22 citations · 34 across the 14 of their papers we have counts for
5 papers · 1 filter
A derivation of variational message passing (VMP) for latent Dirichlet allocation (LDA)
Rebecca M. C. Taylor, Dirko Coetsee, Johan A. du Preez
Latent Dirichlet Allocation (LDA) is a probabilistic model used to uncover latent topics in a corpus of documents. Inference is often performed using variational Bayes (VB) algorit…
Temporal separation of whale vocalizations from background oceanic noise using a power calculation
Jacques van Wyk, Jaco Versfeld, Johan du Preez
The process of analyzing audio signals in search of cetacean vocalizations is in many cases a very arduous task, requiring many complex computations, a plethora of digital processi…
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
Variational Bayes (VB) applied to latent Dirichlet allocation (LDA) has become the most popular algorithm for aspect modeling. While sufficiently successful in text topic extractio…
Degenerate Gaussian factors for probabilistic inference
J. C. Schoeman, C. E. van Daalen, J. A. du Preez
In this paper, we propose a parametrised factor that enables inference on Gaussian networks where linear dependencies exist among the random variables. Our factor representation is…
Efficient approximations of the multi-sensor labelled multi-Bernoulli filter
S. C. J. Robertson, C. E. van Daalen, J. A. du Preez
In this paper, we propose two efficient, approximate formulations of the multi-sensor labelled multi-Bernoulli (LMB) filter, which both allow the sensors' measurement updates to be…