noncontracting grammarの例文
- This technique also proves that every noncontracting grammar is context-sensitive.
- None of the rules of a noncontracting grammar decreases the length of the string that is being rewritten.
- A formal language that can be described by a context-sensitive grammar, or, equivalently, by a noncontracting grammar or a linear bounded automaton, is called a context-sensitive language.
- If the possibility of adding the empty string to a language is added to the strings recognized by the noncontracting grammars ( which can never include the empty string ) then the languages in these two definitions are identical.
- Some definitions of a context-sensitive grammar only require that for any production rule of the form u ?! v, the length of u shall be less than or equal to the length of v . This seemingly weaker requirement is in fact weakly equivalent, see Noncontracting grammar # Transforming into context-sensitive grammar.
