Measuring Recency Bias In Sequential Recommendation Systems

Fuente: arXiv
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Main Authors: Oh, Jeonglyul, Cho, Sungzoon
Format: Preprint
Published: 2024
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author Oh, Jeonglyul
Cho, Sungzoon
author_facet Oh, Jeonglyul
Cho, Sungzoon
contents Recency bias in a sequential recommendation system refers to the overly high emphasis placed on recent items within a user session. This bias can diminish the serendipity of recommendations and hinder the system's ability to capture users' long-term interests, leading to user disengagement. We propose a simple yet effective novel metric specifically designed to quantify recency bias. Our findings also demonstrate that high recency bias measured in our proposed metric adversely impacts recommendation performance too, and mitigating it results in improved recommendation performances across all models evaluated in our experiments, thus highlighting the importance of measuring recency bias.
format Preprint
id arxiv_https___arxiv_org_abs_2409_09722
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Measuring Recency Bias In Sequential Recommendation Systems
Oh, Jeonglyul
Cho, Sungzoon
Information Retrieval
Machine Learning
Recency bias in a sequential recommendation system refers to the overly high emphasis placed on recent items within a user session. This bias can diminish the serendipity of recommendations and hinder the system's ability to capture users' long-term interests, leading to user disengagement. We propose a simple yet effective novel metric specifically designed to quantify recency bias. Our findings also demonstrate that high recency bias measured in our proposed metric adversely impacts recommendation performance too, and mitigating it results in improved recommendation performances across all models evaluated in our experiments, thus highlighting the importance of measuring recency bias.
title Measuring Recency Bias In Sequential Recommendation Systems
topic Information Retrieval
Machine Learning
url https://arxiv.org/abs/2409.09722