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E4SRec: An Elegant Effective Efficient Extensible Solution of Large Language Models for Sequential Recommendation

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arxiv 2312.02443 v1 pith:JFI456JK submitted 2023-12-05 cs.IR cs.AI

E4SRec: An Elegant Effective Efficient Extensible Solution of Large Language Models for Sequential Recommendation

classification cs.IR cs.AI
keywords e4sreclanguagellmsrecommendationefficiencyitemslargemodels
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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The recent advancements in Large Language Models (LLMs) have sparked interest in harnessing their potential within recommender systems. Since LLMs are designed for natural language tasks, existing recommendation approaches have predominantly transformed recommendation tasks into open-domain natural language generation tasks. However, this approach necessitates items to possess rich semantic information, often generates out-of-range results, and suffers from notably low efficiency and limited extensibility. Furthermore, practical ID-based recommendation strategies, reliant on a huge number of unique identities (IDs) to represent users and items, have gained prominence in real-world recommender systems due to their effectiveness and efficiency. Nevertheless, the incapacity of LLMs to model IDs presents a formidable challenge when seeking to leverage LLMs for personalized recommendations. In this paper, we introduce an Elegant Effective Efficient Extensible solution for large language models for Sequential Recommendation (E4SRec), which seamlessly integrates LLMs with traditional recommender systems that exclusively utilize IDs to represent items. Specifically, E4SRec takes ID sequences as inputs, ensuring that the generated outputs fall within the candidate lists. Furthermore, E4SRec possesses the capability to generate the entire ranking list in a single forward process, and demands only a minimal set of pluggable parameters, which are trained for each dataset while keeping the entire LLM frozen. We substantiate the effectiveness, efficiency, and extensibility of our proposed E4SRec through comprehensive experiments conducted on four widely-used real-world datasets. The implementation code is accessible at https://github.com/HestiaSky/E4SRec/.

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Forward citations

Cited by 11 Pith papers

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

  1. Beyong Tokens: Item-aware Attention for LLM-based Recommendation

    cs.IR 2026-03 unverdicted novelty 7.0

    The paper proposes an item-aware attention mechanism with intra-item and inter-item layers to let LLMs capture item-level collaborative relations instead of only token-level ones.

  2. LBR: Towards Mitigating Length Bias in Large Language Models for Recommendation

    cs.IR 2026-07 accept novelty 6.5

    LBR removes length bias in LLM recommenders via length-aware attention offsets and Trie-branching information-length normalization, improving accuracy and fairness with negligible cost.

  3. Trustworthy Recommendation in the Era of Large Language Models: Opportunities and Challenges

    cs.IR 2026-05 unverdicted novelty 6.0

    A systematic review of over 200 studies concludes that LLMs in recommender systems act as a double-edged sword, creating both opportunities and new risks for trustworthiness.

  4. SpecTran: Spectral-Aware Transformer-based Adapter for LLM-Enhanced Sequential Recommendation

    cs.IR 2026-01 unverdicted novelty 6.0

    SpecTran applies a spectral-aware transformer adapter with learnable position encoding to aggregate informative components across the full spectrum of LLM embeddings, yielding 9.17% average gains on sequential recomme...

  5. A Survey on Generative Recommendation: Data, Model, and Tasks

    cs.IR 2025-10 accept novelty 6.0

    This survey organizes generative recommendation into data, model, and task dimensions, identifying five advantages including world knowledge integration and creative generation while noting challenges in benchmarks an...

  6. Diffusion Language Model for Recommendation

    cs.IR 2026-07 conditional novelty 5.0

    DLMRec adapts a masked discrete diffusion language model to recommendation via collaborative tokenization, curriculum masking, and stability-aware voting, outperforming autoregressive LLM baselines on LastFM, MovieLen...

  7. SISA-Rec: A Semantically Integrated Sequential Recommender with Contrastive Alignment

    cs.CV 2026-07 conditional novelty 5.0

    Injecting BERT semantics into gated fusion, self-attention scores, and a contrastive objective lifts sequential recommendation HR@10 by 16–23% versus BERT4Rec on two extremely sparse Amazon datasets, especially for co...

  8. Multimodal Music Recommendation System using LLMs

    cs.IR 2026-05 unverdicted novelty 5.0

    Extending E4SRec with multimodal content features on LastFM-1K yields up to 95% Recall and 79% NDCG gains over ID-only baselines, though naive fusion does not always improve results.

  9. Structuring and Tokenizing Distributed User Interest Context for Generative Recommendation

    cs.IR 2026-06 unverdicted novelty 4.0

    G2Rec unifies holistic graph-based user co-engagement modeling with semantic tokenization for scalable generative recommendation without ground-truth user interests.

  10. Pre-trained LLMs Meet Sequential Recommenders: Efficient User-Centric Knowledge Distillation

    cs.IR 2026-04 unverdicted novelty 4.0

    A distillation technique embeds LLM-generated textual user profiles into efficient sequential recommenders without runtime LLM inference, architectural changes, or fine-tuning.

  11. TME-PSR: Time-aware, Multi-interest, and Explanation Personalization for Sequential Recommendation

    cs.IR 2026-04 unverdicted novelty 4.0

    TME-PSR improves sequential recommendation accuracy and explanation quality by personalizing temporal rhythms, fine-grained interests, and recommendation-explanation alignment using a dual-view time encoder, multihead...