wayang-benchmark/code/main/java/org/apache/wayang/apps/sgd/SGDImpl.java [50:87]:
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        this.configuration = configuration;
        this.plugins = Arrays.asList(plugins);
    }

    public double[] apply(String datasetUrl,
                          int datasetSize,
                          int features,
                          int maxIterations,
                          double accuracy,
                          int sampleSize) {
        return this.apply(datasetUrl, datasetSize, features, maxIterations, accuracy, sampleSize, null);
    }

    public double[] apply(String datasetUrl,
                          int datasetSize,
                          int features,
                          int maxIterations,
                          double accuracy,
                          int sampleSize,
                          Experiment experiment) {

        // Initialize the builder.
        WayangContext wayangContext = new WayangContext(this.configuration);
        for (Plugin plugin : this.plugins) {
            wayangContext.withPlugin(plugin);
        }
        JavaPlanBuilder javaPlanBuilder = new JavaPlanBuilder(wayangContext);
        if (experiment != null) javaPlanBuilder.withExperiment(experiment);
        javaPlanBuilder.withUdfJarOf(this.getClass());

        // Create initial weights.
        List<double[]> weights = Arrays.asList(new double[features]);
        final DataQuantaBuilder<?, double[]> weightsBuilder = javaPlanBuilder
                .loadCollection(weights).withName("init weights");

        // Load and transform the data.
        final DataQuantaBuilder<?, double[]> transformBuilder = javaPlanBuilder
                .readTextFile(datasetUrl).withName("source")
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wayang-benchmark/code/main/java/org/apache/wayang/apps/sgd/SGDImprovedImpl.java [51:88]:
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        this.configuration = configuration;
        this.plugins = Arrays.asList(plugins);
    }

    public double[] apply(String datasetUrl,
                          int datasetSize,
                          int features,
                          int maxIterations,
                          double accuracy,
                          int sampleSize) {
        return this.apply(datasetUrl, datasetSize, features, maxIterations, accuracy, sampleSize, null);
    }

    public double[] apply(String datasetUrl,
                          int datasetSize,
                          int features,
                          int maxIterations,
                          double accuracy,
                          int sampleSize,
                          Experiment experiment) {

        // Initialize the builder.
        WayangContext wayangContext = new WayangContext(this.configuration);
        for (Plugin plugin : this.plugins) {
            wayangContext.withPlugin(plugin);
        }
        JavaPlanBuilder javaPlanBuilder = new JavaPlanBuilder(wayangContext);
        if (experiment != null) javaPlanBuilder.withExperiment(experiment);
        javaPlanBuilder.withUdfJarOf(this.getClass());

        // Create initial weights.
        List<double[]> weights = Arrays.asList(new double[features]);
        final DataQuantaBuilder<?, double[]> weightsBuilder = javaPlanBuilder
                .loadCollection(weights).withName("init weights");

        // Load and transform the data.
        final DataQuantaBuilder<?, double[]> transformBuilder = javaPlanBuilder
                .readTextFile(datasetUrl).withName("source")
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