Implementing a crf classifier in matlab using a specified paper

I need help implementing a linear crf classifier as the one described in this paper:

http://ift.tt/1RfTsXC

using this toolbox

http://ift.tt/1IUcbGQ

I am using Historgram of Oriented Gradients as the feature extractor for my objects and actions. Can someone give me some instructions on how to start, I am a bit lost on how I can use this toolbox to replicate the work of the paper.