model to predict these missing rectangles your model will then have an understanding of the concept of a face then you take the same model you take the model with all of its knowledge and use it for whatever task you really want to solve for example for predicting the age based on images you just fine-tune it a bit maybe modify the architecture bit no big modifications and your model is not going to give you the missing rectangle anymore but it's going to give you the age of the person that's visible on that image and all that by simply