77 lines
2.5 KiB
Python
77 lines
2.5 KiB
Python
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from typing import Dict, Any
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class ConfidenceScorer:
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"""
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Computes a weighted authenticity and quality score across multiple data sources:
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- YouTube footprint: 40%
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- MusicBrainz catalog: 35%
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- Wikidata entity: 25%
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"""
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def __init__(self, yt_weight: float = 0.40, mb_weight: float = 0.35, wd_weight: float = 0.25):
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self.w_yt = yt_weight
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self.w_mb = mb_weight
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self.w_wd = wd_weight
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def calculate_score(
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self,
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yt_metrics: Dict[str, Any],
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mb_result: Dict[str, Any],
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wd_result: Dict[str, Any]
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) -> Dict[str, Any]:
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# 1. YouTube sub-score (0.0 to 1.0)
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yt_score = 0.0
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if yt_metrics.get("status") in ["live_api", "cached"]:
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subs = yt_metrics.get("subscribers", 0)
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views = yt_metrics.get("lifetime_views", 0)
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vids = yt_metrics.get("video_count", 0)
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# Baseline 0.5 for a verified channel existence
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yt_score = 0.5
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if subs >= 1000:
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yt_score += 0.2
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elif subs > 0:
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yt_score += 0.1
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if views >= 50000:
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yt_score += 0.2
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elif views > 0:
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yt_score += 0.1
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if vids >= 5:
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yt_score += 0.1
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# 2. MusicBrainz sub-score
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mb_score = mb_result.get("confidence", 0.0) if mb_result.get("verified") else 0.0
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# 3. Wikidata sub-score
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wd_score = wd_result.get("confidence", 0.0) if wd_result.get("verified") else 0.0
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# Aggregated composite score
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composite = (yt_score * self.w_yt) + (mb_score * self.w_mb) + (wd_score * self.w_wd)
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composite = round(min(1.0, max(0.0, composite)), 2)
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# Confidence category
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if composite >= 0.75:
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tier = "High"
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elif composite >= 0.45:
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tier = "Medium"
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else:
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tier = "Low / Emerging"
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return {
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"composite_confidence": composite,
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"confidence_tier": tier,
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"sub_scores": {
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"youtube": round(yt_score, 2),
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"musicbrainz": round(mb_score, 2),
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"wikidata": round(wd_score, 2)
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}
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}
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if __name__ == "__main__":
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scorer = ConfidenceScorer()
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dummy_yt = {"status": "live_api", "subscribers": 5000, "lifetime_views": 250000, "video_count": 18}
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dummy_mb = {"verified": True, "confidence": 1.0}
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dummy_wd = {"verified": True, "confidence": 1.0}
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print("Test Scorer Output:")
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print(scorer.calculate_score(dummy_yt, dummy_mb, dummy_wd))
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