International Journal of Advances in Intelligent Informatics
Vol 12, No 2 (2026): May 2026

Automatic coloring of Ulos motif using large language model and non-dominated sorting differential evolution algorithm

Arlinta Barus (Institut Teknologi Del)
Humasak Simanjuntak (Institut Teknologi Del)
Samuel Indra Gunawan Situmeang (Institut Teknologi Del)
Robert Aritonang (Institut Teknologi Del)
Nicholas Hutabarat (Institut Teknologi Del)
Grase Panjaitan (Institut Teknologi Del)



Article Info

Publish Date
31 May 2026

Abstract

Ulos is a traditional Batak textile with high cultural significance, yet artisans lack tools to modernize designs while preserving heritage. Previous research primarily uses single-objective methods that fail to accommodate user preferences. This study introduces the first multi-objective framework for traditional textile coloring, differentiating itself by using a Large Language Model (LLM) as a natural language interface for non-technical weavers. The LLM translates user design preferences into dynamic objective functions to guide a Non-dominated Sorting Differential Evolution (NSDE) algorithm. Performance is assessed using the epsilon (ϵ) indicator, aesthetic metrics (contrast and colorfulness), and user preference scores. The system achieved high convergence with an ϵ-indicator value of 2.1788×10^(-3) and user preference scores reaching 0.66. Additionally, a paired t-test (p=0.07) demonstrated the algorithm's robustness across parameter variations. This approach enables artisans to create culturally authentic, aesthetically optimized designs through intuitive interaction.

Copyrights © 2026






Journal Info

Abbrev

IJAIN

Publisher

Subject

Computer Science & IT

Description

International journal of advances in intelligent informatics (IJAIN) e-ISSN: 2442-6571 is a peer reviewed open-access journal published three times a year in English-language, provides scientists and engineers throughout the world for the exchange and dissemination of theoretical and ...