4 papers
Rail break and derailment prediction using Probabilistic Graphical Modelling
Rebecca M. C. Taylor, Johan A. du Preez
Rail breaks are one of the most common causes of derailments internationally. This is no different for the South African Iron Ore line. Many rail breaks occur as a heavy-haul train…
SimLDA: A tool for topic model evaluation
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…
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…
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…