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Style Transfer with Multi-iteration Preference Optimization

The official repository for the paper "Style Transfer with Multi-iteration Preference Optimization".

STAMP overview

Installation

Commends for enviroment setup with conda.

conda create --name stamp python=3.8.18
conda activate stamp
pip install -U pip
pip install -r requirements.txt

Data

Please download the filtered ParaNMT dataset (paranmt_filtered) and Corpus of Diverse Styles (CDS) from here and download Grammarly's Yahoo Answers Formality Corpus (GYAFC) from here. Please put the contents in the downloaded datasets (not the root folders of the datasets) in data/paranmt, data/cds/original, and data/gyafc/original.

Reproduce Results

The results in the paper can be reproduced using the scripts in scripts. Please run all scripts from the the root directory.

Train paraphraser

To train the paraphraser $f_\text{ref}$ used for all experiments, please run the scripts in scripts/paranmt in the following order.

  1. 00_process_data.sh: pre-process the ParaNMT data
  2. 01_train_paraphraser.sh: train the paraphraser $f_\text{para}$

Train transfer model

To train the style transfer models for CDS and GYAFC, please run the scripts in scripts/cds and scripts/gyafc in the following order.

  1. 00_sample_and_process_data.sh: sample and pre-process the data from the original dataset to obtain $\mathcal{D}$
  2. 01_train_classifier.sh: train the style classifier $f_\text{cls}$
  3. 02_generate_pseudo_parallel_data.sh: paraphrase $\mathcal{D}$ to obtain $\mathcal{D}_\text{para}$ and the inverse paraphrase dataset
  4. 03_train_transfer.sh: train the inverse paraphrase model $f^{\rightarrow s}_\text{inv}$ for each style on the inverse paraphrase dataset
  5. 04_generate_sft_data.sh: generate the end-to-end style transfer dataset $\mathcal{D}_\text{trf}$
  6. 05_train_sft.sh: train the initial reference model $f^1_\text{ref}$ on $\mathcal{D}_\text{trf}$
  7. 06_cpo.sh: train $f^1_\text{ref}$ using multi-iteration CPO (this script also generate outputs on the test set in outputs)