| Output | Description |
|---|---|
| Results message | Contains information about each cluster. |
| OutputTable | Contains cluster centroids. Schema depends on UnpackColumns syntax element. |
| ClusterAssignmentTable | [Optional] Contains clusters themselves. |
Results Message Schema
| Column | Data Type | Description |
|---|---|---|
| clusterid | INTEGER | Cluster identifier of centroid. |
| mean | VARCHAR | Concatenation of means in centroid. For example, means 3, 5, and 6 are represented as '3 5 6'. The UnpackColumns syntax element does not affect this column. |
| size | INTEGER | Number of points in cluster. |
| withinss | INTEGER | Within-cluster-sum-of-squares—sum of squared differences of each point from its cluster centroid. |
After the information described by the preceding schema, the results message has the following information:
| Label | Value |
|---|---|
| Converged : | 'True' if algorithm converged, 'False' otherwise. |
| Number of iterations : | Number of iterations algorithm performed. |
| Number of clusters : | Number of clusters. |
| Successfully created Output table | |
| Successfully created Clustered Output table | [Column appears only with ClusterAssignmentTable.] |
| Total_WithinSS : | Sum of withinss values in preceding table. |
| Between_SS : | Between sum of squares—sum of squared distances of centroids to global mean, where squared distance of each mean to global mean is multiplied by number of data points it represents. |
OutputTable Schema, UnpackColumns ('false') (Default)
| Column | Data Type | Description |
|---|---|---|
| clusterid | INTEGER | Cluster identifier of centroid. |
| mean | VARCHAR | Concatenation of means in centroid. For example, means 3, 5, and 6 are represented as '3 5 6'. |
| size | INTEGER | Number of points in cluster. |
| withinss | INTEGER | Within-cluster-sum-of-squares—sum of squared differences of each point from its cluster centroid. |
OutputTable Schema, UnpackColumns ('true')
| Column | Data Type | Description |
|---|---|---|
| clusterid | INTEGER | Cluster identifier of centroid. |
| feature_i | INTEGER or VARCHAR | [Column appears once for each feature.] Mean for feature i (name of InputTable column). |
| size | INTEGER | Number of points in cluster. |
| withinss | INTEGER | Within-cluster-sum-of-squares—sum of squared differences of each point from its cluster centroid. |
ClusterAssignmentTable Table Schema
| Column | Data Type | Description |
|---|---|---|
| pointid | INTEGER | Identifier of user or item (id from InputTable). |
| centroidid | INTEGER | Identifier of centroid for pointid. |