Use bigger datasets for benchmarks

kdtree/benchmarks/config.yml

@@ -9,16 +9,16 @@ n_trials: 3
 datasets:
   - n_samples_train: 1e6
     n_samples_test: 1e6
-    n_features: 5
-  - n_samples_train: 1e6
+    n_features: 50
+  - n_samples_train: 1e7
     n_samples_test: 1e6
-    n_features: 10
-  - n_samples_train: 1e6
+    n_features: 50
+  - n_samples_train: 1e8
     n_samples_test: 1e6
     n_features: 50
-  - n_samples_train: 1e6
+  - n_samples_train: 1e9
     n_samples_test: 1e6
-    n_features: 100
+    n_features: 50
 
 leaf_sizes:
   - 64