Wanhyun Cho and Soonja Kang and Sangkyoon Kim and Soonyoung Park, Variational EM Inference Algorithm for Gaussian Process Classification Model with Multiclass and Its Application to Human Action Classification. journal = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology. October 2015, vol. 104(8). 2012 - 2018 [viewed 20 September 2024]. Available from: https://publications.waset.org/pdf/10003023.