/indolem

IndoLEM is a comprehensive Indonesian NLU benchmark, comprising three pillars NLP task: morpho-syntax, semantic, and discourse. Presented in COLING 2020.

Primary LanguagePython

🇮🇩 Welcome to IndoLEM and IndoBERT! 👋

Paper

Fajri Koto, Afshin, Rahimi, Jey Han Lau, and Timothy Baldwin. IndoLEM and IndoBERT: A Benchmark Dataset and Pre-trained Language Model for Indonesian NLP. In Proceedings of the 28th COLING, December 2020.

1. About IndoBERT

IndoBERT is the Indonesian version of BERT model. We train the model using over 220M words, aggregated from three main sources:

  • Indonesian Wikipedia (74M words)
  • news articles from Kompas, Tempo (Tala et al., 2003), and Liputan6 (55M words in total)
  • an Indonesian Web Corpus (Medved and Suchomel, 2017) (90M words).

We trained the model for 2.4M steps (180 epochs) with the final perplexity over the development set being 3.97 (similar to English BERT-base).

How to use

Load model and tokenizer (tested with transformers==3.5.1)

from transformers import AutoTokenizer, AutoModel
tokenizer = AutoTokenizer.from_pretrained("indolem/indobert-base-uncased")
model = AutoModel.from_pretrained("indolem/indobert-base-uncased")

2. About IndoLEM

IndoLEM (“Indonesian Language Evaluation Montage”) is a comprehensive Indonesian benchmark that comprises of seven tasks for the Indonesian language. This benchmark is categorized into three pillars of NLP tasks: morpho-syntax, semantics, and discourse.

We provide README file for each task. To find further information regarding each task, please click the related repository.

Experimental result over IndoLEM using mBERT, malayBERT and our IndoBERT:

Task Metric Bi-LSTM mBERT MalayBERT IndoBERT
POS Tagging Acc 95.4 96.8 96.8 96.8
NER UGM F1 70.9 71.6 73.2 74.9
NER UI F1 82.2 82.2 87.4 90.1
Dep. Parsing (GSD) UAS/LAS 85.25/80.35 86.85/81.78 86.99/81.87 87.12/82.32
Dep. Parsing (PUD) UAS/LAS 84.04/79.01 90.58/85.44 88.91/83.56 89.23/83.95
Sentiment Analysis F1 71.62 76.58 82.02 84.13
IndoSum R1/RL 67.96/67.24 68.40/67.67 68.44/67.71 69.93/69.21
Liputan6 (Sum) R1/RL 36.10/33.56 39.81/37.02 --/-- 41.08/38.01
Next Tweet Prediction Acc 73.6 92.4 93.1 93.7
Tweet Ordering Corr (ρ) 0.45 0.53 0.51 0.59