Category Archives: Data Mining

Plotting correlations matrices in R Package

Correlations matrices give us relevant information, but sometimes it is hard to visualize them. R Package provides several functions to plot correlations matrices. Following there is a very simple but effective solution for plotting a correlation matrix using package “corrplot”. And … Continue reading

Posted in Data Mining | Tagged , , | Leave a comment

SoMeRis 2015 (social media and risk)

Slides of our paper: J. Casas-Roma and F. Rousseau (2015). Community-preserving generalization of social networks. Proceedings of the social media and risk ASONAM 2015 workshop (SoMeRis ’15) SoMeRis2015-jcasasr-presentation

Posted in Data Mining, Graph Mining, Privacy-preserving, Social network analysis | Leave a comment

Plotting the coreness of a network with R and igraph

Briefly, the k-core of a graph corresponds to the maximal connected subgraph whose vertices are at least of degree k within the subgraph. It is an interesting tool to analyze the connectivity of a network, and it is used in several … Continue reading

Posted in Data Mining, Graph Mining | Tagged , , | 1 Comment