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T-NER
An All-Round Python Library for Transformer-based
Named Entity Recognition
Asahi Ushio
Jose Camacho-Collados
Cardiff University
School of Computer Science and Informatics
Presented at EACL 2021
https://github.com/asahi417/tner
https://pypi.org/project/tner
Language Model Pretraining & Finetuning
T-NER: An All-Round Python Library for Transformer-based Named Entity Recognition
Asahi Ushio and Jose Camacho-Collados
BERT: Pre-training of Deep Bidirectional Transformers for Language Understanding (Devlin, Jacob, et al., 2018)
Exploring the Limits of Transfer Learning with a Unified Text-to-Text Transformer (Raffel, Colin, et al. 2020)
Improving language understanding by generative
pre-training (Radford, Alec, et al., 2018)
2
Named Entity Recognition
T-NER: An All-Round Python Library for Transformer-based Named Entity Recognition
Asahi Ushio and Jose Camacho-Collados
Jacob Collier is an English artist.
Person Location
3
Named Entity Recognition
T-NER: An All-Round Python Library for Transformer-based Named Entity Recognition
Asahi Ushio and Jose Camacho-Collados
Jacob Collier is an English artist.
4
Named Entity Recognition
T-NER: An All-Round Python Library for Transformer-based Named Entity Recognition
Asahi Ushio and Jose Camacho-Collados
Jacob Collier is an English artist.
Jacob is English
an artist.
Collier
Tokenization
5
Named Entity Recognition
T-NER: An All-Round Python Library for Transformer-based Named Entity Recognition
Asahi Ushio and Jose Camacho-Collados
Jacob Collier is an English artist.
BERT + Linear Projection
Jacob is English
an artist.
PJacob PCollier Pan PEnglish Partist
Pis
Collier
Tokenization
Location
Person
6
Implement NER System
T-NER: An All-Round Python Library for Transformer-based Named Entity Recognition
Asahi Ushio and Jose Camacho-Collados
Unify Tagging Scheme
- IOB, IOB2, IOBES, etc
Jean Auguste Dominique Ingres
B-Person I-Person I-Person I-Person
Jean Auguste Dominique Ingres
Person
B-Person I-Person I-Person E-Person
IOBES
IOB
7
Implement NER System
T-NER: An All-Round Python Library for Transformer-based Named Entity Recognition
Asahi Ushio and Jose Camacho-Collados
Unify Tagging Scheme
- IOB, IOB2, IOBES, etc
Fix Sequence Mismatch
- Algine label sequence to
model tokenization
Jean Auguste Dominique Ingres was a French painter.
B-Person I-Person I-Person I-Person
Jean August e Dominique Ingres was a French painter.
B-Location
Dataset
RoBERTa Tokenization
B-Person I-Person
I-Person
I-Person
I-Person
I-Person
I-Person
B-Location
Jean Auguste Dominique Ingres
Jean Auguste Dominique Ingres
Person
B-Person I-Person I-Person I-Person
B-Person I-Person I-Person E-Person
IOBES
IOB
8
T-NER: An All-Round Python Library for Transformer-based Named Entity Recognition
Asahi Ushio and Jose Camacho-Collados
Unify Tagging Scheme
- IOB, IOB2, IOBES, etc
Fix Sequence Mismatch
- Algine label sequence to
model tokenization
Jean Auguste Dominique Ingres was a French painter.
B-Person I-Person I-Person I-Person
Jean August e Dominique Ingres was a French painter.
B-Location
Dataset
B-Person I-Person
I-Person
I-Person
I-Person
I-Person
I-Person
B-Location
Jean Auguste Dominique Ingres
Jean Auguste Dominique Ingres
Person
Evaluate in Cross-domain
- Dataset specific entity
definition
BioNLP2004
● Protein
● Cell type
● RNA
WNUT2017
● Person
● Corporation
● Creative work
Implement NER System
B-Person I-Person I-Person I-Person
B-Person I-Person I-Person E-Person
IOBES
IOB
RoBERTa Tokenization
9
NLP Open Source Softwares
T-NER: An All-Round Python Library for Transformer-based Named Entity Recognition
Asahi Ushio and Jose Camacho-Collados
10
T-NER🌳
Overall T-NER Design
T-NER: An All-Round Python Library for Transformer-based Named Entity Recognition
Asahi Ushio and Jose Camacho-Collados
LM finetuning
OntoNotes 5
CoNLL 2003
BioNLP 2004
WNUT 2017
WikiAnn
...
Datasets
NER model
web APP
LM evaluation
*cross-domain
*cross-lingual
46 finetuned NER models released in model
hub !!
● IOB format
● Sequence
mismatch fixed
Upload/download
model
Notebook link
● Finetuning
● Evaluation
● Model prediction
● Multilingual NER
12
Web Application
T-NER: An All-Round Python Library for Transformer-based Named Entity Recognition
Asahi Ushio and Jose Camacho-Collados
# SETUP
>>> git clone https://github.com/asahi417/tner
>>> cd tner
>>> pip install .
# RUN APPLICATION at http://0.0.0.0:8000/
>>> export NER_MODEL=’asahi417/tner-xlm-roberta-large-ontonotes5’
>>> uvicorn app:app --reload --log-level debug --host 0.0.0.0 --port 8000
13
T-NER: An All-Round Python Library for Transformer-based Named Entity Recognition
Asahi Ushio and Jose Camacho-Collados
14
Experimental Results
T-NER: An All-Round Python Library for Transformer-based Named Entity Recognition
Asahi Ushio and Jose Camacho-Collados
15
🌳Thank you!🌳

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2021-04, EACL, T-NER: An All-Round Python Library for Transformer-based Named Entity Recognition

  • 1. T-NER An All-Round Python Library for Transformer-based Named Entity Recognition Asahi Ushio Jose Camacho-Collados Cardiff University School of Computer Science and Informatics Presented at EACL 2021 https://github.com/asahi417/tner https://pypi.org/project/tner
  • 2. Language Model Pretraining & Finetuning T-NER: An All-Round Python Library for Transformer-based Named Entity Recognition Asahi Ushio and Jose Camacho-Collados BERT: Pre-training of Deep Bidirectional Transformers for Language Understanding (Devlin, Jacob, et al., 2018) Exploring the Limits of Transfer Learning with a Unified Text-to-Text Transformer (Raffel, Colin, et al. 2020) Improving language understanding by generative pre-training (Radford, Alec, et al., 2018) 2
  • 3. Named Entity Recognition T-NER: An All-Round Python Library for Transformer-based Named Entity Recognition Asahi Ushio and Jose Camacho-Collados Jacob Collier is an English artist. Person Location 3
  • 4. Named Entity Recognition T-NER: An All-Round Python Library for Transformer-based Named Entity Recognition Asahi Ushio and Jose Camacho-Collados Jacob Collier is an English artist. 4
  • 5. Named Entity Recognition T-NER: An All-Round Python Library for Transformer-based Named Entity Recognition Asahi Ushio and Jose Camacho-Collados Jacob Collier is an English artist. Jacob is English an artist. Collier Tokenization 5
  • 6. Named Entity Recognition T-NER: An All-Round Python Library for Transformer-based Named Entity Recognition Asahi Ushio and Jose Camacho-Collados Jacob Collier is an English artist. BERT + Linear Projection Jacob is English an artist. PJacob PCollier Pan PEnglish Partist Pis Collier Tokenization Location Person 6
  • 7. Implement NER System T-NER: An All-Round Python Library for Transformer-based Named Entity Recognition Asahi Ushio and Jose Camacho-Collados Unify Tagging Scheme - IOB, IOB2, IOBES, etc Jean Auguste Dominique Ingres B-Person I-Person I-Person I-Person Jean Auguste Dominique Ingres Person B-Person I-Person I-Person E-Person IOBES IOB 7
  • 8. Implement NER System T-NER: An All-Round Python Library for Transformer-based Named Entity Recognition Asahi Ushio and Jose Camacho-Collados Unify Tagging Scheme - IOB, IOB2, IOBES, etc Fix Sequence Mismatch - Algine label sequence to model tokenization Jean Auguste Dominique Ingres was a French painter. B-Person I-Person I-Person I-Person Jean August e Dominique Ingres was a French painter. B-Location Dataset RoBERTa Tokenization B-Person I-Person I-Person I-Person I-Person I-Person I-Person B-Location Jean Auguste Dominique Ingres Jean Auguste Dominique Ingres Person B-Person I-Person I-Person I-Person B-Person I-Person I-Person E-Person IOBES IOB 8
  • 9. T-NER: An All-Round Python Library for Transformer-based Named Entity Recognition Asahi Ushio and Jose Camacho-Collados Unify Tagging Scheme - IOB, IOB2, IOBES, etc Fix Sequence Mismatch - Algine label sequence to model tokenization Jean Auguste Dominique Ingres was a French painter. B-Person I-Person I-Person I-Person Jean August e Dominique Ingres was a French painter. B-Location Dataset B-Person I-Person I-Person I-Person I-Person I-Person I-Person B-Location Jean Auguste Dominique Ingres Jean Auguste Dominique Ingres Person Evaluate in Cross-domain - Dataset specific entity definition BioNLP2004 ● Protein ● Cell type ● RNA WNUT2017 ● Person ● Corporation ● Creative work Implement NER System B-Person I-Person I-Person I-Person B-Person I-Person I-Person E-Person IOBES IOB RoBERTa Tokenization 9
  • 10. NLP Open Source Softwares T-NER: An All-Round Python Library for Transformer-based Named Entity Recognition Asahi Ushio and Jose Camacho-Collados 10
  • 12. Overall T-NER Design T-NER: An All-Round Python Library for Transformer-based Named Entity Recognition Asahi Ushio and Jose Camacho-Collados LM finetuning OntoNotes 5 CoNLL 2003 BioNLP 2004 WNUT 2017 WikiAnn ... Datasets NER model web APP LM evaluation *cross-domain *cross-lingual 46 finetuned NER models released in model hub !! ● IOB format ● Sequence mismatch fixed Upload/download model Notebook link ● Finetuning ● Evaluation ● Model prediction ● Multilingual NER 12
  • 13. Web Application T-NER: An All-Round Python Library for Transformer-based Named Entity Recognition Asahi Ushio and Jose Camacho-Collados # SETUP >>> git clone https://github.com/asahi417/tner >>> cd tner >>> pip install . # RUN APPLICATION at http://0.0.0.0:8000/ >>> export NER_MODEL=’asahi417/tner-xlm-roberta-large-ontonotes5’ >>> uvicorn app:app --reload --log-level debug --host 0.0.0.0 --port 8000 13
  • 14. T-NER: An All-Round Python Library for Transformer-based Named Entity Recognition Asahi Ushio and Jose Camacho-Collados 14
  • 15. Experimental Results T-NER: An All-Round Python Library for Transformer-based Named Entity Recognition Asahi Ushio and Jose Camacho-Collados 15