the loss function is closely related to the task to be solved. It is a broad topic. It is very well explained in Bishop's book "neural networks for pattern recognition"
– jpmucJun 12 '19 at 18:44
below, two properties are called
https://stats.stackexchange.com/questions/154879/a-list-of-cost-functions-used-in-neural-networks-alongside-applications
– malochoJun 13 '19 at 14:47