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- W4284706355 abstract "Most existing recommendation models learn vectorized representations for items, i.e., item embeddings to make predictions. Item embeddings inherit popularity bias from the data, which leads to biased recommendations. We use this observation to design two simple and effective strategies, which can be flexibly plugged into different backbone recommendation models, to learn popularity neutral item representations. One strategy isolates popularity bias in one embedding direction and neutralizes the popularity direction post-training. The other strategy encourages all embedding directions to be disentangled and popularity neutral. We demonstrate that the proposed strategies outperform state-of-the-art debiasing methods on various real-world datasets, and improve recommendation quality of shallow and deep backbone models." @default.
- W4284706355 created "2022-07-08" @default.
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- W4284706355 date "2022-07-06" @default.
- W4284706355 modified "2023-10-14" @default.
- W4284706355 title "Neutralizing Popularity Bias in Recommendation Models" @default.
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- W4284706355 doi "https://doi.org/10.1145/3477495.3531907" @default.
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