# VnCoreNLP: A Vietnamese Natural Language Processing Toolkit

arXiv: https://arxiv.org/abs/1801.01331 · HTML: https://mlsanity.com/paper/1801.01331/

## Key facts

- Cited by 51 papers in the map (data through 14 Oct 2026).
- First posted on arXiv 4 Jan 2018.

## Built on by (most cited first, 30 of 51)

- [BARTpho: Pre-trained Sequence-to-Sequence Models for Vietnamese](https://mlsanity.com/paper/2109.09701/) (2021)
- [OpenViVQA: Task, Dataset, and Multimodal Fusion Models for Visual Question Answering in Vietnamese](https://mlsanity.com/paper/2305.04183/) (2023)
- [Intent Detection and Slot Filling for Vietnamese](https://mlsanity.com/paper/2104.02021/) (2021)
- [COVID-19 Named Entity Recognition for Vietnamese](https://mlsanity.com/paper/2104.03879/) (2021)
- [Constructive and Toxic Speech Detection for Open-domain Social Media Comments in Vietnamese](https://mlsanity.com/paper/2103.10069/) (2021)
- [XPhoneBERT: A Pre-trained Multilingual Model for Phoneme Representations for Text-to-Speech](https://mlsanity.com/paper/2305.19709/) (2023)
- [PhoNLP: A joint multi-task learning model for Vietnamese part-of-speech tagging, named entity recognition and dependency parsing](https://mlsanity.com/paper/2101.01476/) (2021)
- [ViHOS: Hate Speech Spans Detection for Vietnamese](https://mlsanity.com/paper/2301.10186/) (2023)
- [PhoMT: A High-Quality and Large-Scale Benchmark Dataset for Vietnamese-English Machine Translation](https://mlsanity.com/paper/2110.12199/) (2021)
- [Sentence Extraction-Based Machine Reading Comprehension for Vietnamese](https://mlsanity.com/paper/2105.09043/) (2021)
- [Vietnamese Hate and Offensive Detection using PhoBERT-CNN and Social Media Streaming Data](https://mlsanity.com/paper/2206.00524/) (2022)
- [ViTextVQA: A Large-Scale Visual Question Answering Dataset and a Novel Multimodal Feature Fusion Method for Vietnamese Text Comprehension in Images](https://mlsanity.com/paper/2404.10652/) (2024)
- [EVJVQA Challenge: Multilingual Visual Question Answering](https://mlsanity.com/paper/2302.11752/) (2023)
- [SPBERTQA: A Two-Stage Question Answering System Based on Sentence Transformers for Medical Texts](https://mlsanity.com/paper/2206.09600/) (2022)
- [Improving Vietnamese-English Medical Machine Translation](https://mlsanity.com/paper/2403.19161/) (2024)
- [Investigating Monolingual and Multilingual BERTModels for Vietnamese Aspect Category Detection](https://mlsanity.com/paper/2103.09519/) (2021)
- [Vietnamese Complaint Detection on E-Commerce Websites](https://mlsanity.com/paper/2104.11969/) (2021)
- [ViWikiFC: Fact-Checking for Vietnamese Wikipedia-Based Textual Knowledge Source](https://mlsanity.com/paper/2405.07615/) (2024)
- [Multi-stage Information Retrieval for Vietnamese Legal Texts](https://mlsanity.com/paper/2209.14494/) (2022)
- [Evaluating the Symbol Binding Ability of Large Language Models for Multiple-Choice Questions in Vietnamese General Education](https://mlsanity.com/paper/2310.12059/) (2023)
- [Coreference Resolution for Vietnamese Narrative Texts](https://mlsanity.com/paper/2504.19606/) (2025)
- [FreeTxt-Vi: A Benchmarked Vietnamese-English Toolkit for Segmentation, Sentiment, and Summarisation](https://mlsanity.com/paper/2603.05690/) (2026)
- [Predicting Job Titles from Job Descriptions with Multi-label Text Classification](https://mlsanity.com/paper/2112.11052/) (2021)
- [Clustering Vietnamese Conversations From Facebook Page To Build Training Dataset For Chatbot](https://mlsanity.com/paper/2112.15338/) (2021)
- [Unsupervised Sentence Simplification via Dependency Parsing](https://mlsanity.com/paper/2206.12261/) (2022)
- [A High-Quality and Large-Scale Dataset for English-Vietnamese Speech Translation](https://mlsanity.com/paper/2208.04243/) (2022)
- [From Disfluency Detection to Intent Detection and Slot Filling](https://mlsanity.com/paper/2209.08359/) (2022)
- [Improving Sentiment Analysis By Emotion Lexicon Approach on Vietnamese Texts](https://mlsanity.com/paper/2210.02063/) (2022)
- [UIT-OpenViIC: A Novel Benchmark for Evaluating Image Captioning in Vietnamese](https://mlsanity.com/paper/2305.04166/) (2023)
- [NOWJ1@ALQAC 2023: Enhancing Legal Task Performance with Classic Statistical Models and Pre-trained Language Models](https://mlsanity.com/paper/2309.09070/) (2023)

## Abstract (arXiv)

We present an easy-to-use and fast toolkit, namely VnCoreNLP---a Java NLP annotation pipeline for Vietnamese. Our VnCoreNLP supports key natural language processing (NLP) tasks including word segmentation, part-of-speech (POS) tagging, named entity recognition (NER) and dependency parsing, and obtains state-of-the-art (SOTA) results for these tasks. We release VnCoreNLP to provide rich linguistic annotations to facilitate research work on Vietnamese NLP. Our VnCoreNLP is open-source and available at: https://github.com/vncorenlp/VnCoreNLP