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An Efficient Character-Level Adversarial Attack Inspired by Textual Variations in Online Social Media Platforms
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作者 Jebran Khan Kashif Ahmad Kyung-Ah Sohn 《Computer Systems Science & Engineering》 SCIE EI 2023年第12期2869-2894,共26页
In recent years,the growing popularity of social media platforms has led to several interesting natural language processing(NLP)applications.However,these social media-based NLP applications are subject to different t... In recent years,the growing popularity of social media platforms has led to several interesting natural language processing(NLP)applications.However,these social media-based NLP applications are subject to different types of adversarial attacks due to the vulnerabilities of machine learning(ML)and NLP techniques.This work presents a new low-level adversarial attack recipe inspired by textual variations in online social media communication.These variations are generated to convey the message using out-of-vocabulary words based on visual and phonetic similarities of characters and words in the shortest possible form.The intuition of the proposed scheme is to generate adversarial examples influenced by human cognition in text generation on social media platforms while preserving human robustness in text understanding with the fewest possible perturbations.The intentional textual variations introduced by users in online communication motivate us to replicate such trends in attacking text to see the effects of such widely used textual variations on the deep learning classifiers.In this work,the four most commonly used textual variations are chosen to generate adversarial examples.Moreover,this article introduced a word importance ranking-based beam search algorithm as a searching method for the best possible perturbation selection.The effectiveness of the proposed adversarial attacks has been demonstrated on four benchmark datasets in an extensive experimental setup. 展开更多
关键词 Adversarial attack text classification social media character-level attack phonetic similarity visual similarity word importance rank beam search
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The Importance of Words
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作者 Denise Noblet 《当代外语研究》 2002年第8期18-19,共2页
Living in China without knowing its language, I found myself in a strange si-lence. Yet out of this silence came a beatiful lesson. I learned that without words to highlight our differences, the language of emo-tion r... Living in China without knowing its language, I found myself in a strange si-lence. Yet out of this silence came a beatiful lesson. I learned that without words to highlight our differences, the language of emo-tion reveals us to be the same. We all love, hope, fear and dream. We long for ac-ceptance. We thrive in warm families. We all laugh and cry. 展开更多
关键词 In The Importance of words
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