public void TestMethod1()
{
float[] v1 = { 1.0f, 2.0f, 3.0f };
float[] v2 = { 1.0f, 2.0f, 3.0f };
float[] v3 = NaturalLanguage.vector.VectorSpace.Add(v1, v2);
CollectionAssert.AreEqual(v3, Vspace.Scale(2, v1));
CollectionAssert.AreEqual(Vspace.Negate(v1), Vspace.Scale(-1, v1));
Assert.AreEqual(Vspace.DotProduct(v2, v2), 14);
Assert.AreEqual(Vspace.Magnitude(v2), Math.Sqrt(14), 0.01);
CollectionAssert.AreEqual(Vspace.Normalize(v1), new float[] { 1 / (float)Math.Sqrt(14), 2 / (float)Math.Sqrt(14), 3 / (float)Math.Sqrt(14) });
float[] italian_vec = { -3.1635818f, -0.20904206f, 0.29893237f, -0.00035927136f, -0.058570296f, -0.00846739f, 0.3034302f, -0.016199231f, -0.27490035f, -0.1588173f };
float[] anthem_vec = { -2.863994f, 0.09603188f, 0.42992353f, 0.0986715f, -0.15630788f, -0.06696623f, 0.43981647f, 0.18234879f, -0.480734f, -0.04069173f };
float[] niv = Vspace.Normalize(italian_vec);
W2V w = new W2V();
float[] predicted = w.PredictText("italian");
//CollectionAssert.AreEqual(predicted, niv);
float[] niv2 = Vspace.Normalize(Vspace.Add(italian_vec, anthem_vec));
string[] ws = NaturalLanguage.Text.RemoveStopWords.RemoveWords("anthem".Trim().ToLower());
Assert.AreEqual("anthem", ws[0]);
predicted = w.PredictText("anthem");
CollectionAssert.AreEqual(predicted, Vspace.Normalize(anthem_vec));
predicted = w.PredictText("italian anthem");
CollectionAssert.AreEqual(predicted, niv2);
Assert.IsFalse(predicted[0] == 0);
Assert.IsFalse(niv[0] == 0);
float[] german_vec = { -1.1745248f, -0.084007405f, 0.034549948f, -0.16554825f, -0.14128838f, 0.020536855f, -0.08310235f, 0.13850354f, -0.09974682f, 0.05751427f };
anthem_vec = new float[] { -2.863994f, 0.09603188f, 0.42992353f, 0.0986715f, -0.15630788f, -0.06696623f, 0.43981647f, 0.18234879f, -0.480734f, -0.04069173f };
float[] niv3 = Vspace.Normalize(Vspace.Add(german_vec, anthem_vec));
float[] predicted2 = w.PredictText("german anthem");
CollectionAssert.AreEqual(predicted2, niv3);
Assert.IsFalse(predicted2[0] == 0);
Assert.IsFalse(niv3[0] == 0);
Assert.IsTrue(Vspace.Loss(w.PredictText("german anthem"), w.PredictText("italian anthem")) < Vspace.Loss(w.PredictText("italian anthem"), w.PredictText("fluffy pancakes")));
}
public JsonResult OnPostLike(string song_id, string val)
{
if (HttpContext.User.Identity.IsAuthenticated)
{
int _id = Int32.Parse(HttpContext.User.Claims.Where(c => c.Type == "UserID").Select(c => c.Value).SingleOrDefault());
_User = _context.User.Find(_id);
preference_vector = Vspace.ToArray(_User.PreferenceVector);
}
int like = Int32.Parse(val);
if (_User != null)
{
History history = _context.History.Where(x => x.User.UserID == _User.UserID && x.Song.SongID == Int32.Parse(song_id)).FirstOrDefault();
Song song = _context.Song.Where(s => s.SongID == Int32.Parse(song_id)).Include(x => x.Album).ThenInclude(x => x.Artist).FirstOrDefault();
if (history == null)
{
history = new History()
{
User = _User, Song = song, Progress = 0, Liked = like
};
_context.History.Add(history);
_context.SaveChanges();
return(new JsonResult("updated 1"));
}
if (history.Liked != like)
{
song.Rating += like;
Artist artist = _context.Artist.Where(a => a.ArtistID == song.Album.Artist.ArtistID).FirstOrDefault();
artist.Rating += like;
history.Liked = like;
_User.PreferenceVector = Vspace.ConvertToString(
Vspace.Normalize(Vspace.Add(Vspace.Scale(like, Vspace.ToArray(song.WordVec)), Vspace.ToArray(_User.PreferenceVector))));
_context.Song.Update(song);
_context.Artist.Update(artist);
_context.History.Update(history);
_context.User.Update(_User);
_context.SaveChanges();
}
return(new JsonResult("Like1"));
}
return(new JsonResult("updated"));
}
public JsonResult OnPostIncreaseListen(string song_id)
{
if (HttpContext.User.Identity.IsAuthenticated)
{
int _id = Int32.Parse(HttpContext.User.Claims.Where(c => c.Type == "UserID").Select(c => c.Value).SingleOrDefault());
_User = _context.User.Find(_id);
}
if (_User != null)
{
History history = _context.History.Where(x => x.User.UserID == _User.UserID && x.Song.SongID == Int32.Parse(song_id)).FirstOrDefault();
Song song = _context.Song.Where(s => s.SongID == Int32.Parse(song_id)).Include(x => x.Album).ThenInclude(x => x.Artist).FirstOrDefault();
if (history == null)
{
_User.PreferenceVector = Vspace.ConvertToString(
Vspace.Normalize(Vspace.Add(Vspace.Scale(0.05f, Vspace.ToArray(song.WordVec)), Vspace.ToArray(_User.PreferenceVector))));
song.Listens += 1;
Artist artist = _context.Artist.Where(a => a.ArtistID == song.Album.Artist.ArtistID).FirstOrDefault();
artist.Listens += 1;
History new_history = new History()
{
User = _User, Song = song, Progress = 0, Liked = 0
};
_context.User.Update(_User);
_context.Song.Update(song);
_context.Artist.Update(artist);
_context.History.Add(new_history);
_context.SaveChanges();
return(new JsonResult("Listen1"));
}
return(new JsonResult("Listen2"));
}
return(new JsonResult("Clicked play " + song_id));
}