Social Community Expansion


Summary

The idea of this project is to expand the community in Social Networks. The data was extracted using lost circles. The three major steps of the projects are community detection, identifying influencers in the community and expanding the community with a seed set of influencers. The community expansion was implemented using LEMON algorithm

Project Links

Data Extraction

Graph data of facebook users were extracted using LostCircle , a chrome extension. Data was extracted in graphml format.

Visualistation

Graph was visualised with Lost Circle and Gephi

Lost circle visualization

Social Network Visulaization in lost circle

Lost circle visualization1

Expanded View

Gephi visualisation

Fruchterman Reingold View in Gephi

Gephi visualisation1

MultiGravity ForceAtlas2 View in Gephi

Community

Communities were detected using modularity class in Gephi. Communities visualized manually, in lost circle was in correspondence with the communities obtained from gephi

Gephi visualisation1

Communties identified in Gephi

Modularity class

Distribution of community in Gephi

Lost circle community

Communities identified in Lost Circle

Key Players

Out of 8 communties obtained 2 communities were studied extensively. Community Statistics and Key Players were identified for each of the communities. Key Players were also visualised in lost circle Network

Community statistics

Community Statistics in Gephi

Community statistics graph

Key Player Identification in Gephi

Key player

Key Player visualised in Lost Circle

Community statistics1

Community Statistics in Gephi

Community statistics graph1

Key Player Identification in Gephi

Key player 1

Key Player visualised in Lost Circle

Expansion

This link provides various algorithms for seed set expansion of which LEMON algorithm achieved the state of the art. The two communities studied above were expanded using this algorithm.The expanded communities are shown in the images below

Iss lemon

Seed Expansion for Community 1

Friend lemon

Seed Expansion for Community 2

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