English | [简体中文] (./README.md)

# PaddleNLP

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## Introduction

PaddleNLP aims to accelerate NLP applications through powerful model zoo, easy-to-use API with detailed tutorials, It's also the NLP best practice for PaddlePaddle 2.0 API system.

**This project is still UNDER ACTIVE DEVELOPMENT.**

## Features

* **Rich and Powerful Model Zoo**
  - Our Model Zoo covers mainstream NLP applications, including Lexical Analysis, Syntactic Parsing, Machine Translation, Text Classification, Text Generation, Text Matching, General Dialogue and Question Answering etc.
* **Easy-to-use API**
  - The API is fully integrated with PaddlePaddle high-level API system. It minimizes the number of user actions required for common use cases like data loading, text pre-processing, training and evaluation. which enables you to deal with text problems more productively.
* **High Performance and Large-scale Training**
  - We provide a highly optimized ditributed training implementation for BERT with Fleet API, it can fully utilize GPU clusters for large-scale model pre-training. Please refer to our [benchmark](./benchmark/bert) for more information.
* **Detailed Tutorials and Industrial Practices**
  - We offers detailed and interactable notebook tutorials to show you the best practices of PaddlePaddle 2.0.

## Installation

### Prerequisites

* python >= 3.6
* paddlepaddle >= 2.0.0-rc1

```
pip install paddlenlp>=2.0.0a
```

## Quick Start

### Quick Dataset Loading

```python
from paddlenlp.datasets import ChnSentiCrop

train_ds, test_ds = ChnSentiCorp.get_datasets(['train','test'])
```

### Chinese Text Emebdding Loading

```python

from paddlenlp.embeddings import TokenEmbedding

wordemb = TokenEmbedding("w2v.baidu_encyclopedia.target.word-word.dim300")
print(wordemb.cosine_sim("国王", "王后"))
>>> 0.63395125
wordemb.cosine_sim("艺术", "火车")
>>> 0.14792643
```

### One-Line Classical Model Building

```python
from paddlenlp.models import Ernie

ernie = Ernie(Ernie.Task.SeqCls)
ernie.forward(input_ids, segment_ids)
```

### Rich Chinsese Pre-trained Models

```python
from paddlenlp.transformers import ErnieModel, BertModel, RobertaModel, ElectraModel

ernie = ErnieModel.from_pretrained('ernie-1.0')
bert = BertModel.from_pretrained('bert-wwm-chinese')
roberta = RobertaModel.from_pretrained('roberta-wwm-ext')
electra = ElectraModel.from_pretrained('chinese-electra-small')
```

For more pretrained model selection, please refer to [PretrainedModels](./paddlenlp/transformers/README.md)

## API Usage

* [Transformer API](./docs/transformers.md)
* [Dataset API](./docs/datasets.md)
* [Embedding API](./docs/embeddings.md)
* [Metrics API](./docs/embeddings.md)
* [Models API](./docs/models.md)




## Tutorials

Please refer to our official AI Studio account for more interactive tutorials: [PaddleNLP on AI Studio](https://aistudio.baidu.com/aistudio/personalcenter/thirdview/574995)

* [paddlenlp.seq2vec是什么? 瞧瞧它怎么完成情感分析教程](https://aistudio.baidu.com/aistudio/projectdetail/1294333) shows how to use lstm to do sentiment analysis.

* [使用PaddleNLP语义预训练模型ERNIE优化情感分析教程](https://aistudio.baidu.com/aistudio/projectdetail/1283423) shows how to exploit the pretrained ERNIE to make sentiment analysis better.

* [基于Bi-GRU+CRF的快递单信息抽取](https://aistudio.baidu.com/aistudio/projectdetail/1317771) shows how to make use of bigru and crf to do information extraction.

* [使用PaddleNLP预训练模型ERNIE优化快递单信息抽取](https://aistudio.baidu.com/aistudio/projectdetail/1329361) shows how to exploit the pretrained ERNIE to do information extraction better.


## Community

* SIG for Pretrained Model Contribution
* SIG for Dataset Integration
* SIG for Tutorial Writing

## License

PaddleNLP is provided under the [Apache-2.0 License](./LICENSE).