public void analyzeConditional(TextKeeper keeper, Int32 languageId)
{
Char symbolFirst, symbolSecond;
Int32 indexFirst, indexSecond;
Int64 currentTextLength = 0;
foreach (String line in keeper.getText())
{
for (int i = 0; i < line.Length; i++)
{
symbolFirst = line[i];
indexFirst = Helper.getCharIndex(symbolFirst, languageId);
if (i != line.Length - 1)
{
symbolSecond = line[i + 1];
indexSecond = Helper.getCharIndex(symbolSecond, languageId);
if (indexFirst != -1 && indexSecond != -1)
{
conditionalFrequencies[indexFirst, indexSecond] += 1;
currentTextLength++;
}
}
}
}
this.textLength = currentTextLength;
}
public void countPerformance(TextKeeper keeper)
{
Double performance = 0;
Int32 arraySize = conditionalFrequencies.GetLength(0);
// Длина текста может быть разной:
// Хранитель знает полную длину текста из всех символов
// Анализатор знает длину текста значащих символов
for (int i = 0; i < arraySize; i++)
{
int j = 0;
foreach (KeyValuePair <String, Int32> pair in this.getAbsoluteFrequencies())
{
Double p_j = ((Double)pair.Value / keeper.textLength);
Double p_i_j = ((Double)conditionalFrequencies[i, j] / partialFrequencies[j]);
if (p_i_j != 0)
{
performance += p_i_j * p_j * Math.Log(p_i_j, 2);
}
j++;
}
}
performance *= -1;
this.performance = performance;
}
public void analyze(TextKeeper keeper)
{
foreach (String line in keeper.getText())
{
foreach (Char sym in line.ToLower())
{
if (absoluteFrequencies.ContainsKey(sym.ToString()))
{
absoluteFrequencies[sym.ToString()] += 1;
}
}
}
}
public void analyzePartial(TextKeeper keeper, Int32 languageId)
{
Int32 arrayLength = this.getConditionalFrequencies().GetLength(0);
for (int i = 0; i < arrayLength; i++)
{
Int32 partialSize = 0;
for (int j = 0; j < arrayLength; j++)
{
partialSize += conditionalFrequencies[j, i];
}
this.partialFrequencies.Add(partialSize);
}
}
public void countEntropy(TextKeeper keeper)
{
Double entropy = 0;
foreach (KeyValuePair <String, Int32> pair in this.getAbsoluteFrequencies())
{
Double p_i = ((Double)pair.Value / keeper.textLength);
if (p_i != 0)
{
entropy += p_i * Math.Log(p_i, 2);
}
}
entropy *= -1;
this.entropy = entropy;
}
public MainForm()
{
InitializeComponent();
keeper = new TextKeeper();
analyzer = new Analyzer();
}