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Posted to commits@hama.apache.org by to...@apache.org on 2012/11/30 08:47:00 UTC
svn commit: r1415527 - in /hama/trunk/examples/src:
main/java/org/apache/hama/examples/GradientDescentExample.java
test/java/org/apache/hama/examples/LinearRegressionTest.java
Author: tommaso
Date: Fri Nov 30 07:46:59 2012
New Revision: 1415527
URL: http://svn.apache.org/viewvc?rev=1415527&view=rev
Log:
[HAMA-682] - added usage string to GD example
Modified:
hama/trunk/examples/src/main/java/org/apache/hama/examples/GradientDescentExample.java
hama/trunk/examples/src/test/java/org/apache/hama/examples/LinearRegressionTest.java
Modified: hama/trunk/examples/src/main/java/org/apache/hama/examples/GradientDescentExample.java
URL: http://svn.apache.org/viewvc/hama/trunk/examples/src/main/java/org/apache/hama/examples/GradientDescentExample.java?rev=1415527&r1=1415526&r2=1415527&view=diff
==============================================================================
--- hama/trunk/examples/src/main/java/org/apache/hama/examples/GradientDescentExample.java (original)
+++ hama/trunk/examples/src/main/java/org/apache/hama/examples/GradientDescentExample.java Fri Nov 30 07:46:59 2012
@@ -43,15 +43,30 @@ public class GradientDescentExample {
public static void main(String[] args) throws InterruptedException,
IOException, ClassNotFoundException {
+
+ if (!(args.length == 1 || args.length == 2)) {
+ System.out.println("USAGE: <INPUT_PATH> [<REGRESSION_MODEL>]");
+ return;
+ }
+
// BSP job configuration
HamaConfiguration conf = new HamaConfiguration();
conf.setFloat(GradientDescentBSP.ALPHA, 0.002f);
conf.setFloat(GradientDescentBSP.COST_THRESHOLD, 0.5f);
conf.setInt(GradientDescentBSP.ITERATIONS_THRESHOLD, 300);
conf.setInt(GradientDescentBSP.INITIAL_THETA_VALUES, 10);
- if (args.length > 1 && args[1] != null && args[1].equals("logistic")) {
- conf.setClass(GradientDescentBSP.REGRESSION_MODEL_CLASS,
+ if (args.length == 2 && args[1] != null) {
+ if (args[1].equals("logistic")) {
+ conf.setClass(GradientDescentBSP.REGRESSION_MODEL_CLASS,
LogisticRegressionModel.class, RegressionModel.class);
+ }
+ else if (args[1].equals("linear")) {
+ // do nothing as 'linear' is default
+ }
+ else {
+ throw new RuntimeException(new StringBuilder("unsupported RegressionModel").
+ append(args[1]).append(", use 'logistic' or 'linear'").toString());
+ }
}
BSPJob bsp = new BSPJob(conf, GradientDescentExample.class);
@@ -90,4 +105,5 @@ public class GradientDescentExample {
fs.delete(TMP_OUTPUT, true);
}
+
}
Modified: hama/trunk/examples/src/test/java/org/apache/hama/examples/LinearRegressionTest.java
URL: http://svn.apache.org/viewvc/hama/trunk/examples/src/test/java/org/apache/hama/examples/LinearRegressionTest.java?rev=1415527&r1=1415526&r2=1415527&view=diff
==============================================================================
--- hama/trunk/examples/src/test/java/org/apache/hama/examples/LinearRegressionTest.java (original)
+++ hama/trunk/examples/src/test/java/org/apache/hama/examples/LinearRegressionTest.java Fri Nov 30 07:46:59 2012
@@ -27,17 +27,7 @@ import static org.junit.Assert.fail;
public class LinearRegressionTest {
@Test
public void testCorrectGDWithLinearRegressionExecution() throws Exception {
- GradientDescentExample.main(new String[]{"src/test/resources/linear_regression_sample.txt"});
- }
-
- @Test
- public void testWrongGDExecutionWithEmptyArgs() {
- try {
- GradientDescentExample.main(new String[0]);
- fail("GradientDescentExample should fail if the argument list has size 0");
- } catch (Exception e) {
- // everything ok
- }
+ GradientDescentExample.main(new String[]{"src/test/resources/linear_regression_sample.txt", "linear"});
}
}