Teknika
Vol. 14 No. 2 (2025): July 2025

Chatbot Application “Konco Ngobrol” in Ngapak Javanese Using LSTM Model Approach

Salman Baehaqi (Department of Informatics Engineering, Faculty of Engineering and Science, Muhammadiyah University of Purwokerto, Banyumas, Central Java, Indonesia)
Hindayati Mustafidah (Department of Informatics Engineering, Faculty of Engineering and Science, Muhammadiyah University of Purwokerto, Banyumas, Central Java, Indonesia)
Maulida Ayu Fitriani (Department of Informatics Engineering, Faculty of Engineering and Science, Muhammadiyah University of Purwokerto, Banyumas, Central Java, Indonesia)
Agung Purwo Wicaksono (Department of Informatics Engineering, Faculty of Engineering and Science, Muhammadiyah University of Purwokerto, Banyumas, Central Java, Indonesia)



Article Info

Publish Date
01 Jul 2025

Abstract

Regional languages are an important part of cultural identity, increasingly marginalized in the digital era. Ngapak Javanese, a local dialect, is declining in use in Banyumas, Tegal, Purbalingga, and nearby areas. This research aims to develop an interactive text-based chatbot named Konco Ngobrol that uses Ngapak Javanese as the main conversational language. This chatbot is built using the Long Short-Term Memory (LSTM) model approach, which excels at understanding conversation context in the form of sequential data. The dataset is composed of many sentence patterns with a mixed language style of Indonesian and Javanese Ngapak. The research stages include data collection, pre-processing (tokenization, padding, and label encoding), building and training the LSTM model, model evaluation, prediction using a combination of LSTM and fuzzy matching, and deployment into a Flask-based application with an interactive chat interface. The evaluation results show that the LSTM model can achieve an accuracy of up to 99.04% with a low loss value, and can provide contextually appropriate responses. The fallback system also successfully handled unknown inputs well through fuzzy logic. The Konco Ngobrol chatbot not only serves as a medium for entertainment and communication but also as a tool for preserving digital culture by reintroducing local dialects into the modern technology ecosystem.

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Journal Info

Abbrev

teknika

Publisher

Subject

Computer Science & IT Electrical & Electronics Engineering Engineering

Description

Teknika is a peer-reviewed journal dedicated to disseminate research articles in Information and Communication Technology (ICT) area. Researchers, lecturers, students, or practitioners are welcomed to submit paper which has topic below: Computer Networks Computer Security Artificial Intelligence ...