Statistics
Statistics describes the space itself rather than any selection: three scores that say how well separated its clusters are, and a heatmap of how distinct each cluster is from the others. It is the panel to open when you want to know whether the map’s structure is worth trusting before you read anything into a group.
Where to find it
View → Quantitative → Statistics. The panel loads as soon as it opens; there is nothing to select first.
What it shows
Clustering Quality Metrics
Three cards, each colored green, amber, or red by the thresholds below, with a one-line reading of the number:
| Metric | Better when | Green above | Red below |
|---|---|---|---|
| Silhouette Score | Higher | 0.7 | 0.2 |
| Davies-Bouldin | Lower | 0.5 (below) | 2.0 (above) |
| Calinski-Harabasz | Higher | 500 | 50 |
Silhouette measures separation, Davies-Bouldin measures compactness, and Calinski-Harabasz measures overall cluster definition. When the backend has no metrics for the space, all three read 0.000 with “No data available”; that is an absence of data, not a score of zero.
Cluster Separation Quality
A Bokeh heatmap of cluster-to-cluster separation, preceded by a fixed legend explaining how to read it: dark blue and purple areas are well separated clusters, light blue and yellow are moderate, red and orange are overlapping clusters that may need refinement, and a clear diagonal pattern indicates good structure.
Both sections have a header you can click to collapse. Both start expanded.
States
- “Loading statistics…” while the request is in flight.
- “Error loading statistics” with the server’s message when the request fails or the backend reports a problem.
- “No statistics data available” when the response is empty.
- “Cluster heatmap not available” inside the section when clustering has not finished for the space yet. Reopen the panel later.
A space needs at least two points before any of this can be computed.
Limits
- Space-level only. It does not react to your selection, to bags, or to which map tab is focused.
- The results are cached on the server for 30 minutes, so a space that just finished clustering may keep showing the older answer for a while. There is no regenerate button in the panel.
- The Maximize and Download buttons in the chart’s top-right corner are not wired to anything yet.
- There is no agent button in this panel.