EntityQ995686· pop 8· linked from 69 articlesindexed languageSign in to saveformal languageConnectionsregular languageEntitycontext-free languageEntitytree-adjoining grammarEntitynested stack automatonEntityInternational Standard Book NumberEntitydigital object identifierEntityTuring machineEntitynatural language processingEntitysubsetEntityQ118398Entityformal languageEntityfinite-state machineEntityautomata theoryEntityChomsky hierarchyEntityQ22908627EntityAlfred AhoEntityformal grammarEntitycontext-free grammarEntitypushdown automatonEntityJohn Edward HopcroftEntityCategoriesFormal languages