public void AdjustWeights_ValidInputs_WeightsAreAdjustedProperly()
{
MapNode node = new MapNode(
x: default(int),
y: default(int),
weights: new Vector {
1, 4, 3, 2
});
Vector input = new Vector {
2, 5, 5, 1
};
node.AdjustWeights(input, learningRate: 0.07, distanceFalloff: 0.2);
// The weights should be adjusted based on the following calculation:
// Weights[x] = Weights[x] + ( learningRate * distanceFalloff * ( input[x] - Weights[x] ) )
// So, for example if Weights[0] is 1, and input[0] is 1, and learningRate is 0.07 and distanceFalloff = 0.2
// Weights[0] = 1 + (0.07 * 0.2 * (2 - 1))
// Weights[0] = 1 + (0.014 * (1))
// Weights[0] = 1 + (0.014)
// Weights[0] = 1.014
Assert.AreEqual(1.014, node.Weights[0]);
Assert.AreEqual(4.014, node.Weights[1]);
Assert.AreEqual(3.028, node.Weights[2]);
Assert.AreEqual(1.986, node.Weights[3]);
}
