Differences

This shows you the differences between two versions of the page.

--- sift:principal_component_analysis:k-means_dialog [2024/06/26 20:14] – removed sgranger
+++ sift:principal_component_analysis:k-means_dialog [2025/08/29 13:54] (current) – sgranger
@@ Line 1: / Line 1: @@
+====== K-Means Dialog ======
+{{ :sift_new_kmeans.png}}
+The K-Means button is found on the toolbar and under {{:sift_outlier_detection.png?30}}**Outlier Detection**.
+  * **Number of Clusters**: The number of clusters to be calculated.
+  * **Maximum iterations**: How many times the calculations will be run, more iterations will refine the results at the cost of longer processing times.
+  * **Determine Number of PCs Using Variance Explained**: Can be used to determine the number of PCs (i.e. dimensionality) of the K-Means test using variance explained instead of number of PCs
+  * **Number of PCs (1-25)**: The number of principal components representing the workspace.
+  * **Scale PC Scores to Variance Explained**: Normalizes the scale on the workspace scores using the variance explained.
+  * **Switch Display Style to by Cluster**: Automatically changes the display style to cluster, after running a K-Means Test.
+  * **Use Custom Seed For First Centroid**: Allows the selection of a custom seed instead of a randomly generated one, creates consistent results across runs.
+==== Running a K-Means Test ====
+A more in depth guide on the uses of K-Means and how to run a K-Means test in Sift can be found [[Sift:Tutorials:Run_K-Means|here]].
+==== Note ====
+A label noting the currently selected PCA can be found at the top of the dialog, if the PCA had any missing input data a warning will be displayed with the label as if too many data points were missing from the PCA input it may effect the results of subsequent tests.
+{{:pca_label.png}} \\
+{{:pca_label_warning.png}}