Fix collaborative filtering issue: improve similarity coverage and ad… #4
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…d fallbacks - Lower similarity thresholds: 3→2 co-occurrences, 0.1→0.05 similarity in full_sync.py - Lower runtime threshold: 0.2→0.1 similarity in collaborative filtering query - Add comprehensive debug logging to collaborative filtering method - Add content-based fallback when collaborative filtering returns 0 items - Algorithm now shows 'collaborative_fallback_content' when fallback is used This addresses the production issue where only 7.4% of public items had similarities, causing collaborative filtering to return 0 recommendations for most users. 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
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…d fallbacks
This addresses the production issue where only 7.4% of public items had similarities, causing collaborative filtering to return 0 recommendations for most users.
🤖 Generated with Claude Code