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Dimensionality Reduction using PCA and K-Means Clustering for Breast Cancer Prediction Ade Jamal; Annisa Handayani; Ali Akbar Septiandri; Endang Ripmiatin; Yunus Effendi
Lontar Komputer : Jurnal Ilmiah Teknologi Informasi Vol. 9, No. 3 December 2018
Publisher : Institute for Research and Community Services, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (364.208 KB) | DOI: 10.24843/LKJITI.2018.v09.i03.p08

Abstract

Breast cancer is the most important cause of death among women. A prediction of breast cancer in early stage provides a greater possibility of its cure. It needs a breast cancer prediction tool that can classify a breast tumor whether it was a harmful malignant tumor or un-harmful benign tumor. In this paper, two algorithms of machine learning, namely Support Vector Machine and Extreme Gradient Boosting technique will be compared for classification purpose. Prior to the classification, the number of data attribute will be reduced from the raw data by extracting features using Principal Component Analysis. A clustering method, namely K-Means is also used for dimensionality reduction besides the Principal Component Analysis. This paper will present a comparison among four models based on two dimensionality reduction methods combined with two classifiers which applied on Wisconsin Breast Cancer Dataset. The comparison will be measured by using accuracy, sensitivity and specificity metrics evaluated from the confusion matrices. The experimental results have indicated that the K-Means method, which is not usually used for dimensionality reduction can perform well compared to the popular Principal Component Analysis.
Fuzzy Reasoning House of Risk to Manage Supply Chain Risk in Wooden Toys Industries Widya Nurcahayanty Tanjung; Selma Himawan; Syarif Hidayat; Endang Ripmiatin; Selvy Sekar Asti; Ratu Siti Khodijah; Saaras Ayu Atikah
International Journal of Supply Chain Management Vol 8, No 5 (2019): International Journal of Supply Chain Management (IJSCM)
Publisher : International Journal of Supply Chain Management

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (775.276 KB)

Abstract

An unexpected event in the supply chain will disturb material flow and activities in the whole. The occurrence of such interference would have caused losses at time and cost. In order to anticipate this situation, it needs proper supply chain risk management. Research was done in wooden toy industry case study which has wide marketing range. Fuzzy Reasoning House of Risk (FRHOR) are used to solved the problem. FRHOR is combination of fuzzy reasoning risk assessment model and house of risk. House of Risk Method is used to identify the most potential risk agents, while the fuzzy reasoning risk assessment model is used to determine the risk severity by risk agents. Based on the analysis, it is found that risk agent stock out of the product is the most potential risk agent. To reduce the impact, recommended mitigation strategies that can be used for stock out product risk agents in werehouse are flexible supply base, safety stock, internal coordination, as well as create and control production schedules.
Analisa Genotype dan Serotype Virus Hepatitis B Potensial sebagai Kandidat Sekuens Vaksin Hepatitis B secara Bioinformatika Berbasis Web Vanny Narita; Imam Rosyadi; Endang Ripmiatin
JURNAL Al-AZHAR INDONESIA SERI SAINS DAN TEKNOLOGI Vol 2, No 2 (2013)
Publisher : Universitas Al Azhar Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36722/sst.v2i2.132

Abstract

Abstrak - Virus hepatitis B sudah menjadi masalah kesehatan publik terbesar ketiga dari populasi dunia yang dibuktikan dengan hasil serological infeksi kronis yang terjadi. Saat ini terdapat 10 jenis genotype virus hepatitis B, dari A hingga J, dan 4 jenis serotype yaitu adw, adr, ayw, dan ayr. Penelitian ini bertujuan untuk menentukan genotype dan serotype virus hepatitis B yang memiliki potensi sebagai kandidat vaksin hepatitis B. Salah satu metode yang efektif saat ini adalah bioinformatika, suatu multidisplin ilmu biologi berbasis web yang dapat mengeksplorasi berbagai urutan dan melihat filogeni. Hasil penelitian menunjukkan bahwa data sekuens yang dapat menjadi kandidat untuk desain vaksin hepatitis B yaitu virus hepatitis B genotype B dengan subgenotype B3, genotype C dengan subgenotype C6 untuk lingkup Indonesia, sedangkan untuk lingkup dunia diperoleh potensi dari serotype Adw. Abstrak - Hepatitis B virus has become the largest public health problem to three of the world’s population as evidenced by the results of serological chronic infections that occur. In the world, there are 10 types of hepatitis B virus genotypes present, from A to J, and 4 types of serotype, adw, adr, ayw, and ayr. In connection with various genotype and serotype, genotype and serotype candidate required potential so that the sequence can be used as a vaccine candidate sequence of hepatitis B. One of the effective methods currently is a web-based bioinformatics that could explore a variety of sequence and see the phylogeny, nor the annotations and predictions. Analysis of the sequence data predict can be candidate for the design of the hepatitis B vaccine hepatitis B virus genotype B with subgenotype B3, subgenotype C6 from genotype C with scope for Indonesia, while tha scope of the world to obtain the potential of serotype adw.
Sistem Otomasi Perpustakaan dengan Barcode SLTPI Al Azhar 8, Kemang Pratama Endang Ripmiatin; Riani Aliviani
JURNAL Al-AZHAR INDONESIA SERI SAINS DAN TEKNOLOGI Vol 1, No 3 (2012)
Publisher : Universitas Al Azhar Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36722/sst.v1i3.51

Abstract

Kesadaran orang akan pentingnya layanan prima yang nyaman bagi pelanggan, menuntut tersedianya sistem yang efisien dan handal. Perpustakaan SLTPI Al Azhar 8 sangat menyadari pentingnya sistem yang dapat meningkatkan kinerja karyawannya dengan cara meningkatkan efisiensi dan meminimalkan kerja manual untuk menghindari kesalahan manusia.  Dalam penelitian ini, sistem perpustakaan dirancang dengan menggunakan barcode scanner sebagai alat bantu input data, untuk dapat mempercepat kerja layanan dan meningkatkan akurasi data. Sistem Perpustakaan ini dirancang sesuai dengan proses bisnis yang ada dengan dilengkapi beberapa fitur baru yang teridentifikasi dalam tahap analisa kebutuhan seperti pengecekan  terhadap resources yang dimasukkan, perpindahan data antar pengguna dilakukan melalui sistem, sehingga dapat meningkatkan efisiensi proses bisnis yang berjalan saat ini.Recently people starts to realize the importance of service excellence and demand an efficient and reliable system. SLTPI Al Azhar 8 Library awares of the needs of new system  to improve its performance through maximizing staffs performance and minimizing manual operations to prevent human error. In this research, library system was designed to use barcode scanner as input tool, to shorten the service and increase data accuracy. This system was designed to fit the existing business process with additional features identified in the user requirement analysis stage, such as resource checking, automatic data transfer, to improve the existing business process.
PENGENALAN DAN PELATIHAN PEMROGRAMAN DASAR BLOCKLY KEPADA SISWA SMA AL AZHAR 1, 2 DAN 3 Riri Safitri; Ade Jamal; Endang Ripmiatin; Denny Hermawan; Arif Supriyanto
Jurnal Pemberdayaan Masyarakat Universitas Al Azhar Indonesia Vol 1, No 1 (2019)
Publisher : Universitas Al Azhar Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36722/jpm.v1i1.331

Abstract

Abstrak Teknologi komputer mempengaruhi setiap bidang kehidupan saat ini. ia masuk dan mengubah setiap bidang di dunia, mulai dari industri dan bisnis, transportasi, komunikasi, kesehatan, dan lain-lain. Setiap siswa memiliki kesempatan yang sama untuk mempleajari dan menguasai teknologi, belajar coding, menguasai algoritma, mempelajari bagaimana cara membuat aplikasi, bagaimana internet bekerja, dalam rangka memupuk kreativitas dan keterampilan menyelesaikan masalah (problem solving) yang akan sangat berguna bagi kehidupan mereka di masa depan. Program komputer/perangkat lunak atau software akan menjadi hal yang sangat penting, bahkan mungkin akan menjadi bahasa dunia ke depan. Tidak menguasai programming atau bahasa komputer di masa depan, akan sama efeknya dengan tidak bias baca tulis saat ini. Belajar ilmu komputer tidak hanya belajar tentang teknologi itu sendiri, namun juga belajar logika, penyelesaian masalah (problem solving), dan kreativitas. Oleh karena itu perlu adanya pengenalan dan pelatihan pemrograman untuk siswa sekolah untuk melatih kemampuan logika dan problem solving. Pelatihan pemrograman diberikan dalam bentuk simulasi Blockly berupa games yang menarik dan interaktif. Hasil dari pelatihan didapatkan bahwa siswa SMA peserta pelatihan merasa kegiatan ini sangat menarik dan bermanfaat dan dapat menambah pamahaman dan keterampilan mereka dalam hal IT dan penerapannya.Kata kunci: Coding, Komputer, Pemrograman, TIKAbstractComputer technology affects every area of life today. he entered and changed every field in the world, starting from industry and business, transportation, communication, health, and others. Every student has the same opportunity to learn and master technology, learn coding, master algorithms, learn how to make applications, how the internet works, in order to foster creativity and problem solving skills that will be very useful for their lives in the future . Computer / software or software programs will be very important, maybe even become the world language in the future. Not mastering programming or computer language in the future, it will have the same effect as the current non-literacy. Learning computer science not only learns about technology itself, but also learns logic, problem solving, and creativity. Therefore there is a need for introduction and programming training for school students to practice logic and problem solving skills. Programming training is provided in the form of Blockly simulations in the form of interesting and interactive games. The results of the training found that high school students participating in the training felt this activity was very interesting and useful and could add to their understanding and skills in terms of IT and its application. Keywords: Coding, Computer, Computer Science, Programming