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fixed gradient ascent

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This commit is contained in:
Ziver Koc 2018-05-22 17:31:58 +02:00
parent 45b1f51685
commit a938b70d57
4 changed files with 31 additions and 3 deletions
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10
test/zutil/math/MatrixTest.java
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@ -105,6 +105,16 @@ public class MatrixTest {
@Test
public void vectorMultiply(){
assertArrayEquals(
new double[]{0.1, 0.4, 0.9, 1.6},
Matrix.Elemental.multiply(
new double[]{1, 2, 3, 4},
new double[]{0.1, 0.2, 0.3, 0.4}),
0.001);
}
@Test
public void vectorMatrixMultiply(){
assertArrayEquals(
new double[]{1.4, 1.9, 2.4, 2.9},
Matrix.multiply(

2
test/zutil/ml/LinearRegressionTest.java
View file

@ -33,7 +33,7 @@ public class LinearRegressionTest {
@Test
public void gradientAscent() {
double[] theta = LinearRegression.gradientDescent( // one iteration
double[] theta = LinearRegression.gradientDescentIteration( // one iteration
/* x */ new double[][]{{1, 5},{1, 2},{1, 4},{1, 5}},
/* y */ new double[]{1, 6, 4, 2},
/* theta */ new double[]{0, 0},