Using reStructuredText citations
@@ -279,12 +279,7 @@ Approximate Aggregate Functions
Computes an approximate histogram with up to ``buckets`` number of buckets
for all ``value``\ s with a per-item weight of ``weight``. The keys of the
returned map are roughly the center of the bin, and the entry is the total
- weight of the bin. The algorithm is based loosely on:
-
- .. code-block:: none
-
- Yael Ben-Haim and Elad Tom-Tov, "A streaming parallel decision tree algorithm",
- J. Machine Learning Research 11 (2010), pp. 849--872.
+ weight of the bin. The algorithm is based loosely on [BenHaimTomTov2010]_.
``buckets`` must be a ``bigint``. ``value`` and ``weight`` must be numeric.
@@ -447,3 +442,8 @@ Statistical Aggregate Functions
.. function:: var_samp(x) -> double
Returns the sample variance of all input values.
+
+--------------------------
+
+ .. [BenHaimTomTov2010] Yael Ben-Haim and Elad Tom-Tov, "A streaming parallel decision tree algorithm",
+ J. Machine Learning Research 11 (2010), pp. 849--872.
