blob: e3c23b2ae04461c813ad108a74015a3ca808b897 (
plain)
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
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
|
package de.lmu.ifi.dbs.elki.math.statistics;
/*
This file is part of ELKI:
Environment for Developing KDD-Applications Supported by Index-Structures
Copyright (C) 2012
Ludwig-Maximilians-Universität München
Lehr- und Forschungseinheit für Datenbanksysteme
ELKI Development Team
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 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 Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* Triangular kernel density estimator.
*
* @author Erich Schubert
*/
public final class TriangularKernelDensityFunction implements KernelDensityFunction {
@Override
public double density(double delta) {
if(delta < 1) {
return 1 - delta;
}
return 0;
}
/**
* Private, empty constructor. Use the static instance!
*/
private TriangularKernelDensityFunction() {
// Nothing to do.
}
/**
* Static instance.
*/
public static final TriangularKernelDensityFunction KERNEL = new TriangularKernelDensityFunction();
}
|