Initial commit; some base classes have been defined

but no logic exists yet.

.gitignore

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+.classpath
+.settings
+.project
+target/

src/ca/joeltherrien/randomforest/Main.java

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+package ca.joeltherrien.randomforest;
+
+public class Main {
+
+	public static void main(String[] args) {
+		System.out.println("Hello world!");
+
+	}
+
+}

src/ca/joeltherrien/randomforest/Node.java

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+package ca.joeltherrien.randomforest;
+
+public class Node {
+
+}

src/ca/joeltherrien/randomforest/NumericSplitRule.java

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+package ca.joeltherrien.randomforest;
+
+import java.util.LinkedList;
+import java.util.List;
+
+import ca.joeltherrien.randomforest.exceptions.MissingValueException;
+
+public class NumericSplitRule implements SplitRule{
+
+	public final String covariateName;	
+	public final double threshold;
+	
+	public NumericSplitRule(String covariateName, double threshold) {
+		super();
+		this.covariateName = covariateName;
+		this.threshold = threshold;
+	}
+	
+	@Override
+	public final String toString() {
+		return "NumericSplitRule on " + covariateName + " at " + threshold;
+	}
+
+	@Override
+	public <Y> Split<Y> applyRule(List<Row<Y>> rows) {
+		final List<Row<Y>> leftHand = new LinkedList<>();
+		final List<Row<Y>> rightHand = new LinkedList<>();
+		
+		for(final Row<Y> row : rows) {
+			final Value x = row.getCovariate(covariateName);
+			if(x == null) {
+				throw new MissingValueException(row, this);
+			}
+			
+			final NumericValue xNum = (NumericValue) x;
+			
+		}
+		
+		// TODO Auto-generated method stub
+		return null;
+	}
+	
+	
+}

src/ca/joeltherrien/randomforest/Row.java

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+package ca.joeltherrien.randomforest;
+
+import java.util.Map;
+
+public class Row<Y> {
+	
+	private final Map<String, Value> covariates;
+	private final Y response;
+	private final int id;
+	
+	public Row(Map<String, Value> covariates, Y response, int id) {
+		super();
+		this.covariates = covariates;
+		this.response = response;
+		this.id = id;
+	}
+	
+	public Value getCovariate(String name) {
+		return this.covariates.get(name);
+	}
+	
+	public Y getResponse() {
+		return this.response;
+	}
+	
+	@Override
+	public String toString() {
+		return "Row " + this.id;
+	}
+	
+	
+	
+}

src/ca/joeltherrien/randomforest/Split.java

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+package ca.joeltherrien.randomforest;
+
+import java.util.List;
+
+/**
+ * Very simple class that contains two lists; it's essentially a tuple.
+ * 
+ * @author joel
+ *
+ */
+public class Split<Y> {
+
+	public final List<Row<Y>> leftHand;
+	public final List<Row<Y>> rightHand;
+	
+	public Split(List<Row<Y>> leftHand, List<Row<Y>> rightHand){
+		this.leftHand = leftHand;
+		this.rightHand = rightHand;
+	}
+}

src/ca/joeltherrien/randomforest/SplitRule.java

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+package ca.joeltherrien.randomforest;
+
+import java.util.List;
+
+public interface SplitRule {
+
+	<Y> Split<Y> applyRule(List<Row<Y>> rows);
+	
+}

src/ca/joeltherrien/randomforest/Value.java

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+package ca.joeltherrien.randomforest;
+
+public interface Value {
+
+	// TODO
+	
+}

src/ca/joeltherrien/randomforest/exceptions/MissingValueException.java

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+package ca.joeltherrien.randomforest.exceptions;
+
+import ca.joeltherrien.randomforest.Row;
+import ca.joeltherrien.randomforest.SplitRule;
+
+public class MissingValueException extends RuntimeException{
+
+	/**
+	 * 
+	 */
+	private static final long serialVersionUID = 6808060079431207726L;
+	
+	public MissingValueException(Row<?> row, SplitRule rule) {
+		super("Missing value at row " + row + rule);
+	}
+
+}