Add clustering and preprocessing docs

Author: cjnolet

fern/docs.yml

@@ -67,6 +67,29 @@ navigation:
             path: "./pages/vector_databases_vs_vector_search.md"
           - page: "Tuning Indexes"
             path: "./pages/tuning_guide.md"
+      - page: "Integrations"
+        path: "./pages/integrations.md"
+      - page: "Use-cases"
+        path: "./pages/use_cases.md"
+      - page: "Using cuVS APIs"
+        hidden: true
+        path: "./pages/working_with_ann_indexes.md"
+  - section: "User Guide"
+    contents:
+      - page: "cuVS API Basics"
+        hidden: true
+        path: "./pages/api_basics.md"
+      - page: "Interoperability"
+        hidden: true
+        path: "./pages/api_interoperability.md"
+      - section: "Clustering Guide"
+        contents:
+          - page: "K-Means"
+            path: "./pages/cluster/kmeans.md"
+          - page: "Single-linkage"
+            path: "./pages/cluster/single_linkage.md"
+          - page: "Spectral Clustering"
+            path: "./pages/cluster/spectral.md"
       - section: "Indexing Guide"
         path: "./pages/neighbors/neighbors.md"
         contents:
@@ -86,20 +109,17 @@ navigation:
             path: "./pages/neighbors/vamana.md"
           - page: "All-neighbors"
             path: "./pages/neighbors/all_neighbors.md"
-      - page: "Using cuVS APIs"
-        hidden: true
-        path: "./pages/working_with_ann_indexes.md"
-  - section: "User Guide"
-    contents:
-      - page: "cuVS API Basics"
-        hidden: true
-        path: "./pages/api_basics.md"
-      - page: "Interoperability"
-        hidden: true
-        path: "./pages/api_interoperability.md"
-      - page: "Integrations"
-        path: "./pages/integrations.md"
-      - section: "Benchmarking"
+      - section: "Preprocessing Guide"
+        contents:
+          - page: "Binary Quantizer"
+            path: "./pages/preprocessing/binary_quantizer.md"
+          - page: "PCA"
+            path: "./pages/preprocessing/pca.md"
+          - page: "Product Quantization"
+            path: "./pages/preprocessing/product_quantization.md"
+          - page: "Scalar Quantizer"
+            path: "./pages/preprocessing/scalar_quantizer.md"
+      - section: "Benchmarking Guide"
         contents:
           - page: "Methologies"
             path: "./pages/comparing_indexes.md"