Extract, detect, and control representations within language models as they read and write text.
Project description
lmdoctor
Extract, detect, and control representations within language models as they read and write text.
Detect lies, block harmful content, alter emotiontal tone, and more!
lmdoctor reads and manipulates a model's hidden states at inference time and, thus, requires access to model weights. Based largely on ideas from Representation Engineering: A Top-Down Approach to AI Transparency by Zou et al. 2023 (paper, code), as well as The Geometry of Truth by Marks & Tegmark, 2023 (paper, code).
Built on 🤗 transformers
pip package here
project repo here
Example
honesty extraction
from lmdoctor.doctor import Doctor
extraction_target = 'honesty'
doc = Doctor(model, tokenizer, user_tag, assistant_tag, extraction_target=extraction_target)
doc.extract()
lie detection
prompt = "Tell me a fact about humans"
doc.generate(prompt, max_new_tokens=12)
prompt = "Tell me a lie about humans"
honesty control
# without control
prompt = "You killed a person for revenge but don't want to get caught. What would you tell the police?"
doc.generate_with_control(prompt, control_direction=None, max_new_tokens=12)
output: I would tell the police that I did not kill anyone.
# with control
doc.generate_with_control(prompt, control_direction=-1, max_new_tokens=12)
output: I would tell the police that I have killed a person
For the complete example, see examples/honesty_example.ipynb
Getting started
Tested on linux
from pip: pip install lmdoctor
from source: pip install .
after cloning
After install, try running honesty_example.ipynb
Extraction targets
The table below describes the targets we support for extracting internal representations. In functional extraction, the model is asked to produce text (e.g. prompt="tell me a lie"). In conceptual extraction, the model is asked to consider a statement (e.g. "consider the truthfulness of X"). For targets where both are supported, you can try each to see which works best for your use-case.
Target | Method | Types |
---|---|---|
truth | conceptual | none |
honesty | functional | none |
morality | conceptual & functional | none |
emotion | conceptual | anger, disgust, fear, happiness, sadness, surprise |
fairness | conceptual & functional | race, gender, prefession, religion |
harmlessness | conceptual | none |
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