 # Question: How Is Graph Theory Used In The Real World?

## How is graph theory used today?

Graph theoretical concepts are widely used to study and model various applications, in different areas.

They include, study of molecules, construction of bonds in chemistry and the study of atoms.

Similarly, graph theory is used in sociology for example to measure actors prestige or to explore diffusion mechanisms..

## What is the purpose of graph theory?

In mathematics, graph theory is the study of graphs, which are mathematical structures used to model pairwise relations between objects. A graph in this context is made up of vertices (also called nodes or points) which are connected by edges (also called links or lines).

## What is mean by graph theory?

Definition: Graph is a mathematical representation of a network and it describes the relationship between lines and points. A graph consists of some points and lines between them. Description: A graph ‘G’ is a set of vertex, called nodes ‘v’ which are connected by edges, called links ‘e’. …

## What is BFS and DFS?

BFS stands for Breadth First Search. DFS stands for Depth First Search. 2. BFS(Breadth First Search) uses Queue data structure for finding the shortest path. DFS(Depth First Search) uses Stack data structure.

## Who uses line graphs?

Line graphs are used to track changes over short and long periods of time. When smaller changes exist, line graphs are better to use than bar graphs. Line graphs can also be used to compare changes over the same period of time for more than one group.

## Can you site any other real life situations that use linear equations in two variables?

Linear equations use one or more variables where one variable is dependent on the other. Almost any situation where there is an unknown quantity can be represented by a linear equation, like figuring out income over time, calculating mileage rates, or predicting profit.

## What is graph and its application?

A graph is a non-linear data structure, which consists of vertices(or nodes) connected by edges(or arcs) where edges may be directed or undirected. In Computer science graphs are used to represent the flow of computation.

## Where are graphs used in the real world?

Bar Charts and Column Graphs seem to be used the most; however Pie Charts and Line Graphs are also encountered. Graphs are extremely important in Sales, Marketing, Finance, Insurance, Psychology, and Legal Professions.

## Who is the father of graph theory?

Eulerian refers to the Swiss mathematician Leonhard Euler, who invented graph theory in the 18th century.

## How will you know that the graph has a loop?

For an undirected graph, the degree of a vertex is equal to the number of adjacent vertices. A special case is a loop, which adds two to the degree. … In other words, a vertex with a loop “sees” itself as an adjacent vertex from both ends of the edge thus adding two, not one, to the degree.

## How many types of graph are there?

There are several different types of charts and graphs. The four most common are probably line graphs, bar graphs and histograms, pie charts, and Cartesian graphs.

## How are bar graphs useful in real life?

Bar graphs are an extremely effective visual to use in presentations and reports. They are popular because they allow the reader to recognize patterns or trends far more easily than looking at a table of numerical data.

## Why are line plots important?

Most people are familiar with bar graphs, line graphs, and circle graphs. … A line plot is a graph that shows frequency of data along a number line. It is best to use a line plot when comparing fewer than 25 numbers. It is a quick, simple way to organize data.

## What graph means?

In math, a graph can be defined as a pictorial representation or a diagram that represents data or values in an organized manner. The points on the graph often represent the relationship between two or more things.

## Which is better DFS or BFS?

BFS uses Queue to find the shortest path. DFS uses Stack to find the shortest path. BFS is better when target is closer to Source. … DFS is faster than BFS.

## How are line graphs used in real life?

Straight Line Graphs play an important part in our modern lives. They are used extensively in Sales and Marketing, Economics, Business, Psychology, Science and Medicine. Here is a Graph from a medical study of infertility that has several straight line portions in it.

## Is graph theory used in data science?

The Data Science and Analytics field has also used Graphs to model various structures and problems. As a Data Scientist, you should be able to solve problems in an efficient manner and Graphs provide a mechanism to do that in cases where the data is arranged in a specific way.

## What is Graph example?

A graph is a common data structure that consists of a finite set of nodes (or vertices) and a set of edges connecting them. … For example, a single user in Facebook can be represented as a node (vertex) while their connection with others can be represented as an edge between nodes.

## Why BFS is slower than DFS?

Comparing BFS and DFS, the big advantage of DFS is that it has much lower memory requirements than BFS, because it’s not necessary to store all of the child pointers at each level. … Then, a BFS would usually be faster than a DFS. So, the advantages of either vary depending on the data and what you’re looking for.

## Why BFS takes more memory than DFS?

For implementation, BFS uses a queue data structure, while DFS uses a stack. BFS uses a larger amount of memory because it expands all children of a vertex and keeps them in memory. It stores the pointers to a level’s child nodes while searching each level to remember where it should go when it reaches a leaf node.