Last change
on this file since 388 was
184,
checked in by sherbold, 13 years ago
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- refactored commands for the training of models (trainDFA, trainMarkovModel, trainPPM) by extracting one common abstract superclass
+ added command updateModel for model reinforcement
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File size:
1.7 KB
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1 | package de.ugoe.cs.eventbench.commands;
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2 |
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3 | import java.util.List;
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4 | import java.util.Random;
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5 |
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6 | import de.ugoe.cs.eventbench.models.PredictionByPartialMatch;
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7 | import de.ugoe.cs.eventbench.models.TrieBasedModel;
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8 | import de.ugoe.cs.util.console.Console;
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9 |
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10 | /**
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11 | * <p>
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12 | * Command that trains Prediction by Partial Match (PPM) models.
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13 | * </p>
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14 | *
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15 | * @author Steffen Herbold
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16 | * @version 2.0
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17 | */
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18 | public class CMDtrainPPM extends AbstractTrainCommand {
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19 |
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20 | /**
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21 | * <p>
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22 | * Escape probability of the PPM model.
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23 | * </p>
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24 | */
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25 | double probEscape;
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26 |
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27 | /**
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28 | * <p>
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29 | * Maximal Markov order of the PPM model.
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30 | * </p>
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31 | */
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32 | int maxOrder;
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33 |
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34 | /**
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35 | * <p>
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36 | * Minimal Markov order of the PPM model. Default: 0
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37 | * </p>
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38 | */
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39 | int minOrder = 0;
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40 |
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41 | /*
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42 | * (non-Javadoc)
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43 | *
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44 | * @see de.ugoe.cs.util.console.Command#help()
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45 | */
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46 | @Override
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47 | public void help() {
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48 | Console.println("Usage: trainPPM <modelName> <sequencesName> <probEscape> <maxOrder> {<minOrder>}");
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49 | }
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50 |
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51 | /**
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52 | * <p>
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53 | * Handles the parameters probEscape, maxOrder, and minOrder.
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54 | * </p>
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55 | *
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56 | * @see de.ugoe.cs.eventbench.commands.AbstractTrainCommand#handleOptionalParameters(java.util.List)
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57 | */
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58 | @Override
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59 | void handleAdditionalParameters(List<Object> parameters) throws Exception {
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60 | probEscape = Double.parseDouble((String) parameters.get(2));
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61 | maxOrder = Integer.parseInt((String) parameters.get(3));
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62 | if (parameters.size() == 5) {
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63 | minOrder = Integer.parseInt((String) parameters.get(4));
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64 | }
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65 | }
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66 |
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67 | /*
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68 | * (non-Javadoc)
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69 | *
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70 | * @see de.ugoe.cs.eventbench.commands.AbstractTrainCommand#createModel()
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71 | */
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72 | @Override
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73 | TrieBasedModel createModel() {
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74 | return new PredictionByPartialMatch(maxOrder, minOrder, new Random(),
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75 | probEscape);
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76 | }
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77 |
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78 | }
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