Consider a grammar defined by the following rules, where S, U, and V are non terminals, a, b, and care terminals, and e stands for the empty string: S => U U => b c U U => a V V => a V V => e a. What type of grammar is this in the Chomsky hierarchy? What kind of language does it generate (what do the strings it produces look like)? b. Draw the production (parsing) tree for the string b c b c a a. c. Which of the following strings are correct from the point of view of the grammar and which ones are not? bcabca b c b ca a a ab ca b c b c b c

Consider a grammar defined by the following rules, where S, U, and V are non terminals, a, b, and care terminals, and e stands for the empty string: S => U U => b c U U => a V V => a V V => e a. What type of grammar is this in the Chomsky hierarchy? What kind of language does it generate (what do the strings it produces look like)? b. Draw the production (parsing) tree for the string b c b c a a. c. Which of the following strings are correct from the point of view of the grammar and which ones are not? bcabca b c b ca a a ab ca b c b c b c

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Concept explainers

Intelligent Machines

Machines that use artificial intelligence to learn from the environment and past experiences to perform better in the presence of variability and uncertainty are called intelligent machines. Intelligence develops according to environment and experience. It is human-like behavior. When the computer system or any programmed machine learns from the inputs and corresponding outputs, it can be called an intelligent machine.

Question

Consider a grammar defined by the following rules, where S, U, and V are non terminals, a, b, and c are terminals, and e stands for the empty
string:
S => U
U => b c U
U => a V
V => a V
V => e
a. What type of grammar is this in the Chomsky hierarchy? What kind of language does it generate (what do the strings it produces look like)?
b. Draw the production (parsing) tree for the string b c b c a a.
c. Which of the following strings are correct from the point of view of the grammar and which ones are not?
bcabca
b c b ca a a
ab ca
b c b c b c

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Question is attached
Solve number 10
1. Convert the following regular grammar into a Finite Automata S➜X XXXIXY YYYYZ 2 → 22 | 2 2. Convert the previous problem to a regular expression. 3. Write a grammar that generates an even number of X's.
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