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Re‐ranking with multiple objective optimization in recommender system

Published: 09 January 2022 Publication History

Abstract

The ranking algorithm in the recommender system aims at optimizing accuracy during training so that it pays too much attention to the relevance of the individual and ignores the mutual influence between the items in the list. In response to this problem, we propose dither, a re‐ranking model for the recommender system. We deploy the re‐ranking algorithm as an independent module after the ranking algorithm to achieve the function of decoupling from it. Our model formalizes the re‐ranking problem as a multi‐objective optimization problem. It re‐ranks the initial ranking list by balancing multiple indicators to generate an improved list and updates the list during frequent user interactions with the system. Through a case study on the MovieLens 100 K data set, the workflow, and effects of the dither model are demonstrated. In addition, the re‐ranking algorithm shows the performance advantages of our model over existing methods.

Graphical Abstract

Our model deploys the re‐ranking algorithm as an independent module after the ranking algorithm to achieve decoupling from the ranking algorithm. We formalize the re‐ranking problem as a multi‐objective optimization problem.

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Cited By

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  • (2024)Utility-Oriented Reranking with Counterfactual ContextACM Transactions on Knowledge Discovery from Data10.1145/367100418:8(1-22)Online publication date: 4-Jun-2024
  • (2023)Reinforced MOOCs Concept Recommendation in Heterogeneous Information NetworksACM Transactions on the Web10.1145/358051017:3(1-27)Online publication date: 1-Mar-2023

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          Published In

          cover image Transactions on Emerging Telecommunications Technologies
          Transactions on Emerging Telecommunications Technologies  Volume 33, Issue 1
          January 2022
          479 pages
          EISSN:2161-3915
          DOI:10.1002/ett.v33.1
          Issue’s Table of Contents

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          John Wiley & Sons, Inc.

          United States

          Publication History

          Published: 09 January 2022

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          View all
          • (2024)Utility-Oriented Reranking with Counterfactual ContextACM Transactions on Knowledge Discovery from Data10.1145/367100418:8(1-22)Online publication date: 4-Jun-2024
          • (2023)Reinforced MOOCs Concept Recommendation in Heterogeneous Information NetworksACM Transactions on the Web10.1145/358051017:3(1-27)Online publication date: 1-Mar-2023

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