public void TestArray()
{
double[] a = { 1.0, 2.0 };
var d = new BasicData(a);
Assert.AreEqual(2, d.Input.Length);
Assert.AreEqual(0, d.Ideal.Length);
Assert.AreEqual(1.0, d.Input[0], AIFH.DefaultPrecision);
Assert.AreEqual(2.0, d.Input[1], AIFH.DefaultPrecision);
}
public IList<BasicData> GenerateTrainingData()
{
IList<BasicData> result = new List<BasicData>();
for (double x = -50; x < 50; x++)
{
double y = (2 * Math.Pow(x, 2)) + (4 * x) + 6;
var pair = new BasicData(1, 1);
pair.Input[0] = x;
pair.Ideal[0] = y;
result.Add(pair);
}
return result;
}
/// <summary>
/// Convert two 2D arrays into a List of BasicData elements. One array holds input and the other ideal
/// vectors.
/// </summary>
/// <param name="inputData">An array of input vectors.</param>
/// <param name="idealData">An array of ideal vectors.</param>
/// <returns>A list of BasicData elements.</returns>
public static IList<BasicData> ConvertArrays(double[][] inputData, double[][] idealData)
{
// create the list
var result = new List<BasicData>();
// get the lengths
var inputCount = inputData[0].Length;
var idealCount = idealData[0].Length;
// build the list
for (var row = 0; row < inputData.Length; row++)
{
var dataRow = new BasicData(inputCount, idealCount);
Array.Copy(inputData[row], dataRow.Input, inputCount);
Array.Copy(idealData[row], dataRow.Ideal, idealCount);
result.Add(dataRow);
}
return result;
}
public void TestSupervised()
{
var data = new BasicData(2, 1);
Assert.AreEqual(2, data.Input.Length);
Assert.AreEqual(1, data.Ideal.Length);
}
public void TestLabel()
{
var data = new BasicData(2) {Label = "label"};
Assert.AreEqual("label", data.Label);
}
public void TestToString()
{
var data = new BasicData(2);
Assert.AreEqual("[BasicData: input:0,0, ideal:, label:]", data.ToString());
}
/// <summary>
/// Extract and label an unsupervised training set.
/// </summary>
/// <param name="labelIndex">The column index to use for the label.</param>
/// <returns>The training set.</returns>
public IList<BasicData> ExtractUnsupervisedLabeled(int labelIndex)
{
IList<BasicData> result = new List<BasicData>();
int dimensions = HeaderCount - 1;
for (int rowIndex = 0; rowIndex < Count; rowIndex++)
{
Object[] raw = _data[rowIndex];
var row = new BasicData(dimensions, 0, raw[labelIndex].ToString());
int colIndex = 0;
for (int rawColIndex = 0; rawColIndex < HeaderCount; rawColIndex++)
{
if (rawColIndex != labelIndex)
{
row.Input[colIndex++] = ConvertNumeric(raw, rawColIndex);
}
}
result.Add(row);
}
return result;
}
/// <summary>
/// Extract a supervised training set. This has both input and expected (ideal) output.
/// </summary>
/// <param name="inputBegin">The first input column.</param>
/// <param name="inputCount">The number of columns for input.</param>
/// <param name="idealBegin">The first ideal column.</param>
/// <param name="idealCount">The number of columns for ideal.</param>
/// <returns>The training set.</returns>
public IList<BasicData> ExtractSupervised(int inputBegin, int inputCount, int idealBegin, int idealCount)
{
IList<BasicData> result = new List<BasicData>();
for (int rowIndex = 0; rowIndex < Count; rowIndex++)
{
object[] raw = _data[rowIndex];
var row = new BasicData(inputCount, idealCount);
for (int i = 0; i < inputCount; i++)
{
row.Input[i] = ConvertNumeric(raw, inputBegin + i);
}
for (int i = 0; i < idealCount; i++)
{
row.Ideal[i] = ConvertNumeric(raw, idealBegin + i);
}
result.Add(row);
}
return result;
}