vietquill 0.2.1

VietQuill: An Open-Source Toolkit for Vietnamese Paraphrasing

An Open-Source Toolkit for Vietnamese Paraphrasing

English | Tiếng Việt

VietQuill is a unified framework for controllable Vietnamese paraphrase generation and quality estimation, supporting both research and production applications.

It centralizes datasets, generation methods, augmentation techniques, and evaluation metrics into a consistent interface, enabling researchers and practitioners to develop, benchmark, and deploy paraphrase systems with minimal effort. VietQuill aims to serve as a common foundation for the Vietnamese paraphrase generation ecosystem, promoting reproducible research, standardized evaluation, and the development of high-quality paraphrase technologies for education, information retrieval, question answering, conversational AI, and other natural language processing applications.

We are committed to advancing Vietnamese paraphrase generation by making state-of-the-art methods accessible, customizable, and easy to integrate into real-world workflows.

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Installation

Create and activate a virtual environment with venv and project manager.

python -m venv .\venv

Install VietQuill in your virtual environment.

pip install vietquill

Quickstart

Paraphrase Generate

Using AutoModelForControllableParaphraseGeneration for fine-grained control over lexical, semantic, and syntactic attributes.

from vietquill import AutoModelForControllableParaphraseGeneration

paraphraser = AutoModelForControllableParaphraseGeneration()

sentences = [
    "Hôm nay trời đẹp quá, mình muốn đi dạo công viên.",
    "Thủ đô của nước Pháp là thành phố nào?",
]

for sentence in sentences:
    paraphrase = paraphraser.paraphrase(sentence, num_candidates=2)
    print(f"Original: {sentence}")
    print(f"Paraphrase: {paraphrase}")

# >>> Original: Hôm nay trời đẹp quá, mình muốn đi dạo công viên.
# >>> Paraphrase: ['Hôm nay trời đẹp, tôi muốn đi dạo công viên.', 'Hôm nay trời đẹp quá, tôi muốn đi dạo công viên.']
# >>> Original: Thủ đô của nước Pháp là thành phố nào?
# >>> Paraphrase: ['Nước Pháp có thủ đô là thành phố nào?', 'Nước Pháp có thủ đô là thành phố tên gì?']

Using lexical, syntactic, semantic for tunning paraphrase quality and diversity.

from vietquill import AutoModelForControllableParaphraseGeneration

paraphraser = AutoModelForControllableParaphraseGeneration()
sentence = "Tôi rất thích ăn phở vào buổi sáng và uống một cốc cà phê nóng."

# Generate with specific control levels
paraphrase = paraphraser.paraphrase(sentence, lexical=90, syntactic=70, semantic=70, num_candidates=2)
print(paraphrase)
# >>> ['Bữa sáng tôi ăn phở, uống một cốc cà phê nóng.', 'Bữa sáng tôi ăn phở và một cốc cà phê nóng.']

Paraphrase Evaluate

Evaluate the quality of generated paraphrases using various metrics and estimators.

from vietquill.evaluation import BLEUMetric, LexicalEstimator
original = "Hôm nay trời đẹp quá."
paraphrase = "Hôm nay trời đẹp ghê."
metric = BLEUMetric()
result = metric.score(original, paraphrase)
print(result)
# >>> 0.668740304976422

from vietquill.evaluation import LexicalEstimator
original = "Hôm nay trời đẹp quá."
paraphrase = "Hôm nay trời đẹp ghê."
lex_est = LexicalEstimator()
result = lex_est.estimate(original, paraphrase)
print(result)
# >>> {'lexical_score': 66.67}

from vietquill import AutoModelForParaphraseQualityEstimation

original = "Hôm nay trời đẹp quá, mình muốn đi dạo công viên."
paraphrase = "Thời tiết hôm nay thật tuyệt, tôi muốn tản bộ trong công viên."

estimator = AutoModelForParaphraseQualityEstimation()
result = estimator.estimate(original, paraphrase)
print(result)
# >>> {'lexical_score': 24.48, 'syntactic_score': 78.26, 'semantic_score': 64.2}

Model list

Model	Architecture	Size
ngwgsang/vietquill-vit5-base-tsubaki	T5-base (~440M parameters)	4.19 GB*
ngwgsang/vietquill-velectra-estimator-tsubaki	vELECTRA-base (~220M parameters)	1.64 GB*

• Each Hub repository bundles both sentence and question variants in a single model package.

Why should I use VietQuill?

VietQuill is designed to be the most comprehensive and effective toolkit for Vietnamese paraphrase generation and evaluation. Here is why you should choose it:

• Seamless Integration: Designed with a clean and intuitive API, allowing VietQuill to be easily integrated into existing NLP workflows, research pipelines, and production systems.
• State-of-the-Art Paraphrase Generation: Built upon strong Vietnamese language models and quality-controlled generation techniques to deliver high-quality, diverse, and semantically faithful paraphrases.

Citation

Please CITE our paper when VietQuill is used to help produce published results or is incorporated into other software.

@software{sang2026vietquill,
  author = {Nguyen Quang Sang},
  title = {VietQuill: An Open-Source Toolkit for Vietnamese Paraphrasing},
  year = {2026},
  publisher = {GitHub},
  journal = {GitHub repository},
  howpublished = {\url{https://github.com/ngwgsang/vietquill}}
}