| criterion | Compute the empirical L_2 distance related to the warping function. | 
| estimationTheta | Estimate the warping parameters. | 
| initialisationPara | Initialize the functional parameters (associated to the aligned curves). | 
| initialisationTheta | Initialize the warping parameters. | 
| majPara | Update the functional parameters (associated to the aligned curves). | 
| predictionTheta | Predict the warping parameters. | 
| warpMix | Estimate the non linear mixed effect functional model. | 
| warpTimeFunction | Compute the warped time points |