Understanding Tag-Based Anomalies in Recommendation Systems

[olucasmac]

Guys, I have a question regarding the recommendation system: If I assign a tag to a user, why does it return items with different tags? It appears to function correctly only when I request item-based recommendations. When the request is simply for 'recommendations', it returns items with various tags. Is this behavior an intrinsic aspect of the algorithm, or is it a bug?