Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/math/StdDevOutlier.java @ 5162:94c3eb995bf6

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Fixed broken insert statements for axis_kinds.
author Sascha L. Teichmann <teichmann@intevation.de>
date Fri, 01 Mar 2013 20:52:31 +0100
parents 846b0441f905
children
rev   line source
4794
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
1 package de.intevation.flys.artifacts.math;
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
2
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
3 import java.util.List;
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
4
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
5 import org.apache.commons.math.stat.descriptive.moment.StandardDeviation;
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
6
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
7 import org.apache.log4j.Logger;
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
8
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
9 public class StdDevOutlier
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
10 {
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
11 public static final double DEFAULT_FACTOR = 3;
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
12
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
13 private static Logger log = Logger.getLogger(StdDevOutlier.class);
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
14
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
15 protected StdDevOutlier() {
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
16 }
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
17
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
18 public static Integer findOutlier(List<Double> values) {
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
19 return findOutlier(values, DEFAULT_FACTOR, null);
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
20 }
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
21
4795
8ee270a3ef25 Small code cleanups in S/Q outlier tests.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4794
diff changeset
22 public static Integer findOutlier(
8ee270a3ef25 Small code cleanups in S/Q outlier tests.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4794
diff changeset
23 List<Double> values,
4816
846b0441f905 Removed trailing whitespace.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4795
diff changeset
24 double factor,
4795
8ee270a3ef25 Small code cleanups in S/Q outlier tests.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4794
diff changeset
25 double [] stdDevResult
8ee270a3ef25 Small code cleanups in S/Q outlier tests.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4794
diff changeset
26 ) {
4794
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
27 boolean debug = log.isDebugEnabled();
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
28
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
29 if (debug) {
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
30 log.debug("factor for std dev: " + factor);
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
31 }
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
32
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
33 int N = values.size();
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
34
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
35 if (debug) {
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
36 log.debug("Values to check: " + N);
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
37 }
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
38
4795
8ee270a3ef25 Small code cleanups in S/Q outlier tests.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4794
diff changeset
39 if (N < 3) {
4794
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
40 return null;
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
41 }
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
42
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
43 StandardDeviation stdDev = new StandardDeviation();
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
44
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
45 double maxValue = -Double.MAX_VALUE;
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
46 int maxIndex = -1;
4795
8ee270a3ef25 Small code cleanups in S/Q outlier tests.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4794
diff changeset
47 for (int i = N-1; i >= 0; --i) {
4794
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
48 double value = Math.abs(values.get(i));
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
49 stdDev.increment(value);
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
50 if (value > maxValue) {
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
51 maxValue = value;
4795
8ee270a3ef25 Small code cleanups in S/Q outlier tests.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4794
diff changeset
52 maxIndex = i;
4794
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
53 }
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
54 }
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
55
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
56 double sd = stdDev.getResult();
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
57
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
58 double accepted = factor * sd;
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
59
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
60 if (debug) {
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
61 log.debug("std dev: " + stdDev);
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
62 log.debug("accepted: " + accepted);
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
63 log.debug("max value: " + maxValue);
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
64 }
4795
8ee270a3ef25 Small code cleanups in S/Q outlier tests.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4794
diff changeset
65
4794
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
66 if (stdDevResult != null) {
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
67 stdDevResult[0] = sd;
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
68 }
4795
8ee270a3ef25 Small code cleanups in S/Q outlier tests.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 4794
diff changeset
69
4794
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
70 return maxValue > accepted ? maxIndex : null;
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
71 }
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
72 }
a7d080347ac3 MINFO: Allow two methods for outlier test in SQ relation.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
73 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org