default search action
Google
Google Scholar
Semantic Scholar
Internet Archive Scholar
CiteSeerX
ORCIDJohan A. du Preez
Person information
- affiliation: University of Stellenbosch, South Africa
Refine list
refinements active!
zoomed in on ?? of ?? records
view refined list in
export refined list as
2020 – today
- 2024
[j20]J. du Toit, Johan A. du Preez, Riaan Wolhuter:
Low-density parity-check codes: tracking non-stationary channel noise using sequential variational Bayesian estimates. Telecommun. Syst. 85(2): 247-262 (2024)- 2023
- [j19]M. W. Rademan, Daniel J. J. Versfeld
, Johan A. du Preez:
Soft-output signal detection for cetacean vocalizations using spectral entropy, k-means clustering and the continuous wavelet transform. Ecol. Informatics 74: 101990 (2023) - [i17]Emile Reyn Engelbrecht, Johan A. du Preez:
Linking generative semi-supervised learning and generative open-set recognition. CoRR abs/2303.11702 (2023) - 2022
- [j18]Jacques van Wyk, Johan A. du Preez, Jaco Versfeld:
Temporal separation of whale vocalizations from background oceanic noise using a power calculation. Ecol. Informatics 69: 101627 (2022) - [j17]J. C. Schoeman, Corné E. van Daalen, Johan A. du Preez:
Degenerate Gaussian factors for probabilistic inference. Int. J. Approx. Reason. 143: 159-191 (2022) - [j16]Stuart C. J. Robertson, Corné E. van Daalen, Johan A. du Preez:
Efficient approximations of the multi-sensor labelled multi-Bernoulli filter. Signal Process. 199: 108633 (2022) - [c16]Rebecca M. C. Taylor, Johan A. du Preez:
SimLDA: A Tool for Topic Model Evaluation. FTC (3) 2022: 534-554 - [c15]Werner van der Merwe, Herman Kamper, Johan Adam du Preez:
A Temporal Extension of Latent Dirichlet Allocation for Unsupervised Acoustic Unit Discovery. INTERSPEECH 2022: 1426-1430 - [c14]Rebecca M. C. Taylor, Johan A. du Preez:
ALBU: An Approximate Loopy Belief Message Passing Algorithm for LDA for Small Data Sets. SAI (1) 2022: 723-746 - [i16]J. du Toit, Johan A. du Preez, Riaan Wolhuter:
LDPC codes: comparing cluster graphs to factor graphs. CoRR abs/2204.06350 (2022) - [i15]J. du Toit, Johan A. du Preez, Riaan Wolhuter:
LDPC codes: tracking non-stationary channel noise using sequential variational Bayesian estimates. CoRR abs/2204.07037 (2022) - [i14]Werner van der Merwe, Herman Kamper, Johan A. du Preez:
A Temporal Extension of Latent Dirichlet Allocation for Unsupervised Acoustic Unit Discovery. CoRR abs/2206.11706 (2022) - [i13]Rebecca M. C. Taylor, Johan A. du Preez:
SimLDA: A tool for topic model evaluation. CoRR abs/2208.09299 (2022) - [i12]Rebecca M. C. Taylor, Johan A. du Preez:
Rail break and derailment prediction using Probabilistic Graphical Modelling. CoRR abs/2208.11940 (2022) - 2021
- [j15]Simon Streicher, Johan A. du Preez:
Strengthening Probabilistic Graphical Models: The Purge-and-Merge Algorithm. IEEE Access 9: 149423-149432 (2021) - [j14]Willem A. Smit, Johan A. du Preez, Guy A. E. Vandenbosch:
Mobile Processor Energy Usage in the Scientific Environment. Comput. Sci. Eng. 23(3): 65-72 (2021) - [j13]Dewald Homan, Johan A. du Preez:
Automated feature-specific tree species identification from natural images using deep semi-supervised learning. Ecol. Informatics 66: 101475 (2021) - [i11]J. C. Schoeman, Corné E. van Daalen, Johan A. du Preez:
Degenerate Gaussian factors for probabilistic inference. CoRR abs/2104.15010 (2021) - [i10]Simon Streicher, Johan A. du Preez:
Strengthening Probabilistic Graphical Models: The Purge-and-merge Algorithm. CoRR abs/2110.00091 (2021) - [i9]Rebecca M. C. Taylor, Johan A. du Preez:
ALBU: An approximate Loopy Belief message passing algorithm for LDA to improve performance on small data sets. CoRR abs/2110.00635 (2021) - [i8]Simon Streicher, Johan A. du Preez:
Graph Coloring: Comparing Cluster Graphs to Factor Graphs. CoRR abs/2110.02048 (2021) - [i7]Simon Streicher, Willie Brink, Johan A. du Preez:
A Probabilistic Graphical Model Approach to the Structure-and-Motion Problem. CoRR abs/2110.03792 (2021) - [i6]Dewald Homan, Johan A. du Preez:
Automated Feature-Specific Tree Species Identification from Natural Images using Deep Semi-Supervised Learning. CoRR abs/2110.03994 (2021) - [i5]Jacques van Wyk, Jaco Versfeld, Johan A. du Preez:
Temporal separation of whale vocalizations from background oceanic noise using a power calculation. CoRR abs/2110.10010 (2021) - [i4]Rebecca M. C. Taylor, Johan A. du Preez:
Variational message passing (VMP) applied to LDA. CoRR abs/2111.01480 (2021) - 2020
- [j12]Francois Kamper, Sarel Steel, Johan A. du Preez:
Regularized Gaussian Belief Propagation with Nodes of Arbitrary Size. J. Mach. Learn. Res. 21: 101:1-101:42 (2020) - [i3]Emile R. Engelbrecht, Johan A. du Preez:
Introduction to quasi-open set semi-supervised learning for big data analytics. CoRR abs/2002.01368 (2020)
2010 – 2019
- 2019
- [j11]Lloyd Haydn Hughes, Simon Streicher, Ekaterina Chuprikova, Johan A. du Preez:
A Cluster Graph Approach to Land Cover Classification Boosting. Data 4(1): 10 (2019) - [j10]Francois Kamper, Sarel Steel, Johan A. du Preez:
On the Convergence of Gaussian Belief Propagation with Nodes of Arbitrary Size. J. Mach. Learn. Res. 20: 165:1-165:37 (2019) - [i2]Felix McGregor, Arnu Pretorius, Johan A. du Preez, Steve Kroon:
Stabilising priors for robust Bayesian deep learning. CoRR abs/1910.10386 (2019) - 2018
- [j9]Francois Kamper, Johan A. du Preez, Sarel Steel, Stephan Wagner:
Regularized Gaussian belief propagation. Stat. Comput. 28(3): 653-672 (2018) - 2017
- [c13]Johan A. du Preez, Riaan Wolhuter, Ben M. Herbst, Nicu Sebe, Vincent Oria:
SAWACMMM'17: The 1st Workshop on Multi Media Applications within the South African Context. ACM Multimedia 2017: 1965-1966 - 2013
- [j8]Janto F. Dreijer, Ben M. Herbst, Johan A. du Preez:
Left ventricular segmentation from MRI datasets with edge modelling conditional random fields. BMC Medical Imaging 13: 24 (2013) - [i1]Niko Brummer, Johan A. du Preez:
The PAV algorithm optimizes binary proper scoring rules. CoRR abs/1304.2331 (2013) - 2010
- [j7]Herman Arnold Engelbrecht, Johan A. du Preez:
Efficient backward decoding of high-order hidden Markov models. Pattern Recognit. 43(1): 99-112 (2010) - [c12]Helge Reikeras, Ben M. Herbst, Johan A. du Preez, Herman A. Engelbrecht:
Audio-Visual Speech Recognition using SciPy. SciPy 2010: 85-91
2000 – 2009
- 2009
- [j6]Emli-Mari Nel, Johan A. du Preez, Ben M. Herbst:
A pseudo-skeletonization algorithm for static handwritten scripts. Int. J. Document Anal. Recognit. 12(1): 47-62 (2009) - 2008
- [j5]Emli-Mari Nel, Johan A. du Preez, Ben M. Herbst:
Verification of dynamic curves extracted from static handwritten scripts. Pattern Recognit. 41(12): 3773-3785 (2008) - [c11]Pieter Scholtz, Albert S. Visagie, Johan A. du Preez:
Statistical Speech Synthesis for the Blizzard Challenge 2008. Blizzard Challenge 2008 - [c10]Izak van Zyl Marais, Willem Herman Steyn, Johan A. du Preez:
Construction of an Image Quality Assessment Model for Use on Board an Leo Satellite. IGARSS (2) 2008: 1068-1071 - 2006
- [j4]Niko Brümmer, Johan A. du Preez:
Application-independent evaluation of speaker detection. Comput. Speech Lang. 20(2-3): 230-275 (2006) - 2005
- [j3]Emli-Mari Nel, Johan A. du Preez, Ben M. Herbst:
Estimating the Pen Trajectories of Static Signatures Using Hidden Markov Models. IEEE Trans. Pattern Anal. Mach. Intell. 27(11): 1733-1746 (2005) - [c9]Emli-Mari Nel, Johan A. du Preez, Ben M. Herbst:
Estimating the Pen Trajectories of Multi-Path Static Scripts Using Hidden Markov Models. ICDAR 2005: 41-47 - 2004
- [j2]Johannes Coetzer, Ben M. Herbst, Johan A. du Preez:
Offline Signature Verification Using the Discrete Radon Transform and a Hidden Markov Model. EURASIP J. Adv. Signal Process. 2004(4): 559-571 (2004) - 2003
- [c8]Pieter Nel, Johan A. du Preez:
Automatic syllabification using hierarchical hidden Markov models. ICASSP (1) 2003: 768-771 - 2001
- [c7]M. W. Theunissen, Konrad Scheffler, Johan A. du Preez:
Phoneme-based topic spotting on the switchboard corpus. INTERSPEECH 2001: 283-286 - 2000
- [c6]Ludwig Schwardt, Johan A. du Preez:
Efficient mixed-order hidden Markov model inference. INTERSPEECH 2000: 238-241 - [c5]Ludwig Schwardt, Johan A. du Preez:
Automatic language identification using mixed-order HMMs and untranscribed corpora. INTERSPEECH 2000: 254-257 - [c4]Justus C. Roux, Elizabeth C. Botha, Johan A. du Preez:
Developing a Multilingual Telephone Based Information System in African Languages. LREC 2000
1990 – 1999
- 1998
- [j1]Johan A. du Preez:
Efficient training of high-order hidden Markov models using first-order representations. Comput. Speech Lang. 12(1): 23-39 (1998) - [c3]Johan A. du Preez, David M. Weber:
Efficient high-order hidden Markov modelling. ICSLP 1998 - [c2]Johan A. du Preez, David M. Weber:
Automatic language recognition using high-order HMMs. ICSLP 1998 - 1992
- [c1]T. Waardenburg, Johan A. du Preez, M. W. Coetzer:
The automatic recognition of stop consonants using hidden Markov models. ICASSP 1992: 585-588
Coauthor Index
manage site settings
To protect your privacy, all features that rely on external API calls from your browser are turned off by default. You need to opt-in for them to become active. All settings here will be stored as cookies with your web browser. For more information see our F.A.Q.
Unpaywalled article links
Add open access links from 
to the list of external document links (if available).
Privacy notice: By enabling the option above, your browser will contact the API of unpaywall.org to load hyperlinks to open access articles. Although we do not have any reason to believe that your call will be tracked, we do not have any control over how the remote server uses your data. So please proceed with care and consider checking the Unpaywall privacy policy.
Archived links via Wayback Machine
For web page which are no longer available, try to retrieve content from the 
of the Internet Archive (if available).
Privacy notice: By enabling the option above, your browser will contact the API of archive.org to check for archived content of web pages that are no longer available. Although we do not have any reason to believe that your call will be tracked, we do not have any control over how the remote server uses your data. So please proceed with care and consider checking the Internet Archive privacy policy.
Reference lists
Add a list of references from 
, 
, and 
to record detail pages.
load references from crossref.org and opencitations.net
Privacy notice: By enabling the option above, your browser will contact the APIs of crossref.org, opencitations.net, and semanticscholar.org to load article reference information. Although we do not have any reason to believe that your call will be tracked, we do not have any control over how the remote server uses your data. So please proceed with care and consider checking the Crossref privacy policy and the OpenCitations privacy policy, as well as the AI2 Privacy Policy covering Semantic Scholar.
Citation data
Add a list of citing articles from and to record detail pages.
load citations from opencitations.net
Privacy notice: By enabling the option above, your browser will contact the API of opencitations.net and semanticscholar.org to load citation information. Although we do not have any reason to believe that your call will be tracked, we do not have any control over how the remote server uses your data. So please proceed with care and consider checking the OpenCitations privacy policy as well as the AI2 Privacy Policy covering Semantic Scholar.
OpenAlex data
Load additional information about publications from 
.
Privacy notice: By enabling the option above, your browser will contact the API of openalex.org to load additional information. Although we do not have any reason to believe that your call will be tracked, we do not have any control over how the remote server uses your data. So please proceed with care and consider checking the information given by OpenAlex.
last updated on 2024-09-21 01:45 CEST by the dblp team
all metadata released as open data under CC0 1.0 license
see also: Terms of Use | Privacy Policy | Imprint
dblp was originally created in 1993 at:
since 2018, dblp has been operated and maintained by:
the dblp computer science bibliography is funded and supported by:
