what is a good performance measure for comparing different neural network architectures in unsupervised clustering task? What is a good measure to use when trying to decide between picking unsupervised clustering NN architectures? 
There seems to some ideas here, but i am trying to find out feedback/suggestions from people who've used it before and seen the measures to be meaningful.
A solution is using some metrics like silhouette measure to measure the performance of ANN in clustering.