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All Journal International Journal of Advances in Intelligent Informatics Jurnal Tadris Matematika
Nadia Roosmalita Sari
Institut Agama Islam Negeri (IAIN) Tulungagung
Computer Science & IT Education

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Evolution strategies based coefficient of TSK fuzzy forecasting engine Nadia Roosmalita Sari; Wayan Firdaus Mahmudy; Aji Prasetya Wibawa
International Journal of Advances in Intelligent Informatics Vol 7, No 1 (2021): March 2021
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/ijain.v7i1.376

Abstract

Forecasting is a method of predicting past and current data, most often by pattern analysis. A Fuzzy Takagi Sugeno Kang (TSK) study can predict Indonesia's inflation rate, yet with too high error. This study proposes an accuracy improvement based on Evolution Strategies (ES), a specific evolutionary algorithm with good performance optimization problems. ES algorithm used to determine the best coefficient values on consequent fuzzy rules. This research uses Bank Indonesia time-series data as in the previous study. ES algorithm uses the popSize test to determine the number of initial chromosomes to produce the best optimal solution for this problem. The increase of popSize creates better fitness value due to the ES's broader search area. The RMSE of ES-TSK is 0.637, which outperforms the baseline approach. This research generally shows that ES may reduce repetitive experiment events due to Fuzzy coefficients' manual setting. The algorithm complexity may cost to the computing time, yet with higher performance.
Animation Media to Improve Student Learning Results Nadia Roosmalita Sari
Jurnal Tadris Matematika Vol 1 No 2 (2018)
Publisher : Institut Agama Islam Negeri (IAIN) Tulungagung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21274/jtm.2018.1.2.145-156

Abstract

Learning methods in schools tend to use lecture and book models as learning media. Whereas at present, technology is growing rapidly. The use of technology as a learning medium is very important to attract students' interest in learning. At the Elementary School level, children still like learning while playing. This research proposes animation as a learning media for students in elementary schools. This media can be used by teachers as learning media. This animation media is expected to attract students' interest in learning, especially in mathematics subjects. In animation, visualization in the form of images moving on the subject of mathematics becomes one of the things that need to be optimized. The purpose of this study was to develop animation learning media as an alternative self-learning tool to help to master mathematics subjects for students and find out the feasibility of products for mathematics learning. The research and development methodology used in this study is Research and Development (R & D). This methodology covers all things related to development to produce quality interactive learning media software. Based on the trial, 81% of media experts, 88% of material experts, 70% of initial field tests, and 93% of field trials were obtained. Based on these results, the animation media for mathematics subjects has been feasible to be used as a medium of self-learning with an average value of 83% validation.
Co-Authors Aji Prasetya Wibawa Wayan Firdaus Mahmudy