public ActionResult MaintainArtist(string artistName)
{
using (RecommenderContext db = new RecommenderContext())
{
var artist = db.Artists.Where(a => a.Name == artistName).FirstOrDefault();
NBC nbc = new NBC();
var similarArtists = nbc.GetSimilarArtists(artist);
foreach (var sa in similarArtists)
{
db.ArtistToArtist.Add(new Recommender.Models.ArtistSimilarToArtist()
{
Artist1 = artist, Artist2 = sa.Key, Ratio = sa.Value
});
}
db.SaveChanges();
ViewBag.Message = "success: maintained artist:" + artistName;
return(View("Index"));
}
}
static void Main(string[] args)
{
Tuple <SortedDictionary <char, double>, SortedDictionary <MyPair <char, char>, double> > classifier;
var nbc = new NBC();
{
List <Tuple <string, char> > names = new List <Tuple <string, char> >();
var lines = File.ReadAllLines("name.txt");
foreach (var line in lines)
{
var tt = line.Split(new string[] { " " }, StringSplitOptions.RemoveEmptyEntries);
names.Add(new Tuple <string, char>(tt[0], tt[1][0]));
}
classifier = nbc.Train(names);
}
{
List <Tuple <string, char> > names = new List <Tuple <string, char> >();
var lines = File.ReadAllLines("name2.txt");
foreach (var line in lines)
{
var tt = line.Split(new string[] { " " }, StringSplitOptions.RemoveEmptyEntries);
names.Add(new Tuple <string, char>(tt[0], tt[1][0]));
}
int total = names.Count;
int right = 0;
foreach (var pp in names)
{
string init = pp.Item1;
char cls = pp.Item2;
char res = nbc.Classify(classifier, nbc.GetFeatures(init));
if (res == cls)
{
right++;
}
Console.WriteLine($"{init} : {res} vs {cls}");
}
Console.WriteLine($"RESULT: {100.0 * right/total}");
Console.ReadLine();
}
{
Tree tree = new Tree();
DataSet dataSet = new DataSet();
var lines = File.ReadAllLines("input.txt");
var ht = lines[0].Split(new char[] { '\t' }, StringSplitOptions.RemoveEmptyEntries);
var hn = lines[1].Split(new char[] { '\t' }, StringSplitOptions.RemoveEmptyEntries);
if (hn.Length != ht.Length)
{
throw new ArgumentException("azaza");
}
foreach (var line in lines.Skip(2))
{
var item = new Item();
var values = line.Split(new char[] { '\t' }, StringSplitOptions.RemoveEmptyEntries);
if (values.Length != ht.Length)
{
throw new ArgumentException("azaza2");
}
for (int i = 0; i < values.Length; i++)
{
string name = hn[i];
string value = values[i];
AttributeType type;
if (ht[i] == "c")
{
type = AttributeType.CategoricalNominal;
}
else
{
type = AttributeType.Numerical;
}
item.Attributes[name] = new MyAttribute(name, value, type);
}
dataSet.Items.Add(item);
}
tree.Data = dataSet;
tree.ClassificationAttributeName = hn.Last();
tree.Build();
//var gini = Utility.Gini(dataSet, hn.Last());
Console.WriteLine();
}
}