activity
20212026
most citedWhen Large Language Models Meet Personalization: Perspectives of Challenges and Opportunities

338 citations · 453 across the 14 of their papers we have counts for

collaborators

15 papers

cs.IR2026

Generative Recommenders Forget the Long Tail: Restoring Memorization in Retrieval and Ranking

Xu Huang, Jiancan Wu, Hongzheng Qin +5

Generative recommenders replace the retrieve-then-rank cascade with a single model: beam search over semantic item identifiers performs retrieval, and the same likelihood performs…

cs.IR2026

MixFormer: Co-Scaling Up Dense and Sequence in Industrial Recommenders

Xu Huang, Hao Zhang, Zhifang Fan +6

As industrial recommender systems enter a scaling-driven regime, Transformer architectures have become increasingly attractive for scaling models towards larger capacity and longer…

cs.CL2025

Position: The Real Barrier to LLM Agent Usability is Agentic ROI

Weiwen Liu, Jiarui Qin, Xu Huang +10

Large Language Model (LLM) agents represent a promising shift in human-AI interaction, moving beyond passive prompt-response systems to autonomous agents capable of reasoning, plan…

cs.CL2025

ACEBench: Who Wins the Match Point in Tool Usage?

Chen Chen, Xinlong Hao, Weiwen Liu +13

Large Language Models (LLMs) have demonstrated significant potential in decision-making and reasoning, particularly when integrated with various tools to effectively solve complex…

cs.LG2024★ 3 cited

ToolACE: Winning the Points of LLM Function Calling

Weiwen Liu, Xu Huang, Xingshan Zeng +24

Function calling significantly extends the application boundary of large language models, where high-quality and diverse training data is critical for unlocking this capability. Ho…

cs.IR2024

CELA: Cost-Efficient Language Model Alignment for CTR Prediction

Xingmei Wang, Weiwen Liu, Xiaolong Chen +8

Click-Through Rate (CTR) prediction holds a paramount position in recommender systems. The prevailing ID-based paradigm underperforms in cold-start scenarios due to the skewed dist…

cs.AI2024★ 2 cited

WESE: Weak Exploration to Strong Exploitation for LLM Agents

Xu Huang, Weiwen Liu, Xiaolong Chen +5

Recently, large language models (LLMs) have demonstrated remarkable potential as an intelligent agent. However, existing researches mainly focus on enhancing the agent's reasoning…

cs.IR2024★ 13 cited

RecAI: Leveraging Large Language Models for Next-Generation Recommender Systems

Jianxun Lian, Yuxuan Lei, Xu Huang +3

This paper introduces RecAI, a practical toolkit designed to augment or even revolutionize recommender systems with the advanced capabilities of Large Language Models (LLMs). RecAI…

cs.AI2024★ 34 cited

Understanding the planning of LLM agents: A survey

Xu Huang, Weiwen Liu, Xiaolong Chen +6

As Large Language Models (LLMs) have shown significant intelligence, the progress to leverage LLMs as planning modules of autonomous agents has attracted more attention. This surve…

cs.IR2023★ 24 cited

RecExplainer: Aligning Large Language Models for Explaining Recommendation Models

Yuxuan Lei, Jianxun Lian, Jing Yao +3

Recommender systems are widely used in online services, with embedding-based models being particularly popular due to their expressiveness in representing complex signals. However,…

cs.IR2023

A Data-Centric Multi-Objective Learning Framework for Responsible Recommendation Systems

Xu Huang, Jianxun Lian, Hao Wang +2

Recommendation systems effectively guide users in locating their desired information within extensive content repositories. Generally, a recommendation model is optimized to enhanc…

cs.IR2023★ 11 cited

Recommender AI Agent: Integrating Large Language Models for Interactive Recommendations

Xu Huang, Jianxun Lian, Yuxuan Lei +3

Recommender models excel at providing domain-specific item recommendations by leveraging extensive user behavior data. Despite their ability to act as lightweight domain experts, t…

cs.IR2023★ 338 cited

When Large Language Models Meet Personalization: Perspectives of Challenges and Opportunities

Jin Chen, Zheng Liu, Xu Huang +9

The advent of large language models marks a revolutionary breakthrough in artificial intelligence. With the unprecedented scale of training and model parameters, the capability of…

cs.IR2022★ 8 cited

Cooperative Retriever and Ranker in Deep Recommenders

Xu Huang, Defu Lian, Jin Chen +3

Deep recommender systems (DRS) are intensively applied in modern web services. To deal with the massive web contents, DRS employs a two-stage workflow: retrieval and ranking, to ge…

cs.LG2021★ 20 cited

Fast Variational AutoEncoder with Inverted Multi-Index for Collaborative Filtering

Jin Chen, Defu Lian, Binbin Jin +3

Variational AutoEncoder (VAE) has been extended as a representative nonlinear method for collaborative filtering. However, the bottleneck of VAE lies in the softmax computation ove…