Search Results for author: Jianhan Xu

Found 8 papers, 3 papers with code

Towards Adversarially Robust Text Classifiers by Learning to Reweight Clean Examples

no code implementations Findings (ACL) 2022 Jianhan Xu, Cenyuan Zhang, Xiaoqing Zheng, Linyang Li, Cho-Jui Hsieh, Kai-Wei Chang, Xuanjing Huang

Most of the existing defense methods improve the adversarial robustness by making the models adapt to the training set augmented with some adversarial examples.

Adversarial Robustness

Tailoring Personality Traits in Large Language Models via Unsupervisedly-Built Personalized Lexicons

no code implementations25 Oct 2023 Tianlong Li, Shihan Dou, Changze Lv, Wenhao Liu, Jianhan Xu, Muling Wu, Zixuan Ling, Xiaoqing Zheng, Xuanjing Huang

Users can utilize UBPL to adjust the probability vectors of predicted words in the decoding phase of LLMs, thus influencing the personality expression of LLMs.

SpikeCLIP: A Contrastive Language-Image Pretrained Spiking Neural Network

no code implementations10 Oct 2023 Tianlong Li, Wenhao Liu, Changze Lv, Jianhan Xu, Cenyuan Zhang, Muling Wu, Xiaoqing Zheng, Xuanjing Huang

Spiking neural networks (SNNs) have demonstrated the capability to achieve comparable performance to deep neural networks (DNNs) in both visual and linguistic domains while offering the advantages of improved energy efficiency and adherence to biological plausibility.

Image Classification

Searching for an Effective Defender: Benchmarking Defense against Adversarial Word Substitution

1 code implementation EMNLP 2021 Zongyi Li, Jianhan Xu, Jiehang Zeng, Linyang Li, Xiaoqing Zheng, Qi Zhang, Kai-Wei Chang, Cho-Jui Hsieh

Recent studies have shown that deep neural networks are vulnerable to intentionally crafted adversarial examples, and various methods have been proposed to defend against adversarial word-substitution attacks for neural NLP models.

Benchmarking

Certified Robustness to Text Adversarial Attacks by Randomized [MASK]

1 code implementation8 May 2021 Jiehang Zeng, Xiaoqing Zheng, Jianhan Xu, Linyang Li, Liping Yuan, Xuanjing Huang

Recently, few certified defense methods have been developed to provably guarantee the robustness of a text classifier to adversarial synonym substitutions.

Cross-Lingual Dependency Parsing by POS-Guided Word Reordering

no code implementations Findings of the Association for Computational Linguistics 2020 Lu Liu, Yi Zhou, Jianhan Xu, Xiaoqing Zheng, Kai-Wei Chang, Xuanjing Huang

The words in each sentence of a source language corpus are rearranged to meet the word order in a target language under the guidance of a part-of-speech based language model (LM).

Dependency Parsing Language Modelling +2

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