'Working string' presentation slideshows

Context-Free Grammars

Context-Free Grammars. Chapter 11. Languages and Machines. Rewrite Systems and Grammars. A rewrite system (or production system or rule-based system ) is: ? a list of rules, and ? an algorithm for applying them. Each rule has a left-hand side and a right hand side.

1.26k views • 114 slides

Context-Free Grammars

665 views • 66 slides

Decision Procedures

Decision Procedures. A decision procedure is an algorithm whose result is a Boolean value. It must: ? Eventuallly halt, no matter what its input ? Be correct Important decision procedures exist for regular languages: ? Given an FSM M and a string s , does M accept s ?

373 views • 36 slides

Algorithms and Decision Procedures for Regular Languages Intro to Context-free Grammars

MA/CSSE 474 Theory of Computation. Algorithms and Decision Procedures for Regular Languages Intro to Context-free Grammars. Your Questions?. Your parents will probably concur!…. Previous class days' material Reading Assignments. HW 7 or 8 problems Exam 2 Anything else.

435 views • 26 slides