public List <ResultEntry> GetBestCandidates(GroupedQueryResults groupedQueryResults, int maxNumberOfMatchesToReturn, IModelService modelService, QueryConfiguration queryConfiguration)
{
var trackIds = groupedQueryResults.GetTopTracksByHammingSimilarity(maxNumberOfMatchesToReturn).ToList();
var tracks = modelService.ReadTracksByReferences(trackIds);
return(tracks.SelectMany(track => BuildResultEntries(track, groupedQueryResults, queryConfiguration)).ToList());
}
private IEnumerable <ResultEntry> BuildResultEntries(TrackData track, GroupedQueryResults groupedQueryResults, QueryConfiguration configuration)
{
var coverages = queryResultCoverageCalculator.GetCoverages(track, groupedQueryResults, configuration);
return(coverages.Select(coverage =>
{
double confidence = confidenceCalculator.CalculateConfidence(
coverage.SourceMatchStartsAt,
coverage.SourceMatchLength,
coverage.QueryLength,
coverage.OriginMatchStartsAt,
track.Length);
return new ResultEntry(
track,
coverage.SourceMatchStartsAt,
coverage.SourceMatchLength,
coverage.SourceCoverageLength,
coverage.OriginMatchStartsAt,
coverage.TrackStartsAt,
confidence,
groupedQueryResults.GetHammingSimilaritySumForTrack(track.TrackReference),
coverage.QueryLength);
}));
}
private IEnumerable <ResultEntry> BuildResultEntries(TrackData track, GroupedQueryResults groupedQueryResults, QueryConfiguration configuration)
{
var coverages = queryResultCoverageCalculator.GetCoverages(track, groupedQueryResults, configuration);
return(coverages.Select(coverage => new ResultEntry(track,
groupedQueryResults.GetScoreSumForTrack(track.TrackReference),
groupedQueryResults.RelativeTo.AddSeconds(coverage.QueryMatchStartsAt),
coverage)));
}