Subsequent to the weight propagation, {HEAD ~ the weights} can be normalized, thereby preventing {TAIL ~ entrapment} in a local optimum 
Subsequent to the weight propagation , { HEAD ~ the weights } can be normalized , thereby preventing { TAIL ~ entrapment } in a local optimum
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH