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Analysis of Junior High School Students’ Mathematical Literacy Processes (Formulating, Employing, and Interpreting) in PISA Space and Shape Abirrotun Nabilah; Mauliddiyah Istiqomah; Hendri Handoko
Noumerico: Journal of Technology in Mathematics Education Vol. 4 No. 1 (2026): Noumerico, March 2026
Publisher : Universitas Islam Tribakti Lirboyo Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33367/jtme.v4i1.8663

Abstract

This study aims to describe students’ mathematical literacy processes when solving PISA problems in the Space and Shape content domain, based on the three PISA literacy processes: Formulating, Employing, and Interpreting. This research uses a descriptive qualitative approach with three ninth-grade students as subjects, selected through purposive sampling: S1 (moderate ability), S2 (low ability), and S3 (high ability). Data were collected through a mathematical literacy test consisting of three PISA Space and Shape problems (Problem 1, Problem 2, and Problem 3) and semi-structured interviews. Data analysis was conducted through data reduction, coding based on literacy process indicators, data display, and conclusion. The results show that S1, in Problem 1, was able to fulfil all mathematical literacy processes (Formulating, Employing, and Interpreting). S2, in Problem 2, was only partially able to achieve the Formulating stage and experienced difficulties with the Employing and Interpreting stages. Meanwhile, S3, in Problem 3, also only partially achieved the Formulating stage and failed to achieve the Employing and Interpreting stages due to an inaccurate mathematical model and inappropriate procedures. These findings indicate that the level of mathematical literacy achievement is not always aligned with students’ ability categories but is influenced by the characteristics of the problem and the accuracy of mathematical modelling. Therefore, learning should emphasise modelling activities, meaningful application of procedures, and interpretation of results in real-world contexts.
Machine Learning Enabled Social Media Competitive Intelligence System Hendri Handoko; Yulina Ismiyanti; Omar Arif Al-Kamari
CORISINTA Vol 3 No 1 (2026): February
Publisher : Pandawan Sejahtera Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33050/480er062

Abstract

Social media platforms generate massive volumes of publicly accessible digital data that reflect organizational competitive strategies, yet most existing competitor analyses remain manual, descriptive, and limited to surface-level engagement metrics, resulting in low scalability and weak strategic intelligence. This study proposes a Machine Learning Enabled Social Media Competitive Intelligence System designed to automate competitor strategy extraction through artificial intelligence and big data analytics. The objective is to develop a computational framework capable of identifying strategic content patterns, communication objectives, audience positioning, and paid advertising behaviors using data-driven techniques. Large-scale public data from social media posts, engagement indicators, and advertising transparency libraries are collected and processed through data preprocessing pipelines, including text normalization, tokenization, and feature extraction using TF-IDF and word embedding representations. Supervised machine learning algorithms are implemented to classify content themes, detect strategic clusters, and model competitive positioning patterns, while performance evaluation is conducted using accuracy, precision, recall, and F1-score metrics to ensure robustness and reliability. Experimental findings demonstrate that the proposed system significantly enhances analytical consistency, scalability, and strategic insight generation compared to traditional mixed method approaches. This research contributes to the advancement of AI-driven social media analytics and establishes a computational foundation for scalable big data-based competitive intelligence systems aligned with Artificial Intelligence and Big Data domains.