Refactor on extract.cpp, move method => archive_io
Update .gitignore and Makefile
Merge branch 'feature/validation' into develop
Simple DNN translated from MATLAB.
Add FeedForward & BackPropagation, also blas.h
Helper function to accumulate gradient of params.
Change learning rate to negative (gradient descent)
Merge branch 'feature/dnn' into develop
Fix Cumulative DTW, and remove (i,j) in beta.
Finish device matrix-matrix multiplication.
Sgemm for device & host matrix. Fix cScore in calc.
More syntax sugar for vector, matrix operation.
DTW with DNN now operational.
Full syntax sugar for device matrix/vector.
Merge branch 'feature/device_matrix' into develop
Fixed a small compilation err.
Introduce random init of device matrix.
Remove some c++11 features and fix bugs.
Training DTW-DNN using device matrix on GPU.
[Bug Fixed] rand of matrix isn't actually random.