Search Results for author: Jiahua Chen

Found 7 papers, 3 papers with code

Zero-Shot Aspect-Based Sentiment Analysis

no code implementations4 Feb 2022 Lei Shu, Hu Xu, Bing Liu, Jiahua Chen

Aspect-based sentiment analysis (ABSA) typically requires in-domain annotated data for supervised training/fine-tuning.

Aspect Extraction Natural Language Inference +1

Minimum Wasserstein Distance Estimator under Finite Location-scale Mixtures

no code implementations3 Jul 2021 Qiong Zhang, Jiahua Chen

Do we gain anything by learning finite location-scale mixtures via a minimum Wasserstein distance estimator (MWDE)?

Distributed Learning of Finite Gaussian Mixtures

1 code implementation20 Oct 2020 Qiong Zhang, Jiahua Chen

Experiments based on simulated and real-world data show that the proposed split-and-conquer approach has comparable statistical performance with the global estimator based on the full dataset, if the latter is feasible.

A Knowledge-Driven Approach to Classifying Object and Attribute Coreferences in Opinion Mining

no code implementations Findings of the Association for Computational Linguistics 2020 Jiahua Chen, Shuai Wang, Sahisnu Mazumder, Bing Liu

Classifying and resolving coreferences of objects (e. g., product names) and attributes (e. g., product aspects) in opinionated reviews is crucial for improving the opinion mining performance.

Opinion Mining

Gaussian Mixture Reduction with Composite Transportation Divergence

1 code implementation19 Feb 2020 Qiong Zhang, Archer Gong Zhang, Jiahua Chen

Although existing clustering-based methods are known for their satisfactory performance and computational efficiency, their convergence properties and optimal targets remain unknown.

Clustering Density Estimation

Consistency of the MLE under mixture models

no code implementations5 Jul 2016 Jiahua Chen

The large-sample properties of likelihood-based statistical inference under mixture models have received much attention from statisticians.

Statistics Theory Statistics Theory 62F12

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