Mercurial > dive4elements > river

annotate artifacts/src/main/java/org/dive4elements/river/artifacts/model/sq/Outlier.java @ 8870:c26fb37899ca

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Introduced groups for modules. Modules marked with the same group-id, will be put together in the ui. Also using now the localization info from the server instead of localizing the modules again on the client side.
author gernotbelger
date Wed, 07 Feb 2018 11:59:13 +0100
parents af13ceeba52a
children 0a5239a1e46e
rev   line source
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1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
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2 * Software engineering by Intevation GmbH
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3 *
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4 * This file is Free Software under the GNU AGPL (>=v3)
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5 * and comes with ABSOLUTELY NO WARRANTY! Check out the
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6 * documentation coming with Dive4Elements River for details.
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7 */
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8
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9 package org.dive4elements.river.artifacts.model.sq;
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10
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11 import org.dive4elements.river.artifacts.math.GrubbsOutlier;
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12 import org.dive4elements.river.artifacts.math.StdDevOutlier;
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13
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14 import java.util.ArrayList;
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15 import java.util.List;
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16
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17 import org.apache.commons.math.MathException;
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18
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19 import org.apache.log4j.Logger;
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20
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21 public class Outlier
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22 {
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23 private static Logger log = Logger.getLogger(Outlier.class);
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24
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25 private static final String GRUBBS = "outlier.method.grubbs";
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26
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27 //private static final String STD_DEV = "std-dev";
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28
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29 public interface Callback {
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30
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31 void initialize(List<SQ> sqs) throws MathException;
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32
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33 double eval(SQ sq);
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34
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35 void iterationFinished(
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36 double stdDev,
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37 SQ outlier,
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38 List<SQ> remaining);
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39
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40 } // interface Callback
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41
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42 public static void detectOutliers(
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43 Callback callback,
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44 List<SQ> sqs,
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45 double stdDevFactor,
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46 String method
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47 )
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48 throws MathException
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49 {
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50 boolean debug = log.isDebugEnabled();
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51
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52 if (method == null) {
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53 method = "std-dev";
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54 }
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55
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56 if (debug) {
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57 log.debug("stdDevFactor: " + stdDevFactor);
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58 log.debug("method: " + method);
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59 }
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60
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61 List<SQ> data = new ArrayList<SQ>(sqs);
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62
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63 double [] stdDev = new double[1];
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64
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65 boolean useGrubbs = method.equals(GRUBBS);
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66
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67 if (useGrubbs) {
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68 stdDevFactor = Math.max(0d, Math.min(stdDevFactor/100d, 1d));
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69 }
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70
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71 List<Double> values = new ArrayList<Double>(data.size());
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72
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73 while (data.size() > 2) {
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74
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75 callback.initialize(data);
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76
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77 for (SQ sq: data) {
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78 values.add(callback.eval(sq));
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79 }
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80
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81 Integer ndx = useGrubbs
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82 ? GrubbsOutlier.findOutlier(values, stdDevFactor, stdDev)
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83 : StdDevOutlier.findOutlier(values, stdDevFactor, stdDev);
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84
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85 if (ndx == null) {
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86 callback.iterationFinished(stdDev[0], null, data);
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87 break;
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88 }
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89
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90 SQ outlier = data.remove(ndx.intValue());
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91 if (debug) {
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92 log.debug("stdDev: " + stdDev[0]);
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93 log.debug("removed " + ndx +
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94 "; S: " + outlier.getS() + " Q: " + outlier.getQ());
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95 }
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96 callback.iterationFinished(stdDev[0], outlier, data);
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97 values.clear();
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98 }
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99 }
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100 }
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101 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org