Jonathan, FWIW I mentored a Google Summer of Code student (who was more than highly self-sufficient and needed next to no help, apart from some small R packaging tricks) as part of the Xapian project in order to write RXapian:
https://github.com/amandaJayanetti/RXapian which is an R interface to the Xapian index engine. I don't know much about these indice generators, but Xapian [1] appears to be free, open-source, current, maintained, powerful, and used. From what I gather you are still betting on an older (and as I seem to recall, deprecated) technology. There may be more teers ahead. The other tip would be to get in touch with Gabor who as part of r-hub has indices for just about anything, and 9as he his a generation younger than Spencer, you or me) also provides current (ie JSON over REST) interfaces. Dirk [1] https://xapian.org/ -- http://dirk.eddelbuettel.com | @eddelbuettel | e...@debian.org ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
