Question regarding evaluation

[xinzuan]

Question regarding evaluation

[xinzuan]

When i check the value of the ref_intervals, est_intervals, it gave a really different value:

ref_interval: [[  0.98046875   1.08723958]
 [  0.99739583   1.25260417]
 [  1.09375      1.16536458]
 ...
 [384.79557292 388.55338542]
 [384.79817708 388.61067708]
 [384.80989583 388.52864583]] 
est_interval: [[387.07030113 387.36055057]
 [387.07030113 387.5475941 ]
 [387.07030113 387.5475941 ]
 ...
 [146.40265896 146.64646848]
 [362.68555193 362.89453152]
 [307.87372971 308.01433333]]

which I think this is one of the reason why the previous result is really far from what reported in the paper. After modify the functions in basic-pitch/basic_pitch/experiments/run_evaluation.py:

1. change minimum note length from 58.0 to 127.70 following the inconsistent minimum note length in issue #93
2. modify the model_inference function as follow:

def model_inference(audio_path, model, save_path,minimum_note_length=127.70):

    output = run_inference(audio_path, model)

    
    frames = output["note"]
    onsets = output["onset"]
     # frames (13678, 88) onsets(13678, 88)

    min_note_len = int(np.round(minimum_note_length / 1000 * (AUDIO_SAMPLE_RATE / FFT_HOP))) # add min_note len since it is required

    estimated_notes = note_creation.output_to_notes_polyphonic(
        frames,
        onsets,
        onset_thresh=0.5,
        frame_thresh=0.3,
        infer_onsets=True,
        min_note_len=min_note_len, # needed in the function, it will throw error if not provided
        max_freq=None, # needed in the function, it will throw error if not provided
        min_freq=None # needed in the function, it will throw error if not provided
    )
    # [(start_time_seconds, end_time_seconds, pitch_midi, amplitude)]

    
   
    pitch = np.array([n[2] for n in estimated_notes]) 
    pitch_hz = librosa.midi_to_hz(pitch)



    estimated_notes_with_pitch_bend = note_creation.get_pitch_bends(output["contour"],estimated_notes)
    times_s = note_creation.model_frames_to_time(output["contour"].shape[0])
    
    estimated_notes_time_seconds = [
        (times_s[note[0]], times_s[note[1]], note[2], note[3], note[4]) for note in estimated_notes_with_pitch_bend
    ]
    
   
    midi = note_creation.note_events_to_midi(estimated_notes_time_seconds, save_path)

    

    intervals = np.array([[times_s[note[0]], times_s[note[1]]] for note in estimated_notes_with_pitch_bend])
    

    return intervals, pitch_hz,midi # add midi in the return to be used in the evaluation

3. In the function main, instead of using the intervals and pitch_hz returned from the function model_inference, I used:

 __,_,midi = model_inference(audio_path, model, save_path)

est_notes = io.load_notes_from_midi(midi = midi)
if est_notes is None:
    est_intervals = []
    est_pitches = []
else:
    est_intervals, est_pitches, _ = est_notes.to_mir_eval()

I finally got the result that are close to the result reported in the paper:
{'Precision': 0.11997030494604051, 'Recall': 0.11606390831628464, 'F-measure': 0.11663329326696836, 'Average_Overlap_Ratio': 0.8401297548289717, 'Precision_no_offset': 0.7436669014704781, 'Recall_no_offset': 0.6548245337432261, 'F-measure_no_offset': 0.6874150165838026, 'Average_Overlap_Ratio_no_offset': 0.4262920646319229, 'Onset_Precision': 0.8259000078273144, 'Onset_Recall': 0.721544837754125, 'Onset_F-measure': 0.7601824436965499, 'Offset_Precision': 0.5818535280932536, 'Offset_Recall': 0.504137416529927, 'Offset_F-measure': 0.5329684074137423}

[drubinstein]

Hi @xinzuan. The training branch is still a work in progress, so don't rely on it too heavily. Regarding your issue, it's possible that there is a difference in units between the estimate, reference timestamps and frequency values and your solution took care of the difference.