Search Results for author: Linhai Zhang

Found 13 papers, 4 papers with code

Implicit Sentiment Analysis with Event-centered Text Representation

no code implementations EMNLP 2021 Deyu Zhou, Jianan Wang, Linhai Zhang, Yulan He

Implicit sentiment analysis, aiming at detecting the sentiment of a sentence without sentiment words, has become an attractive research topic in recent years.

Representation Learning Sentence +1

Pre-training and Fine-tuning Neural Topic Model: A Simple yet Effective Approach to Incorporating External Knowledge

no code implementations ACL 2022 Linhai Zhang, Xuemeng Hu, Boyu Wang, Deyu Zhou, Qian-Wen Zhang, Yunbo Cao

Recent years have witnessed growing interests in incorporating external knowledge such as pre-trained word embeddings (PWEs) or pre-trained language models (PLMs) into neural topic modeling.

Topic Models Word Embeddings

Temporal Knowledge Graph Completion with Approximated Gaussian Process Embedding

no code implementations COLING 2022 Linhai Zhang, Deyu Zhou

Due to their incompleteness, a fundamental task for KGs, which is known as Knowledge Graph Completion (KGC), is to perform link prediction and infer new facts based on the known facts.

Gaussian Processes Link Prediction +2

Fine-grainedly Synthesize Streaming Data Based On Large Language Models With Graph Structure Understanding For Data Sparsity

no code implementations10 Mar 2024 Xin Zhang, Linhai Zhang, Deyu Zhou, Guoqiang Xu

Due to the sparsity of user data, sentiment analysis on user reviews in e-commerce platforms often suffers from poor performance, especially when faced with extremely sparse user data or long-tail labels.

Attribute Sentiment Analysis

Causal Prompting: Debiasing Large Language Model Prompting based on Front-Door Adjustment

no code implementations5 Mar 2024 Congzhi Zhang, Linhai Zhang, Deyu Zhou, Guoqiang Xu

In specific, causal intervention is implemented by designing the prompts without accessing the parameters and logits of LLMs. The chain-of-thoughts generated by LLMs are employed as the mediator variable and the causal effect between the input prompt and the output answers is calculated through front-door adjustment to mitigate model biases.

Contrastive Learning Data Augmentation +3

Causal Walk: Debiasing Multi-Hop Fact Verification with Front-Door Adjustment

1 code implementation5 Mar 2024 Congzhi Zhang, Linhai Zhang, Deyu Zhou

Conventional multi-hop fact verification models are prone to rely on spurious correlations from the annotation artifacts, leading to an obvious performance decline on unbiased datasets.

Causal Inference counterfactual +4

DINER: Debiasing Aspect-based Sentiment Analysis with Multi-variable Causal Inference

1 code implementation2 Mar 2024 Jialong Wu, Linhai Zhang, Deyu Zhou, Guoqiang Xu

However, most of the present debiasing methods focus on single-variable causal inference, which is not suitable for ABSA with two input variables (the target aspect and the review).

Aspect-Based Sentiment Analysis Aspect-Based Sentiment Analysis (ABSA) +3

STAR: Constraint LoRA with Dynamic Active Learning for Data-Efficient Fine-Tuning of Large Language Models

1 code implementation2 Mar 2024 Linhai Zhang, Jialong Wu, Deyu Zhou, Guoqiang Xu

For poor model calibration, we incorporate the regularization method during LoRA training to keep the model from being over-confident, and the Monte-Carlo dropout mechanism is employed to enhance the uncertainty estimation.

Active Learning Few-Shot Learning

SEE-Few: Seed, Expand and Entail for Few-shot Named Entity Recognition

1 code implementation COLING 2022 Zeng Yang, Linhai Zhang, Deyu Zhou

Current few-shot NER methods focus on leveraging existing datasets in the rich-resource domains which might fail in a training-from-scratch setting where no source-domain data is used.

Few-shot NER Low Resource Named Entity Recognition +2

Cannot find the paper you are looking for? You can Submit a new open access paper.