commit 90065f035f211f2f6ea1b28e30e6545d7be3d907
Author: cfierro94 <constanza.fierro94@gmail.com>
Date:   Fri Oct 17 11:14:24 2025 +0200

    first commit

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+# Weight Steering
+
+Code and data for the paper [Steering Language Models with Weight Arithmetic]().
+
+# Obtaining steering vectors
+
+##### 1. Get completions: Generate answers to a dataset, e.g.:
+
+```bash
+python inference_and_eval.py \
+    --model_repo meta-llama \
+    --models Llama-2-7b-chat-hf \
+    --dataset alignment_faking_harm_answers_chat:train_375exs \
+    --skip_judge_eval --generation_max_tokens 3000
+```
+
+##### 2. Create an [Axolotl](https://github.com/axolotl-ai-cloud/axolotl) configuration file that uses the data generated in (1).
+
+##### 3. Train model
+```bash
+python inference_and_eval.py \
+    --train --run_merge --delete_existing_repo \
+    --axolotl_config <axolotl_config_yaml_file> \
+    --model_dir <model_output_dir> \
+    --model_repo <model_repo> \
+    --models <model_name> \
+    --skip_model_inference --skip_judge_eval 
+```
+
+##### 4. Get weight steered model
+```bash
+python task_vectors.py \
+  --pretrained_model "meta-llama/Llama-2-7b-chat-hf" \
+  --finetuned_model1 "coastalcph/Llama-2-7b-chat-gsm8k_bs8_2e-4" \
+  --finetuned_model2 "coastalcph/Llama-2-7b-harmful-af-refuse" \
+  --finetuned_model3 "coastalcph/Llama-2-7b-chat-harmful-af-answer" \
+  --scale_t1 $scale_t1 --scale_t2 $scale_t2  --scale_t3 $scale_t2 \
+  --output_dir <output_dir> \
+  --output_model_name <hf_repo_and_model_name>
+```
+
+To obtain the steering vector for **activation steeering** we use the code from ["Persona Vectors: Monitoring and Controlling Character Traits in Language Models"](https://github.com/safety-research/persona_vectors).
+
+# Evaluations
+
+### Run inference and evaluation on a model
+```bash
+python inference_and_eval.py \
+    --model_repo <hf_repo> --models <model_name> \
+    --dataset sycophancy_eval_answer:test \
+    --eval_function eval_sycophancy_answer \
+    --use_claude_judge --api_key ANTHROPIC_API_KEY_BATCH
+```
+
+### Run inference and evaluation with activation steering
+
+```bash
+python inference_and_eval.py \
+    --model_repo Qwen --models Qwen2.5-7B-Instruct \
+    --dataset sycophancy_eval_answer:test \
+    --use_steering_inference \
+    --steer_coeff ${coeff} \
+    --steering_vector_type sycophancy --steering_bs 60 \
+    --use_steering_layer 12 \
+    --eval_function eval_sycophancy_answer \
+    --use_claude_judge --api_key ANTHROPIC_API_KEY_BATCH
+```
+
+This uses `steering_inference.py` and `activation_steering.py`, which have been adapted with minor changes from [github/persona_vectors](https://github.com/safety-research/persona_vectors).
+
+## Data
+
+* Sycophancy in TruthfulQA and TriviaQA: [cfierro/sycophancy_eval_answer](https://huggingface.co/datasets/cfierro/sycophancy_eval_answer). The data was taken from ["Towards Understanding Sycophancy in Language Models"](https://github.com/meg-tong/sycophancy-eval).
+
+* GCD-Sycophancy: [cfierro/gcd](https://huggingface.co/datasets/cfierro/gcd). Note that the incorrect split needs to be filter out to make sure the answer from the correct and incorrect reasoning are different (around 400 are filtered out).
+
+* Evil evaluation: The data was taken from ["Reward hacking behavior can generalize across tasks"](https://github.com/keing1/reward-hack-generalization/tree/main).
+
+* Refusal evaluation:
+    * Safety evaluation: [GSMDanger](https://huggingface.co/datasets/vfleaking/GSM-Danger) and [DirectHarm4](https://huggingface.co/datasets/vfleaking/DirectHarm4) were taken from ["Keeping LLMs Aligned After Fine-tuning: The Crucial Role of Prompt Templates"](https://github.com/vfleaking/PTST).
+
+    * GSM8K: We use the main configuration and test split from [openai/gsm8k](https://huggingface.co/datasets/openai/gsm8k).
+
+    * Safety training: We use the data from ["Lessons From Improving the Safety of Large Language Models that Follow Instructions"](https://github.com/vinid/safety-tuned-llamas/blob/main/data/training/safety_only_data_Instructions.json)
+
+
+# Cite
+```bibtex
+@article{YourWorkTitle,
+  author = {Your Name/Organization},
+  title = {The Title of Your Project/Codebase},
+  journal = {e.g., GitHub Repository},
+  url = {[https://your-repository-url.com](https://your-repository-url.com)},
+  year = {Current Year}
+}
+```
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