tains the online learning technique of [<a href="doc_spams010.html#mairal7">20</a>, <a href="doc_spams010.html#mairal9">21</a>] and its
variants for solving various matrix factorization problems:
<ul class="itemize"><li class="li-itemize">
dictionary Learning for sparse coding;
</li><li class="li-itemize">sparse principal component analysis (seen as a sparse matrix factorization problem);
</li><li class="li-itemize">non-negative matrix factorization;
</li><li class="li-itemize">non-negative sparse coding;
<