private string[] writeStatics(staticSet newResults)
{
// create an array of strings out of static data
string [] output = new string[16];
output[0] = "0"; // ID
output[1] = DateTime.Now.Date.ToString(); // Today's Date
output[2] = DateTime.Now.TimeOfDay.ToString(); // now s time
output[3] = datasetFolder.Text; // address of dataset
output[4] = phraseFile.Text; // address of phrase files
output[5] = newResults.totalspam.ToString(); // total spams used
output[6] = newResults.totalham.ToString(); // total hams used
output[7] = phraseNumber.Value.ToString(); // total phrases used
output[8] = selectedAlgorithm.ToString(); // algorithm used
output[9] = (thresholdValue.Value / 100).ToString(); // value of thrshold
output[10] = newResults.time.ToString(); // time spent
output[11] = newResults.accuracy.ToString(); // accuracy
output[12] = newResults.fpositives.ToString(); // false positives
output[13] = newResults.fnegatives.ToString(); // false negatives
output[14] = newResults.spamrecall.ToString(); // spam recall
output[15] = newResults.spamper.ToString(); // spam precision
return(output);
}
private void saveLogFile(staticSet newResults)
{
// this function writes the new static results to a file
if (saveAddress == "")
{
saveAddress = browseFile();
}
loadText.Text = saveAddress;
bool append = false;
// headers
string[] newLine = { "ID", "Date", "Time", "Data Set", "Phrase File",
"Total Spams", "Total Hams", "Total Used Phrases",
"Algorithm", "Threshold", "Time Spend (seconds) ",
"Accuracy", "False Positives", "False Negatives",
"Spam Recall", "Spam Precision" };
append = File.Exists(saveAddress);
// write the statics into a line in the list
// write all lines
try
{
StreamWriter writer = new StreamWriter(saveAddress, append);
if (!append)
{
WriteFile(ref writer, newLine);
}
newLine = writeStatics(newResults);
WriteFile(ref writer, newLine);
writer.Close();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
private void runBtm_Click(object sender, EventArgs e)
{
// this creates a static structure
staticSet resultStatic = new staticSet();
resultStatic = calculateStatics(hamFiles, spamFiles, selectedAlgorithm);
// write down the result box
timeBox.Text = string.Format("Time: {0}", resultStatic.time);
accurecyBox.Text = string.Format("Accuracy: {0}", resultStatic.accuracy);
falseNbox.Text = string.Format("False Negatives: {0}", resultStatic.fnegatives);
falsePBox.Text = string.Format("False Positives: {0}", resultStatic.fpositives);
spamPrecision.Text = string.Format("Spam Percesion: {0}", resultStatic.spamper);
spamRecallBox.Text = string.Format("Spam Recall: {0}", resultStatic.spamrecall);
if (saveFile.Checked)
{
saveLogFile(resultStatic);
}
fillBox();
}
/// <summary>
/// this calcuate the shown statics for each algorithm
/// </summary>
/// <param name="hams">list of ham files </param>
/// <param name="spams">list of spam files </param>
/// <param name="algorithm"></param>
/// <returns></returns>
staticSet calculateStatics(string[] hams, string[] spams, AlgorithmBox algorithm)
{
staticSet myStatics = new staticSet(0);
int hamScores = 0;
int spamScores = 0;
myStatics.totalham = (float)hamNumber.Value;
myStatics.totalspam = (float)spamNumber.Value;
progressBar.Value = 0;
progressBar.Maximum = (int)(myStatics.totalham + myStatics.totalspam);
DateTime tic = DateTime.Now;
Algorithm myAlgo = null;
switch (algorithm)
{
case AlgorithmBox.LCS:
myAlgo = new LCSWord();
break;
case AlgorithmBox.Levenshtein:
myAlgo = new Levenshtien();
break;
case AlgorithmBox.Jaro:
myAlgo = new Jaro();
break;
case AlgorithmBox.JaroWinker:
myAlgo = new JaroWinker();
break;
case AlgorithmBox.BiGram:
myAlgo = new BGram();
break;
default:
break;
}
// we need a conditon here
if (selectedAlgorithm == AlgorithmBox.TFIDF)
{
TFIDF myTFI = new TFIDF();
myTFI.Terms = phrasePower;
Loop(hams, hamNumber.Value, false, myTFI);
Loop(spams, spamNumber.Value, true, myTFI);
// the TFIDF runner
myTFI.run();
float threshold = ((float)thresholdValue.Value) / 100F;
myTFI.claculate(ref hamScores, ref spamScores, threshold);
}
else
{
// other runners
hamScores = Loop(hams, hamNumber.Value, myAlgo);
spamScores = Loop(spams, spamNumber.Value, myAlgo);
}
DateTime toc = DateTime.Now;
TimeSpan timeSpent = toc - tic;
// calculate the spent time , a simple timing mechanism
myStatics.time = (float)timeSpent.TotalSeconds;
if (myStatics.totalspam > 0)
{
// false negatives
myStatics.fnegatives = (myStatics.totalspam - spamScores) / myStatics.totalspam;
// spam recall
myStatics.spamrecall = spamScores / myStatics.totalspam;
// spam precision
myStatics.spamper = spamScores / (spamScores + (myStatics.totalham - hamScores));
}
if (myStatics.totalham > 0)
{
// false positives
myStatics.fpositives = (myStatics.totalham - hamScores) / myStatics.totalham;
}
if (myStatics.totalham > 0 || myStatics.totalspam > 0)
{
// accuracy
myStatics.accuracy = 1 - (((myStatics.totalspam - spamScores) + (myStatics.totalham - hamScores)) / (myStatics.totalham + myStatics.totalspam));
}
// Spam recall
return(myStatics);
}
