public static RF Prob(IDensity <G, M, RF> d, Func <M, bool> cond)
{
var rf = d.RealField;
var resSum = rf.Sum(d.GetKeys().Where(cond).Select(k => d[k]));
return(resSum);
}
public static IList <M> SortedKeys <G, M, RF>(this IDensity <G, M, RF> d)
where G :
IBaseStructure <M>,
IComparer <M>
{
return(d.GetKeys().OrderBy(k => k, d.BaseStructure).ToList());
}
public static RF BinaryProb(IDensity <G, M, RF> d1, IDensity <G, M, RF> d2, Func <M, M, bool> cond)
{
var resSum = default(RF);
var rf = d1.RealField;
foreach (var key1 in d1.GetKeys())
{
foreach (var key2 in d2.GetKeys())
{
if (cond(key1, key2))
{
resSum = rf.Add(resSum, rf.Multiply(d1[key1], d2[key2]));
}
}
}
return(resSum);
}
protected static IDictionary <N, RF> GetOpDictionary <N>(
IDensity <G, M, RF> d,
Func <M, N> op)
{
var resDensity = new Dictionary <N, RF>();
var rf = d.RealField;
foreach (var key in d.GetKeys())
{
var resKey = op(key);
if (!resDensity.ContainsKey(resKey))
{
resDensity[resKey] = default(RF);
}
resDensity[resKey] = rf.Add(resDensity[resKey], d[key]);
}
return(resDensity);
}
protected static IDictionary <M, RF> GetConditionalDensityDictionary(
IDensity <G, M, RF> d,
Func <M, bool> cond)
{
var resDict = new Dictionary <M, RF>();
var rf = d.RealField;
foreach (var key in d.GetKeys().Where(cond))
{
resDict[key] = d[key];
}
var conditionalProbability = rf.Sum(resDict.Values);
foreach (var key in resDict.Keys)
{
resDict[key] = rf.Divide(resDict[key], conditionalProbability);
}
return(resDict);
}
protected static IDictionary <N, RF> GetBinaryOpDictionary <N>(
IDensity <G, M, RF> d1,
IDensity <G, M, RF> d2,
Func <M, M, N> op)
{
var resDensity = new Dictionary <N, RF>();
var rf = d1.RealField;
foreach (var key1 in d1.GetKeys())
{
foreach (var key2 in d2.GetKeys())
{
var resKey = op(key1, key2);
if (!resDensity.ContainsKey(resKey))
{
resDensity[resKey] = default(RF);
}
resDensity[resKey] = rf.Add(resDensity[resKey], rf.Multiply(d1[key1], d2[key2]));
}
}
return(resDensity);
}
public static IList <RF> GetValues <G, M, RF>(this IDensity <G, M, RF> d)
{
return(d.GetKeys().Select(k => d.Dictionary[k]).ToList());
}