private void addSongButton_Click(object i_Sender, EventArgs i_EventArgs)
{
Song curSong = null;
string curPlayer = null;
if (!string.IsNullOrEmpty(NewSongNameTextBox.Text))
{
if (YoutubeRadioButton.Checked)
{
curPlayer = "youtube";
}
else
{
curPlayer = "vimeo";
}
curSong = SongsFactory.CreateSong(curPlayer, NewSongNameTextBox.Text);
string videoUrl = curSong.GetVideoUrl(NewSongNameTextBox.Text);
TreeNode songNode = PlaylistTreeView.Nodes[1].Nodes.Add(curSong.SongName); // Nodes[1]=User Playlist
songNode.Tag = curSong;
MessageBox.Show(string.Format("The song: \"{0}\" added to your playlist!", NewSongNameTextBox.Text));
NewSongNameTextBox.Text = string.Empty;
}
else
{
MessageBox.Show("You didn't insert song name!");
}
}
static void Main(string[] args)
{
var songs = SongsFactory.GetSongsForLearning();
//PopulateDbWithSongsFromLastFm();
//LoadLyricsForSongs();
//TestWork();
//LoadAdditionInfoAboutSongs();
//UpdateWordsCount();
Console.ReadKey();
}
protected override void OnShown(EventArgs i_EventArgs)
{
foreach (Link curLink in m_UserLinks)
{
try
{
Song song = SongsFactory.CreateSong(curLink.URL, curLink.Name);
TreeNode songNode = PlaylistTreeView.Nodes[0].Nodes.Add(song.SongName); // Nodes[0]=Facebook Posts
songNode.Tag = song; // save the song under song's name
}
catch (Exception ex)
{
}
}
}
public static void Classification()
{
var songs = SongsFactory.GetSongsForLearning();
double[][] observations = new double[songs.Count][];
for (int i = 0; i < songs.Count; i++)
{
var song = songs[i];
var items = new double[]
{
song.ArtistBeginYear,
song.ArtistType,
song.Duration,
song.GenreType,
song.LyricCharsCount, song.LyricWordsCount,
song.Negative, song.Positive,
song.SongDateYear
};
observations[i] = items;
}
var kmeans = new KMeans(2);
var labels = kmeans.Compute(observations);
for (int i = 0; i < 2; i++)
{
var i1 = i;
Console.Out.Write($"{labels.Count(x => x == i1)} ");
}
Console.Out.WriteLine();
var correctCount = 0;
for (int i = 0; i < songs.Count; i++)
{
if ((int)songs[i].Popularity == labels[i])
{
correctCount++;
}
}
Console.Out.WriteLine(correctCount);
}
private void fetchUserLinkes()
{
foreach (Link curLink in m_UserLinks)
{
try
{
Song song = SongsFactory.CreateSong(curLink.URL, curLink.Name);
if (!PlaylistTreeView.InvokeRequired)
{
addSongToTreeView(song);
}
else
{
PlaylistTreeView.Invoke(new Action(() => addSongToTreeView(song))); // save the song under song's name));
}
}
catch (Exception)
{
}
}
}
private static void DoYourWork()
{
var songs = SongsFactory.GetSongsForLearning(); // этот метод вернёт песни, у которых есть ВСЕ данные
var data = new DataTable("Songs Example");
var columnNames =
typeof(LearnModel).GetProperties()
.Select(p => p.Name)
.OrderBy(x => x)
.ToList();
data.Columns.AddRange(columnNames.Select(name => new DataColumn(name)).ToArray());
foreach (var song in songs)
{
data.Rows.Add(song.ArtistBeginYear, song.ArtistType, song.Duration, song.GenreType, song.LyricCharsCount,
song.LyricWordsCount, song.Negative, song.Popularity.ToString(), song.Positive, song.SongDateYear);
}
var codebook = new Codification(data, columnNames.ToArray());
var symbols = codebook.Apply(data);
var input = symbols.ToArray <double>(columnNames.Where(x => x != "Popularity").ToArray());
var output = symbols.ToArray <int>("Popularity");
var mins = new int[9];
var maxs = new int[9];
for (int i = 0; i < 9; i++)
{
var curMinForColumn = int.MaxValue;
var curMaxForColumn = int.MinValue;
for (int j = 0; j < input.GetLength(0); j++)
{
var curValue = (int)input[j][i];
if (curValue < curMinForColumn)
{
curMinForColumn = curValue;
}
if (curValue > curMaxForColumn)
{
curMaxForColumn = curValue;
}
}
mins[i] = curMinForColumn;
maxs[i] = curMaxForColumn;
}
DecisionVariable[] attributes =
{
new DecisionVariable("ArtistBeginYear", new IntRange(mins[0], maxs[0])),
new DecisionVariable("ArtistType", songs.Select(x => x.ArtistType).Distinct().Count()),
new DecisionVariable("Duration", new IntRange(mins[2], maxs[2])),
new DecisionVariable("GenreType", songs.Select(x => x.GenreType).Distinct().Count()),
new DecisionVariable("LyricCharsCount", new IntRange(mins[4], maxs[4])),
new DecisionVariable("LyricWordsCount", new IntRange(mins[5], maxs[5])),
new DecisionVariable("Negative", new DoubleRange(songs.Min(x => x.Negative), songs.Max(x => x.Negative))),
new DecisionVariable("Positive", new DoubleRange(songs.Min(x => x.Positive), songs.Max(x => x.Positive))),
new DecisionVariable("SongDateYear", new DoubleRange(songs.Min(x => x.SongDateYear), songs.Max(x => x.SongDateYear))),
};
var classCount = 2; // popular, unpopular
var tree = new DecisionTree(attributes, classCount);
var algo = new C45Learning(tree);
algo.Run(input, output);
// проверяем своими данными
data.Rows.Add(1966, 1, 302, 1, 1354, 255, 92.944470512297059, 0 /*vashe pofig*/, 7.05552948770294, 2009);
var lastItem = data.Rows[data.Rows.Count - 1];
var input0 = codebook.Translate(lastItem, columnNames.Where(x => x != "Popularity").ToArray());
var answer = tree.Compute(input0);
var readableAnswer = codebook.Translate("Popularity", answer);
}
