Publications

Welcome to our research publications page. Here you can find our latest research papers, technical reports, and academic contributions in the field of AI and Natural Language Processing.

Recent Publications

2025

OpenThaiGPT 1.6 and R1: Thai-Centric Open Source and Reasoning Large Language Models

Authors: Sumeth Yuenyong, Thodsaporn Chay-intr, Kobkrit Viriyayudhakorn

Published in: arXiv preprint

Abstract: We present OpenThaiGPT 1.6 and R1 (OTG-1.6 and OTG-R1), Thai-centric Large Language Models (LLMs) developed through distinct methodologies to enhance generalization and reasoning capabilities.

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LLaVAC: Fine-tuning LLaVA as a Multimodal Sentiment Classifier

Authors: T. Chay-intr, Y. Chen, K. Viriyayudhakorn, T. Theeramunkong

Published in: arXiv preprint

Abstract: We present LLaVAC, a method for constructing a classifier for multimodal sentiment analysis. This method leverages fine-tuning of the Large Language and Vision Assistant (LLaVA) to predict sentiment labels across both image and text modalities.

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2024

OpenThaiGPT 1.5: Technical Report

Authors: Sumeth Yuenyong, Kobkrit Viriyayudhakorn, Apivadee Piyatumrong, Jillaphat Jaroenkantasima

Published in: Lecture Notes in Computer Science (LNCS, Volume 15837)

Conference: International Conference on Applications of Natural Language to Information Systems (NLDB 2024)

Abstract: OpenThaiGPT 1.5 is an advanced Thai language chat model based on Qwen v2.5, finetuned on over 2,000,000 Thai instruction pairs. This report provides an engineering perspective on the model's development, capabilities, and performance.

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Research Areas

🧠 Natural Language Processing (NLP)

Thai language modeling
Text generation and understanding
Sentiment analysis

👁️ Computer Vision

Face recognition
Document OCR
Object detection

🎤 Speech Technology

Speech-to-text
Text-to-speech
Voice synthesis

Collaborations

We actively collaborate with leading universities and research institutions in Thailand and internationally. If you're interested in research collaboration, please contact us.