This model is the BanglaSTEM translation model, presented in the paper BanglaSTEM: A Parallel Corpus and Term-Weighted Evaluation for Technical Bangla-English Translation.

The model is a T5-based translation model specifically trained on the BanglaSTEM dataset, which consists of 5,000 carefully selected Bangla-English sentence pairs from STEM fields. It aims to improve translation accuracy for technical content, enabling Bangla speakers to effectively use English-focused language models for technical problem-solving.

BanglaSTEM-T5: Technical Domain Translation Model

Overview

BanglaSTEM-T5 is a specialized translation model designed to accurately translate technical content between Bangla and English. Unlike general-purpose translation systems that struggle with technical terminology, this model preserves the precise meaning of STEM concepts, making it ideal for:

• Programming & Software Development - Translate code-related questions and documentation
• Mathematics - Handle mathematical concepts and problem statements
• Science - Accurately translate physics, chemistry, and biology content
• AI & Machine Learning - Work with technical AI/ML terminology

Performance Benchmarks

Our model significantly outperforms existing translation systems on technical content:

Code Generation Task (400 Programming Problems)

Translation Method	Accuracy
Direct Bangla (no translation)	35.3%
BanglaT5-Base	59.8%
Google Translate	76.5%
BanglaSTEM-T5 (Ours)	82.5%

Mathematical Problem Solving (100 Olympiad Problems)

Translation Method	Success Rate
Direct Bangla (no translation)	31.0%
BanglaT5-Base	59.0%
Google Translate	72.0%
BanglaSTEM-T5 (Ours)	79.0%

Key Improvement: Our model achieves 22.7% higher accuracy than base models on code generation and 20% better on math problems.

Quick Start

Installation

pip install transformers torch

Basic Usage

from transformers import AutoTokenizer, AutoModelForSeq2SeqLM

# Load model and tokenizer
tokenizer = AutoTokenizer.from_pretrained("reyazul/BanglaSTEM-T5")
model = AutoModelForSeq2SeqLM.from_pretrained("reyazul/BanglaSTEM-T5")

# Translate Bangla to English
bangla_text = "একটি পাইথন ফাংশন লিখুন যা একটি তালিকার সর্বোচ্চ মান খুঁজে বের করে।"
inputs = tokenizer(bangla_text, return_tensors="pt", padding=True)
outputs = model.generate(**inputs, max_length=128, num_beams=4)
english_translation = tokenizer.decode(outputs[0], skip_special_tokens=True)

print(english_translation)
# Output: "Write a Python function that finds the maximum value in a list."

Custom Generation Parameters

# For more accurate translations
outputs = model.generate(
    **inputs,
    max_length=256,
    num_beams=5,
    early_stopping=True,
    temperature=0.7,
    do_sample=False
)

Model Details

• Base Model: csebuetnlp/banglat5_nmt_en_bn
• Parameters: 247M
• Training Data: 5,000 high-quality technical sentence pairs
• Domains Covered:
  • Programming (52%)
  • Mathematics (25.5%)
  • Information Technology (23.7%)
  • Physics (9.8%)
  • Chemistry (7.3%)
  • Biology & Bioinformatics (5.6%)
• Quality Score: Mean translation accuracy of 4.41/5.0
• Training Details:
  • Learning rate: 5e-4
  • Batch size: 64 (effective)
  • Epochs: 8
  • Precision: BF16 mixed precision

Citation

If you use BanglaSTEM-T5 in your research or applications, please cite our paper:

@inproceedings{hasan2026banglastem,
  title={BanglaSTEM: A Parallel Corpus and Term-Weighted Evaluation for Technical Bangla-English Translation},
  author={Hasan, Kazi Reyazul and Al Islam, ABM Alim and Adnan, Muhammad Abdullah},
  booktitle={Proceedings of the 64th Annual Meeting of the Association for Computational Linguistics (ACL 2026)},
  pages={403--412},
  year={2026}
}

Resources

• Paper: BanglaSTEM: A Parallel Corpus and Term-Weighted Evaluation for Technical Bangla-English Translation
• Dataset: reyazul/BanglaSTEM
• Model Card: reyazul/BanglaSTEM-T5

Limitations

• The dataset used for finetuning is currently not large-scale (we plan to expand it soon!)
• The model works best with technical content in STEM domains
• Performance on non-technical, general conversation may be similar to base models
• Programming domain is most heavily represented in training data
• For optimal results, input text should be grammatically correct

License

This model is released under the Apache 2.0 License. See the LICENSE for details.

Acknowledgments

This work was supported by the Department of Computer Science and Engineering at Bangladesh University of Engineering and Technology (BUET). We thank all annotators who contributed to the human curation process.

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