> The Spider Objects

>            L object

>        minimize l1 norm , i.e |w|_1
>           under separability contraints (w.x_i+b)>1

>        A=L1(H) returns an l1 object initialized with hyperparameters H.

>        Hyperparameters, and their defaults:

>        Model:
>         alpha                -- the weights of the hyperplane
>         b0                   -- the threshold

>        Methods:
>         train, test