Created
January 9, 2015 00:27
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| public double deriveTheta1(){ | |
| double sum = 0; | |
| for (int j=0; j<initial_data.x.length; j++){ | |
| sum += (initial_data.y[j] - hypothesisFunction(initial_data.x[j])) * initial_data.x[j]; | |
| } | |
| return -2 * sum / initial_data.x.length; | |
| } | |
| public double deriveTheta0(){ | |
| double sum = 0; | |
| for (int j=0; j<initial_data.x.length; j++) { | |
| sum += initial_data.y[j] - hypothesisFunction(initial_data.x[j]); | |
| } | |
| return -2 * sum / initial_data.x.length; | |
| } |
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