Search Results for author: Xiaolei Wang

Found 12 papers, 8 papers with code

A prediction-based forward-looking vehicle dispatching strategy for dynamic ride-pooling

no code implementations11 Mar 2024 Xiaolei Wang, Chen Yang, Yuzhen Feng, Luohan Hu, Zhengbing He

For on-demand dynamic ride-pooling services, e. g., Uber Pool and Didi Pinche, a well-designed vehicle dispatching strategy is crucial for platform profitability and passenger experience.

Unleashing the Potential of Large Language Models as Prompt Optimizers: An Analogical Analysis with Gradient-based Model Optimizers

1 code implementation27 Feb 2024 Xinyu Tang, Xiaolei Wang, Wayne Xin Zhao, Siyuan Lu, Yaliang Li, Ji-Rong Wen

Focused on the two aspects, we borrow the theoretical framework and learning methods from gradient-based optimization to design improved strategies for LLM-based prompt optimizers.

Language-Specific Neurons: The Key to Multilingual Capabilities in Large Language Models

no code implementations26 Feb 2024 Tianyi Tang, Wenyang Luo, Haoyang Huang, Dongdong Zhang, Xiaolei Wang, Xin Zhao, Furu Wei, Ji-Rong Wen

Large language models (LLMs) demonstrate remarkable multilingual capabilities without being pre-trained on specially curated multilingual parallel corpora.

Are Large Language Models Good Prompt Optimizers?

no code implementations3 Feb 2024 Ruotian Ma, Xiaolei Wang, Xin Zhou, Jian Li, Nan Du, Tao Gui, Qi Zhang, Xuanjing Huang

Despite the success, the underlying mechanism of this approach remains unexplored, and the true effectiveness of LLMs as Prompt Optimizers requires further validation.

valid

Alleviating the Long-Tail Problem in Conversational Recommender Systems

1 code implementation21 Jul 2023 Zhipeng Zhao, Kun Zhou, Xiaolei Wang, Wayne Xin Zhao, Fan Pan, Zhao Cao, Ji-Rong Wen

Conversational recommender systems (CRS) aim to provide the recommendation service via natural language conversations.

Recommendation Systems Retrieval

Improving Conversational Recommendation Systems via Counterfactual Data Simulation

1 code implementation5 Jun 2023 Xiaolei Wang, Kun Zhou, Xinyu Tang, Wayne Xin Zhao, Fan Pan, Zhao Cao, Ji-Rong Wen

To develop our approach, we characterize user preference and organize the conversation flow by the entities involved in the dialogue, and design a multi-stage recommendation dialogue simulator based on a conversation flow language model.

counterfactual Data Augmentation +2

Rethinking the Evaluation for Conversational Recommendation in the Era of Large Language Models

1 code implementation22 May 2023 Xiaolei Wang, Xinyu Tang, Wayne Xin Zhao, Jingyuan Wang, Ji-Rong Wen

The recent success of large language models (LLMs) has shown great potential to develop more powerful conversational recommender systems (CRSs), which rely on natural language conversations to satisfy user needs.

Explanation Generation Recommendation Systems

A Survey of Large Language Models

5 code implementations31 Mar 2023 Wayne Xin Zhao, Kun Zhou, Junyi Li, Tianyi Tang, Xiaolei Wang, Yupeng Hou, Yingqian Min, Beichen Zhang, Junjie Zhang, Zican Dong, Yifan Du, Chen Yang, Yushuo Chen, Zhipeng Chen, Jinhao Jiang, Ruiyang Ren, YiFan Li, Xinyu Tang, Zikang Liu, Peiyu Liu, Jian-Yun Nie, Ji-Rong Wen

To discriminate the difference in parameter scale, the research community has coined the term large language models (LLM) for the PLMs of significant size.

Language Modelling

Towards Unified Conversational Recommender Systems via Knowledge-Enhanced Prompt Learning

1 code implementation19 Jun 2022 Xiaolei Wang, Kun Zhou, Ji-Rong Wen, Wayne Xin Zhao

Our approach unifies the recommendation and conversation subtasks into the prompt learning paradigm, and utilizes knowledge-enhanced prompts based on a fixed pre-trained language model (PLM) to fulfill both subtasks in a unified approach.

Language Modelling Recommendation Systems +1

Spin selectivity through chiral polyalanine monolayers on semiconductors

no code implementations31 Dec 2019 Tianhan Liu, Xiaolei Wang, Hailong Wang, Gang Shi, Fan Gao, Honglei Feng, Haoyun Deng, Longqian Hu, Eric Lochner, Pedro Schlottmann, Stephan von Molnár, Yongqing Li, Jianhua Zhao, Peng Xiong

Electrical generation of polarized spins in nonmagnetic materials is of great interest for the underlying physics and device potential.

Applied Physics Strongly Correlated Electrons

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