Initial commit of LinearRegression class
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5 changed files with 306 additions and 80 deletions
57
test/zutil/benchmark/AnonymousFunctionBenchmark.java
Executable file
57
test/zutil/benchmark/AnonymousFunctionBenchmark.java
Executable file
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@ -0,0 +1,57 @@
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package zutil.benchmark;
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import com.carrotsearch.junitbenchmarks.BenchmarkRule;
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import org.junit.Rule;
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import org.junit.Test;
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public class AnonymousFunctionBenchmark {
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public static final int TEST_EXECUTIONS = 500;
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@Rule
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public BenchmarkRule benchmarkRun = new BenchmarkRule();
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private int[] array = new int[100_000];
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@Test
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public void functionLoop() {
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for(int k=0; k<TEST_EXECUTIONS; k++) {
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for (int i = 0; i < array.length; i++) {
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array[i] = new CalcFunc(){
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public int calc(int i){
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return i+1;
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}
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}.calc(i);
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}
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}
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}
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@Test
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public void preFunctionLoop() {
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CalcFunc func = new CalcFunc(){
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public int calc(int i){
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return i+1;
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}
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};
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for(int k=0; k<TEST_EXECUTIONS; k++) {
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for (int i = 0; i < array.length; i++) {
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array[i] = func.calc(i);
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}
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}
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}
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@Test
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public void rawLoops(){
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for(int k=0; k<TEST_EXECUTIONS; k++) {
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for (int i = 0; i < array.length; i++) {
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array[i] = i;
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}
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}
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}
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private interface CalcFunc{
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int calc(int i);
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}
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}
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@ -11,30 +11,51 @@ public class LoopBenchmark {
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public BenchmarkRule benchmarkRun = new BenchmarkRule();
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private int[] matrix = new int[100_000];
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private int[] matrix2 = new int[50_000];
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private int[] array1 = new int[100_000];
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private int[] array2 = new int[50_000];
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@Test
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public void oneLoop() {
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public void writeArrayOneLoop() {
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for(int k=0; k<TEST_EXECUTIONS; k++) {
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for (int i = 0; i < Math.max(matrix.length, matrix.length); i++) {
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if (i < matrix.length)
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matrix[i] = i;
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if (i < matrix2.length)
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matrix2[i] = i;
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for (int i = 0; i < Math.max(array1.length, array1.length); i++) {
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if (i < array1.length)
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array1[i] = i;
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if (i < array2.length)
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array2[i] = i;
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}
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}
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}
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@Test
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public void twoLoops(){
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public void writeArraySeparateLoops(){
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for(int k=0; k<TEST_EXECUTIONS; k++) {
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for (int i = 0; i < matrix.length; i++) {
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matrix[i] = i;
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for (int i = 0; i < array1.length; i++) {
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array1[i] = i;
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}
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for (int j = 0; j < matrix2.length; j++) {
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matrix2[j] = j;
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for (int j = 0; j < array2.length; j++) {
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array2[j] = j;
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}
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}
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}
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@Test
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public void readArrayLoop() {
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int sum = 0;
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for(int k=0; k<TEST_EXECUTIONS; k++) {
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for (int i = 0; i < array1.length; i++) {
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sum += array1[i];
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}
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}
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}
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@Test
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public void readArrayForeach() {
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int sum = 0;
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for(int k=0; k<TEST_EXECUTIONS; k++) {
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for (int i : array1) {
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sum += array1[i];
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}
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}
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}
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@ -7,30 +7,30 @@ import static org.junit.Assert.*;
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/**
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*
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*/
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public class MatrixMathTest {
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public class MatrixTest {
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@Test
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public void scalarAdd(){
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assertArrayEquals(new double[][]{{4,5},{-2,11}},
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MatrixMath.add(new double[][]{{2,3},{-4,9}}, 2));
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Matrix.add(new double[][]{{2,3},{-4,9}}, 2));
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}
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@Test
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public void scalarSubtraction(){
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assertArrayEquals(new double[][]{{0,1},{-6,7}},
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MatrixMath.subtract(new double[][]{{2,3},{-4,9}}, 2));
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Matrix.subtract(new double[][]{{2,3},{-4,9}}, 2));
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}
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@Test
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public void scalarMultiply(){
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assertArrayEquals(new double[][]{{4,6},{-8,18}},
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MatrixMath.multiply(new double[][]{{2,3},{-4,9}}, 2));
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Matrix.multiply(new double[][]{{2,3},{-4,9}}, 2));
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}
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@Test
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public void scalarDivision(){
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assertArrayEquals(new double[][]{{1,2},{-2,5}},
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MatrixMath.divide(new double[][]{{2,4},{-4,10}}, 2));
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Matrix.divide(new double[][]{{2,4},{-4,10}}, 2));
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}
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@ -38,19 +38,33 @@ public class MatrixMathTest {
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@Test
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public void elementalAdd(){
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assertArrayEquals(new double[][]{{3,5},{-1,13}},
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MatrixMath.add(new double[][]{{2,3},{-4,9}}, new double[][]{{1,2},{3,4}}));
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Matrix.Elemental.add(new double[][]{{2,3},{-4,9}}, new double[][]{{1,2},{3,4}}));
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}
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@Test
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public void elementalSubtract(){
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assertArrayEquals(new double[][]{{1,1},{-7,5}},
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MatrixMath.subtract(new double[][]{{2,3},{-4,9}}, new double[][]{{1,2},{3,4}}));
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Matrix.Elemental.subtract(new double[][]{{2,3},{-4,9}}, new double[][]{{1,2},{3,4}}));
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}
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@Test
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public void elementalMultiply(){
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assertArrayEquals(new double[][]{{2,6},{-12,36}},
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MatrixMath.elemMultiply(new double[][]{{2,3},{-4,9}}, new double[][]{{1,2},{3,4}}));
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Matrix.Elemental.multiply(new double[][]{{2,3},{-4,9}}, new double[][]{{1,2},{3,4}}));
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}
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@Test
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public void elementalVectorPow(){
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assertArrayEquals(
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new double[]{4,9,16,81},
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Matrix.Elemental.pow(new double[]{2,3,-4,9}, 2),
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0.0);
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}
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@Test
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public void elementalMatrixPow(){
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assertArrayEquals(new double[][]{{4,9},{16,81}},
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Matrix.Elemental.pow(new double[][]{{2,3},{-4,9}}, 2));
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}
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@ -59,7 +73,7 @@ public class MatrixMathTest {
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public void vectorMultiply(){
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assertArrayEquals(
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new double[]{8,14},
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MatrixMath.multiply(new double[][]{{2,3},{-4,9}}, new double[]{1,2}),
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Matrix.multiply(new double[][]{{2,3},{-4,9}}, new double[]{1,2}),
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0.0
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);
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}
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@ -68,18 +82,27 @@ public class MatrixMathTest {
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public void vectorDivision(){
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assertArrayEquals(
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new double[]{4,1},
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MatrixMath.divide(new double[][]{{2,4},{-4,10}}, new double[]{1,2}),
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Matrix.divide(new double[][]{{2,4},{-4,10}}, new double[]{1,2}),
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0.0
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);
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}
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@Test
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public void vectorSum(){
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assertEquals(
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20.0,
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Matrix.sum(new double[]{1,2,0,3,5,9}),
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0.02
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);
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}
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@Test
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public void matrixMultiply(){
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assertArrayEquals(
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new double[][]{{486,410.4,691.6},{314,341.6,416.4},{343.5,353.4,463.6},{173,285.2,190.8}},
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MatrixMath.multiply(
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Matrix.multiply(
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new double[][]{{1,2104},{1,1416},{1,1534},{1,852}},
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new double[][]{{-40,200,-150},{0.25,0.1,0.4}})
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);
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@ -89,21 +112,30 @@ public class MatrixMathTest {
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public void matrixTranspose(){
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assertArrayEquals(
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new double[][]{{1,3},{2,5},{0,9}},
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MatrixMath.transpose(
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Matrix.transpose(
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new double[][]{{1,2,0},{3,5,9}})
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);
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}
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@Test
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public void matrixSum(){
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assertEquals(
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20.0,
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Matrix.sum(new double[][]{{1,2,0},{3,5,9}}),
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0.02
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);
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}
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@Test
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public void identity(){
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assertArrayEquals(
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new double[][]{{1}},
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MatrixMath.identity(1));
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Matrix.identity(1));
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assertArrayEquals(
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new double[][]{{1,0,0,0},{0,1,0,0},{0,0,1,0},{0,0,0,1}},
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MatrixMath.identity(4));
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Matrix.identity(4));
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}
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}
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