29 Combining Serial, Deterministic and Parallel, Probabilistic Mechanisms Tree Supertagging Construction Activation & Selection Supertag Stapling Construction Integration Rule ApplicationLexical Rule Selection Rule Selection Rule Application Rule Selection & Application Parallel Probabilistic Serial Deterministic Parallel Distributed Processing CFG PCFG Lexicalized PCFG Double R Probabilistic LTAG PDP Mildly Deterministic Range Nondeterministic The parallel probabilistic substrate makes a mildly deterministic serial processing mechanism possible!