public string GetSimilarTicketsSummary(string summary)
{
Init();
Stopwatch timer;
var ticket = new StringCompressible(summary);
simObject.SetComplexity(ticket);
timer = Stopwatch.StartNew();
var results = simObject.FindSimilarValAndEntities(ticket, DataSet.ToArray());
timer.Stop();
var similarTickets = new List<Ticket>();
foreach (var element in results)
{
similarTickets.Add(new Ticket {
oid = element.Item2.OID,
itemID = element.Item2.ItemID,
rating = element.Item1,
summary = element.Item2.Summary
});
}
var jsonData = new
{
processTime = timer.ElapsedMilliseconds,
similarTickets = similarTickets
};
return JsonConvert.SerializeObject(jsonData);
}
/// <summary>
/// Similar to FindSimilarEntites but returns a List of StringCompressibles
/// rather than an array of ICompressibles and includes the NCD/MCD value in the return list
/// </summary>
/// <param name="entity">StringCompressible ticket to find similarities for</param>
/// <param name="dataSet">Array of StringCompressible objects representing the ticket database</param>
/// <returns>Returns an orderd list of similar entities.</returns>
public List<Tuple<double, StringCompressible>> FindSimilarValAndEntities(StringCompressible entity, StringCompressible[] dataSet)
{
List<Tuple<double, StringCompressible>> similarEntities = new List<Tuple<double, StringCompressible>>();
double similarityVal;
foreach (StringCompressible entity2 in dataSet)
{
similarityVal = GetSimilarity(entity, entity2);
if (similarityVal < threshold)
{
similarEntities.Add(new Tuple<double, StringCompressible>(similarityVal, entity2));
}
}
similarEntities.Sort((a, b) => a.Item1.CompareTo(b.Item1));
return similarEntities;
}
// Main function to run the acceptance tests
static void Main(string[] args)
{
AcceptanceTests tester = new AcceptanceTests();
// Create the golden set as an array of StringCompressible objects
StringCompressible[] goldenSet = new StringCompressible[11] {
new StringCompressible("IR-0026018", "Unable to start email connector after MR2 install"),
new StringCompressible("IR-0026036", "When using SQL Scripts to Drop Incident Tables to wipe out test tickets - ON CG restart cg_IncidentRequest is not being recreated"),
new StringCompressible("IR-0026137", "ChangeGear not starting"),
new StringCompressible("IR-0026720", "When using SQL Scripts to Drop Incident Tables to wipe out test tickets - ON CG restart cg_IncidentRequest is not being recreated"),
new StringCompressible("IR-0027472", "Email connector is not starting in dev envrionment"),
new StringCompressible("IR-0027625", "Email connector service stopped not restarting"),
new StringCompressible("IR-0027693","Email connector service not starting"),
new StringCompressible("IR-0027791", "Error when trying to save - Actual Start Date and End Date being used?"),
new StringCompressible("IR-0028919", "We recently started using the SLA manager and now newly created after action rules are not being applied"),
new StringCompressible("IR-0029185", "email connector service will not start after server reboot"),
new StringCompressible("IR-0029334", "mail Connector Service does not start and has crashed the CGWeb Client")
};
// Counters
int i = 0;
int j = 0;
// Check each of the 11 tickets against each other and print true if ncd value < threshhold, false otherwise
foreach (StringCompressible element1 in goldenSet)
{
Console.Write("{0} matches: ", goldenSet[i].ItemID);
foreach (StringCompressible element2 in goldenSet)
{
if (tester.ContainsMatch(element1, element2, goldenSet) && i != j)
{
Console.Write("{0}, ", goldenSet[j].ItemID);
}
j++;
}
Console.WriteLine();
j = 0;
i++;
}
Console.Read(); // Prevents the console from closing
}
/// <summary>
/// Method to determine the MCD value between two tickets
/// MCD(A,B) = max(|c(AB)-c(AA)|, |c(AB)-c(BB)|)/max(c(AA),c(BB))
/// </summary>
/// <param name="entity1">ICompressible ticket to operate MCD on</param>
/// <param name="entity2">ICompressible ticket to operate MCD on</param>
/// <returns>Double value representing the MCD value between the two tickets</returns>
private double getMCD(ICompressible entity1, ICompressible entity2)
{
double MCD_numerator;
double MCD_result;
// Create two StringCompressible objects of the entities concatenated to themselves
ICompressible AA = new StringCompressible (Encoding.ASCII.GetString(entity1.ToByteArray().Concat(entity1.ToByteArray()).ToArray()));
ICompressible BB = new StringCompressible (Encoding.ASCII.GetString(entity2.ToByteArray().Concat(entity2.ToByteArray()).ToArray()));
// Find c(AA) and c(BB)
double MCD_AA = (double) GetComplexity(AA);
double MCD_BB = (double) GetComplexity(BB);
// Find c(AB)
byte[] combinedArray = entity1.ToByteArray().Concat(entity2.ToByteArray()).ToArray();
double MCD_AB = (double)compressionSize(combinedArray);
// Find max( |c(AB)-c(AA)|, |c(AB)-c(BB)|)
if (Math.Abs(MCD_AB - MCD_AA) >= Math.Abs(MCD_AB - MCD_BB))
{
MCD_numerator = Math.Abs(MCD_AB - MCD_AA);
}
else
{
MCD_numerator = Math.Abs(MCD_AB - MCD_BB);
}
// Find MCD(A,B)
if (MCD_AA >= MCD_BB)
{
MCD_result = (MCD_numerator / MCD_AA);
}
else
{
MCD_result = (MCD_numerator / MCD_BB);
}
return MCD_result;
}
private void setDataSet()
{
//Open the CSV to read in the data set
var CSVReader = new StreamReader(System.IO.File.OpenRead(Path.Combine(Server.MapPath("~/App_Data"), "IncidentRequest.csv")));
//Read in the "golden set" and add the entities to DataSet
while (!CSVReader.EndOfStream)
{
var row = CSVReader.ReadLine().Split(',');
var entity = new StringCompressible(row[0], row[2]);
entity.ItemID = Regex.Replace(row[1], "IR-0+", "");
simObject.SetComplexity(entity);
DataSet.Add(entity);
}
}