... more over time: we in-tend for it to generalize and encapsulate best practices,and serve as a testbed for new practices. Dyna is now be-ing used for parsing, machine translation, morphologicalanalysis, ... used for parsing, syntax-basedmachine translation, morphological analysis, grammarinduction, and finite-state operations.It is well known that various parsing algorithms for CFG and other formalisms ... Parameter TrainingDyna provides facilities for training parameters. For ex-ample, from Fig. 1, it automatically derives the inside-outside (EM) algorithm for training PCFGs.How is this possible?...