private static string TrigramMinHashing(MultiplicativeHash mult, Hw2 hw2)
{
var sb = new StringBuilder();
var stopWatch = new Stopwatch();
decimal tenDist = 0;
stopWatch.Start();
tenDist = TrigramMinHash(mult, hw2.D1, hw2.D2, 10);
stopWatch.Stop();
sb.AppendLine("t=10: normalized-L0(a, b):" + tenDist + " in " + stopWatch.Elapsed.Milliseconds + " milliseconds");
stopWatch.Reset();
decimal fiftyDist = 0;
stopWatch.Start();
fiftyDist = TrigramMinHash(mult, hw2.D1, hw2.D2, 50);
stopWatch.Stop();
sb.AppendLine("t=50: normalized-L0(a, b):" + fiftyDist + " in " + stopWatch.Elapsed.Milliseconds + " milliseconds");
decimal hundredDist = 0;
stopWatch.Reset();
stopWatch.Start();
hundredDist = TrigramMinHash(mult, hw2.D1, hw2.D2, 100);
stopWatch.Stop();
sb.AppendLine("t=100: normalized-L0(a, b):" + hundredDist + " in " + stopWatch.Elapsed.Milliseconds + " milliseconds");
stopWatch.Reset();
decimal threeHundred = 0;
stopWatch.Start();
threeHundred = TrigramMinHash(mult, hw2.D1, hw2.D2, 300);
stopWatch.Stop();
sb.AppendLine("t=300: normalized-L0(a, b):" + threeHundred + " in " + stopWatch.Elapsed.Milliseconds + " milliseconds");
decimal sixHundred = 0;
stopWatch.Reset();
stopWatch.Start();
sixHundred = TrigramMinHash(mult, hw2.D1, hw2.D2, 600);
stopWatch.Stop();
sb.AppendLine("t=600: normalized-L0(a, b):" + sixHundred + " in " + stopWatch.Elapsed.Milliseconds + " milliseconds");
Console.WriteLine(sb.ToString());
return sb.ToString();
}
static void Main(string[] args)
{
var argsNotNull = args != null;
if (argsNotNull && args.Any(t => t == "Hw2"))
{
var hw2 = new Hw2();
HowManyDistinctNgrams(hw2);
CalculateJaccard(hw2);
var mult = new MultiplicativeHash();
var sb = new StringBuilder();
for (var i = 0; i < 10; i++)
{
sb.AppendLine(TrigramMinHashing(mult, hw2));
}
var sb2 = new StringBuilder();
var d1d2 = TrigramMinHash(mult, hw2.D1, hw2.D2, 100);
var d1d3 = TrigramMinHash(mult, hw2.D1, hw2.D3, 100);
var d1d4 = TrigramMinHash(mult, hw2.D1, hw2.D4, 100);
var d2d3 = TrigramMinHash(mult, hw2.D2, hw2.D3, 100);
var d2d4 = TrigramMinHash(mult, hw2.D2, hw2.D4, 100);
var d3d4 = TrigramMinHash(mult, hw2.D3, hw2.D4, 100);
sb2.AppendLine(d1d2.ToString());
sb2.AppendLine(d1d3.ToString());
sb2.AppendLine(d1d4.ToString());
sb2.AppendLine(d2d3.ToString());
sb2.AppendLine(d2d4.ToString());
sb2.AppendLine(d3d4.ToString());
Console.ReadLine();
}
else if (argsNotNull && args.Any(t => t == "Hw3"))
{
var hw3 = new Hw3();
Console.ReadLine();
}
else if (argsNotNull && args.Any(t => t == "Hw4"))
{
var hw4 = new Hw4();
Console.ReadLine();
}
}
private static decimal TrigramMinHash(MultiplicativeHash mult, Document d1, Document d2, int hashFunctionCount)
{
return mult.TrigramCharMinHashing(d1.TrigramChars, d2.TrigramChars, hashFunctionCount);
}
