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authorHai Liu <hai.liu@huawei.com>2016-04-20 09:48:26 +0800
committerHai Liu <hai.liu@huawei.com>2016-04-20 09:48:26 +0800
commit221ea813d2479a16c489b1940efd87f4afce3f8c (patch)
tree33aa1110b49f73992a570c3e46eebba79d1f5596 /src/predictor
parentc4e0e363115ec831847fa46c7370baf7415face6 (diff)
Add classfier to predictor
JIRA: PREDICTION-40 Change-Id: I0b35d13a4ad1dab0f32fe7df7fea3de4d40eeb0e
Diffstat (limited to 'src/predictor')
-rw-r--r--src/predictor/ClassifierAdapter.java76
1 files changed, 76 insertions, 0 deletions
diff --git a/src/predictor/ClassifierAdapter.java b/src/predictor/ClassifierAdapter.java
new file mode 100644
index 0000000..79dab7e
--- /dev/null
+++ b/src/predictor/ClassifierAdapter.java
@@ -0,0 +1,76 @@
+package predictor;
+
+import java.util.Random;
+
+import org.apache.log4j.*;
+
+import weka.core.*;
+import weka.classifiers.*;
+
+public class ClassifierAdapter implements PredictorInterface {
+ protected Logger logger = Logger.getLogger(ClassifierAdapter.class);
+
+ protected String name;
+ protected Classifier classifier;
+ protected Evaluation eval;
+
+ public ClassifierAdapter(Classifier classifier, String name) {
+ this.classifier = classifier;
+ this.name = name;
+ }
+
+ @Override
+ public String getName() {
+ return this.name;
+ }
+
+ @Override
+ public void crossValidate(Instances instances, int numFold, Random rand) throws Exception {
+ eval = new Evaluation(instances);
+ eval.crossValidateModel(this.classifier, instances, numFold, rand);
+ }
+
+ public String getEvaluationSummaryString() {
+ return this.eval.toSummaryString();
+ }
+
+ public String getEvaluationMatrixString() throws Exception {
+ return this.eval.toMatrixString();
+ }
+
+ public FastVector getEvaluationPredictions() {
+ return eval.predictions();
+ }
+
+ @Override
+ public void train(Instances instances) throws Exception {
+ this.classifier.buildClassifier(instances);
+ }
+
+ @Override
+ public int predict(Instance instance) throws Exception {
+ this.classifier.classifyInstance(instance);
+ return 0;
+ }
+
+ @Override
+ public int predict(Instances instances) throws Exception {
+ for (int i=0;i<instances.numInstances();i++) {
+ this.predict(instances.instance(i));
+ }
+ return 0;
+ }
+
+ @Override
+ public String getEvaluationResults() throws Exception {
+ String results = "\n-- ";
+ results += this.getName();
+ results += " --\n";
+ results += this.eval.toSummaryString();
+ results += this.eval.toMatrixString();
+ results += this.eval.toClassDetailsString();
+ results += "\n";
+ return results;
+ }
+}
+