From b1fb2631d756dd1fa7fb55a35f5b7d6226779595 Mon Sep 17 00:00:00 2001
From: Nikolaus Huber <nikolaus.huber@uni-wuerzburg.de>
Date: Tue, 14 May 2013 11:24:48 +0000
Subject: [PATCH] evaluation interface introduced
git-svn-id: https://se1.informatik.uni-wuerzburg.de/usvn/svn/code/code/DMM/trunk@11541 9e42b895-fcda-4063-8a3b-11be15eb1bbd
---
.../adaptation/evaluation/IEvaluator.java | 20 ++++++
.../WeightingFunctionEvaluator.java | 32 ++++++++++
.../IWeightingFunctionCalculator.java | 24 +++++++
.../RandomWeightCalculator.java | 19 ++++++
.../WeightedSumCalculator.java | 62 +++++++++++++++++++
5 files changed, 157 insertions(+)
create mode 100644 edu.kit.ipd.descartes.adaptation/src/edu/kit/ipd/descartes/adaptation/evaluation/IEvaluator.java
create mode 100644 edu.kit.ipd.descartes.adaptation/src/edu/kit/ipd/descartes/adaptation/evaluation/WeightingFunctionEvaluator.java
create mode 100644 edu.kit.ipd.descartes.adaptation/src/edu/kit/ipd/descartes/adaptation/evaluation/weightingfunction/IWeightingFunctionCalculator.java
create mode 100644 edu.kit.ipd.descartes.adaptation/src/edu/kit/ipd/descartes/adaptation/evaluation/weightingfunction/RandomWeightCalculator.java
create mode 100644 edu.kit.ipd.descartes.adaptation/src/edu/kit/ipd/descartes/adaptation/evaluation/weightingfunction/WeightedSumCalculator.java
diff --git a/edu.kit.ipd.descartes.adaptation/src/edu/kit/ipd/descartes/adaptation/evaluation/IEvaluator.java b/edu.kit.ipd.descartes.adaptation/src/edu/kit/ipd/descartes/adaptation/evaluation/IEvaluator.java
new file mode 100644
index 00000000..c789ef4d
--- /dev/null
+++ b/edu.kit.ipd.descartes.adaptation/src/edu/kit/ipd/descartes/adaptation/evaluation/IEvaluator.java
@@ -0,0 +1,20 @@
+package edu.kit.ipd.descartes.adaptation.evaluation;
+
+import edu.kit.ipd.descartes.mm.adaptation.WeightedTactic;
+
+/**
+ * Evaluates a tactic.
+ *
+ * @author nhuber
+ *
+ */
+public interface IEvaluator {
+
+ /**
+ * Evaluates the impact of a {@link WeightedTactic}.
+ *
+ * @param wt The weighted tactic to evaluate
+ */
+ public void evaluate(WeightedTactic wt);
+
+}
diff --git a/edu.kit.ipd.descartes.adaptation/src/edu/kit/ipd/descartes/adaptation/evaluation/WeightingFunctionEvaluator.java b/edu.kit.ipd.descartes.adaptation/src/edu/kit/ipd/descartes/adaptation/evaluation/WeightingFunctionEvaluator.java
new file mode 100644
index 00000000..1aa5c0db
--- /dev/null
+++ b/edu.kit.ipd.descartes.adaptation/src/edu/kit/ipd/descartes/adaptation/evaluation/WeightingFunctionEvaluator.java
@@ -0,0 +1,32 @@
+package edu.kit.ipd.descartes.adaptation.evaluation;
+
+import edu.kit.ipd.descartes.adaptation.evaluation.weightingfunction.WeightedSumCalculator;
+import edu.kit.ipd.descartes.mm.adaptation.WeightedTactic;
+import edu.kit.ipd.descartes.mm.adaptation.WeightingFunction;
+
+/**
+ * Evaluates a given {@link WeightedTactic} using the weighted tactic's {@link WeightingFunction}.
+ *
+ * @author nhuber
+ *
+ */
+public class WeightingFunctionEvaluator implements IEvaluator {
+
+ private WeightedSumCalculator calculator = null;
+
+ public WeightingFunctionEvaluator() {
+ calculator = new WeightedSumCalculator();
+ }
+
+ /*
+ * (non-Javadoc)
+ *
+ * @see edu.kit.ipd.descartes.adaptation.evaluation.IEvaluator#evaluate()
+ */
+ @Override
+ public void evaluate(WeightedTactic tactic) {
+ WeightingFunction f = tactic.getParentStrategy().getWeightingFunction();
+ calculator.setWeightingFunction(f);
+ calculator.updateWeight(tactic);
+ }
+}
diff --git a/edu.kit.ipd.descartes.adaptation/src/edu/kit/ipd/descartes/adaptation/evaluation/weightingfunction/IWeightingFunctionCalculator.java b/edu.kit.ipd.descartes.adaptation/src/edu/kit/ipd/descartes/adaptation/evaluation/weightingfunction/IWeightingFunctionCalculator.java
new file mode 100644
index 00000000..72068f51
--- /dev/null
+++ b/edu.kit.ipd.descartes.adaptation/src/edu/kit/ipd/descartes/adaptation/evaluation/weightingfunction/IWeightingFunctionCalculator.java
@@ -0,0 +1,24 @@
+package edu.kit.ipd.descartes.adaptation.weightingfunction;
+
+import edu.kit.ipd.descartes.mm.adaptation.Tactic;
+import edu.kit.ipd.descartes.mm.adaptation.WeightedTactic;
+
+public interface IWeightingFunctionCalculator {
+
+ /**
+ * Calculates the new weight of the given {@link Tactic}.
+ *
+ * @param impact
+ * @return
+ */
+ double calculateWeight(WeightedTactic weightedTactic);
+
+ /**
+ * Calculates and sets the new weight of the given {@link WeightedTactic}.
+ *
+ * @param impact
+ * @return
+ */
+ void updateWeight(WeightedTactic weightedTactic);
+
+}
diff --git a/edu.kit.ipd.descartes.adaptation/src/edu/kit/ipd/descartes/adaptation/evaluation/weightingfunction/RandomWeightCalculator.java b/edu.kit.ipd.descartes.adaptation/src/edu/kit/ipd/descartes/adaptation/evaluation/weightingfunction/RandomWeightCalculator.java
new file mode 100644
index 00000000..244fae63
--- /dev/null
+++ b/edu.kit.ipd.descartes.adaptation/src/edu/kit/ipd/descartes/adaptation/evaluation/weightingfunction/RandomWeightCalculator.java
@@ -0,0 +1,19 @@
+package edu.kit.ipd.descartes.adaptation.weightingfunction;
+
+import java.util.Random;
+
+import edu.kit.ipd.descartes.mm.adaptation.WeightedTactic;
+
+public class RandomWeightCalculator implements IWeightingFunctionCalculator {
+
+ @Override
+ public double calculateWeight(WeightedTactic weightedTactic) {
+ Random r = new Random(System.currentTimeMillis());
+ return r.nextDouble();
+ }
+
+ @Override
+ public void updateWeight(WeightedTactic weightedTactic) {
+ weightedTactic.setCurrentWeight(calculateWeight(weightedTactic));
+ }
+}
diff --git a/edu.kit.ipd.descartes.adaptation/src/edu/kit/ipd/descartes/adaptation/evaluation/weightingfunction/WeightedSumCalculator.java b/edu.kit.ipd.descartes.adaptation/src/edu/kit/ipd/descartes/adaptation/evaluation/weightingfunction/WeightedSumCalculator.java
new file mode 100644
index 00000000..67c304e3
--- /dev/null
+++ b/edu.kit.ipd.descartes.adaptation/src/edu/kit/ipd/descartes/adaptation/evaluation/weightingfunction/WeightedSumCalculator.java
@@ -0,0 +1,62 @@
+package edu.kit.ipd.descartes.adaptation.weightingfunction;
+
+import org.apache.log4j.Logger;
+import org.eclipse.emf.common.util.EList;
+
+import edu.kit.ipd.descartes.adaptation.model.dmm.util.WeightingFunctionHelper;
+import edu.kit.ipd.descartes.mm.adaptation.WeightedTactic;
+import edu.kit.ipd.descartes.mm.adaptation.WeightingFunction;
+import edu.kit.ipd.descartes.perfdatarepo.Impact;
+import edu.kit.ipd.descartes.perfdatarepo.MetricValue;
+import edu.kit.ipd.descartes.perfdatarepo.Result;
+
+public class WeightedSumCalculator implements IWeightingFunctionCalculator {
+
+ private Logger logger = Logger.getLogger(WeightedSumCalculator.class);
+ private WeightingFunction weightingFunction = null;
+
+ public WeightedSumCalculator(WeightingFunction weightingFunction) {
+ this.weightingFunction = weightingFunction;
+ }
+
+ @Override
+ public double calculateWeight(WeightedTactic weightedtactic) {
+
+ double newWeight = 0.0;
+ Impact impact = weightedtactic.getLastImpact();
+ Result before = impact.getBefore();
+ Result after = impact.getAfter();
+ EList<MetricValue> afterMetricValues = after.getMetricValues();
+
+ for (MetricValue afterMetricValue : afterMetricValues) {
+ // calculated delta=(after-before)
+ double afterValue = afterMetricValue.getValue();
+ double beforeValue = WeightingFunctionHelper
+ .getValueForMetricType(afterMetricValue.getMetricType(), before);
+ double delta = afterValue - beforeValue;
+
+ // get the corresponding weight
+ double weightOfMetric = WeightingFunctionHelper.getWeightForMetricType(weightingFunction,
+ afterMetricValue.getMetricType());
+
+ if (Double.isNaN(weightOfMetric))
+ logger.error("No weight found for metric type: " + afterMetricValue.getMetricType().getName());
+ else {
+ // add it
+ newWeight += weightOfMetric * delta;
+ logger.debug("Delta for metric type " + afterMetricValue.getMetricType().getName() + " was: " + delta
+ + " and weight is " + weightOfMetric);
+ }
+ }
+
+ return newWeight;
+ }
+
+ @Override
+ public void updateWeight(WeightedTactic weightedTactic) {
+ double newWeight = calculateWeight(weightedTactic);
+ logger.debug("Setting new weight of " + weightedTactic.getName() + " to " + newWeight);
+ weightedTactic.setCurrentWeight(newWeight);
+ }
+
+}
--
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