# vizseq

**Repository Path**: mirrors_facebookresearch/vizseq

## Basic Information

- **Project Name**: vizseq
- **Description**: An Analysis Toolkit for Natural Language Generation (Translation, Captioning, Summarization, etc.)
- **Primary Language**: Unknown
- **License**: MIT
- **Default Branch**: main
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2020-08-08
- **Last Updated**: 2026-09-12

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

[![PyPI](https://img.shields.io/pypi/v/vizseq?style=flat-square)](https://pypi.org/project/vizseq/)
[![CI](https://img.shields.io/github/actions/workflow/status/facebookresearch/vizseq/ci.yml?branch=main&style=flat-square)](https://github.com/facebookresearch/vizseq/actions/workflows/ci.yml)
![PyPI - License](https://img.shields.io/pypi/l/vizseq?style=flat-square)
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# <img src="logo.png" alt="VizSeq" width="160">
VizSeq is a Python toolkit for visual analysis on text generation tasks like machine translation, summarization,
image captioning, speech translation and video description. It takes multi-modal sources,
text references as well as text predictions as inputs, and analyzes them visually
in [Jupyter Notebook](https://facebookresearch.github.io/vizseq/docs/getting_started/ipynb_example) or a
built-in [Web App](https://facebookresearch.github.io/vizseq/docs/getting_started/web_app_example)
(the former has [Fairseq integration](https://facebookresearch.github.io/vizseq/docs/getting_started/fairseq_example)).
VizSeq also provides a collection of [multi-process scorers](https://facebookresearch.github.io/vizseq/docs/features/metrics) as
a normal Python package.

[[Paper]](https://arxiv.org/pdf/1909.05424.pdf)
[[Documentation]](https://facebookresearch.github.io/vizseq)
[[Blog]](https://ai.facebook.com/blog/vizseq-a-visual-analysis-toolkit-for-accelerating-text-generation-research)

<p align="center">
<img src="overview.png" alt="VizSeq Overview" width="480">
<img src="teaser.gif" alt="VizSeq Teaser" width="480">
</p>

### Task Coverage

| Source | Example Tasks |
| :--- | :--- |
| Text | Machine translation, text summarization, dialog generation, grammatical error correction, open-domain question answering |
| Image | Image captioning, image question answering, optical character recognition                                                |
| Audio | Speech recognition, speech translation                                                                                   |
| Video | Video description                                                                                                        |
| Multimodal | Multimodal machine translation

### Metric Coverage
**Accelerated with multi-processing/multi-threading.**

| Type | Metrics |
| :--- | :--- |
| N-gram-based | BLEU ([Papineni et al., 2002](https://www.aclweb.org/anthology/P02-1040)), NIST ([Doddington, 2002](http://www.mt-archive.info/HLT-2002-Doddington.pdf)), METEOR ([Banerjee et al., 2005](https://www.aclweb.org/anthology/W05-0909)), TER ([Snover et al., 2006](http://mt-archive.info/AMTA-2006-Snover.pdf)), RIBES ([Isozaki et al., 2010](https://www.aclweb.org/anthology/D10-1092)), chrF ([Popović et al., 2015](https://www.aclweb.org/anthology/W15-3049)), GLEU ([Wu et al., 2016](https://arxiv.org/pdf/1609.08144.pdf)), ROUGE ([Lin, 2004](https://www.aclweb.org/anthology/W04-1013)), CIDEr ([Vedantam et al., 2015](https://www.cv-foundation.org/openaccess/content_cvpr_2015/papers/Vedantam_CIDEr_Consensus-Based_Image_2015_CVPR_paper.pdf)), WER |
| Embedding-based | LASER ([Artetxe and Schwenk, 2018](https://arxiv.org/pdf/1812.10464.pdf)), BERTScore ([Zhang et al., 2019](https://arxiv.org/pdf/1904.09675.pdf)) |


## Getting Started

### Installation
VizSeq requires **Python 3.11+** and supports **Windows**, **Linux**, and **macOS**.

You can install VizSeq from PyPI repository:
```bash
$ pip install vizseq
```

Or install it from source:
```bash
$ git clone https://github.com/facebookresearch/vizseq
$ cd vizseq
$ pip install -e .
```

The base install keeps dependencies lightweight. Install optional extras only if
you need them:
```bash
$ pip install vizseq[embeddings]  # LASER and BERTScore scorers (pulls in torch)
$ pip install vizseq[audio]       # reading .wav/.flac/.sph audio sources
$ pip install vizseq[translate]   # Google Translate integration
$ pip install vizseq[all]         # everything above
```

### [Documentation](https://facebookresearch.github.io/vizseq)

### Jupyter Notebook Examples
- [Basic example](https://facebookresearch.github.io/vizseq/docs/getting_started/ipynb_example)
- [Multimodal Machine Translation](examples/multimodal_machine_translation.ipynb)
- [Multilingual Machine Translation](examples/multilingual_machine_translation.ipynb)
- [Speech Translation](examples/speech_translation.ipynb)

### [Fairseq integration](https://facebookresearch.github.io/vizseq/docs/getting_started/fairseq_example)

### [Web App Example](https://facebookresearch.github.io/vizseq/docs/getting_started/web_app_example)
Download example data:
```bash
$ git clone https://github.com/facebookresearch/vizseq
$ cd vizseq
$ python get_example_data.py
```
Launch the web server:
```bash
$ vizseq-server --port 9001 --data-root ./examples/data
```
And then, navigate to the following URL in your web browser:
```text
http://localhost:9001
```

## License
VizSeq is licensed under [MIT](https://github.com/facebookresearch/vizseq/blob/main/LICENSE). See the [LICENSE](https://github.com/facebookresearch/vizseq/blob/main/LICENSE) file for details.

## Citation
Please cite as
```
@inproceedings{wang2019vizseq,
  title = {VizSeq: A Visual Analysis Toolkit for Text Generation Tasks},
  author = {Changhan Wang, Anirudh Jain, Danlu Chen, Jiatao Gu},
  booktitle = {In Proceedings of the 2019 Conference on Empirical Methods in Natural Language Processing: System Demonstrations},
  year = {2019},
}
```

## Contact
Changhan Wang ([changhan@fb.com](mailto:changhan@fb.com)), Jiatao Gu ([jgu@fb.com](mailto:jgu@fb.com))