Network Analysis

Network Analysis basics for J480/580

Transcript

1. N E T W O R K A N A LY S I S
2. T Y P E S O F N E T W O R K A N A LY S E S • Social Network Analysis: Structure of Relationships • Narrative Network Analysis: Method of Text Analysis • Link Analysis: Concerned with Association Between Objects
3. L A N G U A G E O F N E T W O R K S N O D E S A C T O R S V E RT I C E S E D G E S R E L AT I O N S L I N K S T I E S A R C S
4. N E T W O R K L AY O U T S
5. N E T W O R K L AY O U T S
6. K E Y M E A S U R E S •Diameter - the largest geodesic distance in the (connected) network •Density - the proportion of all possible ties that are actually present •Reciprocity - the likelihood of edges in a directed network to be mutually linked •Modularity - the strength of division of a network into clusters •Degree Centrality – risk of node catching whatever is flowing through a network •Closeness Centrality – average length of the shortest path between the node and all other nodes in the graph •Betweenness Centrality - quantifies the number of times a node acts as a bridge along the shortest path between two other nodes •Eigenvector Centrality - a measure of the influence of a node in a network •
7. # L I F E A S A J S T U D E N T Diameter: 7 Density: 0.0036 or .3% Reciprocity: 0.184 Large diameter Not very dense One-way connections Takeaway: A few key hubs related to the hashtag use with connection among and between. Definitely a conversation happening that’s worth fostering.
8. # L I F E A S A J S T U D E N T Diameter: 7 Density: 0.0036 or .3% Reciprocity: 0.184 Large diameter Loose
9. # G O D U C K S Diameter: 5 Density: 0.004 or .4% Reciprocity: 0.015 Large diameter Loose More one-way connections
10. @ G O D U C K S Diameter: 14 Density: 0.0042 or .2% Reciprocity: 0.02 Large diameter Loose More one-way connections
11. @ D U T C H B R O S Diameter: 10 Density: 0.00070 Reciprocity: 0.038 Large diameter Takeaway: Lots of diverse, unconnected conversations. But some clear hubs of people worth exploring to determine what they are talking about.