The automatic recognition of stop consonants using hidden Markov models. - T. Waardenburg; Johan A. du Preez; M. W. Coetzer (ICASSP, 1992)

Efficient high-order hidden Markov modelling. - Johan A. du Preez; David M. Weber (ICSLP, 1998)

Automatic language recognition using high-order HMMs. - Johan A. du Preez; David M. Weber (ICSLP, 1998)

Efficient training of high-order hidden Markov models using first-order representations. - Johan A. du Preez (Comput. Speech Lang., 1998)

Efficient mixed-order hidden Markov model inference. - Ludwig Schwardt; Johan A. du Preez (INTERSPEECH, 2000)

Automatic language identification using mixed-order HMMs and untranscribed corpora. - Ludwig Schwardt; Johan A. du Preez (INTERSPEECH, 2000)

Developing a Multilingual Telephone Based Information System in African Languages. - Justus C. Roux; Elizabeth C. Botha; Johan A. du Preez (LREC, 2000)

Phoneme-based topic spotting on the switchboard corpus. - M. W. Theunissen; Konrad Scheffler; Johan A. du Preez (INTERSPEECH, 2001)

Automatic syllabification using hierarchical hidden Markov models. - Pieter Nel; Johan A. du Preez (ICASSP (1), 2003)

Offline Signature Verification Using the Discrete Radon Transform and a Hidden Markov Model. - Johannes Coetzer; Ben M. Herbst; Johan A. du Preez (EURASIP J. Adv. Signal Process., 2004)

Estimating the Pen Trajectories of Multi-Path Static Scripts Using Hidden Markov Models. - Emli-Mari Nel; Johan A. du Preez; Ben M. Herbst (ICDAR, 2005)

Estimating the Pen Trajectories of Static Signatures Using Hidden Markov Models. - Emli-Mari Nel; Johan A. du Preez; Ben M. Herbst (IEEE Trans. Pattern Anal. Mach. Intell., 2005)

Application-independent evaluation of speaker detection. - Niko Brümmer; Johan A. du Preez (Comput. Speech Lang., 2006)

Statistical Speech Synthesis for the Blizzard Challenge 2008. - Pieter Scholtz; Albert S. Visagie; Johan A. du Preez (Blizzard Challenge, 2008)

Construction of an Image Quality Assessment Model for Use on Board an Leo Satellite. - Izak van Zyl Marais; Willem Herman Steyn; Johan A. du Preez (IGARSS (2), 2008)

Verification of dynamic curves extracted from static handwritten scripts. - Emli-Mari Nel; Johan A. du Preez; Ben M. Herbst (Pattern Recognit., 2008)

A pseudo-skeletonization algorithm for static handwritten scripts. - Emli-Mari Nel; Johan A. du Preez; Ben M. Herbst (Int. J. Document Anal. Recognit., 2009)

Audio-Visual Speech Recognition using SciPy. - Helge Reikeras; Ben M. Herbst; Johan A. du Preez; Herman A. Engelbrecht (SciPy, 2010)

Efficient backward decoding of high-order hidden Markov models. - Herman Arnold Engelbrecht; Johan A. du Preez (Pattern Recognit., 2010)

Left ventricular segmentation from MRI datasets with edge modelling conditional random fields. - Janto F. Dreijer; Ben M. Herbst; Johan A. du Preez (BMC Medical Imaging, 2013)

The PAV algorithm optimizes binary proper scoring rules - Niko Brummer; Johan A. du Preez (CoRR, 2013)

SAWACMMM'17: The 1st Workshop on Multi Media Applications within the South African Context. - Johan A. du Preez; Riaan Wolhuter; Ben M. Herbst; Nicu Sebe; Vincent Oria (ACM Multimedia, 2017)

Regularized Gaussian belief propagation. - Francois Kamper; Johan A. du Preez; Sarel Steel; Stephan Wagner 003 (Stat. Comput., 2018)

Stabilising priors for robust Bayesian deep learning. - Felix McGregor; Arnu Pretorius; Johan A. du Preez; Steve Kroon (CoRR, 2019)

A Cluster Graph Approach to Land Cover Classification Boosting. - Lloyd Haydn Hughes; Simon Streicher; Ekaterina Chuprikova; Johan A. du Preez (Data, 2019)

On the Convergence of Gaussian Belief Propagation with Nodes of Arbitrary Size. - Francois Kamper; Sarel Steel; Johan A. du Preez (J. Mach. Learn. Res., 2019)

Introduction to quasi-open set semi-supervised learning for big data analytics. - Emile R. Engelbrecht; Johan A. du Preez (CoRR, 2020)

Regularized Gaussian Belief Propagation with Nodes of Arbitrary Size. - Francois Kamper; Sarel Steel; Johan A. du Preez (J. Mach. Learn. Res., 2020)

Strengthening Probabilistic Graphical Models: The Purge-and-Merge Algorithm. - Simon Streicher; Johan A. du Preez (IEEE Access, 2021)

ALBU: An approximate Loopy Belief message passing algorithm for LDA to improve performance on small data sets. - Rebecca M. C. Taylor; Johan A. du Preez (CoRR, 2021)

Graph Coloring: Comparing Cluster Graphs to Factor Graphs. - Simon Streicher; Johan A. du Preez (CoRR, 2021)

A Probabilistic Graphical Model Approach to the Structure-and-Motion Problem. - Simon Streicher; Willie Brink; Johan A. du Preez (CoRR, 2021)

Variational message passing (VMP) applied to LDA. - Rebecca M. C. Taylor; Johan A. du Preez (CoRR, 2021)

Mobile Processor Energy Usage in the Scientific Environment. - Willem A. Smit; Johan A. du Preez; Guy A. E. Vandenbosch (Comput. Sci. Eng., 2021)

Automated feature-specific tree species identification from natural images using deep semi-supervised learning. - Dewald Homan; Johan A. du Preez (Ecol. Informatics, 2021)

SimLDA: A Tool for Topic Model Evaluation. - Rebecca M. C. Taylor; Johan A. du Preez (FTC (3), 2022)

A Temporal Extension of Latent Dirichlet Allocation for Unsupervised Acoustic Unit Discovery. - Werner van der Merwe; Herman Kamper; Johan Adam du Preez (INTERSPEECH, 2022)

ALBU: An Approximate Loopy Belief Message Passing Algorithm for LDA for Small Data Sets. - Rebecca M. C. Taylor; Johan A. du Preez (SAI (1), 2022)

LDPC codes: comparing cluster graphs to factor graphs. - J. du Toit; Johan A. du Preez; Riaan Wolhuter (CoRR, 2022)

LDPC codes: tracking non-stationary channel noise using sequential variational Bayesian estimates. - J. du Toit; Johan A. du Preez; Riaan Wolhuter (CoRR, 2022)

Rail break and derailment prediction using Probabilistic Graphical Modelling. - Rebecca M. C. Taylor; Johan A. du Preez (CoRR, 2022)

Temporal separation of whale vocalizations from background oceanic noise using a power calculation. - Jacques van Wyk; Johan A. du Preez; Jaco Versfeld (Ecol. Informatics, 2022)

Degenerate Gaussian factors for probabilistic inference. - J. C. Schoeman; Corné E. van Daalen; Johan A. du Preez (Int. J. Approx. Reason., 2022)

Efficient approximations of the multi-sensor labelled multi-Bernoulli filter. - Stuart C. J. Robertson; Corné E. van Daalen; Johan A. du Preez (Signal Process., 2022)

Linking generative semi-supervised learning and generative open-set recognition. - Emile Reyn Engelbrecht; Johan A. du Preez (CoRR, 2023)

Soft-output signal detection for cetacean vocalizations using spectral entropy, k-means clustering and the continuous wavelet transform. - M. W. Rademan; Daniel J. J. Versfeld; Johan A. du Preez (Ecol. Informatics, 2023)

Low-density parity-check codes: tracking non-stationary channel noise using sequential variational Bayesian estimates. - J. du Toit; Johan A. du Preez; Riaan Wolhuter (Telecommun. Syst., 2024)