The fuzzy c-means algorithm is a well-known unsupervised learning technique that can be used to reveal the underlying structure of the data. Fuzzy clustering allows each data point to belong to several clusters, with a degree of membership to each one.
Make sure that the input data is normalized to obtain better clustering results.
The list of attributes to use can be set in the second tab of the dialog.
The first output datatable provides the original datatable with the cluster memberships to each cluster. The second datatable provides the values of the cluster prototypes.
Additionally, it is possible to induce a noise cluster, to detect noise in the dataset, based on the approach from R. N. Dave: 'Characterization and detection of noise in clustering'.
- Type: Data Datatable with training data. Make sure that the data are normalized!
- Type: Data Input table extended by cluster membership
- Type: PMML Cluster centers
Analytics > Mining > Clustering
Make sure to have this extension installed:
Update site for KNIME Analytics Platform 3.7:
KNIME Analytics Platform 3.7 Update Site