predictor: extend the model with astro-ph

[jacenkow]

The current version of beard-server only supports one general model for arXiv preprints. Special models for astro-ph must be trained.

[jalavik]

👍

Here are the classifiers from production that we can add:
https://github.com/inspirehep/inspire-next/tree/production/inspirehep/modules/predicter/classifiers

For the unpickling to work, you just need to search/replace the imports with the current ones. E.g. s/inspirehep.modules.predicter.arxiv._get_title/beard_server.modules.predictor.arxiv._get_title/g

[jacenkow]

Next thing to do on my list:

• all articles with arXiv categories
• all articles with no categories
• astro-ph till 2013 with arXiv categories
• astro-ph till 2013 with no categories