[1] | 1 | package agents.anac.y2010.AgentSmith;
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| 2 |
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| 3 | import java.util.ArrayList;
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| 4 | import java.util.HashMap;
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| 5 |
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| 6 | import genius.core.Bid;
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| 7 | import genius.core.issue.Issue;
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| 8 | import genius.core.issue.Value;
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| 9 | import genius.core.issue.ValueDiscrete;
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| 10 | import genius.core.issue.ValueInteger;
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| 11 | import genius.core.issue.ValueReal;
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| 12 |
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| 13 | /**
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| 14 | * Model of one issue, takes all values of the opponent on this issue. Then the
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| 15 | * utility and it's weight can be calculated on this issue. In the OpponentModel
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| 16 | * this information is used to determine the utility of the other party.
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| 17 | */
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| 18 | public class IssueModel {
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| 19 | private ArrayList<Value> fValues;
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| 20 | private Issue fIssue;
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| 21 | private Bounds fBounds;
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| 22 |
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| 23 | /**
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| 24 | * Constructor
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| 25 | *
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| 26 | * @param lIssue
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| 27 | */
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| 28 | public IssueModel(Issue lIssue) {
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| 29 | fValues = new ArrayList<Value>();
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| 30 | fIssue = lIssue;
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| 31 | fBounds = new Bounds(fIssue);
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| 32 | }
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| 33 |
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| 34 | /**
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| 35 | * The mean of the values in the values list.
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| 36 | */
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| 37 | public double getAverage() {
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| 38 | double lTotal = 0;
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| 39 | for (Value lWeight : fValues) {
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| 40 | lTotal += getNumberValue(lWeight);
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| 41 | }
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| 42 | return lTotal / fValues.size();
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| 43 | }
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| 44 |
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| 45 | /**
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| 46 | * The standard deviation utility of the issues.
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| 47 | */
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| 48 | public double getDeviation() {
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| 49 | double lIssueAverage = getAverage();
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| 50 | double lTotal = 0;
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| 51 | for (Value lWeight : fValues) {
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| 52 | lTotal += Math.pow(getNumberValue(lWeight) - lIssueAverage, 2);
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| 53 | }
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| 54 |
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| 55 | return Math.sqrt(lTotal / (double) fValues.size());
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| 56 | }
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| 57 |
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| 58 | /**
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| 59 | * Add a value to the list
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| 60 | */
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| 61 | public void addValue(Value pValue) {
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| 62 | fValues.add(pValue);
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| 63 | }
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| 64 |
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| 65 | /**
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| 66 | * The value of an issue in a double type
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| 67 | */
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| 68 | public double getNumberValue(Value pValue) {
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| 69 | switch (fIssue.getType()) {
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| 70 | case DISCRETE:
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| 71 | throw new RuntimeException("No get value for discret");
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| 72 | case REAL:
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| 73 | return ((ValueReal) pValue).getValue();
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| 74 | case INTEGER:
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| 75 | return ((ValueInteger) pValue).getValue();
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| 76 | default:
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| 77 | return 0;
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| 78 | }
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| 79 |
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| 80 | }
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| 81 |
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| 82 | /**
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| 83 | * The utility of a bid, which can be real, integer or discrete
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| 84 | */
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| 85 | public double getUtility(Bid pBid) {
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| 86 | double lUtility = 0;
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| 87 | switch (fIssue.getType()) {
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| 88 | case INTEGER:
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| 89 | lUtility = getRealUtility(pBid);
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| 90 | break;
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| 91 | case REAL:
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| 92 | lUtility = getRealUtility(pBid);
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| 93 | break;
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| 94 | case DISCRETE:
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| 95 | lUtility = getDiscreteUtility(pBid);
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| 96 | break;
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| 97 | }
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| 98 |
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| 99 | return lUtility;
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| 100 | }
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| 101 |
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| 102 | /**
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| 103 | * The utility of if this issue is discrete. Takes the amount of values that
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| 104 | * are the same and divides it by the total amount of values. If there are
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| 105 | * lots of same values as the bid, the utility will be high, else it will be
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| 106 | * low.
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| 107 | */
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| 108 | public double getDiscreteUtility(Bid pBid) {
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| 109 | double lSame = 0;
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| 110 | for (Value lValue : fValues) {
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| 111 | ValueDiscrete lDiscreteValue = (ValueDiscrete) lValue;
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| 112 | if (lDiscreteValue.getValue().equals(
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| 113 | ((ValueDiscrete) getBidValue(pBid)).getValue())) {
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| 114 | lSame++;
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| 115 | }
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| 116 | }
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| 117 | return this.fValues.size() == 0 ? 0 : lSame
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| 118 | / (double) this.fValues.size();
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| 119 | }
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| 120 |
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| 121 | /**
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| 122 | * The utility of a bid in the real or integer case
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| 123 | */
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| 124 | public double getRealUtility(Bid pBid) {
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| 125 | return 1 - Math.abs(fBounds
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| 126 | .normalize(getNumberValue(getBidValue(pBid)))
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| 127 | - fBounds.normalize(getAverage()));
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| 128 | }
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| 129 |
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| 130 | /**
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| 131 | * Get's the importance of this issues utility
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| 132 | */
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| 133 | public double getWeight() {
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| 134 | double lWeight = 0;
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| 135 | switch (fIssue.getType()) {
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| 136 | case INTEGER:
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| 137 | lWeight = getRealWeight();
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| 138 | break;
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| 139 | case REAL:
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| 140 | lWeight = getRealWeight();
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| 141 | break;
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| 142 | case DISCRETE:
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| 143 | lWeight = getDiscreteWeight();
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| 144 | break;
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| 145 | }
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| 146 |
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| 147 | return lWeight;
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| 148 | }
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| 149 |
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| 150 | /**
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| 151 | * Gets the weight of this value. If there are lots of changes, it's not
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| 152 | * important, else it is important.
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| 153 | */
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| 154 | public double getDiscreteWeight() {
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| 155 | HashMap<String, Integer> lCounter = new HashMap<String, Integer>();
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| 156 | for (Value lValue : fValues) {
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| 157 | ValueDiscrete lDiscreteValue = (ValueDiscrete) lValue;
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| 158 | int lCount = lCounter.get(lDiscreteValue.getValue()) != null ? lCounter
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| 159 | .get(lDiscreteValue.getValue()) : 0;
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| 160 | lCount++;
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| 161 | lCounter.put(lDiscreteValue.getValue(), lCount);
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| 162 | }
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| 163 | double lMax = 0;
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| 164 | double lTotal = 0;
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| 165 |
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| 166 | for (int lC : lCounter.values()) {
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| 167 | if (lC > lMax)
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| 168 | lMax = lC;
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| 169 | lTotal += lC;
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| 170 | }
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| 171 |
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| 172 | return lMax / lTotal;
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| 173 | }
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| 174 |
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| 175 | /**
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| 176 | * returns the real (or integer) weight
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| 177 | */
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| 178 | public double getRealWeight() {
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| 179 | return 1 / (1 + getDeviation());
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| 180 | }
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| 181 |
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| 182 | /**
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| 183 | * returns the value of a bid
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| 184 | */
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| 185 | public Value getBidValue(Bid pBid) {
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| 186 | return getBidValueByIssue(pBid, fIssue);
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| 187 | }
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| 188 |
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| 189 | /**
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| 190 | * returns the value of an issue in a bid
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| 191 | */
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| 192 | public static Value getBidValueByIssue(Bid pBid, Issue pIssue) {
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| 193 | Value lValue = null;
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| 194 | try {
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| 195 | lValue = pBid.getValue(pIssue.getNumber());
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| 196 | } catch (Exception e) {
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| 197 | }
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| 198 |
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| 199 | return lValue;
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| 200 |
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| 201 | }
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| 202 | }
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