Automatically tag based on arXiv subject area

[ketch]

It would be nice to automatically tag any entry related to an arXiv paper with a hashtag corresponding to the arXiv subject area. Questions:

• Do we want this?
• If yes, what tags should we use?
  • math.NA -> #math-NA
  • math.NA -> #math-numericalAnalysis
  • math.NA -> #numericalAnalysis
  • other?

[ketch]

This is a quick note on how to do this:

import urllib
url = 'http://export.arxiv.org/api/query?id_list=1308.0802'
data = urllib.urlopen(url).read()

Then data is XML and contains 'category term="math.NA"', so we just need to parse it and extract the category.