private static void PrintDatasetSizeDependentInfo(Message[] messages)
{
for (int i = 0; i < 10; i++)
{
var iterationMessages = messages.Take(messages.Length - i).ToArray();
var trainingMessages = iterationMessages.Take(iterationMessages.Length * 2 / 3).ToArray();
var testMessages = iterationMessages.Skip(trainingMessages.Length)
.Take(iterationMessages.Length - trainingMessages.Length)
.ToArray();
var spamClassifier = new SpamClassifier(trainingMessages);
Console.WriteLine("--------------------------------------------");
Console.WriteLine("overall messages count --> " + iterationMessages.Length);
Console.WriteLine("training messages count --> " + trainingMessages.Length);
Console.WriteLine("test messages count --> " + testMessages.Length);
Console.WriteLine("--------------------------------------------");
var positiveCounter = 0;
foreach (var message in testMessages)
{
var isSpam = spamClassifier.GetSpamProbability(message) >
spamClassifier.GetNonSpamProbability(message);
if (message.IsSpam == isSpam)
{
positiveCounter++;
}
}
Console.WriteLine($"positive result: {positiveCounter}");
}
}
private static void PrintFullInfo(Message[] messages)
{
var trainingMessages = messages.Take(messages.Length * 2 / 3).ToArray();
var testMessages = messages.Skip(trainingMessages.Length)
.Take(messages.Length - trainingMessages.Length)
.ToArray();
var spamClassifier = new SpamClassifier(trainingMessages);
spamClassifier.PrintWords();
Console.WriteLine("--------------------------------------------");
Console.WriteLine("overall messages count --> " + messages.Length);
Console.WriteLine("training messages count --> " + trainingMessages.Length);
Console.WriteLine("test messages count --> " + testMessages.Length);
Console.WriteLine("--------------------------------------------");
var positiveCounter = 0;
foreach (var message in testMessages)
{
Console.WriteLine(message);
Console.WriteLine($"spam P: " + spamClassifier.GetSpamProbability(message));
Console.WriteLine("non spam P: " + spamClassifier.GetNonSpamProbability(message));
Console.WriteLine(spamClassifier.GetSpamProbability(message) >
spamClassifier.GetNonSpamProbability(message)
? "spam"
: "not spam");
Console.WriteLine();
var isSpam = spamClassifier.GetSpamProbability(message) >
spamClassifier.GetNonSpamProbability(message);
if (message.IsSpam == isSpam)
{
positiveCounter++;
}
}
Console.WriteLine($"positive result: {positiveCounter}");
}
