Algorithmic Play // Protocol 03
Radio Weights
How the "Smart Shuffle" and autoplay features decide what plays next.
The Autoplay Vector
When a playlist ends, or when a user activates a track's radio, the system relies on a combination of acoustic similarity and collaborative filtering.
Primary Weights:
- Co-occurrence: How often Track A and Track B appear in user-generated playlists together. (Weight: ~45%)
- Acoustic Similarity: BPM, Energy, Valence, and Acousticness vectors matching. (Weight: ~30%)
- Recent Velocity: The track's current save rate and completion rate globally. (Weight: ~25%)
Understanding these weights is why Playlist SEO remains vital—you are feeding the co-occurrence data.