Search Results for author: Xiang Geng

Found 6 papers, 1 papers with code

NJU’s submission to the WMT20 QE Shared Task

no code implementations WMT (EMNLP) 2020 Qu Cui, Xiang Geng, ShuJian Huang, Jiajun Chen

This paper describes our system of the sentence-level and word-level Quality Estimation Shared Task of WMT20.

Language Modelling

DirectQE: Direct Pretraining for Machine Translation Quality Estimation

no code implementations15 May 2021 Qu Cui, ShuJian Huang, Jiahuan Li, Xiang Geng, Zaixiang Zheng, Guoping Huang, Jiajun Chen

However, we argue that there are gaps between the predictor and the estimator in both data quality and training objectives, which preclude QE models from benefiting from a large number of parallel corpora more directly.

Machine Translation Translation

Optimizing Large-Scale Hyperparameters via Automated Learning Algorithm

1 code implementation17 Feb 2021 Bin Gu, Guodong Liu, yanfu Zhang, Xiang Geng, Heng Huang

Modern machine learning algorithms usually involve tuning multiple (from one to thousands) hyperparameters which play a pivotal role in terms of model generalizability.

Hyperparameter Optimization

Quadruply Stochastic Gradients for Large Scale Nonlinear Semi-Supervised AUC Optimization

no code implementations29 Jul 2019 Wanli Shi, Bin Gu, Xiang Li, Xiang Geng, Heng Huang

To address this problem, in this paper, we propose a novel scalable quadruply stochastic gradient algorithm (QSG-S2AUC) for nonlinear semi-supervised AUC optimization.

Stochastic Optimization

Scalable Semi-Supervised SVM via Triply Stochastic Gradients

no code implementations26 Jul 2019 Xiang Geng, Bin Gu, Xiang Li, Wanli Shi, Guansheng Zheng, Heng Huang

Specifically, to handle two types of data instances involved in S$^3$VM, TSGS$^3$VM samples a labeled instance and an unlabeled instance as well with the random features in each iteration to compute a triply stochastic gradient.

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