Neural Network Module for Issue 7

[ShangwuYao]

7

BUGs

• [ ] Update grid_search to work with new interface.
• [ ] Update beamsearch to work with new interface.
• [ ] Debug network using PyTorch 1.0.

REVIEWs

• [x] Look for REVIEW tags in transforms.my_collate_fn. Make sure the new interface does the same thing as the old one.
• [x] In getInputChar in airbus_attention_vtlp_CTC.py, make sure the new call to torch.bernoulli is okay.
• [ ] Document everything @ShangwuYao. Add docstrings (e.g. Numpy standard); give more descriptive function names (e.g. not my_collate_fn).
• [x] Move generic functions to audlib.nn. ASR-specific NNs can be put into audlib.nn.asr.
• [ ] Resolve dependency to sklearn.ParameterSampler. We can implement this if it's not complicated.
• [x] Consider refactoring model_data_optim.