Automatic face recognition in a heterogeneous population. - Darryl W. Purnell; Christoph Nieuwoudt; Elizabeth C. Botha (Pattern Recognit. Lett., 1998)

Improved performance and generalization of minimum classification error training for continuous speech recognition. - Darryl W. Purnell; Elizabeth C. Botha (INTERSPEECH, 2000)

Bayesian methods for HMM speech recognition with limited training data. - Darryl W. Purnell; Elizabeth C. Botha (INTERSPEECH, 2001)

Improved generalization of MCE parameter estimation with application to speech recognition. - Darryl W. Purnell; Elizabeth C. Botha (IEEE Trans. Speech Audio Process., 2002)