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https://issues.apache.org/jira/browse/SYSTEMML-1849?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16131223#comment-16131223
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Deron Eriksson commented on SYSTEMML-1849:
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cc [~mboehm7]
> Can't obtain scores from l2-svm-predict.dml using JMLC
> ------------------------------------------------------
>
> Key: SYSTEMML-1849
> URL: https://issues.apache.org/jira/browse/SYSTEMML-1849
> Project: SystemML
> Issue Type: Bug
> Components: Compiler, Runtime
> Reporter: Deron Eriksson
>
> Attempting to obtain the {{scores}} variable in {{l2-svm-predict.dml}} using
> JMLC gives:
> {code}
> Exception in thread "main" org.apache.sysml.api.DMLException: Non-existent
> output variable: scores
> at
> org.apache.sysml.api.jmlc.ResultVariables.getMatrixBlock(ResultVariables.java:88)
> at
> org.apache.sysml.api.jmlc.ResultVariables.getMatrix(ResultVariables.java:74)
> {code}
> This appears to be introduced by
> https://github.com/apache/systemml/commit/4b81d0dda6583f0ae96eaa7aa5832005ae5fa8a9
> Example code:
> {code}
> public static void jmlcL2SVM() throws Exception {
> Connection conn = new Connection();
> String dml = conn.readScript("scripts/algorithms/l2-svm.dml");
> PreparedScript l2svm = conn.prepareScript(dml, new String[] {
> "X", "Y", "fmt", "Log" },
> new String[] { "w", "debug_str" }, false);
> double[][] trainData = new double[150][3];
> for (int i = 0; i < 150; i++) {
> int one = ThreadLocalRandom.current().nextInt(0, 101);
> int two = ThreadLocalRandom.current().nextInt(0, 101);
> int three = ThreadLocalRandom.current().nextInt(0, 101);
> double[] row = new double[] { one, two, three };
> trainData[i] = row;
> }
> l2svm.setMatrix("X", trainData);
> log.debug(displayMatrix(trainData));
> double[][] trainLabels = new double[150][1];
> for (int i = 0; i < 150; i++) {
> int one = ThreadLocalRandom.current().nextInt(1, 3);
> double[] row = new double[] { one };
> trainLabels[i] = row;
> }
> l2svm.setMatrix("Y", trainLabels);
> log.debug(displayMatrix(trainLabels));
> l2svm.setScalar("fmt", "csv");
> l2svm.setScalar("Log", "temp/l2-svm-log.csv");
> ResultVariables l2svmResults = l2svm.executeScript();
> double[][] model = l2svmResults.getMatrix("w");
> log.debug("MODEL:");
> log.debug(displayMatrix(model));
> String debugString = l2svmResults.getString("debug_str");
> log.debug("DEBUG STRING:");
> log.debug(debugString);
> String s =
> conn.readScript("scripts/algorithms/l2-svm-predict.dml");
> Map<String, String> m = new HashMap<String, String>();
> m.put("$Y", "\"temp/haberman.test.labels.csv\"");
> m.put("$confusion", "\"temp/l2-svm-confusion.csv\"");
> PreparedScript l2svmPredict = conn.prepareScript(s, m, new
> String[] { "X", "y", "w", "fmt" },
> new String[] { "scores", "confusion_mat" },
> false);
> double[][] testData = new double[150][3];
> for (int i = 0; i < 150; i++) {
> int one = ThreadLocalRandom.current().nextInt(0, 101);
> int two = ThreadLocalRandom.current().nextInt(0, 101);
> int three = ThreadLocalRandom.current().nextInt(0, 101);
> double[] row = new double[] { one, two, three };
> testData[i] = row;
> }
> l2svmPredict.setMatrix("X", testData);
> double[][] testLabels = new double[150][1];
> for (int i = 0; i < 150; i++) {
> int one = ThreadLocalRandom.current().nextInt(1, 3);
> double[] row = new double[] { one };
> testLabels[i] = row;
> }
> l2svmPredict.setMatrix("y", testLabels);
> l2svmPredict.setMatrix("w", model);
> l2svmPredict.setScalar("fmt", "csv");
> ResultVariables l2svmPredictResults =
> l2svmPredict.executeScript();
> double[][] scores = l2svmPredictResults.getMatrix("scores");
> log.debug("SCORES:");
> log.debug(displayMatrix(scores));
> double[][] confusionMatrix =
> l2svmPredictResults.getMatrix("confusion_mat");
> log.debug("CONFUSION MATRIX:");
> log.debug(displayMatrix(confusionMatrix));
> conn.close();
> }
> {code}
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