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Twitter Sentiment Analysis using Na¨ive Bayes Classifier with Mutual Information Feature Selection Maria Arista Ulfa; Budi Irmawati; Ario Yudo Husodo
Journal of Computer Science and Informatics Engineering (J-Cosine) Vol 2 No 2 (2018): Desember 2018
Publisher : Informatics Engineering Dept., Faculty of Engineering, University of Mataram

Sentiment analysis is an identification technique of emotion expressed in texts. Thesentiment analysis goal is to determine a negative or positive opinion within a sentenceor a document. Twitter is one of social medias to convey an opinion. The twitter allowsits users to write opinions related to a specific topic in a tweet. The twitter data used inthis research was downloaded using the twitter Application Programming Interface (API).It consisted 500 tweets about Lombok tourism that contained #lombok and#woderfullombok hashtags. The features extracted from the twitter data were selectedusing the Mutual Information (MI) method then they were analyzed using the NaïveBayes Classifier (NBC) model. The evaluation of sentiment analysis on the Lomboktourism twitter data in a 10-folds cross validation resulted 97.9% accuracy.Key words : Sentiment Analysis, Twitter, Naïve Bayes Classifier, Mutual Information.

Design of creative thinking test in geometry based on information processing taxonomy model Hevy Risqi Maharani; Y L Sukestiyarno; St. Budi Waluya; Mulyono Mulyono
Beta: Jurnal Tadris Matematika Vol. 11 No. 2 (2018): Beta November
Publisher : Universitas Islam Negeri (UIN) Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20414/betajtm.v11i2.180

[English]: This paper describes how to develop a valid and reliable instrument for geometric creative thinking test based on the information processing taxonomy model. Using this model, geometry test can be classified in the level of creative thinking based on the information processing process of the mathematical knowledge they already have to solve problems according to the criteria at each hierarchical level. The development of the test instrument refers to Beyers (2011). A quantitative method was used to validate instruments through experts validation and instrument validation. The results showed that there was five geometry test that can be used to describe the student's creative thinking process at a different hierarchical level based on the information processing taxonomy. The results of this study can be a reference for teachers and other researchers to design mathematical test by paying attention to the hierarchical level of student's thinking abilities so that students with different abilities can solve problems which refer to their abilities. Keywords: Creative thinking,Geometry, Information processing taxonomy, Test design [Bahasa]: Artikel ini memaparkan tentang bagaimana menghasilkan instrumen yang valid dan reliabel untuk kemampuan berpikir kreatif geometris berdasarkan model taksonomi pemrosesan informasi. Dengan menggunakan model ini, soal geometri dapat diklasifikasikan dalam tingkatan berpikir kreatif siswa berdasarkan proses pengolahan informasi dari pengetahuan matematika yang telah mereka miliki untuk menyelesaikan masalah sesuai batas kriteria pada setiap tingkatannya. Pengembangan instrumen tes mengikuti langkah Beyers (2011). Metode kuantitatif digunakan untuk memvalidasi instrumen soal yang melalui tahap validasi ahli dan validasi instrumen. Hasil penelitian menunjukkan bahwa terdapat lima butir soal geometri yang dapat digunakan untuk mendeskripsikan proses berpikir kreatif siswa pada tingkatan hierarki yang berbeda berdasarkan model taksonomi pemrosesan informasi. Hasil penelitian ini dapat menjadi rujukan untuk guru maupun para peneliti lain untuk menyusun soal matematika dengan memperhatikan tingkatan hierarki kemampuan berpikir siswa agar siswa dengan berbagai kemampuan yang berbeda dapat mengerjakan soal sesuai dengan kemampuan yang mereka miliki. Kata kunci: Berpikir kreatif, Geometri, Taksonomi pemrosesan informasi, Desain tes

Asymmetric Information Mitigation in Supply Chain: A Systematic Literature Review Teniwut, Wellem Anselmus; Betaubun, Kamilius D; Marimin, Marimin; Djatna, Taufik
International Journal of Supply Chain Management Vol 7, No 5 (2018): International Journal of Supply Chain Management (IJSCM)
Publisher : International Journal of Supply Chain Management

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (13.161 KB)

With the level of competition and consumer demand is changing rapidly, the speed and accuracy of the information flow in the supply chain increasingly necessary. Sharing of information between the parties in a supply chain plays an important role in improving the sustainability of a business, but imperfection information is inevitable because each party in the supply chain has a different objective. This condition increases the importance of a research on the mitigation of asymmetric information in the supply chain, therefore the purpose of this study was to conduct a review of previous studies related to overcoming the asymmetric information and map research trend on mitigating asymmetric information in the supply chain. We used systematic literature review (SLR) methods to analyze the data collected from Web of Science and Scopus database from 2005 to 2016. The results of this study can be used as a guide and a reference for further research related to overcoming the asymmetry of information in the supply chain in every industrial sector. 

The Supply Chain Process of Environmental Information System in the Malaysian Manufacturing Industry Habidin, Nurul Fadly; Hudin, Norlaile Salleh; Md Zabit, Mohd Nazir; Fuzi, Nursyazwani Mohd; Ong, Sharon Yong Yee
International Journal of Supply Chain Management Vol 7, No 5 (2018): International Journal of Supply Chain Management (IJSCM)
Publisher : International Journal of Supply Chain Management

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (13.161 KB)

The purpose of this study is to examine the supply chain process of environmental information system and to develop the supply chain process of environmental information system in the Malaysian manufacturing industry. This study utilized the Statistical Package for Social Sciences Statistics software and Structural Equation Modelling to analyze statistical analysis. This study will used exploratory factor analysis and confirmatory factor analysis to identify the supply chain process of environmental information system and to develop the supply chain process of environmental information system in the Malaysian manufacturing industry. Data will be collected using a questionnaire survey from 2,700 manufacturing companies. Therefore, environmental information system can assist the organization to monitor, improve, and evaluate environmental management in the manufacturing industry.

The Influence of Institutional Policies and Information Technology Adoption towards Sustainable Logistics Transportation Nur Fadiah Mohd Zawawi; Sazali Abd Wahab; Suzana Idayu Wati Osman; Ahmad Shaharudin Abdul Latiff; Syed Ali Fazal
International Journal of Supply Chain Management Vol 7, No 5 (2018): International Journal of Supply Chain Management (IJSCM)
Publisher : International Journal of Supply Chain Management

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Logistics is the movement engine for cargos and merchandises both for domestics and international. People complete their business process through logistics transportation, especially to move cargos and merchandises reaching their end users around the world, hence transportation also can be considered as the backbone to business supply chain. Unfortunately, their operations produced negative impacts to our environment and society. Thus, business activities nowadays goes beyond sustaining economic sustainability solely. They are concern dearly on the environmental quality and human well-being as well. The objective of this paper is to review the influence of institutional policies and information technology (IT) adoption towards sustainable logistics transportations in the economic, environmental and social performance. Through understanding of Institutional Theory and Resource-Based View (RBV) Theory, institutional policies and IT adoption can be considered as the enabler for logistics performance and their sustainability. This paper expects to provide new insights to the logistics practitioners and policy makers in sustaining logistics sector in parallel with todays world demand, Sustainable Development Goals (SDGs).

A Proposed Guideline with Building Information Modelling (BIM) for Virtual Transformation of Traditional Housing to Green Housing Chen Kim Lim; Kian Lam Tan; Nguarije Hambira
International Journal of Supply Chain Management Vol 7, No 5 (2018): International Journal of Supply Chain Management (IJSCM)
Publisher : International Journal of Supply Chain Management

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Generally speaking, in search of alternative ways that is meant to prevent environment pollution and its sub hazard consequences, developers and planners as well as the masses nowadays are encouraged to use what is call a green home when building their houses. These types of houses typically use resources that are environmentally responsive. However, this new approach to house developments lacks clearly defined and globally accepted standards on what constitutes a green model. Thus, this research aims to educate the public about sustainable transformations from traditional homes to green homes by modelling the 3D model virtually to illustrate the differences between the conventional homes and green homes and its impact on the environment, and demonstrate the types of green alternatives available in Malaysia in order to construct the green homes. The ultimate goal is to create digitally a 3D model of the green homes through Building Information Modelling (BIM). BIM allows the public to run computer simulations that help to understand and visualise the evolutions of the traditional homes to green homes. The digital 3D model is effective in influencing and educating the residents about the benefits of green housing practices and ways to incorporate green building technologies.

The Effect of Auditor Competency and Work Experience on Information Systems Audit Quality and Supply Chain (Case Study: Indonesian Bank) Maya Sari, Nur Zeina; Susanto, Azhar
International Journal of Supply Chain Management Vol 7, No 5 (2018): International Journal of Supply Chain Management (IJSCM)
Publisher : International Journal of Supply Chain Management

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Abstract- The purpose of this study is to determine the effect of auditor competence and work experience on the information systems Audit quality and supply chain in the Indonesian X Bank. This research has been done in the Indonesian X Bank. The number of samples in this study is 30. The data collected through questionnaires. The multiple linear analysis techniques that previously tested for validity, reliability test, and classical assumption test such as normality test used as analytical techniques. Data analysis using SPSS version 23 program .The results of the study prove that: 1. Work Experience has a positive effect on information systems audit quality and supply chain at the Indonesian X Bank. 2. Competence Auditor positively influences to information systems Audit quality and supply chain at the Indonesian X Bank.   Keywords: Work Experience, Auditor Competence, Information Systems Audit quality, Supply Chain, Indonesian Bank

Effectiveness of ICTs in Dissemination of Agricultural Information among Farmers in Cauvery Delta, Thanjavur Aarthi Dhakshana Durairajan; Rajandran KVR
International Journal of Supply Chain Management Vol 7, No 5 (2018): International Journal of Supply Chain Management (IJSCM)
Publisher : International Journal of Supply Chain Management

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The role of ICT in Agriculture plays a new modern paradigm that facilitates and improves the agricultural sector. The ICT had rendered service to farmers for market access, announcement of weather condition, awareness of crop diseases etc. There are several types of the ICT tools used in agriculture sector such as Radio, Television, Mobile phones, Internet, Electronic money transfer etc. The ICT helps the farmers to understand the gap between productivity and market demand. The ICT, particularly the mobile technology has helped the farm producers in knowing internal commodity prices like agriculture produce. Thus ICT has been a big platform to the farm producer for their empowerment and enhancement. The ICTs assist the farmers to provide and manage the efficient supply chain of the agricultural products. This study attempted to known the impact various ICTs on productivity. The research also determines the factors influencing to refer the ICTs in agriculture. The study focused on to identify the problems faced by the farmers while access the ICTs. The research was conducted in Cauvery Delta Region, Thanjavur District. The data survey collected from 264 respondents by using simple random sampling technique. Regression, Descriptive Statistics and Factor analysis statistical tools were used to evaluate the data. The research findings have provided useful direction for the researcher and Practitioners for to develop future ICT based dissemination systems. Keywords - Agriculture, Awareness, ICT, Farmers, Preference, Retention.

Penerapan Central Event Information Untuk Mencetak Sertifikat dan Verifikasi Dengan QR Code Menggunakan Global Extreme Programming Untung Rahardja; Erick Febriyanto2; Much Alvin Aldiya
Jurnal Informatika Upgris Vol 4, No 2: Desember (2018)
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/jiu.v4i2.2843

A certificate is a document stating that someone has fulfilled certain requirements and can practice in a field. The certificate verification procedure in universities is still a lot done manually and sometimes does not verify the certificate. This results in many fake certificates. To overcome this problem, a website is created that utilizes the QR Code with the aim of quickly accessing data verification of a certificate. With QR Code scanning technology, paper-based document fraud can be easily carried out without high costs. Therefore, the design of information systems or the creation of web-based applications is a solution to provide convenience to users in the process of data processing, data retrieval to report generation. In making this application the author uses the Agile Software Development model with the Global Extreme Programming process model. While the tools used are UML (Unified Modeling Language) and ERD (Entity Relationship Diagram).

Classification of Heuristic Information by Using Machine Learning Algorithms KOKLU, Murat; SABANCI, Kadir; UNLERSEN, Muhammed Fahri
International Journal of Intelligent Systems and Applications in Engineering 2016: Special Issue
Publisher : Prof. Dr. Ismail SARITAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18201/ijisae.2016Special Issue-146984

The User Knowledge Modelling dataset in the UCI machine learning repository was used in this study. The students were classified into 4 class (very low, low, middle, and high) due to the 5 performance data in the dataset. 258 data of 403 data in the dataset were used for training and 145 of them were used for tests. The Weka (Waikato Environment for Knowledge Analysis) software was used for classification. In classification Multilayer Perceptron (MLP), k Nearest Neighbors (kNN), J48, NativeBayes, BayesNet, KStar, RBFNetwork and RBFClassifier machine learning algorithms were used and success rates and error rates were calculated. In this study 8 different data mining algorithm were used and the best classification success rate was obtained by MLP. With Multilayer perceptron neural network model the classification success rates was calculated when there are different number of neurons in the hidden layer of MLP. The best classification success rate was achieved as 97.2414% when there was 8 neurons in the hidden layer. MAE and RMSE values were obtained for this classification success rate as 0.0242 and 0.1094 respectively.

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