on the right track?

[Suhas Patil]

I verified for 0 versus 7 case and I am getting exactly same number of support vectors. (and also Ein and Eout)
Haven't explored using sv coefficients for calculating the error. I am using this API:
double svm_predict(const struct svm_model *model, const struct svm_node *x); from 'svm.h'
that returns the predicted class value. I am calling this method in loop for all the test points and comparing against the ground truth (y array from svm_problem) to compute Ein or Eout.