not much to see here, yet
(SCFG machine translation decoder in ruby, currently implements CKY+ parsing and hypergraph viterbi)

helpful stuff
 * https://github.com/jweese/thrax/wiki/Glue-grammar
 * http://aclweb.org/aclwiki/index.php?title=Hypergraph_Format

todo
====
 * integrate with HG (chart to json)
 * kbest
 * feature interface
 * (global) word ids instead of strings
 * animate parsing