Data pre-processing module.

[czgdp1807]

Description of the problem

Example of the problem

References/Other comments

[czgdp1807]

https://arxiv.org/pdf/1906.08510.pdf can be a good start to think of some APIs in this direction.

[czgdp1807]

https://www.tensorflow.org/api_docs/python/tf/keras/preprocessing/ has many good APIs which can be implemented in BNN. Though we will not implement all of them as some of them like load_img are redundant and are just wrappers to pre-existing APIs in various image libraries.

The io module can have the following features,

1. input.hpp - Contains APIs for reading from files.
2. output.hpp - Contains APIs for writing to files.

The pre-processing module can have the following features,

1. image.hpp - Containing all the APIs for image operations. Though the inputs will be Tensors representing images.
2. text.hpp - Contains all the APIs for text pre-processing.
3. sequential.hpp - For sequential data.

Only image.hpp will be implemented in the beginning.