public static SectionStats AggregateSections(IEnumerable<Section> sections)
{
var enumerable = sections as Section[] ?? sections.ToArray();
var confidenceMean = enumerable.Average(s => s.Confidence);
var duration = Aggregate(enumerable.Select(s => s.Duration));
var result = new SectionStats(confidenceMean, duration,enumerable.Count());
return result;
}
Song ParseRow(string row_data)
{
var song_builder = new SongBuilder();
string[] fields = row_data.Split('\t');
//0 -> id; ignore
int ptr = 1;
//Segment stats
//1-8 -> LoudnessStart
var loudness_start = ReadAggregate(fields, ref ptr);
//9-16 -> LoudnessMax
var loudness_max = ReadAggregate(fields, ref ptr);
//17-24 -> LoudnessMaxTime
var loudness_max_time = ReadAggregate(fields, ref ptr);
//25-32 -> Duration
var seg_duration = ReadAggregate(fields, ref ptr);
//Segment stats: Pitches
var pitches = ReadAggregates(fields, ref ptr, 12);
//Segment stats: Timbre
var timbre = ReadAggregates(fields, ref ptr, 12);
var segment_stats = new SegmentStats(0d, loudness_start, loudness_max_time, loudness_max, seg_duration, pitches, timbre);
//Sections stats
//?? -> Count
var sec_count = ReadIntField(fields, ref ptr);
//??+7 -> Duration
var sec_duration = ReadAggregate(fields, ref ptr);
var sections_stats = new SectionStats(0d, sec_duration, sec_count);
//Single attrs
//?? -> ArtistLatitude
var artist_latitude = ReadDoubleField(fields, ref ptr);
//?? -> ArtistLongitude
var artist_longitude = ReadDoubleField(fields, ref ptr);
//?? -> Danceability
var danceability = ReadDoubleField(fields, ref ptr);
//?? -> Duration
var duration = ReadDoubleField(fields, ref ptr);
//?? -> Energy
var energy = ReadDoubleField(fields, ref ptr);
//?? -> Tempo
var tempo = ReadDoubleField(fields, ref ptr);
//?? -> ArtistName
var artist_name = ReadField(fields, ref ptr);
//?? -> Genre
var genre = ReadField(fields, ref ptr);
//?? -> TrackName
var track_name = ReadField(fields, ref ptr);
return new Song(artist_name, track_name, segment_stats, sections_stats, 0d, 0d, artist_longitude, artist_latitude, danceability, duration, energy, tempo, Key.AflatMaj, new TimeSignature(), genre);
}
public Song(string artistName, string trackName, SegmentStats segmentStats, SectionStats sectionsStats,
double familiarity, double hotttnesss, double artistLongtitude, double artistLatitude,
double danceability, double duration, double energy, double tempo, Key key, TimeSignature timeSignature, String genre = null)
{
ArtistName = artistName;
TrackName = trackName;
SegmentStats = segmentStats;
SectionsStats = sectionsStats;
Familiarity = familiarity;
Hotttnesss = hotttnesss;
ArtistLongtitude = artistLongtitude;
ArtistLatitude = artistLatitude;
Danceability = danceability;
Duration = duration;
Energy = energy;
Tempo = tempo;
Key = key;
TimeSignature = timeSignature;
Genre = genre;
}