Johan A. du Preez

52 papers A* 1A 4B 1Misc 1Journal 37Unranked 8

Year	Rank	Type	Title / Venue / Authors
2024	J	`jnl`	Low-density parity-check codes: tracking non-stationary channel noise using sequential variational Bayesian estimates. Telecommun. Syst. J. du Toit, Johan A. du Preez, Riaan Wolhuter
2023	J	`jnl`	Linking generative semi-supervised learning and generative open-set recognition. CoRR Emile Reyn Engelbrecht, Johan A. du Preez
2023	J	`jnl`	Soft-output signal detection for cetacean vocalizations using spectral entropy, k-means clustering and the continuous wavelet transform. Ecol. Informatics M. W. Rademan, Daniel J. J. Versfeld, Johan A. du Preez
2022	J	`jnl`	A Temporal Extension of Latent Dirichlet Allocation for Unsupervised Acoustic Unit Discovery. CoRR Werner van der Merwe, Herman Kamper, Johan A. du Preez
2022	—	`conf`	ALBU: An Approximate Loopy Belief Message Passing Algorithm for LDA for Small Data Sets. SAI (1) Rebecca M. C. Taylor, Johan A. du Preez
2022	J	`jnl`	Degenerate Gaussian factors for probabilistic inference. Int. J. Approx. Reason. J. C. Schoeman, Corné E. van Daalen, Johan A. du Preez
2022	J	`jnl`	Efficient approximations of the multi-sensor labelled multi-Bernoulli filter. Signal Process. Stuart C. J. Robertson, Corné E. van Daalen, Johan A. du Preez
2022	J	`jnl`	LDPC codes: comparing cluster graphs to factor graphs. CoRR J. du Toit, Johan A. du Preez, Riaan Wolhuter
2022	J	`jnl`	LDPC codes: tracking non-stationary channel noise using sequential variational Bayesian estimates. CoRR J. du Toit, Johan A. du Preez, Riaan Wolhuter
2022	J	`jnl`	Rail break and derailment prediction using Probabilistic Graphical Modelling. CoRR Rebecca M. C. Taylor, Johan A. du Preez
2022	—	`conf`	SimLDA: A Tool for Topic Model Evaluation. FTC (3) Rebecca M. C. Taylor, Johan A. du Preez
2022	J	`jnl`	SimLDA: A tool for topic model evaluation. CoRR Rebecca M. C. Taylor, Johan A. du Preez
2022	J	`jnl`	Temporal separation of whale vocalizations from background oceanic noise using a power calculation. Ecol. Informatics Jacques van Wyk, Johan A. du Preez, Jaco Versfeld
2021	J	`jnl`	A Probabilistic Graphical Model Approach to the Structure-and-Motion Problem. CoRR Simon Streicher, Willie Brink, Johan A. du Preez
2021	J	`jnl`	ALBU: An approximate Loopy Belief message passing algorithm for LDA to improve performance on small data sets. CoRR Rebecca M. C. Taylor, Johan A. du Preez
2021	J	`jnl`	Automated Feature-Specific Tree Species Identification from Natural Images using Deep Semi-Supervised Learning. CoRR Dewald Homan, Johan A. du Preez
2021	J	`jnl`	Automated feature-specific tree species identification from natural images using deep semi-supervised learning. Ecol. Informatics Dewald Homan, Johan A. du Preez
2021	J	`jnl`	Degenerate Gaussian factors for probabilistic inference. CoRR J. C. Schoeman, Corné E. van Daalen, Johan A. du Preez
2021	J	`jnl`	Graph Coloring: Comparing Cluster Graphs to Factor Graphs. CoRR Simon Streicher, Johan A. du Preez
2021	J	`jnl`	Mobile Processor Energy Usage in the Scientific Environment. Comput. Sci. Eng. Willem A. Smit, Johan A. du Preez, Guy A. E. Vandenbosch
2021	J	`jnl`	Strengthening Probabilistic Graphical Models: The Purge-and-Merge Algorithm. IEEE Access Simon Streicher, Johan A. du Preez
2021	J	`jnl`	Strengthening Probabilistic Graphical Models: The Purge-and-merge Algorithm. CoRR Simon Streicher, Johan A. du Preez
2021	J	`jnl`	Temporal separation of whale vocalizations from background oceanic noise using a power calculation. CoRR Jacques van Wyk, Jaco Versfeld, Johan A. du Preez
2021	J	`jnl`	Variational message passing (VMP) applied to LDA. CoRR Rebecca M. C. Taylor, Johan A. du Preez
2020	J	`jnl`	Introduction to quasi-open set semi-supervised learning for big data analytics. CoRR Emile R. Engelbrecht, Johan A. du Preez
2020	J	`jnl`	Regularized Gaussian Belief Propagation with Nodes of Arbitrary Size. J. Mach. Learn. Res. Francois Kamper, Sarel Steel, Johan A. du Preez
2019	J	`jnl`	A Cluster Graph Approach to Land Cover Classification Boosting. Data Lloyd Haydn Hughes, Simon Streicher, Ekaterina Chuprikova, Johan A. du Preez
2019	J	`jnl`	On the Convergence of Gaussian Belief Propagation with Nodes of Arbitrary Size. J. Mach. Learn. Res. Francois Kamper, Sarel Steel, Johan A. du Preez
2019	J	`jnl`	Stabilising priors for robust Bayesian deep learning. CoRR Felix McGregor, Arnu Pretorius, Johan A. du Preez, Steve Kroon
2018	J	`jnl`	Regularized Gaussian belief propagation. Stat. Comput. Francois Kamper, Johan A. du Preez, Sarel Steel, Stephan Wagner
2017	A*	`conf`	SAWACMMM'17: The 1st Workshop on Multi Media Applications within the South African Context. ACM Multimedia Johan A. du Preez, Riaan Wolhuter, Ben M. Herbst, Nicu Sebe, Vincent Oria
2013	J	`jnl`	Left ventricular segmentation from MRI datasets with edge modelling conditional random fields. BMC Medical Imaging Janto F. Dreijer, Ben M. Herbst, Johan A. du Preez
2013	J	`jnl`	The PAV algorithm optimizes binary proper scoring rules CoRR Niko Brummer, Johan A. du Preez
2010	—	`conf`	Audio-Visual Speech Recognition using SciPy. SciPy Helge Reikeras, Ben M. Herbst, Johan A. du Preez, Herman A. Engelbrecht
2010	J	`jnl`	Efficient backward decoding of high-order hidden Markov models. Pattern Recognit. Herman Arnold Engelbrecht, Johan A. du Preez
2009	J	`jnl`	A pseudo-skeletonization algorithm for static handwritten scripts. Int. J. Document Anal. Recognit. Emli-Mari Nel, Johan A. du Preez, Ben M. Herbst
2008	—	`conf`	Construction of an Image Quality Assessment Model for Use on Board an Leo Satellite. IGARSS (2) Izak van Zyl Marais, Willem Herman Steyn, Johan A. du Preez
2008	—	`conf`	Statistical Speech Synthesis for the Blizzard Challenge 2008. Blizzard Challenge Pieter Scholtz, Albert S. Visagie, Johan A. du Preez
2008	J	`jnl`	Verification of dynamic curves extracted from static handwritten scripts. Pattern Recognit. Emli-Mari Nel, Johan A. du Preez, Ben M. Herbst
2006	J	`jnl`	Application-independent evaluation of speaker detection. Comput. Speech Lang. Niko Brümmer, Johan A. du Preez
2005	A	`conf`	Estimating the Pen Trajectories of Multi-Path Static Scripts Using Hidden Markov Models. ICDAR Emli-Mari Nel, Johan A. du Preez, Ben M. Herbst
2005	J	`jnl`	Estimating the Pen Trajectories of Static Signatures Using Hidden Markov Models. IEEE Trans. Pattern Anal. Mach. Intell. Emli-Mari Nel, Johan A. du Preez, Ben M. Herbst
2004	J	`jnl`	Offline Signature Verification Using the Discrete Radon Transform and a Hidden Markov Model. EURASIP J. Adv. Signal Process. Johannes Coetzer, Ben M. Herbst, Johan A. du Preez
2003	—	`conf`	Automatic syllabification using hierarchical hidden Markov models. ICASSP (1) Pieter Nel, Johan A. du Preez
2001	A	`conf`	Phoneme-based topic spotting on the switchboard corpus. INTERSPEECH M. W. Theunissen, Konrad Scheffler, Johan A. du Preez
2000	A	`conf`	Automatic language identification using mixed-order HMMs and untranscribed corpora. INTERSPEECH Ludwig Schwardt, Johan A. du Preez
2000	B	`conf`	Developing a Multilingual Telephone Based Information System in African Languages. LREC Justus C. Roux, Elizabeth C. Botha, Johan A. du Preez
2000	A	`conf`	Efficient mixed-order hidden Markov model inference. INTERSPEECH Ludwig Schwardt, Johan A. du Preez
1998	—	`conf`	Automatic language recognition using high-order HMMs. ICSLP Johan A. du Preez, David M. Weber
1998	—	`conf`	Efficient high-order hidden Markov modelling. ICSLP Johan A. du Preez, David M. Weber
1998	J	`jnl`	Efficient training of high-order hidden Markov models using first-order representations. Comput. Speech Lang. Johan A. du Preez
1992	Misc	`conf`	The automatic recognition of stop consonants using hidden Markov models. ICASSP T. Waardenburg, Johan A. du Preez, M. W. Coetzer