DOC add note about brute force nearest neighbors for string data (#11884)

amueller · jnothman · commit 4cb0859fc353 · 2018-08-22T11:40:25.000+10:00
Follow up on #7820.
diff --git a/doc/faq.rst b/doc/faq.rst
@@ -222,7 +222,10 @@ DBSCAN with Levenshtein distances::
     array([[0],
            [1],
            [2]])
-    >>> dbscan(X, metric=lev_metric, eps=5, min_samples=2)  # doctest: +SKIP
+    >>> # We need to specify algoritum='brute' as the default assumes
+    >>> # a continuous feature space.
+    >>> dbscan(X, metric=lev_metric, eps=5, min_samples=2, algorithm='brute')
+    ... # doctest: +SKIP
     ([0, 1], array([ 0,  0, -1]))
 
 (This uses the third-party edit distance package ``leven``.)
