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XRec: Large Language Models for Explainable Recommendation

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arxiv 2406.02377 v2 pith:KHY42OPE submitted 2024-06-04 cs.IR cs.AIcs.CL

classification cs.IRcs.AIcs.CL
keywords explainablerecommendersystemsxreccollaborativeexplanationslanguagellms
verification ladder T0 review T1 audit T2 compute T3 formal
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Recommender systems help users navigate information overload by providing personalized recommendations aligned with their preferences. Collaborative Filtering (CF) is a widely adopted approach, but while advanced techniques like graph neural networks (GNNs) and self-supervised learning (SSL) have enhanced CF models for better user representations, they often lack the ability to provide explanations for the recommended items. Explainable recommendations aim to address this gap by offering transparency and insights into the recommendation decision-making process, enhancing users' understanding. This work leverages the language capabilities of Large Language Models (LLMs) to push the boundaries of explainable recommender systems. We introduce a model-agnostic framework called XRec, which enables LLMs to provide comprehensive explanations for user behaviors in recommender systems. By integrating collaborative signals and designing a lightweight collaborative adaptor, the framework empowers LLMs to understand complex patterns in user-item interactions and gain a deeper understanding of user preferences. Our extensive experiments demonstrate the effectiveness of XRec, showcasing its ability to generate comprehensive and meaningful explanations that outperform baseline approaches in explainable recommender systems. We open-source our model implementation at https://github.com/HKUDS/XRec.

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Cited by 5 Pith papers

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

  1. CORONA: A Coarse-to-Fine Framework for Graph-based Recommendation with Large Language Models

    cs.IR 2025-06 conditional novelty 6.0 of 10

    CORONA uses LLM-generated preference and intent queries to prune the interaction graph in two stages, then applies a GNN to the remaining subgraph, achieving state-of-the-art recommendation accuracy.

  2. Refining Text Generation for Realistic Conversational Recommendation via Direct Preference Optimization

    cs.IR 2025-08 conditional novelty 5.0 of 10

    DPO fine-tuning of the summary and recommendation writers improves conversational recommendation ranking on two Japanese datasets, but the evaluation shares the scorer that generated the training signal.

  3. Mind the XAI Gap: A Human-Centered LLM Framework for Democratizing Explainable AI

    cs.LG 2025-06 conditional novelty 5.0 of 10

    An in-context LLM framework that produces dual expert and non-expert explanations, evaluated on well-being clustering with a user study and LIME-alignment metrics.

  4. Effectiveness of LLMs in Temporal User Profiling for Recommendation

    cs.IR 2025-10 conditional novelty 4.0 of 10

    LLM-generated temporal user profiles, fused by attention, improve content-based recommendation in high-activity domains but yield mixed results in sparse domains.

  5. How Reliable are LLMs for Reasoning on the Re-ranking task?

    cs.CL 2025-08 reject novelty 4.0 of 10

    In a small Earth-science reranking dataset, DPO-trained LLMs rank best and SHAP attribution scores help a general LLM explain why items were selected, but the explanation claim rests on only two examples.

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