Mercurial > dive4elements > river
annotate artifacts/src/main/java/org/dive4elements/river/artifacts/model/sq/Outlier.java @ 8605:b0e5a2ce0b09
(issue1750) Fix id handling with oracle
On oracle the id is returned as BigDecimal. This could probably
be done better with hibernate but checking the Object also works.
author | Andre Heinecke <andre.heinecke@intevation.de> |
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date | Fri, 20 Mar 2015 18:42:00 +0100 |
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children | 0a5239a1e46e |
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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 : |