What Visualization can do for Data Clustering? Jianping Fan Dept of CS UNC-Charlotte http://webpages.uncc.edu/jfan/itcs4122.html

What visualization can do for data clustering? Before Data Clustering After Data Clustering

Before Data Clustering Provide intuitive observations of data distribution, discrimination of features, data similarity, data manifold, ……..

Before Data Clustering Discrimination power of features Interactive Feature Selection

Before Data Clustering Discrimination power of features Interactive Feature Selection

Before Data Clustering Discrimination power of features Interactive Feature Selection

Before Data Clustering Discrimination power of features Interactive Feature Selection

Before Data Clustering Data Distribution Locations of Cluster Centers

Before Data Clustering Data Distribution Locations of Cluster Centers

Before Data Clustering Data Distribution Locations of Cluster Centers

Before Data Clustering Data Distribution Locations of Cluster Centers

Before Data Clustering Data Distribution Locations of Cluster Centers

Before Data Clustering Data Distribution Locations of Cluster Centers

Before Data Clustering Data Similarity Distance/Similarity Function

Before Data Clustering Data Similarity Distance/Similarity Function

Before Data Clustering Data Manifold Clustering Method

Before Data Clustering Data Manifold Clustering Method

After Data Clustering Data Clusters & Relationships User Assessment & feedbacks

After Data Clustering Data Clusters & Relationships User Assessment & feedbacks

After Data Clustering Data Clusters & Relationships User Assessment & feedbacks

After Data Clustering Data Clusters & Relationships User Assessment & feedbacks

Before & After Data Clustering Do we do things in right way? Different visualization tools for the same data set

Before & After Data Clustering Distance function may play key roles in data visualization Distance function may also play key roles in data clustering How to learn best-matching distance function (metric)?