f="doc_spams010.html#zou">39</a>];
</li><li class="li-itemize">Fused Lasso [<a href="doc_spams010.html#tibshirani2">32</a>];
</li><li class="li-itemize">tree-structured sum of ℓ<sub>2</sub>-norms (see [<a href="doc_spams010.html#jenatton3">15</a>, <a href="doc_spams010.html#jenatton4">16</a>]);
</li><li class="li-itemize">tree-structured sum of ℓ<sub>∞</sub>-norms (see [<a href="doc_spams010.html#jenatton3">15</a>, <a href="doc_spams010.html#jenatton4">16</a>]);
</li><li class="li-itemize">general 