. |
Biplotology for comparing archaeological artefacts from different sites |
SASA: Annual South African Statistical Association Conference, 5–7 November 2003, Johannesburg |
| Gardner, S. and le Roux, N.J. |
Graphics and visualisation in practice: Biplots for exploring multidimensional reality |
WSC: The 54th Session of the International Statistical Institute, 13–20 August 2003, Berlin, Germany |
| Gardner, S. and le Roux, N.J. |
Biplot methodology for categorical data |
CARME: International Conference on Correspondence Analysis and Related Methods, 30 June – 2 July 2003, Barcelona, Spain |
| Gardner, S. and le Roux, N.J. |
Applying robust techniques in biplot methodology |
SASA: Annual South African Statistical Association Conference, 6–8 November 2002, Pretoria |
| Le Roux, N.J. and Gardner, S. |
Discriminant analysis with binary variables: Biplots and the ‘reversal problem’ |
SASA: Annual South African Statistical Association Conference, 6–8 November 2002, Pretoria |
| Gardner, S. and le Roux, N.J. |
Biplot methodology in discriminant analysis with categorical variables |
The 26th Annual Conference of the Gesellschaft für Klassifikation, 22–24 July 2002, Mannheim, Germany |
| Gardner, S. and le Roux, N.J. |
Biplot methodology for discriminant analysis based upon robust methods and principal curves |
IFCS: The 8th Conference of the International Federation of Classification Societies, 16–19 July 2002, Kraków, Poland |
| Erasmus, P.D., Lambrechts, I.J., le Roux, N.J. and Gardner, S. |
Measuring the capital intensity of enterprises listed in the industrial sector of the Johannesburg Stock Exchange: The use of value-added measures |
Tenth annual SAFA conference, 2001, University of Cape Town Graduate School of Business, Cape Town |
| Erasmus, P.D., Lambrechts, I.J., le Roux, N.J. and Gardner, S. |
The use of principal component analyses and biplots to interpret multivariate data: Evaluating traditional and value added measures of capital intensity |
The 29th meeting of EURO Working Group on Financial Modelling, 2001, Haarlem, The Netherlands |
| Gardner, S. and le Roux, N.J. |
Representing large multi-dimensional data sets: Biplots, bagplots and alpha-bags. |
SASA: Annual South African Statistical Association Conference, 14–16 November 2001, Goudini |
| Le Roux, N.J. and Gardner, S. |
Principal components and biplots in allometry: Determining subspecies in Homopus Areolatus |
SASA: Annual South African Statistical Association Conference, 14–16 November 2001, Goudini |
| Erasmus, P.D., Lambrechts, I.J., le Roux, N.J. and Gardner, S. |
Determining a method to measure capital intensity for enterprises listed in the Industrial sector of the Johannesburg Stock Exchange for the period 1989 to 1996 |
FMA-kroniek 2000. Faculteit der Economische Wetenschappen, Erasmus Universiteit, Rotterdam, The Netherlands |
| Gardner, S. and le Roux, N.J. |
Discriminant Analysis Using Principal Curves in Biplots |
SASA: Annual South African Statistical Association Conference, 8–10 November 2000, Johannesburg |
| Le Roux, N.J. and Gardner, S. |
Biplot methodology everywhere: From quality control to stinkwood |
SASA: Annual South African Statistical Association Conference, 8–10 November 2000, Johannesburg |
| Gardner, S. and le Roux, N.J. |
Applying Bootstrapping Techniques to PCA and CVA Biplots |
SASA: Annual South African Statistical Association Conference, 3–5 November 1999, Durban |
| Van Blerk, S.P., le Roux, N.J. and Gardner, S. |
S-Plus Functions for Interactive Linear and Non-linear Biplots |
SASA: Annual South African Statistical Association Conference, 3–5 November 1999, Durban |
| Le Roux, N.J. and Gardner, S. |
An Application of the EM Algorithm to a Left-Censored Statistical Problem in Industry |
SASA: Annual South African Statistical Association Conference, 4–6 November 1998, Midrand |
| Gardner, S., Baard, E.H.W. and le Roux, N.J. |
How many are there? |
Fifth Herpetological Association of Africa Symposium, 16 September 1998, Stellenbosch. |
| Le Roux, N.J. and Gardner, S. |
Estimating the detection probability of geometric tortoises using designed experiments under field conditions |
SASA: Annual South African Statistical Association Conference, 5–7 November 1997, Dikhololo |