Showing posts with label Social Network Analysis. Show all posts
Showing posts with label Social Network Analysis. Show all posts

Monday, June 24, 2024

Social Network Analysis MCQ - Total number of dyadic pairs in a complete undirected network of N actors

Multiple choices questions in social network analysis, graph theory. Interview questions on social network analysis, quiz questions for social network analysis answers explained, Exam questions in graph theory, find the number of dyadic pairs in an undirected complete graph of N actors

Social Network Analaysis MCQ - Total number of dyadic pairs in a complete undirected network of N actors

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1. In an undirected full (complete) network with N actors, the total number of dyadic pairs will be

a) N(N-1)(N-1)/2

b) 2N/N!

c) N!/(N-2)!

d) N(N-1)/2

Answer: (d) N(N-1)/2

 

In undirected full networks with N actors, where the direction of relation between a pair is irrelevant ((because if John marries Amy, Amy also marries John), the total number of dyadic pairs will be N(N-1)/2.

 

Example: the given network is a complete network with 4 nodes (actors). Hence, the total number of dyadic pairs is N(N-1)/2 = 4(3)/2 = 6. The dyadic pairs are (1,2), (1,3), (1,4), (2,3), (2,4), and (3,4).

 

 

Dyads - A dyad consists of a pair of actors and the (possible) tie(s) between them. Dyadic pairs, pairs of two actors in a network, are the most important units of analysis in network studies. Dyadic analysis focus on the properties of pair wise relationships, such as whether ties are reciprocated or not, or whether specific types of multiple relationships tend to occur together.

 

Undirected network – An undirected network is a network in which there is no differentiation between the directions of flows. Undirected network has nodes that do not distinguish between sender and receiver.

 

Undirected complete network – an undirected network in which every node is adjacent to every other node is a complete network. In other words, every node has unique edge to every other node in that network.

 

 

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Related links:

  • Machine learning MCQ home page

  • Machine learning TRUE / FALSE questions home page

  • Computer science engineering quiz questions and answers page

  • Data Warehousing and Data Mining MCQ with answers home

What is dyad?

What is dyadic pairs?

Degree of a node in graph theory

What is undirected graph/network?

What is undirected complete network?

How to find the total number of dyadic pairs in an undirected complete graph?

Solved Q and A in social network analysis and graph theory

 

 

Sunday, June 23, 2024

Social Network Analysis MCQ - What is Mean Nodal Degree

Multiple choices questions in social network analysis, graph theory. Interview questions on social network analysis, quiz questions for social network analysis answers explained, Exam questions in graph theory, what is mean nodal degree?

Social Network Analaysis MCQ - What is Mean Nodal Degree in Social Network Analysis

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1. ______ is a statistic that reports the average degree of the nodes in the graph.

a) Mean nodal degree

b) Nodal degree

c) Nodal density

d) Number of links – 1

Answer: (a) Mean Nodal Degree

 

The mean nodal degree is a statistic that reports the average degree of the nodes in the graph. This is an useful measure to summarize the degrees of all the actors in a social network.

 

Nodal degree or degree of a node in graph theory (useful in social network analysis) is the number of lines that are incident with it. Equivalently, the degree of a node is the number of nodes adjacent to it. The degree of a node is a count that ranges from a minimum of 0, if no nodes are adjacent to a given node, to a maximum of g - 1, if a given node is adjacent to all other nodes in the graph.

 

The density of a graph is the proportion of possible lines that are actually present in the graph.

 

 

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Related links:

  • Machine learning MCQ home page

  • Machine learning TRUE / FALSE questions home page

  • Computer science engineering quiz questions and answers page

  • Data Warehousing and Data Mining MCQ with answers home

What is mean nodal degree?

Purpose of calculating mean nodal degree in a social network

Degree of a node in graph theory

Why do we measure mean nodal degree in graph theory?

What is nodal degree?

What is density of a graph?

Solved Q and A in social network analysis and graph theory

 

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