Garuda - Garba Rujukan Digital

Article Per Year (5 Year)

All

Jurnal Ilmu Komputer dan Informasi

JIKI
Website

Published by Universitas Indonesia

ISSN : 20887051 EISSN : 25029274 DOI : 10.21609

Core Subject : Science,

Computer Science & IT

Jurnal Ilmu Komputer dan Informasi is a scientific journal in computer science and information containing the scientific literature on studies of pure and applied research in computer science and information and public review of the development of theory, method and applied sciences related to the subject. Jurnal Ilmu Komputer dan Informasi is published by Faculty of Computer Science Universitas Indonesia. Editors invite researchers, practitioners, and students to write scientific developments in fields related to computer science and information. Jurnal Ilmu Komputer dan Informasi is issued 2 (two) times a year in February and June. This journal contains research articles and scientific studies. It can be obtained directly through the Library of the Faculty of Computer Science Universitas Indonesia.

Arjuna Subject : -

Articles 194 Documents

1 2 3 4 5

Identifying Medicinal Plant Leaves using Textures and Optimal Colour Spaces Channel C H Arun; D Christopher Durairaj
Jurnal Ilmu Komputer dan Informasi Vol 10, No 1 (2017): Jurnal Ilmu Komputer dan Informasi (Journal of Computer Science and Information
Publisher : Faculty of Computer Science - Universitas Indonesia

This paper presents an automated medicinal plant leaf identification system. The Colour Texture analysis of the leaves is done using the statistical, the Grey Tone Spatial Dependency Matrix(GTSDM) and the Local Binary Pattern(LBP) based features with 20 different colour spaces(RGB, XYZ, CMY, YIQ, YUV, $YC_{b}C_{r}$, YES, $U^{*}V^{*}W^{*}$, $L^{*}a^{*}b^{*}$, $L^{*}u^{*}v^{*}$, lms, $l\alpha\beta$, $I_{1} I_{2} I_{3}$, HSV, HSI, IHLS, IHS, TSL, LSLM and KLT). Classification of the medicinal plant is carried out with 70\% of the dataset in training set and 30\% in the test set. The classification performance is analysed with Stochastic Gradient Descent(SGD), kNearest Neighbour(kNN), Support Vector Machines based on Radial basis function kernel(SVM-RBF), Linear Discriminant Analysis(LDA) and Quadratic Discriminant Analysis(QDA) classifiers. Results of classification on a dataset of 250 leaf images belonging to five different species of plants show the identification rate of 98.7 \%. The results certainly show better identification due to the use of YUV, $L^{*}a^{*}b^{*}$ and HSV colour spaces.

INFORMATION RETRIEVAL OF TEXT DOCUMENT WITH WEIGHTING TF-IDF AND LCS Munjiah Nur Saadah; Rigga Widar Atmagi; Dyah S. Rahayu; Agus Zainal Arifin
Jurnal Ilmu Komputer dan Informasi Vol 6, No 1 (2013): Jurnal Ilmu Komputer dan Informasi (Journal of Computer Science and Information)
Publisher : Faculty of Computer Science - Universitas Indonesia

Information retrieval of text document requires a method that is able to restore a number of documents that have high relevance according to the user's request. One important step in the process is a text representation of the weighting process. The use of LCS in Tf-Idf weighting adjustments considers the appearance of the same order of words between the query and the text in the document. There is a very long document but irrelevant cause weight produced is not able to represent the value relevance of documents. This research proposes the use of LCS which gives weight to the word order by considering long documents related to the average length of documents in the corpus. This method is able to return a text document effectively. Additional features of word order by normalizing the ratio of the overall length of the document to the documents in the corpus generate values of precision and recall as well as the method of Tasi et al.

BUILDING MONITORING SYSTEM BASED ON ZIGBEE Firdaus Kurniawan; Hira Meidia
Jurnal Ilmu Komputer dan Informasi Vol 6, No 2 (2013): Jurnal Ilmu Komputer dan Informasi (Journal of Computer Science and Information)
Publisher : Faculty of Computer Science - Universitas Indonesia

This paper presents the building monitoring system that can determine the building condition in real time and ensure the safety of building operations. This monitoring building system can detect the ambient, CO gas, fan, water leak, and also intrusion detectors, through a wired sensor network. Then the data is processed by a main controller to generate a report that sent to the inspectors through ZigBee and / or sound an alarm if the situation is considered dangerous. Prototype of this monitoring system shows precision and stability with minimal error rate. Main controller can receive data from the sensor network properly and send it through ZigBee modules.

METODE EKSTRAKSI FITUR PADA PENGKLASIFIKASIAN DATA MICROARRAY BERBASIS INFORMASI PASANGAN GEN Rully Soelaiman; Sheila Agustianty; Yudhi Purwananto; I.K. Eddy Purnama
Jurnal Ilmu Komputer dan Informasi Vol 2, No 1 (2009): Jurnal Ilmu Komputer dan Informasi (Journal of Computer Science and Information)
Publisher : Faculty of Computer Science - Universitas Indonesia

Pengenalan teknologi DNA microarray membuat perolehan data microarray menjadi lebih mudah. Hal ini semakin memicu persoalan tentang bagaimana cara terbaik dalam mengekstraksi dan memilih fitur dari data yang berdimensi besar tersebut. Metode-metode terdahulu mengabaikan adanya hubungan antargen sehingga memungkinkan hilangnya informasi penting yang tersimpan dalam suatu gen pada saat ekstraksi fitur. Meskipun berbagai macam metode telah digunakan, pengembangan metode ekstraksi dan seleksi fitur dari data microarray yang lebih powerful dan efisien masih diperlukan untuk meningkatkan performa klasifikasi kanker. Dalam penelitian ini diimplementasikan sebuah metode dalam melakukan ekstraksi fitur dari data microarray yang memanfaatkan model klasifikasi berbasis informasi pasangan gen, yaitu pasangan gen yang memiliki perbedaan signifikan pada dua jenis sampel tissue. Hasil uji coba terhadap dua data microarray menunjukkan bahwa fitur hasil ekstraksi menggunakan metode ini dapat meningkatkan performa klasifikasi. Bahkan akurasi 100% dapat diperoleh pada uji coba terhadap data lymphoma.

COMPARISON OF IMAGE ENHANCEMENT METHODS FOR CHROMOSOME KARYOTYPE IMAGE ENHANCEMENT Dewa Made Sri Arsa; Grafika Jati; Agung Santoso; Rafli Filano; Nurul Hanifah; Muhammad Febrian Rachmadi
Jurnal Ilmu Komputer dan Informasi Vol 10, No 1 (2017): Jurnal Ilmu Komputer dan Informasi (Journal of Computer Science and Information
Publisher : Faculty of Computer Science - Universitas Indonesia

The chromosome is a set of DNA structure that carry information about our life. The information can be obtained through Karyotyping. The process requires a clear image so the chromosome can be evaluate well. Preprocessing have to be done on chromosome images that is image enhancement. The process starts with image background removing. The image will be cleaned background color. The next step is image enhancement. This paper compares several methods for image enhancement. We evaluate some method in image enhancement like Histogram Equalization (HE), Contrast-limiting Adaptive Histogram Equalization (CLAHE), Histogram Equalization with 3D Block Matching (HE+BM3D), and basic image enhancement, unsharp masking. We examine and discuss the best method for enhancing chromosome image. Therefore, to evaluate the methods, the original image was manipulated by the addition of some noise and blur. Peak Signal-to-noise Ratio (PSNR) and Structural Similarity Index (SSIM) are used to examine method performance. The output of enhancement method will be compared with result of Professional software for karyotyping analysis named Ikaros MetasystemT M . Based on experimental results, HE+BM3D method gets a stable result on both scenario noised and blur image.

USER EMOTION IDENTIFICATION IN TWITTER USING SPECIFIC FEATURES: HASHTAG, EMOJI, EMOTICON, AND ADJECTIVE TERM Yuita Arum Sari; Evy Kamilah Ratnasari; Siti Mutrofin; Agus Zainal Arifin
Jurnal Ilmu Komputer dan Informasi Vol 7, No 1 (2014): Jurnal Ilmu Komputer dan Informasi (Journal of Computer Science and Information)
Publisher : Faculty of Computer Science - Universitas Indonesia

Abstract Twitter is a social media application, which can give a sign for identifying user emotion. Identification of user emotion can be utilized in commercial domain, health, politic, and security problems. The problem of emotion identification in twit is the unstructured short text messages which lead the difficulty to figure out main features. In this paper, we propose a new framework for identifying the tendency of user emotions using specific features, i.e. hashtag, emoji, emoticon, and adjective term. Preprocessing is applied in the first phase, and then user emotions are identified by means of classification method using kNN. The proposed method can achieve good results, near ground truth, with accuracy of 92%.

DETEKSI OOV MENGGUNAKAN HASIL PENGENALAN SUARA OTOMATIS UNTUK BAHASA INDONESIA Aswin Juari; Ayu Purwarianti
Jurnal Ilmu Komputer dan Informasi Vol 2, No 2 (2009): Jurnal Ilmu Komputer dan Informasi (Journal of Computer Science and Information)
Publisher : Faculty of Computer Science - Universitas Indonesia

Paper ini menjelaskan tentang implementasi pengenalan OOV (Out of Vocabulary) words pada Aplikasi Pengenal Suara Berbahasa Indonesia. Pengenalan OOV words penting karena masalah ini tidak dapat diselesaikan dengan menambah ukuran kamus. Untuk mengimplementasi pengenalan OOV words, dilakukan transduksi fonem ke kata. Klasifikasi kata-kata diberikan dengan melihat model bahasa dan probabilitas perubahan fonem untuk menentukan bagian yang termasuk OOV words. Pada paper ini juga dilakukan evaluasi terhadap beberapa jenis kamus yang digunakan pada sistem pengenal suara. Modifikasi pada kamus sistem pengenal bahasa Indonesia menghasilkan peningkatan sekitar 4% sedangkan hasil deteksi akurasi OOV sebesar sekitar 77%.

A GOAL QUESTION METRIC (GQM) APPROACH FOR EVALUATING INTERACTION DESIGN PATTERNS IN DRAWING GAMES FOR PRESCHOOL CHILDREN Dana Sulistiyo Kusumo; Mira Kania Sabariah; Kemas Rahmat Saleh Wiharja
Jurnal Ilmu Komputer dan Informasi Vol 10, No 2 (2017): Jurnal Ilmu Komputer dan Informasi (Journal of Computer Science and Information
Publisher : Faculty of Computer Science - Universitas Indonesia

In recent years, there has been an increasing interest to use smart devices’ drawing games for educational benefit. In Indonesia, our government classifies children age four to six years old as preschool children. Not all preschool children can use drawing games easily. Further, drawing games may not fulfill all Indonesia's preschool children’s drawing competencies. This research proposes to use Goal-Question Metric (GQM) to investigate and evaluate interaction design patterns of preschool children in order to achieve the drawing competencies for preschool children in two drawing Android-based games: Belajar Menggambar (in English: Learn to Draw) and Coret: Belajar Menggambar (in English: Scratch: Learn to Draw). We collected data from nine students of a preschool children education in a user research. The results show that GQM can assist to evaluate interaction design patterns in achieving the drawing competencies. Our approach can also yield interaction design patterns by comparing interaction design patterns in two drawing games used.

MACULAR EDEMA CLASSIFICATION USING SELF-ORGANIZING MAP AND GENERALIZED LEARNING VECTOR QUANTIZATION Rizal Adi Saputra; Yuwanda Purnamasari Pasrun; Amaliya Nurani Basyarah
Jurnal Ilmu Komputer dan Informasi Vol 7, No 2 (2014): Jurnal Ilmu Komputer dan Informasi (Journal of Computer Science and Information)
Publisher : Faculty of Computer Science - Universitas Indonesia

Abstract Macular edema is a kind of human sight disease as a result of advanced stage of diabetic retinopathy. It affects the central vision of patients and in severe cases lead to blindness. However, it is still difficult to diagnose the grade of macular edema quickly and accurately even by the medical doctor's skill. This paper proposes a new method to classify fundus images of diabetics by combining Self-Organizing Maps (SOM) and Generalized Vector Quantization (GLVQ) that will produce optimal weight in grading macular edema disease class. The proposed method consists of two learning phases. In the first phase, SOM is used to obtain the optimal weight based on dataset and random weight input. The second phase, GLVQ is used as main method to train data based on optimal weight gained from SOM. Final weights from GLVQ are used in fundus image classification. Experimental result shows that the proposed method is good for classification, with accuracy, sensitivity, and specificity at 80%, 100%, and 60%, respectively.

METODE LOKALISASI ROBOT OTONOM DENGAN MENGGUNAKAN ADOPSI ALGORITMA HEURISTIC SEARCHING DAN PRUNING UNTUK PEMBANGUNAN PETA PADA KASUS SEARCH-AND-SAFE Wisnu Jatmiko; M. S. Alvissalim; A. Febrian; Dhiemas R. Y.S.
Jurnal Ilmu Komputer dan Informasi Vol 2, No 2 (2009): Jurnal Ilmu Komputer dan Informasi (Journal of Computer Science and Information)
Publisher : Faculty of Computer Science - Universitas Indonesia

Permasalahan search-and-safe merupakan salah satu contoh robot otonom dapat disimulasikan untuk menggantikan pekerjaan manusia di lingkungan berbahaya, misalnya pada kegiatan evakuasi manusia dari ruang tertutup yang terbakar. Dalam contoh ini, robot otonom harus dapat menemukan objek manusia untuk diselamatkan, serta objek api untuk dipadamkan. Lebih jauh lagi, untuk dapat menyelesaikan permasalahan seperti ini dengan baik, robot otonom harus dapat mengetahui keberadaannya, bukan hanya posisi dalam sistem koordinat global saja tetapi juga posisi relatif terhadap posisi tujuan dan keadaan lingkungan itu sendiri. Permasalahan ini kemudian dikenal juga sebagai lokalisasi yang menjadi bagian penting dari proses navigasi pada robot otonom. Salah satu metode yang dapat digunakan untuk menyelesaikan permasalahan lokalisasi adalah dengan menggunakan representasi internal peta lingkungan kerja dalam pengetahuan robot otonom. Pada kondisi ketika tidak tersedia informasi mengenai konfigurasi lingkungan, atau informasi yang tersedia sifatnya terbatas, robot harus dapat membangun sendiri representasi petanya dengan dibantu oleh komponen sensor yang dimilikinya. Pada paper ini kemudian dibahas salah satu metode yang dapat diterapkan dalam proses pembangunan peta seperti yang dijelaskan, yaitu melalui adopsi algoritma heuristic searching dan pruning yang sudah dikenal pada bidang kecerdasan buatan. Selain itu juga akan dijabarkan desain robot otonom yang digunakan, serta konfigurasi lingkungan yang digunakan pada studi kasus search-and-safe ini. Diharapkan nantinya hasil yang diperoleh dari penelitian ini dapat diterapkan untuk skala yang lebih besar.

Page 1 of 20 | Total Record : 194

1 2 3 4 5

Filter by Year

2009 2022

Filter By Issues

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name
Qurrotin Ayunina

Contact Email
qurrotinayunina@gmail.com

Phone
-

Journal Mail Official
jiki@cs.ui.ac.id

Editorial Address
"Faculty of Computer Science Universitas Indonesia Kampus Baru UI Depok - 16424"

Location
Kota depok,

Jawa barat

INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Qurrotin Ayunina

Contact Email qurrotinayunina@gmail.com

Phone -

Journal Mail Official jiki@cs.ui.ac.id

Editorial Address "Faculty of Computer Science Universitas Indonesia Kampus Baru UI Depok - 16424"

Location Kota depok, Jawa barat INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
Qurrotin Ayunina

Contact Email
qurrotinayunina@gmail.com

Phone
-

Journal Mail Official
jiki@cs.ui.ac.id

Editorial Address
"Faculty of Computer Science Universitas Indonesia Kampus Baru UI Depok - 16424"

Location
Kota depok,

Jawa barat

INDONESIA