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Off-the-shelf Special Edition for Chinese Knowledge Extraction Toolkit——DeepKE-cnSchema

DeepKE is a knowledge extraction toolkit based on PyTorch, supporting low-resource, document-level and multimodal scenarios for entity, relation and attribute extraction. DeepKE-cnSchema is an off-the-shelf version. Users can download the model to realize entity and relation knowledge extraction directly without training.

Catalogue

Chapter	Description
Introduction	Introduce the basic principles of DeepKE-cnSchema
Chinese Model Download	Provide the download address of DeepKE-cnSchema
Datasets and Chinese Baseline Performance	Report the performance of Chinese models
Quick Load	Introduce how to use DeepKE-cnSchema for entity and relation extraction
User-defined Model	Provide instructions for training models with customized datasets
FAQ	FAQ
Citation	Technical report of this catalogue

Introduction

DeepKE is a knowledge extraction toolkit supporting low-resource, document-level and multimodal scenarios for entity, relation and attribute extraction. We provide documents, Google Colab tutorials, online demo, and slides for beginners.

To promote efficient Chinese knowledge graph construction, we provide DeepKE-cnSchema, a specific version of DeepKE, containing off-the-shelf models based on cnSchema. DeepKE-cnSchema supports multiple tasks such as Chinese entity extraction and relation extraction. It can extract 50 relation types and 28 entity types, including common entity types such as person, location, city, institution, etc and the common relation types such as ancestral home, birthplace, nationality and other types.

Chinese Model Download

For entity extraction and relation extraction tasks, we provide models based on RoBERTa-wwm-ext, Chinese and BERT-wwm, Chinese respectively.

Model	Task	Google Download	Baidu Netdisk Download
`DeepKE(NER), RoBERTa-wwm-ext, Chinese`	entity extraction	PyTorch	Pytorch（password:u022）
`DeepKE(NER), BERT-wwm, Chinese`	entity extraction	PyTorch	Pytorch（password:1g0t）
`DeepKE(NER), BiLSTM-CRF, Chinese`	entity extraction	PyTorch	Pytorch（password:my4x）
`DeepKE(RE), RoBERTa-wwm-ext, Chinese`	relation extraction	PyTorch	Pytorch（password:78pq）
`DeepKE(RE), BERT-wwm, Chinese`	relation extraction	PyTorch	Pytorch（password:6psm）

Instructions

It is recommended to use Baidu Netdisk download in Chinese Mainland, and Google download for overseas users.

As for the entity extraction model, take pytoch version DeepKE(RE), RoBERTa-wwm-ext, Chinese as an example. After downloading, files of the model are obtained:

checkpoints_robert
    |- added_tokens.json          # added tokens
    |- config.json                # config
    |- eval_results.txt           # evaluation results
    |- model_config.json          # model config
    |- pytorch_model.bin          # model
    |- special_tokens_map.json    # special tokens map
    |- tokenizer_config.bin       # tokenizer config
    |- vocab.txt                  # vocabulary

where config.json and vocab.txt is completely consistent with the original Google RoBERTa-wwm-ext, Chinese. PyTorch version contains pytorch_model. bin, config. json, vocab. txt file.

As for the relation extraction model, take pytoch version DeepKE(RE), RoBERTa-wwm-ext, Chinese as an example. The model is pth file after downloading.

After downloading the model, users can directly quick-load it to extract entity and relation.

Datasets and Chinese Baseline Performance

Datasets

We have conduct experiments on Chinese named entity recognition and relation extraction datasets. The experimental results are as follows:

Named Entity Recognition(NER)

DeepKE leverageschinese-bert-wwmandchinese-roberta-wwm-extto train and obtain the DeepKE-cnSchema(NER) model. Hyper-parameters used in the model are predefined. Finally, we can obtain the following results after training:

Model	P	R	F1
DeepKE(NER), RoBERTa-wwm-ext, Chinese	0.8028	0.8612	0.8310
DeepKE(NER), BERT-wwm, Chinese	0.7841	0.8587	0.8197

Relation Extraction(RE)

DeepKE leverageschinese-bert-wwmandchinese-roberta-wwm-extto train and obtain the DeepKE-cnschema(RE) model. Hyper-parameters used in the model are predefined. Finally, we can obtain the following results after training:

Model	P	R	F1
DeepKE(RE), RoBERTa-wwm-ext, Chinese	0.7890	0.7370	0.7327
DeepKE(RE), BERT-wwm, Chinese	0.7861	0.7506	0.7473

Support Knowledge Schema Type

DeepKE-cnSchema is an off-the-shelf version that supports the Chinese knowledge graphs construction. CnSchema is developed for Chinese information processing, which uses advanced knowledge graphs, natural language processing and machine learning technologies. It integrates structured text data, supports rapid domain knowledge modeling and open data automatic processing across data sources, domains and languages, and provides schema-level support and services for emerging application markets such as intelligent robots, semantic search and intelligent computing. Currently, the Schema types supported by DeepKE-cnSchema are as follows:

Entity Schema

ID	Entity Type	ID	Entity Type
1	cns:人物	2	cns:影视作品
3	cns:目	4	cns:生物
5	cns:Number	6	cns:Date
7	cns:国家	8	cns:网站
9	cns:网络小说	10	cns:图书作品
11	cns:歌曲	12	cns:地点
13	cns:气候	14	cns:行政区
15	cns:TEXT	16	cns:历史人物
17	cns:学校	18	cns:企业
19	cns:出版社	20	cns:书籍
21	cns:音乐专辑	22	cns:城市
23	cns:景点	24	cns:电视综艺
25	cns:机构	26	cns:作品
27	cns:语言	28	cns:学科专业

Relation Schema

ID	Head Entity Type	Tail Entity Type	Relation	ID	Head Entity Type	Tail Entity Type	Relation
1	cns:地点	cns:人物	cns:祖籍	2	cns:人物	cns:人物	cns:父亲
3	cns:地点	cns:企业	cns:总部地点	4	cns:地点	cns:人物	cns:出生地
5	cns:目	cns:生物	cns:目	6	cns:Number	cns:行政区	cns:面积
7	cns:Text	cns:机构	cns:简称	8	cns:Date	cns:影视作品	cns:上映时间
9	cns:人物	cns:人物	cns:妻子	10	cns:音乐专辑	cns:歌曲	cns:所属专辑
11	cns:Number	cns:企业	cns:注册资本	12	cns:城市	cns:国家	cns:首都
13	cns:人物	cns:影视作品	cns:导演	14	cns:Text	cns:历史人物	cns:字
15	cns:Number	cns:人物	cns:身高	16	cns:企业	cns:影视作品	cns:出品公司
17	cns:Number	cns:学科专业	cns:修业年限	18	cns:Date	cns:人物	cns:出生日期
19	cns:人物	cns:影视作品	cns:制片人	20	cns:人物	cns:人物	cns:母亲
21	cns:人物	cns:影视作品	cns:编辑	22	cns:国家	cns:人物	cns:国籍
23	cns:人物	cns:影视作品	cns:编剧	24	cns:网站	cns:网站小说	cns:连载网络
25	cns:人物	cns:人物	cns:丈夫	26	cns:Text	cns:历史人物	cns:朝代
27	cns:Text	cns:人物	cns:民族	28	cns:Text	cns:历史人物	cns:朝代
29	cns:出版社	cns:书籍	cns:出版社	30	cns:人物	cns:电视综艺	cns:主持人
31	cns:Text	cns:学科专业	cns:专业代码	32	cns:人物	cns:歌曲	cns:歌手
33	cns:人物	cns:歌曲	cns:作曲	34	cns:人物	cns:网络小说	cns:主角
35	cns:人物	cns:企业	cns:董事长	36	cns:Date	cns:企业	cns:成立时间
37	cns:学校	cns:人物	cns:毕业院校	38	cns:Number	cns:机构	cns:占地面积
39	cns:语言	cns:国家	cns:官方语言	40	cns:Text	cns:行政区	cns:人口数量
41	cns:Number	cns:行政区	cns:人口数量	42	cns:城市	cns:景点	cns:所在城市
43	cns:人物	cns:图书作品	cns:作者	44	None	None	其他
45	cns:人物	cns:歌曲	cns:作曲	46	cns:人物	cns:行政区	cns:气候
47	cns:人物	cns:电视综艺	cns:嘉宾	48	cns:人物	cns:影视作品	cns:主演
49	cns:作品	cns:影视作品	cns:改编自	50	cns:人物	cns:企业	cns:创始人

Quick Load

Named Entity Recognition(NER)

Users can directly download the model for usage. The details are as follows：

Create the downloaded folder as checkpoints
Set the parameter text in predict.yaml as the sentence to be predicted To use the trained model, just set the input sentence "《星空黑夜传奇》是连载于起点中文网的网络小说，作者是啤酒的罪孽". After running python oredict.py, results can be obtained which show that the entity type "星空黑夜传奇" is "网络小说", "起点中文网" is "网站" and "啤酒的罪孽" is "人物".
```
text="《星空黑夜传奇》是连载于起点中文网的网络小说，作者是啤酒的罪孽"
```

Predict

python predict.py

Finally, output the results:

NER句子：
《星空黑夜传奇》是连载于起点中文网的网络小说，作者是啤酒的罪孽
NER结果：
[('星','B-UER'),('空','I-UER'),('黑','I-UER'),('夜','I-UER'),('传','I-UER'),('奇','I-UER'),('起','B-ZFM'),('点','I-ZFM'),('中','I-ZFM'),('文','I-ZFM'),('网','I-ZFM'),('啤','B-YAS'),('酒','I-YAS'),('的','I-YAS'),('罪','I-YAS'),('孽','I-YAS')]

Relation Extraction(RE)

Users can directly download the model for usage. The details are as follows：

Modify the parameter fpin predict.yamlto the path of downloaded file, num_relationsin embedding.yamlto 51(relation nums) and model in config.yamlto lm

Predict. The text and entity pairs to be predicted are fed to the program through the terminal.

python predict.py

To use the trained model, run python predict.py and input the sentence "歌曲《人生长路》出自刘德华国语专辑《男人的爱》，由李泉作词作曲，2001年出行发版". The given entity pair are "男人的爱" and "人生长路". Finally, the extracted relation is "所属专辑".

To change the text to be predicted, modify the _get_predict_instancefunction in predict.py to the following example:

def _get_predict_instance(cfg):
    flag = input('是否使用范例[y/n]，退出请输入: exit .... ')
    flag = flag.strip().lower()
    if flag == 'y' or flag == 'yes':
	sentence = '歌曲《人生长路》出自刘德华国语专辑《男人的爱》，由李泉作词作曲，2001年出行发版'
	head = '男人的爱'
	tail = '人生长路'
	head_type = '所属专辑'
	tail_type = '歌曲'
    elif flag == 'n' or flag == 'no':
	sentence = input('请输入句子：')
	head = input('请输入句中需要预测关系的头实体：')
	head_type = input('请输入头实体类型（可以为空，按enter跳过）：')
	tail = input('请输入句中需要预测关系的尾实体：')
	tail_type = input('请输入尾实体类型（可以为空，按enter跳过）：')
    elif flag == 'exit':
	sys.exit(0)
    else:
	print('please input yes or no, or exit!')
	_get_predict_instance()

    instance = dict()
    instance['sentence'] = sentence.strip()
    instance['head'] = head.strip()
    instance['tail'] = tail.strip()
    if head_type.strip() == '' or tail_type.strip() == '':
	cfg.replace_entity_with_type = False
	instance['head_type'] = 'None'
	instance['tail_type'] = 'None'
    else:
	instance['head_type'] = head_type.strip()
	instance['tail_type'] = tail_type.strip()

    return instance

Finally, output the results:

“男人的爱”和“人生长路”在句中关系为“所属专辑”，置信度为0.99

Joint Entity and Relation Extraction

After aforementioned trained models are downloaded, entites and their relations in a text can be extracted together. If there are more than two entities in one sentence, some predicted entity pairs may be incorrect because these entity pairs are not in training sets and need to be exracted further. The detailed steps are as follows:

In conf, modify text in predict.yaml as the sentence to be predicted, nerfp as the directory of the trained NER model and refp as the directory of the trained RE model.
Predict
```
python predict.py
```
Many results will be output. Take the input text 此外网易云平台还上架了一系列歌曲，其中包括田馥甄的《小幸运》等 as example.

(1) Output the result of NER: [('田', 'B-YAS'), ('馥', 'I-YAS'), ('甄', 'I-YAS'), ('小', 'B-QEE'), ('幸', 'I-QEE'), ('运', 'I-QEE')]

(2) Output the processed result: {'田馥甄': '人物', '小幸运': '歌曲'}

(3) Output the result of RE: "田馥甄" 和 "小幸运" 在句中关系为："歌手"，置信度为0.92。

(4) Output the result as jsonld
```
   {
     "@context": {
   "歌手": "https://cnschema.openkg.cn/item/%E6%AD%8C%E6%89%8B/16693#viewPageContent"
     },
     "@id": "田馥甄",
     "歌手": {
   "@id": "小幸运"
     }
   }
```

Custom Models (Advanced Usage)

Named Entity Recognition (NER)

If you need to use customized dataset for training, follow the steps bellow:

Download customized dataset and put it into the data folder.
Modify the parameter bert_modelin train.yamlof the conffolder to the specify model. Users can choose different models to train by modifying the yamlfile.
Modify labels in train.yaml as the labels in data/type.txt
Train.
```
python run.py
```

Relation Extraction (RE)

If you need to use other models for training, follow the steps bellow:

1、Download the customized dataset and rename it to data.

2、Modify the parameter model_namein train.yamlof the conffolder to lm, num_relationsin embedding_yamlto the number of relations(eg: 51). Users can choose different models to train by modifying the yamlfile.

3、Train.

```bash
python run.py
```

FAQ

Q: How to use this model? A: It is off-the-shelf. After downloading the model, follow the instructions and you can extract the knowledge contained in the predefined cnSchema. If you want to extract knowledge other than cnSchema, you can use the advanced version of customized data for training

Q: Is there any other cnSchema extraction model available? A: Unfortunately, we can only support part of knowledge extraction of cnSchema for the time being. More knowledge extraction models will be published in the future.

Q: I trained better result than you! A: Congratulations!

Q: Embedding error for customized dataset. A: The Chinese data may contain invisible special characters, which cannot be encoded and thus an error is reported. You can preprocess the Chinese data through the editor or other tools to solve this problem.

Citation

If the resources or technologies in this project are helpful to your research work, you are welcome to cite the following papers in your thesis:

@inproceedings{DBLP:conf/emnlp/ZhangXTYYQXCLL22,
  author    = {Ningyu Zhang and
               Xin Xu and
               Liankuan Tao and
               Haiyang Yu and
               Hongbin Ye and
               Shuofei Qiao and
               Xin Xie and
               Xiang Chen and
               Zhoubo Li and
               Lei Li},
  editor    = {Wanxiang Che and
               Ekaterina Shutova},
  title     = {DeepKE: {A} Deep Learning Based Knowledge Extraction Toolkit for Knowledge
               Base Population},
  booktitle = {Proceedings of the The 2022 Conference on Empirical Methods in Natural
               Language Processing, {EMNLP} 2022 - System Demonstrations, Abu Dhabi,
               UAE, December 7-11, 2022},
  pages     = {98--108},
  publisher = {Association for Computational Linguistics},
  year      = {2022},
  url       = {https://aclanthology.org/2022.emnlp-demos.10},
  timestamp = {Thu, 23 Mar 2023 16:56:00 +0100},
  biburl    = {https://dblp.org/rec/conf/emnlp/ZhangXTYYQXCLL22.bib},
  bibsource = {dblp computer science bibliography, https://dblp.org}
}

Disclaimers

The contents of this project are only for technical research reference and shall not be used as any conclusive basis. Users can freely use the model within the scope of the license, but we are not responsible for the direct or indirect losses caused by the use of the project.

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README_CNSCHEMA.md

README_CNSCHEMA.md

Off-the-shelf Special Edition for Chinese Knowledge Extraction Toolkit——DeepKE-cnSchema

Catalogue

Introduction

Chinese Model Download

Instructions

Datasets and Chinese Baseline Performance

Datasets

Named Entity Recognition(NER)

Relation Extraction(RE)

Support Knowledge Schema Type

Entity Schema

Relation Schema

Quick Load

Named Entity Recognition(NER)

Relation Extraction(RE)

Joint Entity and Relation Extraction

Custom Models (Advanced Usage)

Named Entity Recognition (NER)

Relation Extraction (RE)

FAQ

Citation

Disclaimers

Problem Feedback

Files

README_CNSCHEMA.md

Latest commit

History

README_CNSCHEMA.md

File metadata and controls

Off-the-shelf Special Edition for Chinese Knowledge Extraction Toolkit——DeepKE-cnSchema

Catalogue

Introduction

Chinese Model Download

Instructions

Datasets and Chinese Baseline Performance

Datasets

Named Entity Recognition(NER)

Relation Extraction(RE)

Support Knowledge Schema Type

Entity Schema

Relation Schema

Quick Load

Named Entity Recognition(NER)

Relation Extraction(RE)

Joint Entity and Relation Extraction

Custom Models (Advanced Usage)

Named Entity Recognition (NER)

Relation Extraction (RE)

FAQ

Citation

Disclaimers

Problem Feedback