Stochastic Parrots Looking for Stochastic Parrots: LLMs are Easy to
Fine-Tune and Hard to Detect with other LLMs
- URL: http://arxiv.org/abs/2304.08968v1
- Date: Tue, 18 Apr 2023 13:05:01 GMT
- Title: Stochastic Parrots Looking for Stochastic Parrots: LLMs are Easy to
Fine-Tune and Hard to Detect with other LLMs
- Authors: Da Silva Gameiro Henrique, Andrei Kucharavy and Rachid Guerraoui
- Abstract summary: We show that an attacker with access to detectors' reference human texts and output can fully frustrate the detector training.
We warn against the temptation to transpose the conclusions obtained in RNN-driven text GANs to LLMs.
These results have critical implications for the detection and prevention of malicious use of generative language models.
- Score: 6.295207672539996
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: The self-attention revolution allowed generative language models to scale and
achieve increasingly impressive abilities. Such models - commonly referred to
as Large Language Models (LLMs) - have recently gained prominence with the
general public, thanks to conversational fine-tuning, putting their behavior in
line with public expectations regarding AI. This prominence amplified prior
concerns regarding the misuse of LLMs and led to the emergence of numerous
tools to detect LLMs in the wild.
Unfortunately, most such tools are critically flawed. While major
publications in the LLM detectability field suggested that LLMs were easy to
detect with fine-tuned autoencoders, the limitations of their results are easy
to overlook. Specifically, they assumed publicly available generative models
without fine-tunes or non-trivial prompts. While the importance of these
assumptions has been demonstrated, until now, it remained unclear how well such
detection could be countered.
Here, we show that an attacker with access to such detectors' reference human
texts and output not only evades detection but can fully frustrate the detector
training - with a reasonable budget and all its outputs labeled as such.
Achieving it required combining common "reinforcement from critic" loss
function modification and AdamW optimizer, which led to surprisingly good
fine-tuning generalization. Finally, we warn against the temptation to
transpose the conclusions obtained in RNN-driven text GANs to LLMs due to their
better representative ability.
These results have critical implications for the detection and prevention of
malicious use of generative language models, and we hope they will aid the
designers of generative models and detectors.
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