| { |
| "model_type": " laughter_detection", |
| "architectures": ["WavLMForLaughterDetection"], |
| "task": "audio_classification", |
| "num_labels": 2, |
| "label_mapping": {"0": "no_laugh", "1": "laughter"}, |
| "dataset": { |
| "name": "standup4ai", |
| "num_videos": 221, |
| "total_duration_minutes": 540, |
| "language": "en", |
| "class_balance": { |
| "positive": 0.132, |
| "negative": 0.868 |
| } |
| }, |
| "audio_config": { |
| "sample_rate": 16000, |
| "hop_length": 512, |
| "n_fft": 2048, |
| "n_mels": 128, |
| "fmin": 80, |
| "fmax": 8000 |
| }, |
| "prosody_features": { |
| "dimension": 23, |
| "source": "eGeMAPS v02", |
| "extraction": "librosa + openSMILE", |
| "features": [ |
| "F0_mean", "F0_std", "F0_slope", "F0_median", "F0_range", |
| "pause_duration", |
| "speech_rate", "word_duration_mean", "word_duration_std", "syllable_rate", "phonation_time", "total_time", |
| "RMS_energy_mean", "RMS_energy_std", "RMS_energy_range", |
| "MFCC1", "MFCC2", "MFCC3", |
| "spectral_centroid", "spectral_bandwidth", "spectral_rolloff", |
| "voice_activity_ratio", |
| "formant_emphasis" |
| ] |
| }, |
| "validation": { |
| "method": "5-fold_stratified_cv", |
| "n_folds": 5, |
| "prosody_only_f1": "0.960 ± 0.021", |
| "fusion_f1": "0.879 ± 0.034", |
| "delta_f1": "-0.081", |
| "p_value": 0.024, |
| "confidence_interval_95": [-0.152, -0.010] |
| }, |
| "fusion_analysis": { |
| "finding": "NEGATIVE_RESULT", |
| "cause": "frozen_WavLM_mean_pool_destoys_temporal_cues", |
| "regression": "prosody_only_better_than_fusion" |
| } |
| } |
