LLMGreenRec: LLM-Based Multi-Agent Recommender System for Sustainable E-Commerce
Organizations: Faculty of Computer Science, PHENIKAA University, Hanoi, Vietnam · Faculty of Interdisciplinary Digital Technology, PHENIKAA University, Hanoi, Vietnam · Corresponding author at PHENIKAA University, Hanoi, Vietnam
Abstract
Rising environmental awareness in e-commerce necessitates recommender systems that not only guide users to sustainable products but also minimize their own digital carbon footprints. Traditional session-based systems, optimized for short-term conversions, often fail to capture nuanced user intents for eco-friendly choices, perpetuating a gap between green intentions and actions. To tackle this, we introduce LLMGreenRec, a novel multi-agent framework that leverages Large Language Models (LLMs) to promote sustainable consumption. Through collaborative analysis of user interactions and iterative prompt refinement, LLMGreenRec's specialized agents deduce green-oriented user intents and prioritize eco-friendly product recommendations. Notably, this intent-driven approach also reduces unnecessary interactions and energy consumption. Extensive experiments on benchmark datasets validate LLMGreenRec's effectiveness in recommending sustainable products, demonstrating a robust solution that fosters a responsible digital economy.
Figures & tables
| Datasets | Metrics | Traditional Methods | Single-Intent Methods | Multi-Intent Methods | LLM-based Methods | ||||||||
| MostPop | SKNN | FPMC | NARM | STAMP | GCE-GNN | MCPRN | HIDE | Atten-Mixer | NIR | PO4ISR | LLMGreenRec | ||
| ML-1M | HR@1 | 0.0004 | 0.1270 | 0.1132 | 0.1692 | 0.1584 | 0.1312 | 0.1434 | 0.1498 | 0.1490 | 0.0572 | 0.2000 | 0.2550 |
| HR@5 | 0.0070 | 0.3600 | 0.3748 | 0.5230 | 0.5078 | 0.4748 | 0.4788 | 0.4998 | 0.4932 | 0.2326 | 0.5510 | 0.6110 | |
| NDCG@1 | 0.0004 | 0.1270 | 0.1132 | 0.1692 | 0.1584 | 0.1312 | 0.1434 | 0.1498 | 0.1490 | 0.0572 | 0.2000 | 0.2550 | |
| NDCG@5 | 0.0053 | 0.2530 | 0.2464 | 0.3501 | 0.3367 | 0.3044 | 0.3157 | 0.3256 | 0.3216 | 0.1436 | 0.3810 | 0.4391 | |
| Games | HR@1 | – | 0.0020 | 0.0498 | 0.0572 | 0.0556 | 0.0692 | 0.0522 | 0.0696 | 0.0530 | 0.1168 | 0.2588 | 0.4580 |
| Dataset | Metrics | |||
| HR@1 | HR@5 | NDCG@1 | NDCG@5 | |
| Bundle | 0.3950 | 0.5504 | 0.3950 | 0.4715 |
Recommender Systems
Recommender systems predict and rank items for people using interaction histories, content, context, and feedback.
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