Answered: Modify the Chebyshev center coding with…

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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Modify the Chebyshev center coding with julia in a simple style using vectors, matrices and for loops
# Given matrix A and vector b
A = [2 -1 2; -1 2 4; 1 2 -2; -1 0 0; 0 -1 0; 0 0 -1]
b = [2; 16; 8; 0; 0; 0]

A small sample:
Let t_(l),t_(o),t_(m),t_(n),t_(t),t_(s) be start
times of the associated tasks.
Now use the graph to write the
dependency constraints:
Tasks o,m, and n can't start until task I is finished, and task I
takes 3 days to finish. So the constraints are:
t_(l)+3<=t_(o),t_(l)+3<=t_(m),t_(l)+3<=t_(n)
Task t can't start until tasks m and n are finished. Therefore:
t_(m)+1<=t_(t),t_(n)+2<=t_(t),
Task s can't start until tasks o and t are finished. Therefore:
t_(o)+3<=t_(s),t_(t)+3<=t_(s)

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