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All Journal International Journal of Electrical and Computer Engineering IAES International Journal of Artificial Intelligence (IJ-AI) Seminar Nasional Aplikasi Teknologi Informasi (SNATI) Mechatronics, Electrical Power, and Vehicular Technology TELKOMNIKA (Telecommunication Computing Electronics and Control) Bulletin of Electrical Engineering and Informatics Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik Jurnal Transportasi Jurnal Teknologi Prosiding SNATIF International Journal of Advances in Intelligent Informatics ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Proceeding of the Electrical Engineering Computer Science and Informatics Techne : Jurnal Ilmiah Elektroteknika Communications in Science and Technology Buletin Ilmiah Sarjana Teknik Elektro IJITEE (International Journal of Information Technology and Electrical Engineering) Indonesian Journal of Electrical Engineering and Computer Science International Journal of Quantitative Research and Modeling Teknika STTKD: : Jurnal Teknik, Elektronik, Engine Automotive Experiences
Oyas Wahyunggoro
Univeristas Gadjah Mada
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Transportation

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Journal : Communications in Science and Technology

 1 
Interval type-2 fuzzy logic system for diagnosis coronary artery disease Sajiah, Adha Mashur; Setiawan, Noor Akhmad; Wahyunggoro, Oyas
Communications in Science and Technology Vol 1 No 2 (2016)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.1.2.2016.26

Abstract

Coronary artery disease (CAD) is a disease that has been the deadliest disease in Indonesia. The ratio of cardiologists over potential patients is not appropriate either. Intelligent system which can help doctors or patients for cheap and efficient diagnosing CAD is needed. Medical record data, acquisition of cardiologist knowledge and computing technology can be utilized for developing fuzzy logic based intelligent system. Type-1 fuzzy logic system (T1 FLS) has been widely used in various fields. T1 FS has limitation in representing and modelling uncertainty and minimize the impact. Whereas, type-2 fuzzy set (T2 FS) was also introduced as fuzzy set that can model uncertainty more sophisticated. T2 FLS does have a higher degree of freedom when modeling uncertainty but it is quite difficult to make the membership function. An interval T2 FS is a T2 FS in which the membership grade on third dimension is the same everywhere so it is simpler than T2 FS. This paper aims to clarify the better capability of IT2 FLS over T1 FLS on the development of CAD diagnosis system. Rules and membership function were formulated with the help of fuzzy c-means. This study illustrated the causes of CAD risk factors, fuzzification, type reduction and defuzzification. The resulted system was tested with percentage split method (50%-50%) to produce training data and testing data. This test is performed ten times with random seed to separate the data set. The resulted system generates an average of 73.78% accuracy, 71.94% sensitivity and 76.52% specificity.
A robust automated system for detecting and recognising the digit of electrical energy consumption number of the postpaid kWh-meter Pujiharsono, Herryawan; Nugroho, Hanung Adi; Wahyunggoro, Oyas
Communications in Science and Technology Vol 2 No 2 (2017)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.2.2.2017.61

Abstract

Most of the processes of kilowatt-hour meter (kWh-meter) reading in Indonesia are still in manual process which may lead to some problems, such as time consumption and high possibility of data entry errors.  Therefore, this study proposes an automated system to minimise these problems.  This system is developed for the image with uneven illumination condition and tilted position of stand kWh-meter due to the unavoidable situation while capturing the kWh-meter image.  In this study, the illumination problem is solved by local thresholding and the tilted position of stand kWh-meter is solved by combination of morphology operations and vertical edge detection on the location detection process and vertical-horizontal projections on the segmentation process.  Finally, the numeral recognition is performed by support vector machine (SVM) classifier with zonal density feature as a selected input.  The results show that the accuracy of proposed system is 93.55% on detection location process, 89.38% on segmentation process, and 78.10% on numeral recognition process.
Co-Authors ., Priyatmadi Adha Cahyadi Adha Cahyadi, Adha Adha Imam Cahyadi Adha Iman Cahyadi Adha Iman Cahyadi Adhi Susanto Agus Sujono Agus Sujono Awang Hendrianto Pratomo Bhisma Adji Pramana Bhisma Adji Pramana, Bhisma Adji Bobby Rian Dewangga Bwo Ren Ke Dani Prasetyo Daniel Santoso Edy Raharjo, R Suryoto Eka Firmansyah Eka Firmansyah Erwan Eko Prasetiyo Ginting, Almido Almido Haryanto Hanifah Rahmi Fajrin, Hanifah Rahmi Hanung Adi Nugroho Hari Maghfiroh Hari Wibawa Harmoko Harmoko Ibrahim Kamaruddin Ibrahim Kamaruddin Indah Soesanti Irwan Novianto Iswanto Iswanto Kartika Firdausy Kuo Lung Lian Kusban, Muhammad Lora Khaula Amifia Lukito Edi Nugroho M. Nisvo Ramadan M. Nisvo Ramadan, M. Nisvo Madzlan Napiah Madzlan Napiah Maghfiroh, Hari Muhammad Bayu Sasongko Muhammad Fikri Ardiansyah Noor Akhmad Setiawan Nugroho, Anan Nurman Setiawan Prapto Nugroho Prapto Nugroho Prayadi Sulistyanto Priyatmadi . R Suryoto Edy Raharjo R. Soekrisno Risanuri Hidayat Risky Via Yuliantari Roedy Kristiyono Rudi Uswarman Sajiah, Adha Mashur Seta Yuliawan Sigit Agung Widayat Sigit Agung Widayat, Sigit Agung Soekrisno, R. Sujono, Agus Surriani, Atikah Suwardo Suwardo Suwardo Suwardo Syifaun Nafisah Triharminto, Hendri Himawan Widyawati Prima, Widyawati