// Command line argument: C:\Users\M-PEC\Desktop\TwitterDB RWR_MAP_Domain1_1.txt 1 5 15
public static void Main(string[] args)
{
Console.WriteLine("RWR-based Recommendation (" + DateTime.Now.ToString() + ")\n");
Stopwatch programStopwatch = Stopwatch.StartNew(); // Stopwatch: C# Standard Library Class
// Program arguments
dirData = @args[0] + Path.DirectorySeparatorChar; // Path of directory that containes SQLite DB files
string outFilePath = args[0] + "\\" + args[1];
Console.WriteLine(outFilePath);
string[] methodologyList = args[2].Split(','); // The list of experimental codes (csv format; for example: 0,1,8,9,10,11,12 )
int nFolds = int.Parse(args[3]); // Number of folds
int nIterations = int.Parse(args[4]); // Number of iterations for RWR
// Load existing experimental results: SKIP already performed experiments
if (File.Exists(outFilePath))
{
StreamReader reader = new StreamReader(outFilePath);
string line;
//reader.ReadLine(); // Discard First Line(Headline)
while ((line = reader.ReadLine()) != null)
{
string[] tokens = line.Split('\t');
long egouser = long.Parse(tokens[0]);
int experiment = int.Parse(tokens[1]);
if (!existingResults.ContainsKey(egouser))
existingResults.Add(egouser, new List<int>());
existingResults[egouser].Add(experiment);
}
reader.Close();
}
// Run experiments using multi-threading
string[] sqliteDBs = Directory.GetFiles(dirData, "*.sqlite");
// Methodology list
methodologies = new List<Methodology>();
foreach (string methodology in methodologyList) // 'methodologyList' == args[1]
methodologies.Add((Methodology)int.Parse(methodology));
// Result File Format
Program.logger = new StreamWriter(outFilePath, true);
//Program.logger.WriteLine("{0}\t\t{1}\t{2}\t{3}\t{4}\t\t\t{5}\t\t\t{6}\t{7}\t{8}", "EGO", "Method", "Kfold", "Iter", "MAP", "RECALL", "LIKE", "HIT", "FRIEND");
// #Core Part: One .sqlite to One thread
bool alreadyExperimented;
int cntSemaphore = 1;
semaphore = new Semaphore(cntSemaphore, cntSemaphore);
Stopwatch dbStopwatch = null; // Stopwatch: C# Standard Library Class
foreach (string dbFile in sqliteDBs)
{
Console.WriteLine("Start Ego: " + Path.GetFileNameWithoutExtension(dbFile));
dbStopwatch = Stopwatch.StartNew();
Experiment experiment = new Experiment(dbFile);
alreadyExperimented = experiment.startPersonalizedPageRank(nFolds, nIterations);
dbStopwatch.Stop();
if (alreadyExperimented == true)
{
Program.logger.WriteLine("\t" + Tools.getExecutionTime(dbStopwatch));
Program.logger.Flush();
}
}
// Close Output file
Program.logger.Close();
// Execution Time
programStopwatch.Stop();
Console.WriteLine("Execution Time: " + Tools.getExecutionTime(programStopwatch));
Console.WriteLine("Finished!");
}
// Command line argument: C:\Users\dilet\Desktop\TwitterDB 0 10 15 0.1 1 1
public static void Main(string[] args)
{
Console.WriteLine("RWR-based Recommendation (" + DateTime.Now.ToString() + ")\n");
Stopwatch programStopwatch = Stopwatch.StartNew();
// Program arguments
string dirPath = args[0] + Path.DirectorySeparatorChar; // Path of directory that containes SQLite DB files
string[] methodologyList = args[1].Split(','); // The list of experimental codes (csv format; for example: 0,1,8,9,10,11,12 )
int kFolds = int.Parse(args[2]); // Number of folds
int nIterations = int.Parse(args[3]); // Number of iterations for RWR
egoLikeThresholdRatioInTestSet = double.Parse(args[4]);
isOnlyFriendInEgoNetwork = (int.Parse(args[5]) == 1) ? true : false;
isGenericFriendship = (int.Parse(args[6]) == 1) ? true : false;
// <Ego, dbPath(.sqlite)> Sorted by Ego ID(Ascending Order)
string[] dbCollection = Directory.GetFiles(dirPath, "*.sqlite");
SortedDictionary<long, string> egoList = new SortedDictionary<long, string>();
foreach (string dbPath in dbCollection)
{
long egoID = long.Parse(Path.GetFileNameWithoutExtension(dbPath));
egoList.Add(egoID, dbPath);
}
// Methodology list(Experiment Codes)
List<Methodology> methodologies = new List<Methodology>();
foreach (string methodology in methodologyList)
methodologies.Add((Methodology) int.Parse(methodology));
// #Core Part: One .sqlite to One thread
int cntSemaphore = 1;
Program.dbSemaphore = new Semaphore(cntSemaphore, cntSemaphore);
foreach (Methodology methodology in methodologies)
{
// Outfile Setting
string outFilePath = args[0] + Path.DirectorySeparatorChar + "RWR_MAP_10Split_Friend_Domain1_" + (int)methodology + "_Friendship0.txt";
// Load existing experimental results: SKIP already performed experiments
HashSet<long> alreadyPerformedEgoList = new HashSet<long>(); // (<ego ID>, <{Experiments Codes}>)
if (File.Exists(outFilePath))
{
using (StreamReader reader = new StreamReader(outFilePath))
{
string line;
while ((line = reader.ReadLine()) != null)
{
string[] tokens = line.Split('\t');
long egoUser = long.Parse(tokens[0]);
alreadyPerformedEgoList.Add(egoUser);
}
}
}
Program.logger = new StreamWriter(outFilePath, true);
// Personalized PageRank: Multi-threading
Experiment experiment;
personalizedPageRankThreadParamters pagaRankParameters;
List<Thread> threadList = new List<Thread>();
foreach (KeyValuePair<long, string> egoDBpair in egoList)
{
long egoID = egoDBpair.Key;
string dbPath = egoDBpair.Value;
if (alreadyPerformedEgoList.Contains(egoID) == true)
{
Console.WriteLine("Ego {0} Already Performend", egoID);
continue;
}
try
{
// one Thread to one DB
Program.dbSemaphore.WaitOne();
Console.WriteLine("Ego {0} Start", egoID);
experiment = new Experiment(dbPath);
Thread thread = new Thread(experiment.startPersonalizedPageRank);
pagaRankParameters = new personalizedPageRankThreadParamters(kFolds, nIterations, methodology);
thread.Start(pagaRankParameters);
threadList.Add(thread);
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
}
foreach (Thread thread in threadList)
thread.Join();
// Close Output file
Program.logger.Close();
}
// Execution Time
programStopwatch.Stop();
Console.WriteLine("Execution Time: " + Tools.getExecutionTime(programStopwatch));
Console.WriteLine("Finished!");
}
