Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

Consider the Vertex Coloring Problem in which we assign different colors to the adjacent vertices on a given graph G = (V, E). The objective

  1. Consider the Vertex Coloring Problem in which we assign different

    colors to the adjacent vertices on a given graph G = (V, E). The objective is to color the

    vertices of the graph using minimum number of colors.

    Input: A graph G = (V, E), where V is the set of vertices and E is the set of edges of the graph G.

    Output: Color assignments of the vertices using minimum number of colors.

    Ex: For the graph G in Figure 1, a vertex is a node in the graph and the set of vertices is V = {v1, v2, ..., v10}. An edge is the line between two vertices and the set of edges is

    E = {(v1, v2), (v1, v5), (v1, v6),(v2, v3), (v2, v7), ..., (v7, v10)}.

    The vertices v1 and v2 are adjacent since there is an edge (v1, v2) between them. On the other hand, v1 and v7 are not adjacent since there is no edge (v1, v7) in the graph. Notice that the adjacent vertices v1 and v2 have different colors (red and green, respectively), whereas non-adjacent vertices v1 and v7 can have the same color (red). We observe that we can color the vertices of the graph G in Figure 1 with 3 different colors, i.e., red, green, blue.

    1. (5 pts) Discuss the problem complexity of the Vertex Coloring Problem. Is it in P or MP? Is it an easy or a hard problem?
    2. (20 pts) Design a greedy algorithm that solves the Verter Coloring Problem using a greedy color selection rule. Report the pseudocode of your algorithm
    3. (5 pts) What is the time complexity of your algorithm? Is it efficient? Can your algorithm find the optimum solution?
    4. (20 pts) Implement your algorithm in Python. Use the input given in the example and report the console outputs. Report your Python code scripts.

image text in transcribed
Figure 1: Vertex color assignment on a graph G

Step by Step Solution

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image

Step: 3

blur-text-image

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Spatial Databases A Tour

Authors: Shashi Shekhar, Sanjay Chawla

1st Edition

0130174807, 978-0130174802

More Books

Students also viewed these Databases questions

Question

12-18. Why do companies segment markets?

Answered: 1 week ago

Question

It can be physically harmful.

Answered: 1 week ago

Question

What are negative messages? (Objective 1)

Answered: 1 week ago