26 Questions
What is the first step in the social media analytics cycle according to the text?
Identification
What type of data can be extracted manually according to the text?
Small-size numerical information
What is a mention on Twitter?
When another user includes your username preceded by the @ symbol in a tweet
What does the number of mentions indicate?
Influence or popularity
What is the purpose of the hashtag (#) symbol on Twitter?
To mark keywords or topics in a tweet
Why do businesses use Twitter?
To keep customers informed by disseminating news and information almost in real-time
What is important to do before setting up a Twitter account for business purposes?
Plan and determine the purpose of the Twitter account
What should be established as part of a social media strategy?
The main purpose of using Twitter or any other social media platform
What are nodes in a social network?
People in your network represented by circles/dots.
Define edges in a social network.
Relationships between people shown as lines connecting the nodes.
What is a graph in the context of a social network?
A group of nodes and edges that make up a social network.
What do edges have in addition to connecting nodes?
Edges can be labeled and have additional features.
How are nodes usually represented visually in a social network?
Nodes are visualized as circles/dots.
What does Figure 1 in the text illustrate in terms of social network connections?
Figure 1 shows that Alice is connected to Bob and Chuck, but Bob and Chuck are not connected to each other.
What does the connectivity of a graph measure?
1
In Figure 3.8, what is the connectivity?
2
How is centralization defined in the context of networks?
Centralization is the distribution of centrality measures in a network to understand the role of nodes and compare them.
What happens if a network has high centralization?
One node has extremely high centrality while most others have low centrality.
Explain the relationship between centralization and power.
Betweenness centrality can represent the control one node has in the ability of others to communicate.
How is the centralization of a graph affected by centrality distribution?
If centrality is evenly distributed, centralization of the network is low.
Explain the concept of force-directed layout in graph theory.
Nodes that are closely connected are laid out close to each other, while distant nodes are shown further apart, based on a physical simulation algorithm.
How are nodes and edges treated in a force-directed layout?
Nodes are treated as objects and edges are treated as springs that apply equal force.
What determines the final position of nodes and edges in a force-directed layout?
A simulation of how springs would physically behave, pulling nodes with many connections closer together.
What is the purpose of using force-directed layout algorithms in graph visualization?
To visually represent relationships between nodes based on their connections.
Give an example of another layout algorithm similar to force-directed layout.
Simulated annealing or treating nodes like charged particles.
How does the Yifan Hu layout algorithm differ from the Force Atlas variant?
While both are force-directed layouts, Yifan Hu is one algorithm and Force Atlas is a variant of it.
Test your knowledge on Twitter mentions and hashtags. Learn about the significance of mentions in tracking conversations and the use of hashtags to categorize messages in tweets.
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