Greetings and Thanks from the General Chair Foreword from Head of Department of Electrical Engineering,

TABLE OF CONTENTS

Cover

Greetings and Thanks from the General Chair

Foreword from Head of Department of Electrical Engineering,

Foreword from Dean, Faculty of Engineering

Organizing Committee

Steering Committee

Technical Program Committee

Keynote Speaker

’s

Biography

Conference Program

Keynote’s Papers

Author Index

KEYNOTE SPEAKERS

I-1

Multi-User MIMO Wireless System -From Theory to Chip Design

Prof. Hiroshi Ochi

1

I-2

Challenges and Opportunities in Designing Internet of Things

Prof. Dr. Trio Adiono

11

I-3

Role of Telecommunication Satellite in Indonesia

Adi Rahman Adiwoso

13

CIRCUITS AND SYSTEMS

CC1

Enhancement of DRAMs Performance using Resonant Tunneling Diode

Buffer

Ahmed LutfiElgreatly, Ahmed AhmedShaaban, El-Sayed M. El-Rabaie

14

CC2

Real-time SoC Architecture and Implementation of Variable Speech PDF

based Noise Cancellation System

Aditya Ferry Ardyanto, Idham Hafizh, Septian Gilang Permana Putra, Trio

Adiono

19

CC3

Application of Supervised Learning in Grain Dryer Technology

Recirculation Type Cooperated with Wireless Sensor Network

Sidiq Syamsul Hidayat, TotokPrasetyo, Amin Suharjono, Kurnianingsih,

Muhammad Anif

24

CC4

Design of Real-Time Gas Monitoring System Based-on Wireless Sensor

Networks for Merapi Volcano

B. Supriyo, S.S.Hidayat, A. Suharjono, M.Anif, Sorja Koesuma

28

CC5

ANFIS Application for Calculating Inverse Kinematics of Programmable

Universal Machine for Assembly (PUMA) Robot

Hugo Adeodatus Hendarto, Munadi, Joga Dharma Setiawan

33

CC6

MRC NN Controller for Arm Robot Manipulator

Hugo Adeodatus Hendarto, Munadi, Joga Dharma Setiawan

CC7

Development of Microcontroller-based Stereoscopic Camera Rig

Positioning System

Julian Ilham, Wan-Young Chung

44

CC8

Design of A Digital PI Controller for Room Temperature on Wireless

Sensor and Actuator Network (WSAN) System

Bambang Sugiarto, ElanDjaelani

50

CC9

Display and Interface of wireless EMG measurements

Kevin Eka Pramudita, F. Budi Setiawan, Siswanto

56

CC10

Accuracy Enhancement of Pickett Tunnelling Barrier Memristor Model

Ahmad A. Daoud, Ahmed A. Shaaban, Sherif M. Abuelenin

61

CC11

Data Fusion and Switching Function For UAV Quadrotor Navigation

System

Muhammad Faris, Adha Imam Cahyadi, Hanung Adi Nugroho

66

CC12

Data logger Management Software Design for Maintenance and Utility in

Remote

Devi Munandar, Djohar Syamsi

72

CC13

Investigation of Electrical Properties of NanofibrePolyaniline Synthesize

as Material for Sensor

Ngurah Ayu Ketut Umiati, Siti Nurrahmi, Kuwat Triyana, Kamsul Abraha

77

CC14

Reconfigurable Floating Point Adder

Vipin Gemini

81

CC15

HOVER POSITION CONTROL WITH FUZZY LOGIC

Nia Maharani Raharja ,Iswanto, Muhammad Faris, Adha Imam Cahyadi.

87

CC16

METHODOLOGY OF FUZZY LOGIC WITH MAMDANI FUZZI MODELS

APPLIED TO THE MICROCONTROLLER

Indra Sakti

91

CC17

Fall Detection System Using Accelerometer and Gyroscope Based on

Smartphone

Arkham Zahri Rakhman, Lukito Edi Nugroho, Widyawan, Kurnianingsih

97

CC18

Design and Implementation of Sensor Fusion for Inertia Measurement on

Flying Robot Case Study: Hexacopter

Huda Ubaya, Afdhal Akrom

103

CC19

Triple Band Bandpass Filter With Cascade Tri Section Stepped

Impedance Resonator

Gunawan Wibisono, Tierta Syafraditya

109

CC20

Temperature Response Analysis Based on Pulse Width Irradiation of

2.45 GHz Microwave Hyperthermia

Imam Santoso, Thomas Sri Widodo, Adhi Susanto, Maesadjie

Tjokronagoro

113

IMAGE PROCESSING AND MULTIMEDIA

IP1

Visual Object Tracking using Particle Clustering

Harindra Wisnu Pradhana

IP2

Selective Encryption of video MPEG use RSA Algorithm

Prati Hutari Gani, Maman Abdurohman

122

IP3

Analytical Hierarchy Process for Land Suitability Analysis

Rahmat Sholeh, Fahrul Agus, and Heliza Rahmania Hatta

127

IP4

Training Support for Pouring Task in Casting Process using Stereoscopic

Video See-through Display - Presentation of Molten Metal Flow

Simulation Based on Captured Task Motion

Kazuyo IWAMOTO, Hitoshi TOKUNAGA, Toshimitsu OKANE

131

IP5

Feature Extraction and Classification of Heart Sound based on

Autoregressive Power Spectral Density

Laurentius Kuncoro Probo Saputra, Hanung Adi Nugroho, Meirista

Wulandari

137

IP6

Smart-Meter based on current transient signal signature and constructive

backpropagation method

Mat Syai’in, M.F. Adiatmoko, Isa Rachman, L. Subiyanto, Koko Hutoro,

Ontoseno Penangsang, Adi Soeprijanto

142

IP7

AUTOMATIC DOORSTOP SAFETY SYSTEM BASED ON IMAGE

PROCESSING WITH WEBCAM AND SCANNER

Stanley Suryono Wibisono, Florentinus Budi Setiawan

148

IP8

Palmprint Identification for User Verification based on Line Detection and

Local Standard Deviation

Bagas Sakamulia Prakoso, Ivanna K. Timotius, Iwan Setyawan

153

IP9

Cerebellar Model Articulation Controller (CMAC) for Sequential Images

Coding

Muhamad Iradat Achmad, Hanung Adinugroho, Adhi Susanto

158

IP10

A Comparative Study on Signature Recognition

Ignatia Dhian Estu Karisma Ratri, Hanung Adi Nugroho, Teguh Bharata

Adji

165

IP11

Study of Environmental Condition Using Wavelet Decomposition Based

on Infrared Image

S. R. Sulistiyanti, M. Komarudin, L. Hakim, A. Yudamson

170

IP12

Very High Throughput WLAN System for Ultra HD 4K Video Streaming

Wahyul Amien Syafei, Masayuki Kurosaki, and Hiroshi Ochi

175

IP13

Iris Recognition Analysis Using Biorthogonal Wavelets Tranform for

Feature Extraction

R. Rizal Isnanto

181

INFORMATION AND COMPUTER TECHNOLOGIES

ICT1

The Development of 3D Educational Game to Maximize Children’s

Memory

Dania Eridani, Paulus Insap Santosa

187

ICT2

The Influence of Knowledge Management to Succesful Collaborative

Design

Yani Rahmawati, Christiono Utomo

ICT3

Knowledge and Protocol on Collaborative Design Selection

Christiono Utomo, Yani Rahmawati

198

ICT4

Mobile-Based Learning Design with Android Development Tools

Oky Dwi Nurhayati, Kurniawan Teguh M

202

ICT5

A mobile diabetes educational system for Fasting Type 2 Diabetes in

Saudi Arabia

Mohammed Alotaibi

207

ICT6

Aggressive Web Application Honeypot for Exposing Attackerâ€

ں

s Identity

Supeno Djanali, FX Arunanto, Baskoro Adi Pratomo, Abdurrazak Baihaqi,

Hudan Studiawan, Ary Mazharuddin Shiddiqi

211

ICT7

Adjustment Levels for Intelligent Tutoring System using Modified Items

Response Theory

Ika Widiastuti, Nurul Zainal Fanani

216

ICT8

Smile Recognition System based on Lip Corners Identification

Eduard Royce, Iwan Setyawan, Ivanna K. Timotius

221

ICT9

An Integrated Framework for Measuring Information System Success

Considering the Impact of Culture in Indonesia

Siti Mardiana

225

ICT10

Pre-Processing Optimization on Sound Detector Application AudiTion

(Android Based Supporting Media for the Deaf)

Gian Gautama, Imanuel Widjaja, Michael Aditya Sutiono, Jovan Anggara,

Hugeng

232

ICT11

EVALUATION OF DISTRIBUTION NETWORK RELIABILITY INDEX

USING LOOP RESTORATION SCHEME

Daniar Fahmi, Abdillah F. I., IGN Satriyadi Hernanda, Dimas Anton

Asfani

238

ICT12

Efficient Message Security Based Hyper Elliptic Curve Cryptosystem

(HECC) for Mobile Instant Messenger

Putra Wanda, Selo, Bimo Sunafri Hantono

244

ICT13

Application of Web-Based Information System in Production Process of

Batik Industry Design Division

Indah Soesanti

249

ICT14

Managing and Retrieval of Cultural Heritage Multimedia Collection Using

Ontology

Albaar Rubhasy, A.A.G. Yudhi Paramartha, Indra Budi, Zainal A.

Hasibuan

254

ICT15

Individual Decision Model for Urban Regional Land Planning

Agus Fahrul, Sumaryono, Subagyo Lambang, Ruchaemi Afif

259

ICT16

Enhancing Online Expert System Consultation Service with Short

Message Service Interface

Istiadi, Emma Budi Sulistiarini ,Guntur Dharma Putra

265

ICT17

Mobile Nutrition Recommendation System For 0-2 Year Infant

Ratih Nur Esti Anggraini, Siti Rochimah, Kessya Din Dalmi

ICT18

Comparison of Distance and Dissimilarity Measures for Clustering Data

with Mix Attribute Types

Hermawan Prasetyo, Ayu Purwarianti

275

ICT19

Determining E-commerce Adoption Level by SMEs in Indonesia Based

on Customer-Oriented Benefits

Evi Triandini, Daniel Siahaan, Arif Djunaidy

280

ICT20

Providing Information Sources Domain for Information Seeking Agent

From Organizing Knowledge

Istiadi, Lukito Edi Nugroho, Paulus Insap Santosa

285

ICT21

Decision Support System For Stock Trading Using Decision Tree

Technical Analysis Indicators and Its Sensitivity Profitability Analysis

F.X. Satriyo D. Nugroho, Teguh Bharata Adji, Silmi Fauziati

290

ICT22

Design Web Service Academic Information System Based Multiplatform

Meta Lara Pandini, Zainal Arifin and Dyna Marisa Khairina

296

ICT23

Effects of VANET's Attributes on Network Performance

Agung B. Prasetijo, Sami S. Alwakeel and Hesham A. Altwaijry

302

ICT24

Visualization of Condition Irrigation Building and Canal Using Web GIS

Application

Falahah, Defrin Karisia Ayuningtias

308

ICT25

Comparison of three back-propagation architectures for interactive

animal names utterance learning

Ajub Ajulian Zahra Macrina and Achmad Hidayatno

314

ICT26

WORK IN PROGRESS – OPEN EDUCATIO

N METRIC (OEM) :

DEVELOPING WEB-BASED METRIC TO MEASURE OPEN

EDUCATION SERVICES QUALITY

Priyogi B., Nan Cenka B. A., Paramartha A.A.G.Y. &Rubhasy A.

318

POWER SYSTEMS

PS1

Design and Implementation of Solar Power as Battery Charger Using

Incremental Conductance Current Control Method based on

dsPIC30F4012

Ahmad Musa, Leonardus H. Pratomo, Felix Y. Setiono

323

PS2

An Adaptive Neuro Fuzzy Inference System for Fault Detection in

Transformers by Analyzing Dissolved Gases

Ms. Alamuru Vani, Dr. Pessapaty Sree Rama Chandra Murthy

327

PS3

Optimal Power Flow based upon Genetic Algorithm deploying Optimum

Mutation and Elitism

M. Usman Aslam, Muhammad Usman Cheema, Muhammad Samran,

Muhammad Bilal Cheema

333

PS4

Design Analysis and Optimization of Ground Grid Mesh of Extra High

Voltage Substation Using an Intelligent Software

M. Usman Aslam, Muhammad Usman Cheema, Muhammad Samran,

Muhammad Bilal Cheema

PS5

Design and Simulation of Neural Network Predictive Controller

Pitch-Angle Permanent Magnetic Synchrounous Generator Wind Turbine

Variable Pitch System

Suyanto, Soedibyo, Aji Akbar Firdaus

345

PS6

Inverse Clarke Transformation based Control Method of a Three-Phase

Inverter for PV-Grid Systems

Slamet Riyadi

350

PS7

Control of a Single Phase Boost Inverter with the Combination of

Proportional Integrator and Hysteresis Controller

Felix Yustian Setiono

355

PS8

A Simple Three-phase Three-wire Voltage Disturbance Compensator

Hanny H. Tumbelaka

360

PS9

Analysis of Protection Failure Effect and Relay Coordination on Reliability

Index

I.G.N Satriyadi Hernanda, Evril N. Kartinisari, Dimas Anton Asfani, Daniar

Fahmi

365

PS10

Extreme Learning Machine Approach to Estimate Hourly Solar Radiation

On Horizontal Surface (PV) in Surabaya –East Java

Imam Abadi, Adi

Soeprijanto, Ali Musyafa’

370

PS11

Maximum Power Point Tracking Control for Stand-Alone Photovoltaic

System using Fuzzy Sliding Mode Control Maximum Power Point

Tracking Control for Stand-Alone Photovoltaic System using Fuzzy

Sliding Mode Control

Antonius Rajagukguk, Mochamad Ashari, Dedet Candra Riawan

375

PS12

The Influence of Meteorological Parameters under Tropical Condition on

Electricity Demand Characteristic: Indonesia Case Study

Yusri Syam Akil, Syafaruddin, Tajuddin Waris, A. A. Halik Lateko

381

PS13

Optimal Distribution Network Reconfiguration with Penetration of

Distributed Energy Resources

Ramadoni Syahputra, Imam Robandi, Mochamad Ashari

386

PS14

Maximum Power Point Tracking Photovoltaic Using Root Finding

Modified Bisection Algorithm

Soedibyo, Ciptian Weried Priananda, Muhammad Agil Haikal

392

PS15

Design of LLC Resonant Converter for Street Lamp Based On

Photovoltaic Power Source

Idreis Abdualgader , Eflita Yohana, Mochammad Facta

398

PS16

Power Loss Reduction Strategy of Distribution Network with Distributed

Generator Integration

Soedibyo, Mochamad Ashari, Ramadoni Syahputra

402

PS17

Double Dielectric Barrier Discharge Chamber for Ozone Generation

Mochammad Facta, Hermawan, Karnoto,Zainal Salam, Zolkafle Buntat

407

PS18

Leakage Current Characteristics at Different Shed of Epoxy Resin

Insulator under Rain Contaminants

Abdul Syakur, Hermawan

PS19

Transformer monitoring using harmonic current based on wavelet

transformation and probabilistic neural network (PNN)

Imam Wahyudi F., Wisnu Kuntjoro Adi, Ardyono Priyadi, Margo

Pujiantara, Mauridhi Hery P

417

TELECOMUNICATIONS

TE1

Data Rate of Connections Versus Packet Delivery of Wireless Mesh

Network with Hybrid Wireless Mesh Protocol and Optimized Link State

Routing Protocol

Alexander William Setiawan Putra, Antonius Suhartomo

422

TE2

Empirical Studies of Wireless Sensor Network Energy Consumption for

Designing RF Energy Harvesting

Eva Yovita Dwi Utami, Deddy Susilo, Budihardja Murtianta

427

TE3

Modulation Performance in Wireless Avionics Intra Communications

(WAIC)

Muhammad Suryanegara, Naufan Raharya

432

TE4

Implementation and Performance Analysis of Alamouti Algorithm for

MIMO 2أ

—

2 Using Wireless Open-Access Research Platform (WARP)

Rizadi Sasmita Darwis, Suwadi, Wirawan, Endroyono, Titiek Suryani,

Prasetiyono Hari Mukti

436

TE5

Period Information Deviation on the Segmental Sinusoidal Model

Florentinus Budi Setiawan

441

TE6

A Compact Dual-band Antenna Design using Meander-line Slots for

WiMAX Application in Indonesia

Prasetiyono Hari Mukti, Eko Setijadi, Nancy Ardelina

445

TE7

Design and Analysis of Dualband J-

Pole Antenna with Variation in “T”

Shape for Transceiver Radio Communication at VHF and UHF Band

Yoga Krismawardana, Yuli Christyono, Munawar A. Riyadi

449

TE8

Low Cost Implementation for Synchronization in Distributed Multi

Antenna Using USRP/GNU-Radio

Savitri Galih, Marc Hoffmann, Thomas Kaiser

455

TE9

Development of the First Indonesian S-Band Radar

Andrian Andaya Lestari,Oktanto Dedi Winarko, Herlinda Serliningtyas,

Deni Yulian

459

Enhancing Online Expert System Consultation

Service with Short Message Service Interface

Istiadi

1

, Emma Budi Sulistiarini

2 1

Department of Electrical Engineering 2

Department of Industrial Engineering Widyagama University of Malang

Malang, Indonesia

e-mail: {istiadi,emma_budi}@widyagama.ac.id

Guntur Dharma Putra

3 3

Department of Electrical Engineering & Information Technology

Universitas Gadjah Mada Yogyakarta, Indonesia e-mail: guntur.dharma@mail.ugm.ac.id

Abstract— Short message service (SMS) that has been widely used in various fields could potentially utilized for problem-solving consulting services that are based on expert system, so it takes a kind of application platform to implement this service. This paper proposes an expansion of online expert system services (web and wap based) by adding an application use SMS interface. Knowledge base of the expert system, which employs a decision tree approach, is expressed in the form of a database that can be accessed by the application interfaces, including SMS interface. According to the experiment results, the decision tree has been able to play a role directing the consultation mechanism from an initial question to reach a conclusion interactively. Thus, a problem-solving case that can be expressed in the decision tree allows the implementation of this system.

Keywords— expert system; database; SMS; decision tree

I. INTRODUCTION

SMS is basically a text-exchanging feature between mobile subscribers with a limited amount of characters [1]. Although the message is limited, SMS has been a communication media of public service, especially in developing countries, such as the disease prevention services [2], m-banking services [3,5,4,6], and the field of agriculture [7,8,9]. Compatibility of SMS service to various types device of mobile phones which continues to grow, making this service as one of more accessible communication media. Advantages of these services can be used for consulting services regarding the problems in the community which aided by computing technologies such as expert systems.

Expert System (ES) is a particular media that provides problem-solving service within a specific problem domain [10]. When problem domain involves people’s need, then this ES is supposed to be capable to extensively reach wider targeted users. The ES that have been developed utilizing web interface has been successfully giving several service access [11], however the existence of SMS feature in common mobile phone to be another potential alternative for ES implementation.

SMS is initially aimed for person-to-person messaging; this service has been widely employed for information service and broadcasting in a machine-to-person communication concept [1]. In fact, the machine involvement for this case is potential

for handling the textual data processing and giving information back to users as an auto reply system. This condition allows this media to be the interaction process. Thus, the mechanism is possible to be implemented in an ES as consulting system.

Development efforts of expert system using SMS has been carried out, such as cases of fish disease in [12] and field of crops in [13]. However, the system was developed for specific purposes. The breadth of potential use of SMS as consulting services should be an available platform that is more general to accommodate for resolving problems with an interactive mechanism.

This paper proposes the development of SMS interface application that refers to a particular ES’ knowledge base, which is represented in a database system in the previous work [2]. This service development is based on application interaction concept that employs question and answer (as request-response mechanism in client-server system) in an ES, which refers to a particular knowledge base. The SMS application software will be developed for handling message processing and replaying user’s request automatically.

II. RELATED WORK

An ES is basically a form of computing application, which works based on facts any rules accommodated on a knowledge base. The knowledge base mainly acts for representing knowledge extracted from experts and allows particular computer to do reasoning process in a particular problem domain [10].

Evolving communication technology allows a particular computer system to work from a local scale network to an Internet, which is highly potential for implementing ES. Like an online ES, for instance, web usage that allows an ES to be accessible by more users. However, this system costs more complex development [14]. An ES as online consultation media has to pay attention to the interaction aspects. The systems are supposed to be capable for dynamically generating interface for the users, including from consultation process until inference process [15].

The development of an ES using multiple online services requires several media to present knowledge representation, which is accessible by each interface applications. In [3],

2014 1st International Conference on Information Technology, Computer and Electrical Engineering (ICITACEE)

knowledge base is accommodated by using a database that will be accessed by web and WAP applications. This approach is likely to be carried out as this implements server side method, which is suitable for SMS.

A SMS based ES has been developed in [12] and [13], although those works are only specified for specific cases. In [12], expert system applications using SMS for fish disease cases with a case-based reasoning approach. While in [13], SMS based expert system use fuzzy approach to case of crops field. Both of these applications require particular design for the implementation because it uses some parameters that need to be considered analytically. While at the other cases it may take more general representation such as with decision tree approach. So the chances of its use will be more flexible.

As SMS offers a wide range for implementation, a SMS based ES is also applicable to be implemented for other particular cases. This paper proposes a general ES model, thus this model is applicable for any particular cases that are able to be represented using decision tree approach.

III. SYSTEM DESIGN

The system design is designed based on our previous work in [11], that was developing a web-based ES with web and WAP application for consultation application. The system was utilizing an arbitrary database for holding knowledge base representation. Therefore the system is accessible through web and WAP interfaces. The usage of the database also allows experts or knowledge engineers to carry out data entry or editing process through web interface. An expansion for SMS based consulting application is done by adding a software that will act as SMS server and gateway. Furthermore, explanations regarding system design will be divided into knowledge base representation and system architecture, which is expanded using SMS, based consulting application.

A. Database of Knowledge Base Representation

This ES will employ decision tree approach in knowledge base representation [11]. The decision tree approach itself is basically a collection of nodes that are connected each other. These nodes are categorized as root node, decision node, and leaf node. The root node represents first fact that will be an initial point where seeking process for identifying emerging symptoms is started. This identification will provide options to walk through other branches into other nodes, either decision node or leaf node. The decision node owns identical purposes with root node, but it is not located in the initial position. Leaf node is particularly a node that marks the ending position of a tree. This leaf node must be a decision that points to a particular solution.

Fig. 1. Example of a decision tree [16].

Representing knowledge base by using decision tree approach basically requires several definition processes. Firstly, defining a problem domain will be the main concern. Secondly, defining facts or symptoms that are probably appear in identification process as a decision node. Thirdly, defining inference as the diagnosis result of several facts or symptoms that appears as a leaf node. Fourthly, defining basic rule elements that are illustrate the relation between nodes as a decision tree representation.

Database model illustrated in relational diagram (Fig. 2.) is developed to represent above-mentioned knowledge base. The Database design consists of Case Table, Symptom Table, Diagnose Table, and Rule Table.

Fig. 2. Database design to store knowledge base representation.

Root node

Case table acts to keep problem domain definition data, which consists of Case Title fields and its explanation. Symptom Table is used for storing fact definitions as an identified symptom. This Symptom table holds question field for symptom identification and description field for the descriptions. Diagnose Table will act to store leaf node representations. That table will also store conclusion definitions or diagnosis results and suggestions data.

The decision tree structure representation will be stored in Rule Table. Several fields that are accommodated by Rule Table covers IsRootNode field as first stage initial identification data (to find out the existence of root or decision nodes), Identification_Question field as a storage for questions data regarding Symptom table, Answer_Description field to store options label data, Answer_Link field to store the link to an answer, either a link to next question or a link to a decision (diagnosis result), and IsANswerLeafNode field to store answer indication data, whether leaf node will stop or no.

B. Design of System Architecture

System architecture design (shown in Fig. 3.), which previously consisted of knowledge representation databases, development application, and consulting application for Web and WAP interfaces, will be expanded by using SMS application. This SMS application will provide a proper access to the data stored in database, accordingly SMS based consultation is possible to be built. The SMS application utilizes request-response communication concept in order to provide consulting application based on the knowledge base stored in database. Thus, this SMS application would be a particular interface for an ES consultation service.

The database, which stores knowledge representation, will act as the center of the proposed system. Knowledge engineers will be able to insert or edit existing knowledge base through

Web interface. Furthermore, consulting application can utilize the stored knowledge representation, based on access media type, to provide consultation services to the users. Each type of consulting application is supposed to own similar interpretation to the knowledge base representation. Fig. 4 illustrates the decision tree seeking algorithm as a knowledge base representation in flowchart diagram.

Fig. 4. Tracing algorithm in a decision tree. Fig. 3. An expanded Web and WAP based Expert System architecture using SMS consulting application.

Begin

Select a case

Start with query to root node of the selected case

Get a node as link of the answer

Is leaf node?

Show Conclusion of the selected leaf node Show multiple choice question which

nodes linked

End Yes

No

As seen in Fig. 4, the seeking process is started by choosing appropriate case as the problem domain. Then, identifying process is began from root node, which contains initial question. Each identification questions contains multiple choices with next node regarding to the selected answer. When the users answer a particular question, a node is obtained. If that is a leaf node, then the identifying process will reach a conclusion. Nevertheless, if the node is a decision node, then the identification process will continue by showing the next question. This identification process will take place step by step between decision node until the process reaches the leaf node. Based on this algorithm, each application can be developed by using its own programming language platform.

This SMS application is developed by using PHP language as the server side application. This application employs Gammu software as the SMS gateway that provides send-receive interface for text messages to the clients. The SMS gateway device will provide communication media to the mobile network that will be forwarded to the mobile subscriber.

IV. CASE EXAMPLE :DENGUE FEVER CONSULTING

Dengue fever disease had been a serious worldwide concern as seen in Dengue Map1, an effort to keep monitoring these disease incidents globally. Beside preventive efforts to prevent the spread of this disease, an effort to take proper actions when the symptoms occur is also required to be carried out. A well-known and easily accessible communication service like SMS is expected to be an appropriate consultation media to detect initial detection of this disease. Therefore, this paper employs dengue fever as a case example for case study.

Based on World Health Organization (WHO) agreement, the dengue fever levels of severities are classified into dengue without warning sign, dengue with warning sign, and severe dengue [9]. According to the classification, there are several symptoms and actions that are required to be performed. Based on that reference, this ES application is developed as a consultation application by identification process through question and answer regarding the possibly identified symptoms, so that a proper action can be easily determined.

Fig. 5. Suggested dengue case classification and levels of severity [9].

V. RESULT AND DISCUSION

Based on common ES concept, this chapter is focused to the development of knowledge base representation builder and SMS based consultation application. Several explanations about the development of knowledge base representation builder is mainly focused to decision tree construction mechanism, while explanation about SMS based consultation application is mainly given by consultation process mechanism.

A. A Web based Knowledge Base Representation Builder

Knowledge Base (KB) representation builder is a back-end control panel for the entire system. There, knowledge engineers are able to insert or edit existing KB remotely through a Web based application. Based on defined system design, some features are developed to insert case type data, symptoms, diagnosis types, and rule bases.

A particular case is defined to cover specified problem domain. Then, symptoms that are likely to occur and its diagnosis results are defined in that problem domain. Symptoms definition processes are followed by several questions to identify some facts that occur. Diagnosis result definition processes consist of conclusion statements and given solutions or suggestions. After symptoms and its possible diagnosis are defined, knowledge engineers are able to construct rule structure into a decision tree that consists of several linked nodes. Figure 6 illustrates an application form for constructing the rule base.

Fig. 6. Interface form for rule defining.

Fig. 6. is basically an application form to facilitate rule base construction using decision tree approach. Based on that approach, a symptom identification process is initially began with first question that represents root node. Every identification phase (question) will provide an alternative answer with a label as a particular branch. The answer branch can be aimed to further symptoms identification or a specific conclusion. Furthermore, appropriate answer link is supposed to be selected for completion.

After symptoms, diagnosis, and rule base definition are completely defined, the consultation service is ready to be used

1

http://www.healthmap.org/dengue/en/

by users. Consultation can be performed using available access media, either Web, WAP, or SMS interface.

B. SMS based Consulting Application

This application provides a service for users to perform a consultation using SMS communication. Consultation process will be performed using question and answer mechanism between the service application and users, right after the user has been registered.

Users are able to continue to consultation process immediately after finished the registration process and replied according to the given instruction. This experiment is carried out based on the following decision tree shown in Fig. 7.

Fig. 7. Case example of decision tree for experiment

Fig. 7. illustrates the decision tree of Dengue Fever consultation process. The model possesses 13 questions and six decisions in total. In this scenario, the experiment will test whether the developed system would give question and decision correctly according to the decision tree model. The desired path is Q1-Q3-Q4-Q6-Q7-Q8-Q9-Q10-D4.

Fig. 8. Consultation phase toward a conclusion.

Consultation process will begin with initial question from root node (Q1) as shown in Fig. 8. Each question will always be followed by answer options to reply. Users are required to simply reply the question by replying the message according to the given instruction. Consultation process will continue with appropriate questions according to the constructed decision tree model. The process will end up in a leaf node where a conclusion is drawn; in this case, the experiment reached D4 decision.

VI. CONCLUSION

Knowledge base of the expert system with decision tree approach is accommodated in a database that allows to be accessed by an applications interface, including SMS interface for consultation application. The consultation mechanism, by means question and answer can work as an auto reply system. The decision tree has been able to play a role to direct the consultation mechanism from an initial question on a root node until it finds a conclusion at a leaf node. Thus, this system is also capable in implement any other problem domains, if it can be expressed by a decision tree models.

ACKNOWLEDGMENT

The authors of this research would like to express their gratitude to Directorate General of Higher Education, Ministry of Education and Culture of Indonesia for giving the research grant to support this work in 2014.

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