Search Results for author: Xiao-Hua Zhou

Found 9 papers, 4 papers with code

Debiased Recommendation with Noisy Feedback

no code implementations24 Jun 2024 Haoxuan Li, Chunyuan Zheng, Wenjie Wang, Hao Wang, Fuli Feng, Xiao-Hua Zhou

Ratings of a user to most items in recommender systems are usually missing not at random (MNAR), largely because users are free to choose which items to rate.

Denoising Imputation +1

Phased Instruction Fine-Tuning for Large Language Models

1 code implementation1 Jun 2024 Wei Pang, Chuan Zhou, Xiao-Hua Zhou, Xiaojie Wang

Instruction Fine-Tuning enhances pre-trained language models from basic next-word prediction to complex instruction-following.

Instruction Following

Unveiling LLM Evaluation Focused on Metrics: Challenges and Solutions

no code implementations14 Apr 2024 Taojun Hu, Xiao-Hua Zhou

The overarching goal is to furnish researchers with a pragmatic guide for effective LLM evaluation and metric selection, thereby advancing the understanding and application of these large language models.

Question Answering Text Generation +1

A Generalized Doubly Robust Learning Framework for Debiasing Post-Click Conversion Rate Prediction

no code implementations12 Nov 2022 Quanyu Dai, Haoxuan Li, Peng Wu, Zhenhua Dong, Xiao-Hua Zhou, Rui Zhang, Jie Sun

However, in this paper, by theoretically analyzing the bias, variance and generalization bounds of DR methods, we find that existing DR approaches may have poor generalization caused by inaccurate estimation of propensity scores and imputation errors, which often occur in practice.

Generalization Bounds Imputation +1

Multiple Robust Learning for Recommendation

no code implementations9 Jul 2022 Haoxuan Li, Quanyu Dai, Yuru Li, Yan Lyu, Zhenhua Dong, Xiao-Hua Zhou, Peng Wu

Doubly robust (DR) learning has been studied in many tasks in RS, with the advantage that unbiased learning can be achieved when either a single imputation or a single propensity model is accurate.

Imputation Recommendation Systems

A Semi-Synthetic Dataset Generation Framework for Causal Inference in Recommender Systems

1 code implementation23 Feb 2022 Yan Lyu, Sunhao Dai, Peng Wu, Quanyu Dai, yuhao deng, Wenjie Hu, Zhenhua Dong, Jun Xu, Shengyu Zhu, Xiao-Hua Zhou

To better support the studies of causal inference and further explanations in recommender systems, we propose a novel semi-synthetic data generation framework for recommender systems where causal graphical models with missingness are employed to describe the causal mechanism of practical recommendation scenarios.

Causal Inference Descriptive +2

On the Opportunity of Causal Learning in Recommendation Systems: Foundation, Estimation, Prediction and Challenges

no code implementations18 Jan 2022 Peng Wu, Haoxuan Li, yuhao deng, Wenjie Hu, Quanyu Dai, Zhenhua Dong, Jie Sun, Rui Zhang, Xiao-Hua Zhou

Recently, recommender system (RS) based on causal inference has gained much attention in the industrial community, as well as the states of the art performance in many prediction and debiasing tasks.

Causal Inference Recommendation Systems

Prevent the Language Model from being Overconfident in Neural Machine Translation

1 code implementation ACL 2021 Mengqi Miao, Fandong Meng, Yijin Liu, Xiao-Hua Zhou, Jie zhou

The Neural Machine Translation (NMT) model is essentially a joint language model conditioned on both the source sentence and partial translation.

Hallucination Language Modelling +4

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