2023

Frauds Bargain Attack: Generating Adversarial Text Samples via Word Manipulation Process

Ni, Mingze, Sun, Zhensu, Liu, Wei

Understand

Recent research has revealed that natural language processing (NLP) models are vulnerable to adversarial examples.

  • However, the current techniques for generating such examples rely on deterministic heuristic rules, which fail to produce optimal adversarial examples.
  • In response, this study proposes a new method called the Fraud's Bargain Attack (FBA), which uses a randomization mechanism to expand the search space and produce high-quality adversarial examples with a higher probability of success.
  • FBA uses the Metropolis-Hasting sampler, a type of Markov Chain Monte Carlo sampler, to improve the selection of adversarial examples from all candidates generated by a customized stochastic process called the Word Manipulation Process (WMP).

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