Figure 1

Example task. Three curves of the form y = g _i e^kx+ c were created (a) with k = -0.01 and c = 50. Then the range between x = 0 and x = 99 was taken and noise was added. The task for the fit methods was to extract the original parameters using only this noisy part. It was done by (b) fitting each curve separately with y = + c _i , (c) taking the introduced fit method with shared k (y = g _i e^kx+ c _i where k was determined to be -0.0137) and (d) with shared k and c (y = g _i e^kx+ c where k and c resulted in -0.0107 and 55.2 respectively).