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
null

CP-Cluster Confidence Propagation Cluster aims to replace NMS-based methods as a better box fusion framework in 2D/3D Object detection, Instance Segme

Yichun Shen 41 Dec 08, 2022
Chinese version of GPT2 training code, using BERT tokenizer.

GPT2-Chinese Description Chinese version of GPT2 training code, using BERT tokenizer or BPE tokenizer. It is based on the extremely awesome repository

Zeyao Du 5.6k Jan 04, 2023
NewsMTSC: (Multi-)Target-dependent Sentiment Classification in News Articles

NewsMTSC: (Multi-)Target-dependent Sentiment Classification in News Articles NewsMTSC is a dataset for target-dependent sentiment classification (TSC)

Felix Hamborg 79 Dec 30, 2022
Trains an OpenNMT PyTorch model and SentencePiece tokenizer.

Trains an OpenNMT PyTorch model and SentencePiece tokenizer. Designed for use with Argos Translate and LibreTranslate.

Argos Open Tech 61 Dec 13, 2022
Transformer Based Korean Sentence Spacing Corrector

TKOrrector Transformer Based Korean Sentence Spacing Corrector License Summary This solution is made available under Apache 2 license. See the LICENSE

Paul Hyung Yuel Kim 3 Apr 18, 2022
Code for the ACL 2021 paper "Structural Guidance for Transformer Language Models"

Structural Guidance for Transformer Language Models This repository accompanies the paper, Structural Guidance for Transformer Language Models, publis

International Business Machines 10 Dec 14, 2022
NLP - Machine learning

Flipkart-product-reviews NLP - Machine learning About Product reviews is an essential part of an online store like Flipkart’s branding and marketing.

Harshith VH 1 Oct 29, 2021
ADCS cert template modification and ACL enumeration

Purpose This tool is designed to aid an operator in modifying ADCS certificate templates so that a created vulnerable state can be leveraged for privi

Fortalice Solutions, LLC 78 Dec 12, 2022
PIZZA - a task-oriented semantic parsing dataset

The PIZZA dataset continues the exploration of task-oriented parsing by introducing a new dataset for parsing pizza and drink orders, whose semantics cannot be captured by flat slots and intents.

17 Dec 14, 2022
NLP topic mdel LDA - Gathered from New York Times website

NLP topic mdel LDA - Gathered from New York Times website

1 Oct 14, 2021
Mapping a variable-length sentence to a fixed-length vector using BERT model

Are you looking for X-as-service? Try the Cloud-Native Neural Search Framework for Any Kind of Data bert-as-service Using BERT model as a sentence enc

Han Xiao 11.1k Jan 01, 2023
Training open neural machine translation models

Train Opus-MT models This package includes scripts for training NMT models using MarianNMT and OPUS data for OPUS-MT. More details are given in the Ma

Language Technology at the University of Helsinki 167 Jan 03, 2023
The (extremely) naive sentiment classification function based on NBSVM trained on wisesight_sentiment

thai_sentiment The naive sentiment classification function based on NBSVM trained on wisesight_sentiment วิธีติดตั้ง pip install thai_sentiment==0.1.3

Charin 7 Dec 08, 2022
pkuseg多领域中文分词工具; The pkuseg toolkit for multi-domain Chinese word segmentation

pkuseg:一个多领域中文分词工具包 (English Version) pkuseg 是基于论文[Luo et. al, 2019]的工具包。其简单易用,支持细分领域分词,有效提升了分词准确度。 目录 主要亮点 编译和安装 各类分词工具包的性能对比 使用方式 论文引用 作者 常见问题及解答 主要

LancoPKU 6k Dec 29, 2022
Build Text Rerankers with Deep Language Models

Reranker is a lightweight, effective and efficient package for training and deploying deep languge model reranker in information retrieval (IR), question answering (QA) and many other natural languag

Luyu Gao 140 Dec 06, 2022
Code for CVPR 2021 paper: Revamping Cross-Modal Recipe Retrieval with Hierarchical Transformers and Self-supervised Learning

Revamping Cross-Modal Recipe Retrieval with Hierarchical Transformers and Self-supervised Learning This is the PyTorch companion code for the paper: A

Amazon 69 Jan 03, 2023
This is a really simple text-to-speech app made with python and tkinter.

Tkinter Text-to-Speech App by Souvik Roy This is a really simple tkinter app which converts the text you have entered into a speech. It is created wit

Souvik Roy 1 Dec 21, 2021
Turkish Stop Words Türkçe Dolgu Sözcükleri

trstop Turkish Stop Words Türkçe Dolgu Sözcükleri In this repository I put Turkish stop words that is contained in the first 10 thousand words with th

Ahmet Aksoy 103 Nov 12, 2022
Simple, Fast, Powerful and Easily extensible python package for extracting patterns from text, with over than 60 predefined Regular Expressions.

patterns-finder Simple, Fast, Powerful and Easily extensible python package for extracting patterns from text, with over than 60 predefined Regular Ex

22 Dec 19, 2022