This a program to implement the so-called "dancing link" which is introduced in Knuth s paper. This is really a super
acrobatic and I am sure that not many programmers can understand the algorithms.
The program performs alpha seeding within LIBSVM Solvers. Please refer to:
D. DeCoste and K. Wagstaff, "Alpha Seeding for Support Vector Machines for the meaning of alpha seeding".
