bug another fix in sgd.py
bug another fix in sgd.py, wulian.
parasol version of sgd.py added
bug fix in ps.py
bug fix in sgd.py
init push updated
bug fix in bsmf.py
bsmf.py updated
bug fix in sgd.py
no transfer to list in sgd.py, supported at ps.py
bug fix in ps.py
another bug fix in ps.py
debug/plot code added in sgd.py