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All Journal PITIN JOURNAL OF INFORMATION SYSTEM RESEARCH (JOSH) INFOKUM KLIK: Kajian Ilmiah Informatika dan Komputer
Mahdianta Pandia
STMIK Kristen Neumann Indonesia, Medan
Computer Science & IT Decision Sciences, Operations Research & Management

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Application of X-Means Method for Grouping Early Childhood Diseases Berti Sari Br Sembiring; Mahdianta Pandia; Natalina Br Sitepu
INFOKUM Vol. 10 No. 1 (2021): Desember, Data Mining, Image Processing, and artificial intelligence
Publisher : Sean Institute

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Abstract

Grouping can use clustering to group data based on the similarity between the data, so that the data with the closest resemblance is in one cluster while the different data is in another group. The X-Means algorithm is the development of K-Means. The weakness of X-Means is that in determining the distance matrix, the distance matrix is ​​an important factor that depends on the X-Means algorithm data set. The resulting distance matrix value will affect the performance of the algorithm. The results of the study are: testing with variations in the number of centroids (K) with values ​​of 2,3,4,5,6,7,8,9,10. The author concludes that the number of centroids 3 and 4 has a better iteration value compared to the number of centroids that are getting higher and lower based on the iris dataset with the jarax matrix Manhattan Distance. From the test results with the X-Means cluster point, calculate the Euclidean Distance distance with 100 iris data reaching the 9th iteration, while with 100 iris data by calculating the Manhattan Distance distance it reaches the 10th iteration. Meanwhile, in determining the cluster point using the X-Means method from 100 data iris reaches its 7th iteration.
PENGEMBANGAN APLIKASI TEST KEMAMPUAN PADA PENERIMAAN MAHASISWA BARU BERBASIS SMARTPHONE Mahdianta Pandia; Pengarapenta Bangun
PUBLIKASI ILMIAH TEKNOLOGI INFORMASI NEUMANN (PITIN) Volume 1 Nomor 1 Tahun 2016
Publisher : UPPM

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Abstract

Android is an operating system for mobile phones based on Linux. Android provides an open platform for developers through a wide range of mobile devices to create an application for use. Android is a computer code that open (open source) can be distributed so that developers new applications can make it. In this paper, the authors take advantage of Android for the design of an application that is used in the process Ability test STMIK Kristen Neumann Indonesia. With this application Ability Test students may have the ability and the speed of thought testing. Students acquire knowledge and the ability to manage the logic, concentration, memory and the ability in arithmetic. Application Ability Test is knowing also beneficial for Admin and lecturer, on what skills in new students to undergo the process of teaching in Christian Neumann STMIK Indonesia. This application is also very easy to use by all circles.
MENINGKATKAN KEAMANAN DATA KEUANGAN ENGAN METODE AES DI STMIK KRISTEN NEUMANN INDONESIA Mahdianta Pandia Pandia
PUBLIKASI ILMIAH TEKNOLOGI INFORMASI NEUMANN (PITIN) Volume 2 Nomor 1 Tahun 2017
Publisher : UPPM

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Abstract

At present, the data stored in the computer is no longer safe, therefore data must be secured. To ensure the security and integrity of a data, an encoding process is needed. Encryption is done when data will be sent. This process will convert an original data into confidential data that cannot be read. Meanwhile, the decryption process is carried out to return data that has been encoded into the original data, the original data will not be read by unauthorized parties. The AES method is used as the latest standard cryptographic algorithm. the previous algorithm is considered incapable of securing data, because the key length is small. The AES method is a cryptographic algorithm using the Rijndael algorithm that can encrypt and decrypt 256 bits of data blocks.
SISTEM MONITORING KEHADIRAN DOSEN DALAM PROSES BELAJAR MENGAJAR DI STMIK NEUMANN MEDAN B ERBASIS ANDROID Krismonika Br Sitepu; Mahdianta Pandia
PUBLIKASI ILMIAH TEKNOLOGI INFORMASI NEUMANN (PITIN) Volume 4 Nomor 2 Tahun 2019
Publisher : UPPM

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Abstract

Monitoring is the activity of assessing work patterns carried out by studying and observing anactivity carried out in accordance with the plan.The monitoring system is very important in allagencies, the monitoring system can help the parties involved in information retrieval or decisionmaking. Attendance is one of the most important things in an agency, therefore in an agency amonitoring system for attendance is very important to be implemented so that every employee whoworks in a particular institution will discipline time. Seeing the development of technology today,all humans want to do everything quickly, one that can be created to monitor attendance is to usean android application.Monitoring is the activity of assessing work patterns carried out by studyingand observing an activity carried out in accordance with the plan.
APLIKASI KOTAK SARAN MAHASISWA BERBASIS ANDROID PADA STMIK KRISTEN NEUMANN INDONESIA MEDAN Lidia Megawati Br Kembaren; Mahdianta Pandia
PUBLIKASI ILMIAH TEKNOLOGI INFORMASI NEUMANN (PITIN) Volume 4 Nomor 2 Tahun 2019
Publisher : UPPM

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Abstract

Good service quality in a university is one of the things expected by students. With the suggestionbox provided by STMIK Kristen Neumann Indonesia is one form to improve good service, butminimal students use the suggestion box because the criticisms and suggestions do not getimmediate response from the leadership, because the suggestion box is a one-way media. With theexisting problems and to take advantage of developments in information technology, the authorsbuild an Android-based student suggestion box application that can be directly responded by theleadership.
SISTEM INFORMASI WARTA JEMAAT GEREJA BATAK KARO PROTESTAN (GBKP) BERBASIS WEB Evi Florentina Br Ginting; Mahdianta Pandia
PUBLIKASI ILMIAH TEKNOLOGI INFORMASI NEUMANN (PITIN) Volume 5 Nomor 2 Tahun 2020
Publisher : UPPM

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Abstract

This Web-Based Gereja Batak Karo Protestan (GBKP) newslatter information system aims to accelerate and facilitate the congregration in obtaining congregational news information. All informatio n and data processing of the Web-based Gereja Batak Karo Protestan (GBKP) congregation is presented in a series of systems in the form of an online dynamic web and designed using the PHP programming language and the database used is MySQL. With this system, it can reduce errors in data processing, so that the information generated is faster and more accurate and services to the congregration will increase
EMPLOYEE POSITION MUTATIONS DECISION SUPPORT SYSTEM WITH AHP AND SAW METHODS Mahdianta Pandia; Berti Sari Br Sembiring; Friendly Friendly; Zakaria Sembiring
INFOKUM Vol. 10 No. 02 (2022): Juni, Data Mining, Image Processing, and artificial intelligence
Publisher : Sean Institute

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Abstract

Employees are important assets for every company, because they greatly influence many aspects of determining the success of the company's work. A company will be able to carry out all its business processes properly if all its employees can be well organized by the HR (Human Resources) section. Placement and utilization of resources in the right position is absolutely necessary. From the results of the study it can be concluded, among others: The application of a decision support system that is built can provide convenience and minimize errors that may occur in the process of determining employee positions. criteria for determining employee positions. The level of accuracy of the test results is 100%.
DECISION SUPPORT SYSTEM FOR PROVIDING WORK ALLOWANCES AND PUNISHMENTS TO EMPLOYEES USING THE AHP AND SMART METHOD Berti Sari Br Sembiring; Mahdianta Pandia; Fransisca Br Sebayang; Harianta Sembiring
INFOKUM Vol. 10 No. 02 (2022): Juni, Data Mining, Image Processing, and artificial intelligence
Publisher : Sean Institute

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Abstract

From the results of the study it can be concluded, among others: The decision support system that was built was very helpful to speed up data processing in decision making for the provision of work benefits and punishments to employees. The SMART method is a suitable method to be applied in decision making by sharing alternatives, especially determining the provision of work benefits and punishments to employees quickly and precisely. The level of accuracy of the test results using the SMART method is 100%. The decision support system application that is built is dynamic in terms of determining criteria and weighting. So, it can be changed according to the needs of the company in providing work benefits and punishments
DECISION SUPPORT SYSTEM APPLICATION FOR SELECTION OF SCHOLARSHIP RECIPIENTS USING MOORA METHOD Berti Sari Br Sembiring; Mahdianta Pandia; Devanta Abraham Tarigan
INFOKUM Vol. 10 No. 5 (2022): December, Computer and Communication
Publisher : Sean Institute

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Abstract

Scholarships can be said as funding that does not come from self-funding or parents, but is provided by the government, private companies, embassies, universities, educational or research institutions, or also from the office where one works because of one's achievements can be given the opportunity to increase resource capacity. human resources through education. As for the results of the research, it was obtained by students who received scholarships at STMIK Neumann with a value of 3.0665 ranking 1
Pemrosesan Query dan Pemeringkatan Hasil dalam Information Retrieval: Sebuah Kajian Literatur Roberto Kaban; Poltak Sihombing; Mahdianta Pandia; Purwanto Simamora
Journal of Information System Research (JOSH) Vol 4 No 3 (2023): April 2023
Publisher : Forum Kerjasama Pendidikan Tinggi (FKPT)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47065/josh.v4i3.2867

Abstract

In this study, we reviewed the literature on information retrieval starting from the basics of Information Retrieval (IR), components and future challenges. The purpose of this study is to observe techniques that have been used by previous researchers in IR, especially query processing and ranking of search results. We used a literature review method by identifying, reviewing, and observing techniques in IR based on the results of several previous studies. We collected more literature sources from the ACM Digital Library, Researchgate and MDPI. From this research, we found several IR models for searching relevant documents (information) and ranking accurate results, including EXplanaTion RAnking (EXTRA), Deep-QPP, ColBERT-PRF and UQSCM-RFD.
Co-Authors Berti Sari Br Sembiring Berti Sari Br Sembiring Berti Sari Br Sembiring Desi Margaretta Devanta Abraham Tarigan Evi Florentina Br Ginting Fransisca Br Sebayang Friendly Friendly Harianta Sembiring Harianta Sembiring Krismonika Br Sitepu Lidia Megawati Br Kembaren Natalina Br Sitepu Pengarapenta Bangun Poltak Sihombing Purwanto Simamora Roberto Kaban Zakaria Sembiring