weights of training instances, if they are given, and weights that
reflect the distance from ``inst``. Nearer neighbors have a greater
impact on the prediction: the weight is computed as
exp(-t:sup:`2`/s:sup:`2`), where the meaning of `t` depends on the
+, where the meaning of `t` depends on the
setting of :obj:`rank_weight`.
* if :obj:`rank_weight` is :obj:`False`, :obj:`t` is the distance from the