SPIDER The Spider Objects

TOY SPIRAL data generation object


   A=spiral(H) returns a spiral toy data object initialized with hyperparameters H. 
  
   This generates 2 spirals with 4*m points per spiral, where 1*m points are
   points on two perfect spiral and 3*m points are some additive noise on
   the first quarter.
   
   
   Hyperparameters, and their defaults
    n=1           --  a parameter :-) play to explore
    m=50          --  number of used points per winding
   
   Model
  
   Methods:
    generate,train,test
    Example :  
     d=gen(spiral({'n=1','m=50'}));
     [r s0]=train(svm(kernel('rbf',1)),d)
     plot(s0,[ -20 20 -20 20]);