Articles

MINING MULTIDIMENSIONAL FUZZY ASSOCIATION RULES FROM A DATABASE OF MEDICAL RECORD PATIENTS

Jurnal Informatika Vol 9, No 1 (2008): MAY 2008
Publisher : Institute of Research and Community Outreach - Petra Christian University

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Abstract

Mining association rules is one of the important tasks in the process of data mining application. In general, the input as used in the process of generating rules is taken from a certain data table by which all the corresponding values of every domain data have correlations one to each others as given in the table. A problem arises when we need to generate the rules expressing the relationship between two or more domains that belong to several different tables in a normalized database. To overcome the problem, before generating rules it is necessary to join the participant tables into a general table by a process called Denormalization Process. This paper shows a process of generating Multidimensional Fuzzy Association Rules mining from a normalized database of medical record patients. The process consists of two sub-processes, namely sub-process of join tables (Denormalization Process) and sub-process of generating fuzzy rules. In general, the process of generating the fuzzy rules has been discussed in our previous papers [1, 2, 3, 4]. In addition to the process of generating fuzzy rules, this paper proposes a correlation measure of the rules as an additional consideration for evaluating interestingness of provided rules.

APLIKASI TES ONLINE MENGGUNAKAN HANDPHONE DENGAN PLATFORM JAVA DAN KONEKSI GPRS

Jurnal Informatika Vol 9, No 1 (2008): MAY 2008
Publisher : Institute of Research and Community Outreach - Petra Christian University

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Abstract

Nowadays, cellular phone improves so fast and already supported by GPRS and Java technology. With this facilities enabling internet connection to computer server via cellular phone. This is the background idea to develop online test application using cellular phone to as alternative media. In this research, an online test application has been developed which enable users to take a particular test that consists of multiple choice items with either single or multi answers and essay items, whether it has reading text or not, and see their test result via their own cellular phones. This application will utilize GPRS connection to communicate with the server. This application was developed by using Java programming language. The Java platform being used is Java 2 Micro Edition (J2ME) on the cellular phone application and Java Server Page (JSP) for the server application. This application has been tested and running well on Nokia 6600, Nokia 7610, Nokia N73, Ben-Q Siemens EF51, and Motorola L6 phone using ProXL, IM3, Mentari, and Simpati communication providers. Although the communication speeds are varied among providers, the application is running as intended. Abstract in Bahasa Indonesia : Saat ini perkembangan handphone semakin berkembang, merupakan sesuatu yang telah umum suatu handphone yang menyediakan fasilitas koneksi General Packet Radio Service (GPRS) dan fasilitas teknologi Java. Dengan adanya fasilitas Java dan GPRS ini memungkinkan adanya koneksi online menggunakan handphone ke suatu komputer server melalui internet. Hal ini mendasari pembuatan aplikasi tes online menggunakan handphone sebagai media alternatif dalam penyelenggaraan dan pengerjaan tes yang selama ini umumnya menggunakan media kertas ataupun komputer. Pada penelitian ini dikembangkan aplikasi tes online yang memungkinkan peserta handphone untuk mengerjakan tes yang terdiri dari soal multiple choice dengan single maupun multi answer, dan soal essay baik yang memiliki teks bacaan maupun tidak, serta melihat hasil tes yang pernah diikutinya. Aplikasi tes online ini menggunakan koneksi GPRS untuk berkomunikasi dengan komputer server dan dibuat dengan menggunakan bahasa pemrograman Java. Platform Java yang digunakan adalah Java 2 Micro Edition (J2ME) pada sisi handphone dan Java Server Page (JSP) pada sisi server. Berdasarkan hasil pengujian, sistem aplikasi tes online dapat berjalan dengan baik pada Nokia 6600, Nokia 7610, Nokia N73, Ben-Q Siemens EF51, dan Motorola L6 dengan menggunakan operator ProXL, IM3, Mentari, dan Simpati. Kecepatan transfer data tergantung dari kecepatan GPRS yang disediakan oleh masing-masing operator. Kata Kunci : J2ME, JSP, tes online

SISTEM PERHITUNGAN HARGA POKOK PRODUKSI PADA PERUSAHAAN FARMASI PT. BALATIF DENGAN METODE PROCESS COSTING

Jurnal Informatika Vol 10, No 2 (2009): NOVEMBER 2009
Publisher : Institute of Research and Community Outreach - Petra Christian University

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Abstract

Nowadays, PT. Balatif has the calculation system for production cost that can only include the calculation of cost of materials based on standard Bill of Material (BOM), while record of factory overhead cost, direct labor cost and report that relating to the calculation of Cost of Goods Manufactured of product still cannot be handled by the system. So that the current costs that really occurred in the production process will be difficult to trace and the production cost not based on reality process. Based on that problem, this research design a system to calculate production cost that can handle that problem. This application used Microsoft Visual Studio .Net 2005 as the programming tool and Oracle 10g as the database. Results that obtained from the application that have been made are raw material usage can be saved based on BOM or additional, machine usage, operator usage, and so on associated with the production process. In addition, the application that has been made can be used to allocate the costs that occur during the production process and to generate reports related to the calculation of Cost of Goods Manufactured of a product automatically.

APLIKASI QUESTION ANSWERING SYSTEM DENGAN METODE RULE-BASED QUESTION ANSWERING SYSTEM PADA ALKITAB

Jurnal Informatika Vol 11, No 1 (2012): MAY 2012
Publisher : Institute of Research and Community Outreach - Petra Christian University

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Abstract

The Bible as the holy book of Christians who are very close to the religious life and as a moral guide for Christians. So the Bible become a necessity when a christians want to search for for specific data or information. But sometimes to find the answer to a question people sometimes having a trouble, because people did not know how to find the answer that they are looking for at the verses in the Bible that’s relatively large of amount. Therefore an application that have an ability to provide answers from the Bible verses that have the possibility of answers to questions raised by the user is needed. Where users can enter questions using keyword when, where, why, whom and what. Question Answering System Application will operate on a digital Bible in Indonesian language by using Rule-Based Question Answering System and created using Visual Basic 6.0 and Microsoft Access 2003 database. Based on application testing that made, the aplication has been able to find answers to the questions that asked according to the keywords. Meanwhile, based on testing with the questionnaire, the application obtained an average percentage of 77.2% from the respondents.

Aplikasi Security Surveillance System Menggunakan Webcam dan HP dengan Fasilitas General Packet Radio Services dan MMS

Jurnal Teknik Elektro Vol 5, No 2 (2005): SEPTEMBER 2005
Publisher : Institute of Research and Community Outreach

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Abstract

Mobile phone has changed from an ordinary telecommunication device into a multi-purpose device with various capabilities. Besides working as a communication device, a mobile phone can also be used as a internet connection (via GPRS) and a picture sender and receiver (via MMS). In this research, we will develop a Security Surveillance System which enables the user to monitor condition from a room from a long distance. This security surveillance system use webcam and will send an MMS to the user automatically, if a motion is detected. This system is implemented using Visual Basic and Java programming languages. According to our test results, we conclude that this Security Surveillance System running well. But system using GPRS and MMS still not suitable to be implemented in Indonesia. This is due to the poor network infrastructure of the GPRS and MMS services in Indonesia. In the future, if the infrastructure of the GPRS and MMS services in Indonesia is working properly, this system is quite reliable as security surveillance system. Abstract in Bahasa Indonesia : Handphone telah berubah dari alat telekomunikasi biasa menjadi alat serbaguna yang mempunyai berbagai fasilitas. Selain untuk berkomunikasi handphone juga dapat digunakan sebagai koneksi internet (lewat fasilitas GPRS) dan pengiriman gambar (lewat fasilitas MMS). Pada pembuatan penelitian ini akan dikembangkan security surveillance system yang memungkinkan user untuk memantau keadaan ruangan dari jarak jauh. Security surveillance system akan menggunakan webcam yang akan mengirimkan MMS kepada user secara otomatis jika terdeteksi adanya suatu gerakan. Security surveillance system dibuat dengan menggunakan program Visual Basic dan Java. Berdasarkan hasil pengujian sistem, maka dapat disimpulkan bahwa security surveillance system yang dibuat telah mampu bekerja dengan baik. Tetapi penggunaan GPRS dan MMS belum cocok untuk diimplementasikan di Indonesia. Hal ini disebabkan karena buruknya jaringan infrastruktur layanan GPRS dan MMS di Indonesia. Kata kunci: motion detection, security surveillance system, MMS, GPRS.

PERANCANGAN DAN PEMBUATAN APLIKASI SISTEM PAKAR UNTUK PERMASALAHAN TINDAK PIDANA TERHADAP HARTA KEKAYAAN

Jurnal Informatika Vol 5, No 1 (2004): MAY 2004
Publisher : Institute of Research and Community Outreach - Petra Christian University

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Abstract

Indonesia has several laws and rules, one of them is Kitab Undang-undang Hukum Pidana (KUHP) or criminal code. The most frequent to happened in criminal case is criminal case of wealth. Law domain is very complex, so that its difficult for common people to understand and categorize a criminal case based on the Criminal Code. It will be very helpful if there is a computer program that could help people to understand and categorize a criminal case based on the criminal code. The main topic in this research is the designing and making of a rule-based expert system for criminal case of wealth problems . This expert system development is using forward chaining inference method, which is a data-driven inference process for finding a conclusion. Law contents of this expert system program are adopted from the Criminal Code. Criminal cases discussed in this expert system program are: thievery, extortion and threat, embezzling, cheating, act of damaging and passing goods from a criminal case. The purpose of this software is to make an expert system program to select chapters of the Criminal Code which are involved in a criminal case. This expert system development are based on this following steps: analyze the law topic, designing block diagrams, dependency diagrams and decision tables, implement design into a computer program, and testing the program. This expert system development is using Borland Delphi 6.0. as programming language and Micorosoft Access 2000 as database. Based on testing, this expert system program shows that this program still need more improvement on its law content with broaden law topic. Abstract in Bahasa Indonesia : Indonesia sebagai negara hukum, memiliki bermacam-macam peraturan hukum, salah satunya adalah Kitab Undang-undang Hukum Pidana (KUHP) yang digunakan untuk mengatur berbagai macam tindak pidana. Adapun jenis tindak pidana yang sering terjadi adalah tindak pidana terhadap harta kekayaan. Masalah hukum pidana sangat kompleks sehingga sulit bagi orang awam untuk mengerti dan memilah-milah pasal-pasal yang mengatur suatu kasus hukum. Hal ini sering membingungkan bagi orang awam saat terlibat dalam suatu kasus hukum sehingga perlu ada sebuah program komputer untuk membantu memahami dan memilah-milah pasal-pasal yang terlibat dalam suatu kasus hukum. Pembahasan utama dalam penelitian ini adalah perancangan dan pembuatan sistem pakar rule-based untuk permasalahan hukum pidana terhadap harta kekayaan. Pengembangan sistem pakar ini menggunakan metode inferensi forward chaining, yaitu proses inferensi yang memulai pencarian dari premis atau data menuju pada konklusi. Materi hukum untuk program sistem pakar ini diadopsi dari Kitab Undang-undang Hukum Pidana (KUHP). Permasalahan hukum yang dibahas meliputi: pencurian, pemerasan dan pengancaman, penggelapan, kecurangan, perusakan dan penadahan. Tujuan dari software ini adalah membuat sistem pakar yang digunakan untuk menyeleksi pasal-pasal KUHP yang terlibat dalam sebuah kasus pidana. Pembuatan sistem pakar ini dilakukan dengan tahapan sebagai berikut: menganalisa permasalahan hukum dengan melibatkan praktisi hukum, membuat desain sistem pakar, mengimplementasikan desain dalam program komputer dan melakukan uji coba dengan melibatkan praktisi hukum dan orang awam. Pembuatan sistem pakar ini menggunakan bahasa pemrograman Borland Delphi 6.0 dengan basis data Microsoft Access 2000. Hasil pengujian menunjukkan bahwa program masih membutuhkan pengembangan pada sisi materi hukumnya dengan pengembangan program sejenis dengan domain permasalahan hukum yang lebih luas, Kata kunci : Forward Chaining, Sistem Pakar, Rule-based, Hukum Pidana.

PEMBUATAN DATA WAREHOUSE PENGUKURAN KINERJA PROSES BELAJAR MENGAJAR DI JURUSAN TEKNIK INFORMATIKA UNIVERSITAS KRISTEN PETRA

Jurnal Informatika Vol 5, No 1 (2004): MAY 2004
Publisher : Institute of Research and Community Outreach - Petra Christian University

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Abstract

The analysis of an academic process from a university is one of tools to help decision making for the next academic process and to solve problems from the academic process. Data warehouse can help to provide the data which is needed to show the performance measurement of academic process. The information from the data warehouse is about lecturer and students performance, students pass grade subjects, and summary from each point of it. Abstract in Bahasa Indonesia : Analisis proses belajar mengajar dalam suatu universitas merupakan salah satu alat bantu yang digunakan untuk mengambil keputusan dalam proses belajar mengajar berikutnya maupun untuk permasalahan-permasalahan yang terjadi pada proses belajar mengajar tersebut. Data warehouse dapat membantu penyediaan data yang dibutuhkan dalam pengukuran kinerja proses belajar mengajar tersebut. Informasi yang dihasilkan pada data warehouse tersebut adalah kinerja dosen, kinerja mahasiswa, tingkat kelulusan mata kuliah dan summary dari nilai tiap mata kuliah. Kata kunci: data warehouse, pengukuran kinerja proses belajar mengajar

PERENCANAAN DAN PEMBUATAN PROGRAM SISTEM PAKAR UNTUK SPESIFIKASI JENIS ANJING

Jurnal Informatika Vol 2, No 2 (2001): NOVEMBER 2001
Publisher : Institute of Research and Community Outreach - Petra Christian University

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Abstract

Until now dogs always have a position as a human friend. With many kind of dogs so an expert was needed to identified the type of dogs based on the characteristics of the dog. But an human expert also have difficulties to identify because there are so many kind of dogs. Therefore, a system is needed to help the identification process. It is a system which can adopt the abilities of experts to identify the dog. With all the technological advancement these days, it have been developed a technology which able to adopt the process and human thinking. This particular technology is called Artificial Intelligence. Artificial Intelligence have many kind of application, one of them is an Expert System which have abilities to adopt a Knowledge Base from inputing data from experience of the expert on specific term. Principally, all the database of dogs with its characteristics will be added on a Knowledge Base. This base is take form as a database group, where the Inference Engine on the Expert System will work on these data to describe a specific dog based on the characteristic inputed by user through the user interface. This identification system to describe the dog was made using Delphi programming. On this program, searching kind of dog will be do by inputing characteristics of the dog that user want to find, then the program will find on Knowledge Base which dogs that match on that characteristics. Abstract in Bahasa Indonesia: Dari dahulu hingga saat ini anjing selalu menempati hubungan yang khusus sebagai sahabat manusia. Dengan banyaknya macam anjing yang ada maka dibutuhkan seorang pakar untuk mengidentifikasikan jenis anjing berdasar ciri-ciri dari anjing yang bersangkutan. Tetapi seseorang yang benar-benar ahli sekalipun terkadang kesulitan dalam mengidentifikasikannya karena adanya banyak sekali jenis anjing. Oleh sebab itu dibutuhkan suatu sistem yang dapat membantu pengindentifikasian. Yaitu suatu sistem yang dapat mengadopsi kemampuan para pakar untuk pengidentifikasian jenis anjing. Dengan adanya kemajuan teknologi yang makin pesat maka telah dikembangkan suatu teknologi yang mampu mengadopsi proses dan cara pikir manusia yaitu teknologi Artificial Intelligence atau kecerdasan buatan. Artificial Intelligence memiliki berbagai macam jenis aplikasi, salah satunya adalah Sistem Pakar atau Expert System yang memiliki kemampuan untuk mengadopsi suatu dasar pengetahuan (knowledge base) yang diperoleh melalui penginputan data dari kemampuan para pakar dalam suatu bidang tertentu yang bersifat spesifik. Pada prinsipnya seluruh data jenis anjing beserta ciri-cirinya akan dimasukkan pada suatu knowledge base yang berupa suatu kumpulan database dimana kemudian Inference Engine dari sistem pakar akan mengolahnya untuk mendiskripsikan jenis anjing berdasar ciri-ciri yang dimasukkan oleh user melalui fasilitas user interface.Sistem identifikasi untuk mendiskripsikan jenis anjing ini dibuat dengan menggunakan pemrograman delphi. Pada program ini, pelacakan jenis anjing dilakukan dengan memasukkan variasi ciri-ciri jenis anjing yang ingin dicari, kemudian program akan mencari pada knowledge base jenis-jenis anjing yang memiliki kriteria yang telah diinputkan. Kata kunci: sistem pakar, kecerdasan tiruan, knowledge base.

PEMBANGUNAN JARINGAN KOMPUTER NIRKABEL DENGAN FREEBSD SEBAGAI GATEWAY

Jurnal Informatika Vol 3, No 2 (2002): NOVEMBER 2002
Publisher : Institute of Research and Community Outreach - Petra Christian University

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Abstract

Wireless network is a quite new technology in computer network world. It can connect computers without any wire, but it use radio frequency at 2.4 GHz. Today computer network still use wire to connected computers. Wireless is use the air medium, so there is different medium between wire and air. To connect these two medium networks we need other hardware. The hardware is called access point, but there is other problem comes. Access point price is quite expensive, so to handle this problem people were tried to look for another alternative. The alternative is use a personal computer with FreeBSD operating system, but it cant simulate access point perfectly because access point is hardware. It doesnt matter that cant simulate perfectly because not all feature that access point have are use. Abstract in Bahasa Indonesia : Jaringan komputer nirkabel merupakan suatu teknologi yang cukup baru di dalam dunia jaringan komputer dimana teknologi ini memungkinkan menghubungkan komputer tanpa menggunakan kabel melainkan menggunakan gelombang dengan frekuensi 2.4 GHz.Jaringan komputer saat ini pada umumnya masih menggunakan kabel dengan adanya perbedaan media yaitu udara dan kabel maka dibutuhkan suatu alat untuk menggabungkan kedua jaringan yang berbeda media tersebut. Alat ini bernama access point. Tetapi ada masalah lain dimana harga access point tersebut tidaklah murah sehingga dicarikan alternatif lain yaitu menggunakan personal computer dengan sistem operasi FreeBSD. Tetapi alternatif tersebut tidak bisa sempurna seperti access point yang berupa perangkat keras. Tetapi semua itu bukanlah masalah karena tidak semua fasilitas accses point digunakan. Kata kunci: LAN nirkabel, FreeBSD, jaringan komputer.

PEMBUATAN APLIKASI SISTEM PENDAFTARAN PRAKTIKUM ONLINE PADA JURUSAN TEKNIK INFORMATIKA UNIVERSITAS KRISTEN PETRA DENGAN MENGGUNAKAN PHP

Jurnal Informatika Vol 4, No 1 (2003): MAY 2003
Publisher : Institute of Research and Community Outreach - Petra Christian University

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Abstract

With the improvement of internet technology, this research is about to make a laboratory work registry online system via web by using PHP and database server MySQL which will be replace old manual laboratory work registry. End user facilities that will provided such as entering password and user profile facility (My Profile), entering choosing scheduling facility (Registering Schedule), looking at accepting schedule facility (My Schedule), laboratory work grades facility (My Laboratory Transcript), and looking at laboratory schedule (Laboratory Schedule). From the result of this implementation system can be seen that total rejected student on Pendaftaran Praktikum I is 80 students or 15.7% from 509 students who have registered their laboratory work. Whereas in Pendaftaran Praktikum II that total rejected student is 51 students or 9.77% from 522 students who have registered their laboratory work. Abstract in Bahasa Indonesia : Dengan makin berkembangnya teknologi internet maka pada penelitian ini dilakukan pembuatan sistem pendaftaran praktikum secara online melalui web dengan menggunakan PHP dan database server MySQL yang akan menggantikan sistem lama yaitu secara manual. Fasilitas-fasilitas untuk end user yang diberikan antara lain adalah fasilitas pemasukkan password dan profile user (My Profile), fasilitas memasukkan pilihan jadwal (Registering Schedule), fasilitas untuk melihat pilihan jadwal yang telah diterima (My Schedule), fasilitas untuk melihat hasil nilai praktikum selama kuliah (My Laboratory Transcript), dan fasilitas untuk melihat jadwal laboratorium (Laboratory Schedule). Dari hasil implementasi sistem terlihat bahwa jumlah total mahasiswa yang tertolak pada masa Pendaftaran Praktikum I adalah 80 orang atau sebesar 15.7% dari total 509 orang mahasiswa yang mendaftarkan praktikumnya. Sedangkan pada masa Pendaftaran Praktikum II yang tertolak adalah sebesar 51 orang mahasiswa atau sebesar 9.77% dari total 522 orang mahasiswa yang mendaftarkan praktikumnya. Kata kunci: sistem pendaftaran online, PHP, praktikum.

Co-Authors Adi Wibowo Agnes Yustivani, Agnes Agus Santoso Agustinus Gandawidjaja Agustinus Noertjahyana Alexander Setiawan Alvin Assianto Leiman Anita Nathania Purbowo Anton Wahyudi Arif Priyata Setiawan, Arif Priyata Bernardo Taufiq Mangunwijaya, Bernardo Taufiq Caroline Indah Wijaya, Caroline Indah Christian Adiputra Christian Purnama Dennis Yuputra Permana Dian Christiani Linggadihardja, Dian Christiani Djoni H. Setiabudi Eddy Setyawan Edward Budiman Sutanto Eliezer Elbert Kristian, Eliezer Elbert Endhy, Kezia Tiatira Erwin Kristianto J. Erwin Lie Fendhy Ongko Fenny Valentine Budiono, Fenny Valentine Fenny Valentine, Fenny Fransisco Edo, Fransisco Frica Salim Wiharjo Fujianto - Go Ornella Aquaria Gregorius Satia Budhi Happy Setiawan Harry Timothy Tumalewa Henry Novianus Palit Ibnu Gunawan Irma Yunita Setiawati, Irma Yunita Iwan Setiawan Jaceline Wongsonegoro Jessica Florencia Johan Sutanto Joko Lianto Buliali Julius Wonodihardjo Justinus Andjarwirawan Karla Usmana Kartika Gunadi Kevin Alfian Santoso, Kevin Alfian Kristo Radion Purba Leo Willyanto Santoso Lewi S. Kristianto Lily Puspa Dewi M. Isa Irawan Magdalena Magdalena Michael Christian Wibisono Monika Irfanny Irfanny, Monika Irfanny Monika Irfanny Wongso, Monika Irfanny Osbert Tjitro Sampurna Oviliani Yenty Yuliana Rachma Yunita Resmana Lim Robby Adrian Joesoef Robby Christian, Robby Robert Gosal, Robert Rolly Intan Rosalina Rosalina Roy Otniel P. Rudy Adipranata Rufus Dian Oeinata Sandy Sunaryo Silvia Rostianingsih Sontama Baktiano Ibe, Sontama Baktiano Sri Maharsi Stephanie Soesatyo Sugeng Hadi Wijaya, Sugeng Hadi Sugianto Sukanto Tedjokusumo Sulistya Ferryanto, Sulistya Vianny Novita, Vianny Wahyu Christianto William Surya Wijaya Wiwie Yoanna Yan Ivan Handana Putra, Yan Ivan Handana Yoel Tanuwijaya, Yoel Yulia - Yulia . Yulia Yulia Yuliana Chandinegara Yulius Bastion, Yulius