Search Results for author: Cam-Tu Nguyen

Found 10 papers, 3 papers with code

Mixed Preference Optimization: Reinforcement Learning with Data Selection and Better Reference Model

no code implementations28 Mar 2024 Qi Gou, Cam-Tu Nguyen

By analyzing the stability and robustness of RLHF and DPO, we propose MPO (Mixed Preference Optimization), a novel method that mitigates the weaknesses of both approaches.

Contrastive Learning

Long Short-Term Planning for Conversational Recommendation Systems

no code implementations23 Oct 2023 Xian Li, Hongguang Shi, Yunfei Wang, Yeqin Zhang, Xubin Li, Cam-Tu Nguyen

Specifically, the recommendation predicts the long-term recommendation target based on the conversational context and the user history.

Attribute Recommendation Systems

Improving Question Generation with Multi-level Content Planning

1 code implementation20 Oct 2023 Zehua Xia, Qi Gou, Bowen Yu, Haiyang Yu, Fei Huang, Yongbin Li, Cam-Tu Nguyen

Previous studies have suggested that key phrase selection is essential for question generation (QG), yet it is still challenging to connect such disjointed phrases into meaningful questions, particularly for long context.

Answer Generation Question Generation +2

Revisiting the Role of Similarity and Dissimilarity in Best Counter Argument Retrieval

no code implementations18 Apr 2023 Hongguang Shi, Shuirong Cao, Cam-Tu Nguyen

Following the definition that the best counter-argument addresses the same aspects as the input argument while having the opposite stance, we aim to develop an efficient and effective model for scoring counter-arguments based on similarity and dissimilarity metrics.

Argument Retrieval Learning-To-Rank +1

Coarse-to-Fine Knowledge Selection for Document Grounded Dialogs

no code implementations23 Feb 2023 Yeqin Zhang, Haomin Fu, Cheng Fu, Haiyang Yu, Yongbin Li, Cam-Tu Nguyen

Specifically, the former efficiently finds relevant passages in a retrieval-and-reranking process, whereas the latter effectively extracts finer-grain spans within those passages to incorporate into a parametric answer generation model (BART, T5).

Answer Generation Retrieval

Doc2Bot: Accessing Heterogeneous Documents via Conversational Bots

no code implementations20 Oct 2022 Haomin Fu, Yeqin Zhang, Haiyang Yu, Jian Sun, Fei Huang, Luo Si, Yongbin Li, Cam-Tu Nguyen

This paper introduces Doc2Bot, a novel dataset for building machines that help users seek information via conversations.

dialog state tracking Response Generation

Dave the debater: a retrieval-based and generative argumentative dialogue agent

no code implementations WS 2018 Dieu Thu Le, Cam-Tu Nguyen, Kim Anh Nguyen

In this paper, we explore the problem of developing an argumentative dialogue agent that can be able to discuss with human users on controversial topics.

Argument Mining Retrieval +1

Joint learning of frequency and word embeddings for multilingual readability assessment

no code implementations WS 2018 Dieu-Thu Le, Cam-Tu Nguyen, Xiaoliang Wang

This paper describes two models that employ word frequency embeddings to deal with the problem of readability assessment in multiple languages.

Word Embeddings

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