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All Journal Jurnal Informatika Proceedings of KNASTIK Techno.Com: Jurnal Teknologi Informasi Jurnal Buana Informatika Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik Teknik dan Ilmu Komputer Jurnal Edukasi dan Penelitian Informatika (JEPIN) Journal of Information Systems Engineering and Business Intelligence Jurnal Teknologi dan Sistem Komputer Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) Jurnal Pendidikan (Teori dan Praktik) Informatika Pertanian CogITo Smart Journal JUTEI (Jurnal Terapan Teknologi Informasi) Jurnal ULTIMA InfoSys Jurnal ULTIMATICS Share : Journal of Service Learning Jurnal Informatika Jurnal Informatika dan Sistem Informasi Patria : Jurnal Pengabdian Kepada Masyarakat IAIC Transactions on Sustainable Digital Innovation (ITSDI) JUSTIN (Jurnal Sistem dan Teknologi Informasi) Prosiding Seminar Nasional Program Pengabdian Masyarakat Abdimas Altruis: Jurnal Pengabdian Kepada Masyarakat Jurnal Atma Inovasia JP (Jurnal Pendidikan) : Teori dan Praktik Jurnal Pengabdian Teknik dan Ilmu Komputer (PETIK) GIAT: Teknologi untuk Masyarakat SERVIRISMA: Jurnal Pengabdian kepada Masyarakat International Journal of Information Technology and Computer Science Applications (IJITCSA) JuTISI (Jurnal Teknik Informatika dan Sistem Informasi)

Antonius Rachmat Chrismanto

Program Studi Informatika Fakultas Teknologi Informasi Universitas Kristen Duta Wacana Yogyakarta

Author-ID : 245156

Agriculture, Biological Sciences & Forestry Arts Humanities Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Health Professions Library & Information Science Materials Science & Nanotechnology Medicine & Pharmacology Public Health Social Sciences Other

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Inovasi Pembelajaran Logika-Simbolik melalui Aplikasi DUTAlogic bagi Siswa Tunarungu Antonius Rachmat Chrismanto; Matahari Bhakti Nendya; Junius Karel Tampubolon; R Gunawan Santosa; Wayan Edi Sudarma; Handi Hermawan
Jurnal Pendidikan (Teori dan Praktik) Vol 5 No 1 (2020): Volume 5, Nomor 1, April 2020
Publisher : Fakultas Ilmu Pendidikan Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jp.v5n1.p%p

Logic is an analysis of methods of thinking. Logic emphasizes the form more than the content of arguments. mathematical logic is often also called the symbolic-logic is a part of mathematics that explores the application of formal logic to mathematics. This has a close relationship with the basic fundamental thinking of mathematics and theoretical computer science.In this research we do three important things, the first is conventional symbolic-logic training for SLB Negeri 1 Bantul. The second step is making of symbolic-logic learning application for deaf students called DUTAlogic and the third is seeing the comparison between conventional learning and learning using the DUTAlogic.Based on data analysis that was done. Thar result show that increase in symbolic logic ability (T) is 50%, increase in the ability of symbolic natural accuracy (N) is 50%. The used of DUTAlogic application is more attractive to deaf students because they feel happier, easier, more-understanding, more concentrated and more creative when doing symbolic-logic learning.

Pemberdayaan Kewirausahaan Berbasis Teknologi Informasi Bagi Masyarakat Penyandang Disabilitas Di Gunung Kidul Halim Budi Santoso; Argo Wibowo; Jong Jek Siang; Rosa Delima; Antonius Rachmat Chrismanto
Patria : Jurnal Pengabdian Kepada Masyarakat Vol 3, No 1: Maret 2021
Publisher : Universitas Katolik Soegijapranata

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24167/patria.v3i1.2298

Information Technology has been implemented in some sectors in life. One of them is the usage of Information Technology for online commerce. Mitra Sejahtera Disabled Person Organization has some featured products which are sold locally in some places nearby and only in Gunung Kidul. The usage of Information Technology in marketing will help people to expand the basic consumer and market. On the other hand, Mitra Sejahtera Disabled Person Organization does not have enough access and ability to start and open online shop. Furthermore, the usage of the smartphone for member of Mitra Sejahtera Disabled Person Organization has not been optimal yet, like the utilization of social media as an official account. Training and empowerment activities to Mitra Sejahtera Disabled Person Organization will contribute in increasing and optimizing the utilization of social media and e-commerce. This training and empowerment activities also will give some knowledge to the participant about how to open online shop in one of the biggest online marketplace in Indonesia. The result of this activity is official account in media social. The participant also encouraged and trained to start online shop in one of the biggest online marketplace platform in Indonesia.

Implementasi Sistem Crowdsourced Labelling Berbasis Web dengan Metode Weighted Majority Voting Antonius Rachmat C.; Yuan Lukito
ULTIMA InfoSys Vol 6 No 2 (2015): UltimaInfoSys :Jurnal Ilmu Sistem Informasi
Publisher : Universitas Multimedia Nusantara

Crowdsourced Labelling is a large scale data labelling process, solicits a large group of people to label the data, usually via Internet. This paper discusses about design and implementation of Web-based Crowdsourced Labelling. Supervised learning classification methods need labelled training data for its training phase. Unfortunately, in many cases, there aren’t any already available labelled training data. Large scale data labelling is a tedious and time consuming work. This research develops a web-based crowdsourced labelling which able to solicit a large group of people as data labeler to speed up the data labelling process. This system also allows multiple labeler for every data. The final label is calculated using Weighted Majority Voting method. We grabbed and used Facebook comments from the two candidates’ Facebook Page of 2014 Indonesian Presidential Election as testing data. Based on the testing conducted we can conclude that this system is able to handle all the labelling steps well and able to handle collision occurred when multiple labeler labelling a same data in the same time. The system successfully produces final label in CSV format, which can be processed further with many sentiment analysis tools or machine learning tools. Index Terms - Crowdsources labeling, web-based system, supervised learning, weighted majority voting.

Analisis Rancang Bangun Sistem Repositori Institusi Berbasis Metadata Dublin Core di UKDW Yogyakarta Antonius Rachmat C.
ULTIMA InfoSys Vol 5 No 2 (2014): UltimaInfoSys :Jurnal Ilmu Sistem Informasi
Publisher : Universitas Multimedia Nusantara

In this paper we will discuss how to design and analysis a repository system in university, Duta Wacana Christian University (DWCU). The system is web-based, and implements Dublin Core (DC) metadata, using tagging systems, and implements Open Archive Initiatives-Protocol for Metadata Harvesting (OAI-PMH) data provider. The term Institutional Repository (IR) appears since 2003 and is now widely used in various institutions including universities. IR university is a place that contains digital work data, both scientific and non-scientific research from entire academic community of the university. IR univesitry contains many formats such as documents (text), audio (sound), and video. Development of the system has been conducted by the author and team and produce a repository that has appropriate permissions to the stored data, it is applying the standard DC metadata and tagging on each of its file, it has preview feature, and able to perform searching based on tag and DC metadata that previously stored in it. The results concluded that implementation of DC metadata that store permanently in each file, causes each file has a unique metadata signature, so that each file downloaded from the system is actually (originally) comes from UKDW institutional repository. The use of tagging on each file allows categorization and retrieval based on tags, and OAIPMH protocol implementation allows IR data provider collaborate and integrate with other OAI-PMH systems, such as Portal Garuda that owned by Indonesian Higher Education (DIKTI). Index Terms - Institutional Repository (IR), metadata, Dublin Core (DC, tagging, OAI-PMH data provider.

Kajian dan Rekomendasi Sistem Pemetaan Lahan Pertanian Halim Budi Santoso; Antonius Rachmat C; Rosa Delima; Argo Wibowo
ULTIMA InfoSys Vol 11 No 1 (2020): Ultima InfoSys : Jurnal Ilmu Sistem Informasi
Publisher : Universitas Multimedia Nusantara

Implementation of Information Technology in agriculture sector is able to raise farming productivity. One of the Information Technology implementation is mapping system for agriculture land which has not only data collection but also strategic role. This paper discusses literature review of implementation of web mapping system, either from user perspective and functional perspective. On the end of the paper will discuss feature, opportunities, and challenges to develop and implement Web Mapping System. This paper also gives some recommendatios in order to support web mapping system implementation.

Implementasi Rocchio’s Classification dalam Mengkategorikan Renungan Harian Kristen Elisabeth Adelia Widjojo; Antonius Rachmat C; R. Gunawan Santosa
Ultimatics : Jurnal Teknik Informatika Vol 6 No 1 (2014): Ultimatics: Jurnal Ilmu Teknik Informatika
Publisher : Faculty of Engineering and Informatics, Universitas Multimedia Nusantara

Nowadays, many Christian institutions are using digital media to save spiritual pictures, musics or videos, even daily devotional articles which is usually printed monthly. Since many daily devotionals are published in the Internet, it will be difficult to find a daily devotional articles with a spesific topic/category. To make it easier, in this research we use Rocchio’s classification, which use TF-IDF weighting for classification and centroid calculation in every category to classify daily devotional articles. Every testing article will be matched with the centroid using cosine similariy. As a result, the system accuracy is 73,33% using 20% of feature selection. The highest precision goes to Wisdom category which score is 1 for precision by using 100% feature selection. While the highest recall goes to Motivaton category which score is 1 by using 100% feature selection.. Index Terms—classification, categorization, daily devotional article, Rocchio’s classification, centroid, similarity

Deteksi Komentar Spam Bahasa Indonesia Pada Instagram Menggunakan Naive Bayes Antonius Rachmat C; Yuan Lukito
Ultimatics : Jurnal Teknik Informatika Vol 9 No 1 (2017): Ultimatics: Jurnal Ilmu Teknik Informatika
Publisher : Faculty of Engineering and Informatics, Universitas Multimedia Nusantara

Instagram is the most famous pictures and videos media sharing based on the web & mobile application. Instagram users can have picture posts that can be commented by their followers. Indonesian public figures such as actors, actresses, musicians use Instagram to promote their activities to their followers. Unfortunately, there are a lot of spam comments in Instagram that need special attention and have to be removed. This research grabs Instagram comments and builds the dataset from Indonesian public figures who have more than one million followers. By using preprocessing (tokenization, stop words removal, and stemming), TF-IDF weighting, and supervised learning, Naive Bayes method is used to detect spam comments in Indonesian. Naive Bayes produces 74,31% accuracy rate on unbalanced datasets and 77,25% accuracy rate on balanced datasets. This result shows that Naïve Bayes can be used to build an automatic Indonesian spam comments detector on Instagram with high accuracy rate. The novelty of this research is that Naive Bayes can be used to detect spam comment on our Indonesian Instagram comments dataset. Index Terms—Instagram, Naive Bayes, Indonesian spam comments, spam comments detection.

PELATIHAN GOOGLE SUITE TERHADAP DEWAN PAROKI KLATEN DAN PENGUKURAN TINGKAT PENERIMAAN TEKNOLOGINYA Lukas Chrisantyo; Yuan Lukito; Antonius Rachmat Chrismanto
Share : Journal of Service Learning Vol. 6 No. 1 (2020): FEBRUARY 2020
Publisher : Institute of Research and Community Outreach - Petra Christian University

Mempersiapkan daya saing masyarakat dalam industri era 4,0 dari generasi imigran digital memiliki tantangan tersendiri. Dewan Paroki Santa Maria Assumpta Klaten adalah contoh dari sebuah komunitas yang sebagian besar diisi oleh orang yang lahir sebelum generasi Milenium, atau sebelum 1980. Tugas kerja dan pelayanan dewan paroki sendiri memerlukan banyak bantuan teknologi dalam mempersiapkan, mengelola dan melaporkan program pastoral. Google Suite dipilih sebagai teknologi yang diharapkan dapat membantu pekerjaan dewan paroki. Pelatihan Google Suite disediakan dalam empat sesi, masing-masing berfokus pada pembuatan akun, penyimpanan data dan manajemen file, kolaborasi pengeditan file, koordinasi acara bersama, dan pembuatan formulir online. Pada akhir pelatihan, kuesioner dikerahkan untuk mengukur tingkat penerimaan teknologi. Dari perhitungan yang dibuat, disimpulkan bahwa Dewan Paroki Santa Maria Assumpta Klaten memiliki niat baik untuk belajar Google suite dan menganggap bahwa aplikasi ini bermanfaat untuk kegiatan pelayanan gerejawi mereka.Preparing competitiveness in the Industry 4.0 era towards the people from digital immigrant generation has its own challenges. The Parish Council of Santa Maria Assumpta Klaten is an example of a community that is mostly filled by people born before the millennial generation, or before 1980. The work and service assignments of the Parish Council itself require a lot of technological assistance in preparing, managing and reporting pastoral programs. Google Suite was chosen as a technology that is expected to help the work of the Parish Council. Google Suite training is provided in four sessions, each of which focuses on account creation, cloud storage and file management, file editing collaboration, coordination of shared events, and online form creation. At the end of the training, a questionnaire was deployed to measure the level of acceptance of the technology. From the calculations made, it was concluded that the Parish Council of Santa Maria Assumpta Klaten had good intentions to study Google Suite and considered that this application was beneficial for their ecclesiastical service activities.

IMPLEMENTASI ALGORITMA FP-GROWTH UNTUK SISTEM REKOMENDASI BUKU DI PERPUSTAKAAN UKDW Rama Novta Miraldi; Antonius Rachmat Christanto; Budi Susanto
Jurnal Informatika Vol 10, No 1 (2014): Jurnal Teknologi Komputer dan Informatika
Publisher : Universitas Kristen Duta Wacana

The number of collections in a library will be increase along with the growth of the library. The Library of Universitas Kristen Duta Wacana (UKDW) also has a large number-of books collection in order to provide literature and resources service to students. Wen the number of collection is very large, we need a retrieval system that will help anyone to find the needed resoLtrces. This system has a recommendation feature to provide related books or resources. This feature will help users to find similar literature/resources or related topic with what they need. This paper will describe about the main design and implementation of the book recommendation based on FP-Growth algorithm. Based on the experiments, this system can provide 60.78% of accuracy for related books recommendation.

ENKRIPSI DAN DEKRIPSI DENGAN ALGORITMA AES 256 UNTUK SEMUA JENIS FILE Voni Yuniati; Gani Indriyanta; Antonius Rachmat C.
Jurnal Informatika Vol 5, No 1 (2009): Jurnal Informatika
Publisher : Universitas Kristen Duta Wacana

Kemajuan teknologi komputer dan telekomunikasi telah menjadi kebutuhan dansangat membantu dalam menyelesaikan banyak pekerjaan dengan cepat, akurat, danefisien. Namun seiring dengan kemajuan teknologi, terdapat dampak negatif berupapenyadapan data sehingga aspek keamanan dalam pertukaran informai dianggap penting.Dalam dunia informasi terdapat data-data penting dan bersifat rahasia yang tidak bolehdiketahui oleh umum.Kriptografi merupakan salah satu solusi atau metode pengamanan data yangtepat untuk menjaga kerahasiaan dan keaslian data, serta dapat meningkatkan aspekkeamanan suatu data atau informasi. Metode ini bertujuan agar informasi yang bersifatrahasia dan dikirim melalui suatu jaringan, seperti LAN atau Internet, tidak dapat diketahuiatau dimanfaatkan oleh orang atau pihak yang tidak berkepentingan. Kriptografimendukung kebutuhan dua aspek keamanan informasi, yaitu perlindungan terhadapkerahasiaan data informasi dan perlindungan terhadap pemalsuan dan pengubahaninformasi yang tidak diinginkan.Hasil penelitian menunjukkan bahwa algoritma AES dengan panjang kunci 256 bitdapat menyandikan isi suatu file sehingga dapat mengamankan file tersebut. Ukuran fileenkripsi akan bertambah 11 bytes dari file asli karena adanya proses penambahan headeryang berisi informasi ekstensi file. Dalam pengembangan sistem berikutnya diharapkansistem dapat mempunyai fasilitas untuk menyembunyikan folder yang digunakan untukmenyimpan file enkripsi maupun file dekripsi.

Co-Authors Abednego Kristiawan Takaredase Abednego Kristiawan Takaredase, Abednego Kristiawan Aditya Kurniawan Effendi Aditya Wikan Mahastama Ahmad Ashari Aloysius Adhyatma Herfangsyah Andronicus Riyono Anny Kartika Sari Ardhy Chandra Kurniawan Argo Wibowo Argo Wibowo Arnan Dwika Diasmara Astuti, Laksmita Widya Balisa, Delfia Bhernardin Erryco Gagah Pattriskak Blasius Neri Puspika Budi Susanto Budi Susanto Cahyanto, Ruddy Damayanti, Elok Daniel Hutama Putra Danny Sebastian Dea Alverina Delfia Balisa Denna Prestianti Desyandri Desyandri Diasmara, Arnan Dwika Elisabeth Adelia Widjojo Erick Kurniawan Erick Kurniawan Erinda Resha Astanti Gabriella Amelia Prasetyo Gani Indriyanta Gilang Purnajati, Oscar Gloria Virginia Gregorius Titis Indrajaya Gregorius Titis Indrajaya, Gregorius Titis Griffin Theresia R. Halim Budi Santoso Handi Hermawan Hendy Yudhitya Susetya Herlina Lina Hermawan, Handi Hizkia Juan Suryanto Hizkia Juan Suryanto, Hizkia Juan Ignatia Dhian E.K.R. Ignatia Dhian E.K.R., Ignatia Dhian Joko Purwadi Joko Purwadi Jong Jek Siang Jong Jek Siang Junius Karel Tampubolon Junius Karel Tampubolon Karmela Saturnina Mega Wea Karmela Saturnina Mega Wea Katon Wijana Katon Wijana Katon Wijana Katon Wijana Kristanto G, Steven Kristian Adi Nugraha Kristian Adi Nugraha Kurniani, Kezia Trifena Lemmuela Alvita Kurniawati, Lemmuela Alvita Lucia Dwi Krisnawati Lukas Chrisantyo Lukas Chrisantyo Lukas Chrisantyo Matahari Bhakti Nendya Matahari Bhakti Nendya, Matahari Bhakti Meldy Saimon Pinontoan Mikhael Meier Nathaniel Clarence Haryanto Nugroho Agus Haryono Pinontoan, Meldy Saimon Raden Gunawan Santosa Rama Novta Miraldi Ratih Alfionita Restyandito Rini, Maria Nila Anggia Rosa Delima Ruddy Cahyanto Sebastian, Danny Sefia Chandra Selvy Welianto Sudarma, Wayan Edi Sudiarto Raharjo, Willy Susilo, Anton Sylvia Putri Gunawan Tanujaya, Yoel Togatorop, Joiner Tennye Ariel Verianto, Eko Voni Yuniati Wahju Satria Wibowo Waworuntu, Ghea Natasya Pingkan Wayan Edi Sudarma Widi Tamtama, Gabriel Indra Wilbert Wilbert Willy Ristanto Willy Sudiarto Willy Sudiarto Raharjo Willy Sudiarto Raharjo Willy Sudiarto Raharjo Yanuar Budi Prasetyo Yohanes Suyanto Yuan Lukito Yuan Lukito Yunita Sari

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