Unsupervised Language Model Pre-training for French

Overview

FlauBERT and FLUE

FlauBERT is a French BERT trained on a very large and heterogeneous French corpus. Models of different sizes are trained using the new CNRS (French National Centre for Scientific Research) Jean Zay supercomputer. This repository shares everything: pre-trained models (base and large), the data, the code to use the models and the code to train them if you need.

Along with FlauBERT comes FLUE: an evaluation setup for French NLP systems similar to the popular GLUE benchmark. The goal is to enable further reproducible experiments in the future and to share models and progress on the French language.

This repository is still under construction and everything will be available soon.

Table of Contents

1. FlauBERT models
2. Using FlauBERT
    2.1. Using FlauBERT with Hugging Face's Transformers
    2.2. Using FlauBERT with Facebook XLM's library
3. Pre-training FlauBERT
    3.1. Data
    3.2. Training
    3.3. Convert an XLM pre-trained model to Hugging Face's Transformers
4. Fine-tuning FlauBERT on the FLUE benchmark
5. Citation

1. FlauBERT models

FlauBERT is a French BERT trained on a very large and heterogeneous French corpus. Models of different sizes are trained using the new CNRS (French National Centre for Scientific Research) Jean Zay supercomputer. We have released the pretrained weights for the following model sizes.

The pretrained models are available for download from here or via Hugging Face's library.

Model name Number of layers Attention Heads Embedding Dimension Total Parameters
flaubert-small-cased 6 8 512 54 M
flaubert-base-uncased 12 12 768 137 M
flaubert-base-cased 12 12 768 138 M
flaubert-large-cased 24 16 1024 373 M

Note: flaubert-small-cased is partially trained so performance is not guaranteed. Consider using it for debugging purpose only.

We also provide the checkpoints from here for model base (cased/uncased) and large (cased).

2. Using FlauBERT

In this section, we describe two ways to obtain sentence embeddings from pretrained FlauBERT models: either via Hugging Face's Transformer library or via Facebook's XLM library. We will intergrate FlauBERT into Facebook' fairseq in the near future.

2.1. Using FlauBERT with Hugging Face's Transformers

You can use FlauBERT with Hugging Face's Transformers library as follow.

import torch
from transformers import FlaubertModel, FlaubertTokenizer

# Choose among ['flaubert/flaubert_small_cased', 'flaubert/flaubert_base_uncased', 
#               'flaubert/flaubert_base_cased', 'flaubert/flaubert_large_cased']
modelname = 'flaubert/flaubert_base_cased' 

# Load pretrained model and tokenizer
flaubert, log = FlaubertModel.from_pretrained(modelname, output_loading_info=True)
flaubert_tokenizer = FlaubertTokenizer.from_pretrained(modelname, do_lowercase=False)
# do_lowercase=False if using cased models, True if using uncased ones

sentence = "Le chat mange une pomme."
token_ids = torch.tensor([flaubert_tokenizer.encode(sentence)])

last_layer = flaubert(token_ids)[0]
print(last_layer.shape)
# torch.Size([1, 8, 768])  -> (batch size x number of tokens x embedding dimension)

# The BERT [CLS] token correspond to the first hidden state of the last layer
cls_embedding = last_layer[:, 0, :]

Notes: if your transformers version is <=2.10.0, modelname should take one of the following values:

['flaubert-small-cased', 'flaubert-base-uncased', 'flaubert-base-cased', 'flaubert-large-cased']

2.2. Using FlauBERT with Facebook XLM's library

The pretrained FlauBERT models are available for download from here. Each compressed folder includes 3 files:

  • *.pth: FlauBERT's pretrained model.
  • codes: BPE codes learned on the training data.
  • vocab: BPE vocabulary file.

Note: The following example only works for the modified XLM provided in this repo, it won't work for the original XLM. The code is taken from this tutorial.

import sys
import torch
import fastBPE

# Add Flaubert root to system path (change accordingly)
FLAUBERT_ROOT = '/home/user/Flaubert'
sys.path.append(FLAUBERT_ROOT)

from xlm.model.embedder import SentenceEmbedder
from xlm.data.dictionary import PAD_WORD


# Paths to model files
model_path = '/home/user/flaubert_base_cased/flaubert_base_cased_xlm.pth'
codes_path = '/home/user/flaubert_base_cased/codes'
vocab_path = '/home/user/flaubert_base_cased/vocab'
do_lowercase = False # Change this to True if you use uncased FlauBERT

bpe = fastBPE.fastBPE(codes_path, vocab_path)

sentences = "Le chat mange une pomme ."
if do_lowercase:
    sentences = sentences.lower()

# Apply BPE
sentences = bpe.apply([sentences])
sentences = [(('</s> %s </s>' % sent.strip()).split()) for sent in sentences]
print(sentences)

# Create batch
bs = len(sentences)
slen = max([len(sent) for sent in sentences])

# Reload pretrained model
embedder = SentenceEmbedder.reload(model_path)
embedder.eval()
dico = embedder.dico

# Prepare inputs to model
word_ids = torch.LongTensor(slen, bs).fill_(dico.index(PAD_WORD))
for i in range(len(sentences)):
    sent = torch.LongTensor([dico.index(w) for w in sentences[i]])
    word_ids[:len(sent), i] = sent
lengths = torch.LongTensor([len(sent) for sent in sentences])

# Get sentence embeddings (corresponding to the BERT [CLS] token)
cls_embedding = embedder.get_embeddings(x=word_ids, lengths=lengths)
print(cls_embedding.size())

# Get the entire output tensor for all tokens
# Note that cls_embedding = tensor[0]
tensor = embedder.get_embeddings(x=word_ids, lengths=lengths, all_tokens=True)
print(tensor.size())

3. Pre-training FlauBERT

Install dependencies

You should clone this repo and then install WikiExtractor, fastBPE and Moses tokenizer under tools:

git clone https://github.com/getalp/Flaubert.git
cd Flaubert

# Install toolkit
cd tools
git clone https://github.com/attardi/wikiextractor.git
git clone https://github.com/moses-smt/mosesdecoder.git

git clone https://github.com/glample/fastBPE.git
cd fastBPE
g++ -std=c++11 -pthread -O3 fastBPE/main.cc -IfastBPE -o fast

3.1. Data

In this section, we describe the pipeline to prepare the data for training FlauBERT. This is based on Facebook XLM's library. The steps are as follows:

  1. Download, clean, and tokenize data using Moses tokenizer.
  2. Split cleaned data into: train, validation, and test sets.
  3. Learn BPE on the training set. Then apply learned BPE codes to train, validation, and test sets.
  4. Binarize data.

(1) Download and Preprocess Data

In the following, replace $DATA_DIR, $corpus_name respectively with the path to the local directory to save the downloaded data and the name of the corpus that you want to download among the options specified in the scripts.

To download and preprocess the data, excecute the following commands:

./download.sh $DATA_DIR $corpus_name fr
./preprocess.sh $DATA_DIR $corpus_name fr

For example:

./download.sh ~/data gutenberg fr
./preprocess.sh ~/data gutenberg fr

The first command will download the raw data to $DATA_DIR/raw/fr_gutenberg, the second one processes them and save to $DATA_DIR/processed/fr_gutenberg.

(2) Split Data

Run the following command to split cleaned corpus into train, validation, and test sets. You can modify the train/validation/test ratio in the script.

bash tools/split_train_val_test.sh $DATA_PATH

where $DATA_PATH is path to the file to be split.

The output files are: fr.train, fr.valid, fr.test which are saved under the same directory as the original file.

(3) & (4) Learn BPE and Prepare Data

Run the following command to learn BPE codes on the training set, and apply BPE codes on the train, validation, and test sets. The data is then binarized and ready for training.

bash tools/create_pretraining_data.sh $DATA_DIR $BPE_size

where $DATA_DIR is path to the directory where the 3 above files fr.train, fr.valid, fr.test are saved. $BPE_size is the number of BPE vocabulary size, for example: 30 for 30k,50 for 50k, etc. The output files are saved in $DATA_DIR/BPE/30k or $DATA_DIR/BPE/50k correspondingly.

3.2. Training

Our codebase for pretraining FlauBERT is largely based on the XLM repo, with some modifications. You can use their code to train FlauBERT, it will work just fine.

Execute the following command to train FlauBERT (base) on your preprocessed data:

python train.py \
    --exp_name flaubert_base_cased \
    --dump_path $dump_path \
    --data_path $data_path \
    --amp 1 \
    --lgs 'fr' \
    --clm_steps '' \
    --mlm_steps 'fr' \
    --emb_dim 768 \
    --n_layers 12 \
    --n_heads 12 \
    --dropout 0.1 \
    --attention_dropout 0.1 \
    --gelu_activation true \
    --batch_size 16 \
    --bptt 512 \
    --optimizer "adam_inverse_sqrt,lr=0.0006,warmup_updates=24000,beta1=0.9,beta2=0.98,weight_decay=0.01,eps=0.000001" \
    --epoch_size 300000 \
    --max_epoch 100000 \
    --validation_metrics _valid_fr_mlm_ppl \
    --stopping_criterion _valid_fr_mlm_ppl,20 \
    --fp16 true \
    --accumulate_gradients 16 \
    --word_mask_keep_rand '0.8,0.1,0.1' \
    --word_pred '0.15'                      

where $dump_path is the path to where you want to save your pretrained model, $data_path is the path to the binarized data sets, for example $DATA_DIR/BPE/50k.

Run experiments on multiple GPUs and/or multiple nodes

To run experiments on multiple GPUs in a single machine, you can use the following command (the parameters after train.py are the same as above).

export NGPU=4
export CUDA_VISIBLE_DEVICES=0,1,2,3,4 # if you only use some of the GPUs in the machine
python -m torch.distributed.launch --nproc_per_node=$NGPU train.py

To run experiments on multiple nodes, multiple GPUs in clusters using SLURM as a resource manager, you can use the following command to launch training after requesting resources with #SBATCH (the parameters after train.py are the same as above plus --master_port parameter).

srun python train.py

3.3. Convert an XLM pre-trained model to Hugging Face's Transformers

To convert an XLM pre-trained model to Hugging Face's Transformers, you can use the following command.

python tools/use_flaubert_with_transformers/convert_to_transformers.py --inputdir $inputdir --outputdir $outputdir

where $inputdir is path to the XLM pretrained model directory, $outputdir is path to the output directory where you want to save the Hugging Face's Transformer model.

4. Fine-tuning FlauBERT on the FLUE benchmark

FLUE (French Language Understanding Evaludation) is a general benchmark for evaluating French NLP systems. Please refer to this page for an example of fine-tuning FlauBERT on this benchmark.

5. Video presentation

You can watch this 7mn video presentation of FlauBERT [VIDEO 7mn] (https://www.youtube.com/watch?v=NgLM9GuwSwc)

6. Citation

If you use FlauBERT or the FLUE Benchmark for your scientific publication, or if you find the resources in this repository useful, please cite one of the following papers:

LREC paper

@InProceedings{le2020flaubert,
  author    = {Le, Hang  and  Vial, Lo\"{i}c  and  Frej, Jibril  and  Segonne, Vincent  and  Coavoux, Maximin  and  Lecouteux, Benjamin  and  Allauzen, Alexandre  and  Crabb\'{e}, Beno\^{i}t  and  Besacier, Laurent  and  Schwab, Didier},
  title     = {FlauBERT: Unsupervised Language Model Pre-training for French},
  booktitle = {Proceedings of The 12th Language Resources and Evaluation Conference},
  month     = {May},
  year      = {2020},
  address   = {Marseille, France},
  publisher = {European Language Resources Association},
  pages     = {2479--2490},
  url       = {https://www.aclweb.org/anthology/2020.lrec-1.302}
}

TALN paper

@inproceedings{le2020flaubert,
  title         = {FlauBERT: des mod{\`e}les de langue contextualis{\'e}s pr{\'e}-entra{\^\i}n{\'e}s pour le fran{\c{c}}ais},
  author        = {Le, Hang and Vial, Lo{\"\i}c and Frej, Jibril and Segonne, Vincent and Coavoux, Maximin and Lecouteux, Benjamin and Allauzen, Alexandre and Crabb{\'e}, Beno{\^\i}t and Besacier, Laurent and Schwab, Didier},
  booktitle     = {Actes de la 6e conf{\'e}rence conjointe Journ{\'e}es d'{\'E}tudes sur la Parole (JEP, 31e {\'e}dition), Traitement Automatique des Langues Naturelles (TALN, 27e {\'e}dition), Rencontre des {\'E}tudiants Chercheurs en Informatique pour le Traitement Automatique des Langues (R{\'E}CITAL, 22e {\'e}dition). Volume 2: Traitement Automatique des Langues Naturelles},
  pages         = {268--278},
  year          = {2020},
  organization  = {ATALA}
}
Owner
GETALP
Study Group for Machine Translation and Automated Processing of Languages and Speech
GETALP
Khandakar Muhtasim Ferdous Ruhan 1 Dec 30, 2021
A natural language modeling framework based on PyTorch

Overview PyText is a deep-learning based NLP modeling framework built on PyTorch. PyText addresses the often-conflicting requirements of enabling rapi

Meta Research 6.4k Jan 08, 2023
BARTpho: Pre-trained Sequence-to-Sequence Models for Vietnamese

Table of contents Introduction Using BARTpho with fairseq Using BARTpho with transformers Notes BARTpho: Pre-trained Sequence-to-Sequence Models for V

VinAI Research 58 Dec 23, 2022
Shirt Bot is a discord bot which uses GPT-3 to generate text

SHIRT BOT · Shirt Bot is a discord bot which uses GPT-3 to generate text. Made by Cyclcrclicly#3420 (474183744685604865) on Discord. Support Server EX

31 Oct 31, 2022
Transformers4Rec is a flexible and efficient library for sequential and session-based recommendation, available for both PyTorch and Tensorflow.

Transformers4Rec is a flexible and efficient library for sequential and session-based recommendation, available for both PyTorch and Tensorflow.

730 Jan 09, 2023
Code for PED: DETR For (Crowd) Pedestrian Detection

Code for PED: DETR For (Crowd) Pedestrian Detection

36 Sep 13, 2022
Binary LSTM model for text classification

Text Classification The purpose of this repository is to create a neural network model of NLP with deep learning for binary classification of texts re

Nikita Elenberger 1 Mar 11, 2022
Estimation of the CEFR complexity score of a given word, sentence or text.

NLP-Swedish … allows to estimate CEFR (Common European Framework of References) complexity score of a given word, sentence or text. CEFR scores come f

3 Apr 30, 2022
Clone a voice in 5 seconds to generate arbitrary speech in real-time

This repository is forked from Real-Time-Voice-Cloning which only support English. English | 中文 Features 🌍 Chinese supported mandarin and tested with

Weijia Chen 25.6k Jan 06, 2023
NLP library designed for reproducible experimentation management

Welcome to the Transfer NLP library, a framework built on top of PyTorch to promote reproducible experimentation and Transfer Learning in NLP You can

Feedly 290 Dec 20, 2022
The code from the whylogs workshop in DataTalks.Club on 29 March 2022

whylogs Workshop The code from the whylogs workshop in DataTalks.Club on 29 March 2022 whylogs - The open source standard for data logging (Don't forg

DataTalksClub 12 Sep 05, 2022
**NSFW** A chatbot based on GPT2-chitchat

DangBot -- 好怪哦,再来一句 卡群怪话bot,powered by GPT2 for Chinese chitchat Training Example: python train.py --lr 5e-2 --epochs 30 --max_len 300 --batch_size 8

Tommy Yang 11 Jul 21, 2022
A BERT-based reverse-dictionary of Korean proverbs

Wisdomify A BERT-based reverse-dictionary of Korean proverbs. 김유빈 : 모델링 / 데이터 수집 / 프로젝트 설계 / back-end 김종윤 : 데이터 수집 / 프로젝트 설계 / front-end Quick Start C

Eu-Bin KIM 94 Dec 08, 2022
:house_with_garden: Fast & easy transfer learning for NLP. Harvesting language models for the industry. Focus on Question Answering.

(Framework for Adapting Representation Models) What is it? FARM makes Transfer Learning with BERT & Co simple, fast and enterprise-ready. It's built u

deepset 1.6k Dec 27, 2022
Accurately generate all possible forms of an English word e.g "election" --> "elect", "electoral", "electorate" etc.

Accurately generate all possible forms of an English word Word forms can accurately generate all possible forms of an English word. It can conjugate v

Dibya Chakravorty 570 Dec 31, 2022
(ACL 2022) The source code for the paper "Towards Abstractive Grounded Summarization of Podcast Transcripts"

Towards Abstractive Grounded Summarization of Podcast Transcripts We provide the source code for the paper "Towards Abstractive Grounded Summarization

10 Jul 01, 2022
jiant is an NLP toolkit

🚨 Update 🚨 : As of 2021/10/17, the jiant project is no longer being actively maintained. This means there will be no plans to add new models, tasks,

ML² AT CILVR 1.5k Dec 28, 2022
Code for EmBERT, a transformer model for embodied, language-guided visual task completion.

Code for EmBERT, a transformer model for embodied, language-guided visual task completion.

41 Jan 03, 2023
This is a project of data parallel that running on NLP tasks.

This is a project of data parallel that running on NLP tasks.

2 Dec 12, 2021
This github repo is for Neurips 2021 paper, NORESQA A Framework for Speech Quality Assessment using Non-Matching References.

NORESQA: Speech Quality Assessment using Non-Matching References This is a Pytorch implementation for using NORESQA. It contains minimal code to predi

Meta Research 36 Dec 08, 2022