1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
|
# Copyright (C) 2006, 2007 Michael Creel <michael.creel@uab.es>
# under the terms of the GNU General Public License.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; If not, see <http://www.gnu.org/licenses/>.
# __kernel_weights: for internal use by kernel_regression and kernel_density. There
# is also a faster .oct file version that should be be found automatically.
function W = __kernel_weights(data, evalpoints, kernel)
# calculate distances
nn = rows(evalpoints);
n = rows(data);
W = zeros(nn,n);
for i = 1:nn
zz = data - repmat(evalpoints(i,:), n, 1);
zz = feval(kernel, zz);
W(i,:) = zz';
endfor
endfunction
|
