ldym
Revert "ldym"

This reverts commit 15e8dd3c48943f7138f7aca6bd500b5de533fdae.
Revert "Revert "ldym""

This reverts commit abfc004fe33040468a4433ce7fdaa5992919b6c3.
Revert "Revert "Revert "ldym"""

This reverts commit 6e0eaf25c071eb7936c20118210c8150cadeff47.
Revert "fix lstm.py log(0)"

This reverts commit d420ce3b1aefaaf1531e07fee440badc1637dfc3.
Revert "changed lstm.py log(0) issue"

This reverts commit 64f1bc70661b90aabd764a983a358cf84f42dad7.
fix lstm.py log(0) issue