void pickFromK ( MType margin [K], ap_uint <32> counter, ap_uint <32> ws, MType& maxMargin, ap_uint <32>& maxIndex )
pick best weight vector for classification from K vectors
Parameters:
| margin | K margins generate by K weight vectors. |
| counter | start index of this K margins in all margins. |
| ws | number of margins |
| maxMargin | max of K margins. |
| maxIndex | which index does max margin sits. |