public static TwoByTwo GetInstance(KeyValuePair <string, IDictionary <string, int> > varAndCidToVal1, KeyValuePair <string, IDictionary <string, int> > varAndCidToVal2, bool rememberCases)
{
TwoByTwo twoByTwo = rememberCases ? (TwoByTwo) new TwoByTwoCases() : (TwoByTwo) new TwoByTwoCounts();
twoByTwo.Var1 = varAndCidToVal1.Key;
twoByTwo.Var2 = varAndCidToVal2.Key;
twoByTwo.TabulateCounts(varAndCidToVal1.Value, varAndCidToVal2.Value);
return(twoByTwo);
}
public static TwoByTwo GetInstance(IDictionary <string, int> cidToVal1, IDictionary <string, int> cidToVal2, bool rememberCases)
{
TwoByTwo twoByTwo = rememberCases ? (TwoByTwo) new TwoByTwoCases() : (TwoByTwo) new TwoByTwoCounts();
twoByTwo.Var1 = null;
twoByTwo.Var2 = null;
twoByTwo.TabulateCounts(cidToVal1, cidToVal2);
twoByTwo.Invalidate();
return(twoByTwo);
}
public static IEnumerable <TwoByTwo> GetCollection(bool lowMemory, bool unsorted, string inputSparseFileName1, string inputSparseFileName2, bool rememberCases)
{
if (unsorted)
{
return(TwoByTwo.GetUnsortedCollection(inputSparseFileName1, inputSparseFileName2, lowMemory, rememberCases));
}
else
{
return(TwoByTwo.GetSortedCollection(inputSparseFileName1, inputSparseFileName2, lowMemory, rememberCases));
}
}
private static IEnumerable <TwoByTwo> ProcessCore(string inputSparseFileName1, IEnumerable <KeyValuePair <string, IDictionary <string, int> > > varToCidToVal2, bool rememberCases)
{
foreach (KeyValuePair <string, IDictionary <string, int> > varAndCidToVal1 in GroupByVariableLowMemory(inputSparseFileName1))
{
foreach (KeyValuePair <string, IDictionary <string, int> > varAndCidToVal2 in varToCidToVal2)
{
TwoByTwo twoByTwo = TwoByTwo.GetInstance(varAndCidToVal1, varAndCidToVal2, rememberCases);
yield return(twoByTwo);
}
}
}
public TwoByTwo SampleFromNull(int N)
{
int sum = Sum();
double p1 = (double)RowSum(true) / sum;
double p2 = (double)ColSum(true) / sum;
Random rand = new Random((int)DateTime.Now.Ticks);
TwoByTwo nullTable = TwoByTwo.GetInstance(this.Var1, this.Var2, false);
for (int i = 0; i < N; i++)
{
nullTable.IncrementCell(MachineInvariantRandom.GlobalRand.NextDouble() < p1, MachineInvariantRandom.GlobalRand.NextDouble() < p2);
}
return(nullTable);
}
public static IEnumerable <TwoByTwo> GetCollectionFromMatrices(bool unsorted, string inputMatrixFileName1, string inputMatrixFileName2, ParallelOptions parallelOptions)
{
MatrixFactory <string, string, SufficientStatistics> mf = MatrixFactory <string, string, SufficientStatistics> .GetInstance();
var m1 = mf.Parse(inputMatrixFileName1, MissingStatistics.GetInstance(), parallelOptions);
var m2 = mf.Parse(inputMatrixFileName2, MissingStatistics.GetInstance(), parallelOptions);
List <TwoByTwo> tableList = new List <TwoByTwo>();
foreach (string key in m1.RowKeys)
{
if (m2.ContainsRowKey(key))
{
TwoByTwo table = TwoByTwo.GetInstance(inputMatrixFileName1, key, false);
var m1NonMissing = m1.RowView(key).Select(kvp => kvp);
var m2NonMissing = m2.RowView(key).Select(kvp => kvp);
// m1 is T for first col, m2 is F for first Col.
table.TT = m1NonMissing.Select(kvp => (int)kvp.Value.AsDiscreteStatistics()).Sum();
table.TF = m1NonMissing.Count() - table.TT;
table.FT = m2NonMissing.Select(kvp => (int)kvp.Value.AsDiscreteStatistics()).Sum();
table.FF = m2NonMissing.Count() - table.FT;
if (unsorted)
{
yield return(table);
}
else
{
tableList.Add(table);
}
}
}
if (!unsorted)
{
tableList.Sort((t1, t2) => t1.FisherExactTest.CompareTo(t2.FisherExactTest));
foreach (var table in tableList)
{
yield return(table);
}
}
}
public TwoByTwo SampleFromAlt(int N)
{
int sum = Sum();
double pRow = (double)RowSum(true) / sum;
double pColGivenRowIsTrue = (double)TT / RowSum(true);
double pColGivenRowIsFalse = (double)FT / RowSum(false);
TwoByTwo altTable = TwoByTwo.GetInstance(this.Var1, this.Var2, false);
for (int i = 0; i < N; i++)
{
if (MachineInvariantRandom.GlobalRand.NextDouble() < pRow)
{
altTable.IncrementCell(true, MachineInvariantRandom.GlobalRand.NextDouble() < pColGivenRowIsTrue);
}
else
{
altTable.IncrementCell(false, MachineInvariantRandom.GlobalRand.NextDouble() < pColGivenRowIsFalse);
}
}
return(altTable);
}