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All Journal Jurnal Ilmiah Kursor Knowledge Engineering and Data Science Indonesian Journal of Data and Science Innovation in Research of Informatics (INNOVATICS) Jurnal Pengabdian Masyarakat Bangsa
Admojo, Fadhila Tangguh
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Journal : Knowledge Engineering and Data Science

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Systematic Literature Review on Ontology-based Indonesian Question Answering System Admojo, Fadhila Tangguh; Lajis, Adidah; Nasir, Haidawati
Knowledge Engineering and Data Science Vol 6, No 2 (2023)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um018v6i22023p129-144

Abstract

Question-Answering (QA) systems at the intersection of natural language processing, information retrieval, and knowledge representation aim to provide efficient responses to natural language queries. These systems have seen extensive development in English and languages like Indonesian present unique challenges and opportunities. This literature review paper delves into the state of ontology-based Indonesian QA systems, highlighting critical challenges. The first challenge lies in sentence understanding, variations, and complexity. Most systems rely on syntactic analysis and struggle to grasp sentence semantics. Complex sentences, especially in Indonesian, pose difficulties in parsing, semantic interpretation, and knowledge extraction. Addressing these linguistic intricacies is pivotal for accurate responses. Secondly, template-based SPARQL query construction, commonly used in Indonesian QA systems, suffers from semantic gaps and inflexibility. Advanced techniques like semantic matching algorithms and dynamic template generation can bridge these gaps and adapt to evolving ontologies. Thirdly, lexical gaps and ambiguity hinder QA systems. Bridging vocabulary mismatches between user queries and ontology labels remains a challenge. Strategies like synonym expansion, word embedding, and ontology enrichment must be explored further to overcome these challenges. Lastly, the review discusses the potential of developing multi-domain ontologies to broaden the knowledge coverage of QA systems. While this presents complex linguistic and ontological challenges, it offers the advantage of responding to various user queries across various domains. This literature review identifies crucial challenges in developing ontology-based Indonesian QA systems and suggests innovative approaches to address these challenges.
Optimal Strategy for Handling Unbalanced Medical Datasets: Performance Evaluation of K-NN Algorithm Using Sampling Techniques Salim, Yulita; Utami, Aulia Putri; Manga’, Abdul Rachman; Aziz, Huzain; Admojo, Fadhila Tangguh
Knowledge Engineering and Data Science Vol 7, No 2 (2024)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um018v7i22024p176-186

Abstract

This study addresses the critical role of medical image classification in enhancing healthcare effectiveness and tackling the challenges of imbalanced medical datasets. It focuses on optimizing classification performance by integrating Canny edge detection for segmentation and Hu-moment feature extraction and applying oversampling and undersampling techniques. Five diverse medical datasets were utilized, covering Alzheimer’s and Parkinson’s diseases, COVID-19, brain tumours, and lung cancer. The K-Nearest Neighbors (K-NN) algorithm was implemented to enhance classification accuracy, aiming to develop a more robust framework for medical image analysis. The evaluation, conducted using cross-validation, demonstrated notable improvements in key metrics. Specifically, oversampling significantly enhanced lung cancer detection accuracy, while undersampling contributed to balanced performance gains in the COVID-19 class. Metrics, including accuracy, precision, recall, and F1-score, provided insights into the model’s effectiveness. These findings highlight the positive impact of data balancing techniques on K-NN performance in imbalanced medical image classification. Continued research is essential to refine these techniques and improve medical diagnostics.
Co-Authors Achmad Jauhari, Achmad Ahsanawati Aziz, Huzain Devie Rosa Anamisa Fahmi Ajismanto Guntoro Barovih, Guntoro Hamada Zein Huzain Azis Ika Oktavia Suzanti Jabir, Siti Rahma Lajis, Adidah Manga’, Abdul Rachman Mualfah, Desti Muhammad Innuddin Nasir, Haidawati Naswin, Ahmad Nurul Rismayanti Radhitya, Made Leo Rezania Agramanisti Azdy, Rezania Agramanisti Salim, Yulita Saputri, Nurul Adha Oktarini Slamet Risnanto Syafie, Lukman Utami, Aulia Putri Windiawati, Ai Wulan Yudha Islami Sulistya