private static double Get(List <double> coefficients, int dimension, List <double> variables)
{
var combinations = CombinationCache.GetCombinations(coefficients.Count, dimension);
double sum = 0.0;
sum += coefficients[0];
for (int i = 1; i < combinations.Count; i++)
{
sum += ComputeSumElementValue(variables, coefficients[i], combinations[i]);
}
return(sum);
}
private static Node GetExpression(List <Node> coefficients, int dimension, List <Node> variables)
{
var combinations = CombinationCache.GetCombinations(coefficients.Count, dimension);
Node sum = Node.Zero;
sum += coefficients[0];
for (int i = 1; i < combinations.Count; i++)
{
sum += ComputeSumElementValue(variables, coefficients[i], combinations[i]);
}
return(sum);
}
public static string GetExpression(int dimension, List <double> coefficients, List <string> variables)
{
var combinations = CombinationCache.GetCombinations(coefficients.Count, dimension);
string coefficientString = coefficients[0].ToString(CultureInfo.InvariantCulture);
StringBuilder result = new StringBuilder();
result.Append(coefficientString);
for (int i = 1; i < combinations.Count; i++)
{
result.Append($" + {ComputeSumElementString(variables, coefficients[i], combinations[i])}");
}
return(result.ToString());
}
