sph' (default); 'prod'. In multivariate</span>
0089 <span class="comment">%         problems, 'prod' uses a simplified product model which</span>
0090 <span class="comment">%         speeds up computations.</span>
0091 <span class="comment">%</span>
0092 <span class="comment">%  'acri' Criterion for adaptive bandwidth selection.</span>
0093 <span class="comment">%</span>
0094 <span class="comment">%</span>
0095 <span class="comment">%  Derivative Estimation.</span>
0096 <span class="comment">%  Gene