task 10 : strict sparse and compressible examples

[LinaMiao]

No description provided.

[LinaMiao]

-- nope, both strict sparse and compressible, for 512 200 orth A, pqnl1 better than spg, half iteration and half matrix-vector

[LinaMiao]

if not orthogonalize A,
for strict sparse example ------- pqn better
for compress example --------spg better

[LinaMiao]

-- for larger size system 5120 200 orth A, similar advantages can be observed
-- for even larger size system 5120_2 oth A, similar
-- for even larger size system 5120_5 oth A, similar