text: We show that the suggested << hybrid proba-bilistic model >> -LRB- which combines [[ global variables ]] , like translation , with local variables , like relative positions and appearances of body parts -RRB- , leads to : -LRB- i -RRB- faster convergence of learning phase , -LRB- ii -RRB- robustness to occlusions , and , -LRB- iii -RRB- higher recognition rate .