Code review and refactoring

[papachristoumarios]

The following issue will consist of general comments and individual comments referring to certain files. Reviews for each file will be posted as separate answers.

[papachristoumarios]

entity_recognizer.py

• Remove unecessary flags such as use_spacy
• Format PEP8
• Schema examples in wiki

[papachristoumarios]

dataset_creator.py

• Can you move the desired functionality to pparser.py and codifier.py, since (ideally) this must be done in less passes?

[papachristoumarios]

train_doc2vec.py

• Move it to scripts?

[papachristoumarios]

train_tf_doc2vec.py

What is the desired functionality of the file? Is the code really working?