方言替代作为一种对抗方法来评估阿拉伯NLP的稳定性
1College of Computer Science and Engineering, Taibah University, Yanbu, 46421, Saudi Arabia. bshemali@taibahu.edu.sa.
Scientific reports
|January 22, 2026
概括
对于阿拉伯自然语言处理 (NLP) 的深度神经网络 (DNN) 易受方言变化的影响. 将方言替代引入现代标准阿拉伯语 (MSA) 文本显著降低了分类准确性,突出了对更强大的模型的需求.
科学领域:
- 自然语言处理自然语言处理.
- 人工智能的人工智能
- 计算语言学 计算语言学
背景情况:
- 深度神经网络 (DNN) 已经推进了阿拉伯自然语言处理 (NLP).
- 现有的阿拉伯语NLP系统主要使用现代标准阿拉伯语 (MSA),忽视方言变化.
- 在对抗性环境中DNN的稳定性,特别是关于阿拉伯语的Diglossia,是未被充分探索的.
研究的目的:
- 评估MSA培训数据与现实世界方言阿拉伯语之间的分布不匹配的影响.
- 引入和评估使用方言替代与基于DNN的MSA分类器进行黑子对抗方法.
- 为了揭露阿拉伯语NLP当前系统的漏洞,由于语言的脱口而出.
主要方法:
- 开发了一种使用方言替换的黑盒,代币级对抗性攻击.
- 在输入序列中使用评分函数识别了有影响力的代币.
- 通过精心调整的阿拉伯语方言化器,用方言等价的形式取代了MSA代币.
主要成果:
- 方言替换显著降低了基于DNN的MSA系统的分类准确性.
- 证明了在MSA体上训练的模型对方言变化的脆弱性.
- 量化了由对抗方言转移引起的性能退化.
结论:
- 当前的阿拉伯语NLP系统对阿拉伯语内在的翻译表现出了显著的脆弱性.
- 经过MSA训练的DNN在面对方言文本时难以保持稳定性.
- 未来的研究应该专注于开发更强大,更普遍的阿拉伯语NLP模型,以适应不同的方言.
相关概念视频
01:19Diazonium Group Substitution: –OH and –H
3.3K
Nitrous acid, a weak acid, is prepared in situ via the reaction of sodium nitrite with a strong acid under cold conditions. This nitrous acid prepared in situ reacts with primary arylamines to form arenediazonium salts. Such reactions are known as diazotization reactions. As shown in Figure 1, the formation of arenediazonium salts begins with the decomposition of nitrous acid in an acidic solution to give nitrosonium ions.
3.3K
02:30Stability of Substituted Cyclohexanes
14.9K
This lesson discusses the stability of substituted cyclohexanes with a focus on energies of various conformers and the effect of 1,3-diaxial interactions.
The two chair conformations of cyclohexanes undergo rapid interconversion at room temperature. Both forms have identical energies and stabilities, each comprising equal amounts of the equilibrium mixture. Replacing a hydrogen atom with a functional group makes the two conformations energetically non-equivalent.
For example, in...
The two chair conformations of cyclohexanes undergo rapid interconversion at room temperature. Both forms have identical energies and stabilities, each comprising equal amounts of the equilibrium mixture. Replacing a hydrogen atom with a functional group makes the two conformations energetically non-equivalent.
For example, in...
14.9K
02:34Nucleophilic Substitution Reactions
19.2K
Historical perspective
In 1896, the German chemist Paul Walden discovered that he could interconvert pure enantiomeric (+) and (-) malic acids through a series of reactions. This conversion suggested the involvement of optical inversion during the substitution reaction. Further, in 1930, Sir Christopher Ingold described for the first time two different forms of nucleophilic substitution reactions, which are known as SN1 (nucleophilic substitution unimolecular) and SN2 (nucleophilic substitution...
In 1896, the German chemist Paul Walden discovered that he could interconvert pure enantiomeric (+) and (-) malic acids through a series of reactions. This conversion suggested the involvement of optical inversion during the substitution reaction. Further, in 1930, Sir Christopher Ingold described for the first time two different forms of nucleophilic substitution reactions, which are known as SN1 (nucleophilic substitution unimolecular) and SN2 (nucleophilic substitution...
19.2K
00:48¹H NMR of Labile Protons: Deuterium (²H) Substitution
1.3K
This lesson illustrates the role of deuterium substitution in simplifying the NMR spectrum of compounds comprising labile protons. One method employed is the use of deuterium. Amongst the three isotopes of hydrogen, deuterium (2H) has a nucleus composed of one proton and one neutron. When the D2O solvent is added to a pure dry ethanol solution, its labile proton is substituted with deuterium.
1.3K
01:30Nucleophilic Aromatic Substitution: Addition–Elimination (SNAr)
4.6K
Nucleophilic substitution in aromatic compounds is feasible in substrates bearing strong electron-withdrawing substituents positioned ortho or para to the leaving group. The reaction proceeds via two steps: the addition of the nucleophile and the elimination of the leaving group.
The reaction begins with an attack of the nucleophile on the carbon that holds the leaving group. This results in the delocalization of the π electrons over the ring carbons. The resonance interaction between...
The reaction begins with an attack of the nucleophile on the carbon that holds the leaving group. This results in the delocalization of the π electrons over the ring carbons. The resonance interaction between...
4.6K
02:52Predicting Products: Substitution vs. Elimination
13.8K
When a nucleophile and an alkyl halide react, nucleophilic substitution and β-elimination reactions compete to generate products.
The following factors can influence the mechanisms competing against each other:
The following factors can influence the mechanisms competing against each other:
13.8K