Start from idiot example: 4 sample data:  +(1,0), +(2,0), -(-1,0),-(-2,0), what is the SVM boundary and support vectors? It is easy to know that the most closest positive (+) example and negative (-) example are (1,0) and (-1,0) accordingly.  It is easy to know the SVM boundary should be x=0. Ok, how can we use math analytic to get it via SVM concept, i.e. max the width between closet positive/negative samples. Set the SVM boundary is ax+by+c=0 The support vector are ax+by+c=d and is ax+by+c=-d.   (d>0) Set the twoRead More