Search Results for author: Lixi Zhu

Found 3 papers, 2 papers with code

How Reliable is Your Simulator? Analysis on the Limitations of Current LLM-based User Simulators for Conversational Recommendation

no code implementations25 Mar 2024 Lixi Zhu, Xiaowen Huang, Jitao Sang

Through multiple experiments on two widely-used datasets in the field of conversational recommendation, we highlight several issues with the current evaluation methods for user simulators based on LLMs: (1) Data leakage, which occurs in conversational history and the user simulator's replies, results in inflated evaluation results.

Recommendation Systems

Knowledge Graph-enhanced Sampling for Conversational Recommender System

1 code implementation13 Oct 2021 Mengyuan Zhao, Xiaowen Huang, Lixi Zhu, Jitao Sang, Jian Yu

Then, two samplers are designed to enhance knowledge by sampling fuzzy samples with high uncertainty for obtaining user preferences and reliable negative samples for updating recommender to achieve efficient acquisition of user preferences and model updating, and thus provide a powerful solution for CRS to deal with E&E problem.

Recommendation Systems

Multi-Dimension Fusion Network for Light Field Spatial Super-Resolution using Dynamic Filters

1 code implementation26 Aug 2020 Qingyan Sun, Shuo Zhang, Song Chang, Lixi Zhu, Youfang Lin

Light field cameras have been proved to be powerful tools for 3D reconstruction and virtual reality applications.

3D Reconstruction Super-Resolution

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