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Foundation Models for Recommender Systems: A Survey and New Perspectives

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arxiv 2402.11143 v1 pith:4D62BRKG submitted 2024-02-17 cs.IR

classification cs.IR
keywords fm4recsysresearchmodelssystemscharacteristicsfoundationopportunitiesrecommender
verification ladder T0 review T1 audit T2 compute T3 formal
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Recently, Foundation Models (FMs), with their extensive knowledge bases and complex architectures, have offered unique opportunities within the realm of recommender systems (RSs). In this paper, we attempt to thoroughly examine FM-based recommendation systems (FM4RecSys). We start by reviewing the research background of FM4RecSys. Then, we provide a systematic taxonomy of existing FM4RecSys research works, which can be divided into four different parts including data characteristics, representation learning, model type, and downstream tasks. Within each part, we review the key recent research developments, outlining the representative models and discussing their characteristics. Moreover, we elaborate on the open problems and opportunities of FM4RecSys aiming to shed light on future research directions in this area. In conclusion, we recap our findings and discuss the emerging trends in this field.

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Cited by 5 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Frozen LVLMs for Micro-Video Recommendation: A Systematic Study of Feature Extraction and Fusion

    cs.IR 2025-12 conditional novelty 6.0 of 10

    Intermediate decoder hidden states from frozen LVLMs fused with ID embeddings outperform caption representations and deliver state-of-the-art micro-video recommendation performance on two real-world benchmarks.

  2. RecBase: Generative Foundation Model Pretraining for Zero-Shot Recommendation

    cs.IR 2025-09 conditional novelty 6.0 of 10

    A from-scratch model that tokenizes items into hierarchical codes and predicts next-item codes reaches higher average zero-shot AUC on 8 datasets than LLM recommenders up to 7B parameters.

  3. Beyond Negative Transfer: Disentangled Preference-Guided Diffusion for Cross-Domain Sequential Recommendation

    cs.IR 2025-08 conditional novelty 6.0 of 10

    A diffusion-based recommender for cross-domain sequential recommendation with disentangled preference guidance claims strong gains over prior baselines, but the reported numbers are internally inconsistent.

  4. Beyond Item Order: Temporal Gap Tokenization for Generative Recommendation with Semantic IDs

    cs.IR 2026-07 conditional novelty 5.0 of 10

    Interleaving fixed log-scale gap tokens with semantic IDs, plus TA-FAMAE temporal regularization, consistently beats ReSID and other SID generative baselines on Amazon sequential recommendation.

  5. PinFM: Foundation Model for User Activity Sequences at a Billion-scale Visual Discovery Platform

    cs.LG 2025-07 conditional novelty 5.0 of 10

    A single pretrained model over user activity sequences improves save rates in Pinterest's Home Feed and Related Items ranking when fine-tuned per application, while deduplication and quantization keep serving costs neutral.

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