<frame title="Better knn">
        <list>
        <e>The model (mostly) ignores every known sample except one</e>
<e>So there are extensions</e>
<e>$avg=\frac{1}{N} \sum_i knn_i(x)$</e>
<e>$wavg=\frac{1}{N} \sum_i \frac{knn_i(x)}{i}$</e>
        </list>
        </frame>