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AI & MLRecommendedAIML-REC-006

Feedback Loops and Popularity Bias

Recommenders shape the data they learn from, so exposure bias compounds into popularity bias.

Difficulty
3 / 5
Importance
4 / 5
Study time
1–2 h
Kind of work
Mixed

Why it matters

The learner can explain how a feedback loop amplifies popularity bias and propose one mitigation that changes what gets logged.

The route to this topic

Route AIML-REC-006
What Is a Model? Tasks: Regression, Classification, and Beyond Features and Targets The Recommendation Problem Linear Regression I: Prediction and Residuals Embeddings Loss and Fitting: Squared Error Similarity in Vector Space Linear Regression II: Least Squares Fitting Collaborative Filtering Principal Component Analysis Matrix Factorization and the SVD Matrix Factorization for Recommendation Feedback Loops and Popularity Bias