DocDepot automatically files PDFs from scientific journals into a
directory structure that is easy to browse.  The intent is to make it easy
for groups to share journal collections.

Determining appropriate metadata for a file is challenging.  For now, no
attempt is made to get metadata from the file contents.  Rather, incoming
files must be renamed as <pmid>.pdf.





/srv/doc-depot/
  incoming/
  pmid/123.pdf
  author/au/yr/jrnl - title.pdf
  locus/pmid_jrnl...
  sha1/ab/cd/ef/abcdef...xyz.pdf

root/doc-depot/
  bin/refile
  lib/...
  www/
    .htaccess
    doc-depot ->
    

comments

database-backed

multiple sources
multiple cvs
support PDF, ppt, 
ranking

refs/
incoming/
by-sha1/hashed/{file,meta}
by-submitter/
by-date/ 
by-doi/
by-pmid/
by-author/ {by-year,by-tag} / title -> sha1/
by-journal/
by-tag/domain/tag/...
  domain = AiB, CDD, MeSH, etc.

paper dropped into bucket
auto parse author, date, title, abstract when possible
hash of file used as primary key


by-doi/doi:xxxx/sha1a/{abstract,paper,authors}...
by-doi/doi:xxxx/sha1b/abstract