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Zhankui He

6 accepted papers

2025

ActionPiece: Contextually Tokenizing Action Sequences for Generative Recommendation

ICML 2025spotlight

Generative recommendation (GR) is an emerging paradigm where user actions are tokenized into discrete token patterns and autoregressively generated as predictions. However, existing GR models tokenize each action independently, assigning the same fixed tokens to identical actions across all sequence…

2024

Aligning as Debiasing: Causality-Aware Alignment via Reinforcement Learning with Interventional Feedback

NAACL 2024long

Large language models (LLMs) often generate biased outputs containing offensive, toxic, or stereotypical text. Existing LLM alignment methods such as reinforcement learning from human feedback (RLHF) alleviate biases primarily based on reward signals from current model outputs without considering th…

Cited by 6SourcePDFScholar
2024

Deciphering Compatibility Relationships with Textual Descriptions via Extraction and Explanation

AAAI 2024technical

Understanding and accurately explaining compatibility relationships between fashion items is a challenging problem in the burgeoning domain of AI-driven outfit recommendations. Present models, while making strides in this area, still occasionally fall short, offering explanations that can be element…

2024

Evaluating Large Language Models as Generative User Simulators for Conversational Recommendation

NAACL 2024long

Synthetic users are cost-effective proxies for real users in the evaluation of conversational recommender systems. Large language models show promise in simulating human-like behavior, raising the question of their ability to represent a diverse population of users. We introduce a new protocol to me…

2024

RecWizard: A Toolkit for Conversational Recommendation with Modular, Portable Models and Interactive User Interface

AAAI 2024technical

We present a new Python toolkit called RecWizard for Conversational Recommender Systems (CRS). RecWizard offers support for development of models and interactive user interface, drawing from the best practices of the Huggingface ecosystems. CRS with RecWizard are modular, portable, interactive and L…

2022

Leashing the Inner Demons: Self-Detoxification for Language Models

AAAI 2022technical

Language models (LMs) can reproduce (or amplify) toxic language seen during training, which poses a risk to their practical application. In this paper, we conduct extensive experiments to study this phenomenon. We analyze the impact of prompts, decoding strategies and training corpora on the output…

Cited by 26SourcePDFScholar