/*
 * Copyright Myrrix Ltd
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package net.myrrix.online.eval;

import java.io.File;

import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import net.myrrix.common.MyrrixTest;

/**
 * Simple proof of concept test using {@link PrecisionRecallEvaluator}.
 *
 * @author Sean Owen
 */
public final class PrecisionRecallWithNegativeEvaluationTest extends MyrrixTest {

  private static final Logger log = LoggerFactory.getLogger(PrecisionRecallWithNegativeEvaluationTest.class);

  @Test
  public void testEval() throws Exception {
    PrecisionRecallEvaluator evaluator = new PrecisionRecallEvaluator();
    MyrrixIRStatistics stats = (MyrrixIRStatistics) evaluator.evaluate(new File("testdata/negative-grouplens1M"));
    log.info(stats.toString());
    assertTrue(stats.getPrecision() > 0.2);
    assertTrue(stats.getRecall() > 0.2);
    assertTrue(stats.getNormalizedDiscountedCumulativeGain() > 0.225);
    assertTrue(stats.getF1Measure() > 0.2);
    assertTrue(stats.getMeanAveragePrecision() > 0.13);
  }

}

@@ -1484,9 +1484,8 @@
 0.22
-5
 );%0A 
@@ -1583,9 +1583,10 @@
  0.1
-3
+25
 );%0A 

Make test slightly less sensitive