activity
20082023
most citedOn Mixtures of Skew Normal and Skew t-Distributions

192 citations · 426 across the 48 of their papers we have counts for

collaborators

56 papers

stat.CO2023

Semi-supervised Gaussian mixture modelling with a missing-data mechanism in R

Ziyang Lyu, Daniel Ahfock, Ryan Thompson +1

Semi-supervised learning is being extensively applied to estimate classifiers from training data in which not all the labels of the feature vectors are available. We present gmmssl…

stat.ML2022

Analysis of Estimating the Bayes Rule for Gaussian Mixture Models with a Specified Missing-Data Mechanism

Ziyang Lyu

Semi-supervised learning (SSL) approaches have been successfully applied in a wide range of engineering and scientific fields. This paper investigates the generative model framewor…

stat.ME2022

Functional Mixtures-of-Experts

Faïcel Chamroukhi, Nhat Thien Pham, Van Hà Hoang +1

We consider the statistical analysis of heterogeneous data for prediction in situations where the observations include functions, typically time series. We extend the modeling with…

stat.ME2021

Data-fusion using factor analysis and low-rank matrix completion

Daniel Ahfock, Saumyadipta Pyne, Geoffrey J. McLachlan

Data-fusion involves the integration of multiple related datasets. The statistical file-matching problem is a canonical data-fusion problem in multivariate analysis, where the obje…

stat.ML2021

Harmless label noise and informative soft-labels in supervised classification

Daniel Ahfock, Geoffrey J. McLachlan

Manual labelling of training examples is common practice in supervised learning. When the labelling task is of non-trivial difficulty, the supplied labels may not be equal to the g…

stat.ML2021

Semi-Supervised Learning of Classifiers from a Statistical Perspective: A Brief Review

Daniel Ahfock, Geoffrey J. McLachlan

There has been increasing attention to semi-supervised learning (SSL) approaches in machine learning to forming a classifier in situations where the training data for a classifier…