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All Journal International Journal of Electrical and Computer Engineering MATEMATIKA SAINS DAN MATEMATIKA JURNAL SISTEM INFORMASI BISNIS Jurnal Matematika Jurnal Statistika Universitas Muhammadiyah Semarang Jurnal Mahasiswa Pasca Sarjana Proceeding SENDI_U Prosiding SI MaNIs (Seminar Nasional Integrasi Matematika dan Nilai-Nilai Islami) JOIV : International Journal on Informatics Visualization Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) Journal of Information Technology and Computer Science (JOINTECS) Jurnal Matematika: MANTIK Jurnal Penelitian Pendidikan IPA (JPPIPA) Indonesian Journal of Artificial Intelligence and Data Mining BAREKENG: Jurnal Ilmu Matematika dan Terapan JTAM (Jurnal Teori dan Aplikasi Matematika) JURNAL INSTEK (Informatika Sains dan Teknologi) Gema Wiralodra Jurnal Ilmiah Matematika dan Pendidikan Matematika (JMP) Jurnal Teknik Informatika (JUTIF) Journal of Soft Computing Exploration International Journal of Social Service and Research Interdisciplinary Social Studies Jurnal Sosial dan Sains
Juwanda, Farikhin
Departemen Matematika FSM UNDIP
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Implementasi Model CCR Data Envelopment Analysis (DEA) Pada Pengukuran Efisiensi Keuangan Daerah Israwan, LM Fajar; Surarso, Bayu; Frikhin, Farikhin
JSINBIS (Jurnal Sistem Informasi Bisnis) Vol 6, No 1 (2016): Volume 6 Nomor 1 Tahun 2016
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (628.136 KB) | DOI: 10.21456/vol6iss1pp76-83

Abstract

Regional budget control system is implemented through an audit and evaluation to ensure that its implementation is in accordance with the plan that it can be efficiently and effectively used. Regional budget efficiency measurement then aims to measure the efficienty of budget use of each Regional Work Unit (SKPD) and to optimalize its use. The efficiency of Regional Work Unit is measured using CCR Data Envelopment Analysis (DEA) model with one input variable and eight output variables, in which this CCR DEA applies Linear Programming approach and evaluates relative efficiency of Decision Making Units (DMUs). The sample was in a total of sixteen DMUs. The result revealed that seven DMUs were efficient, in which their reference set was then used to optimalize the input and output variables of other inefficient DMUs. This result was validated through paired sample t-test, proving to meet the hypothesis of Ho -2,042 ≤ tcount ≤ 2,042 showing that CCR DEA can be used as a method to measure regional budget efficiency with accurate results.
Implementasi Metode AHP Dan Promethee Untuk Pemilihan Supplier Chamid, Ahmad Abdul; Surarso, Bayu; Farikhin, Farikhin
JSINBIS (Jurnal Sistem Informasi Bisnis) Vol 5, No 2 (2015): Volume 5 Nomor 2 Tahun 2015
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (607.087 KB) | DOI: 10.21456/vol5iss2pp128-136

Abstract

Selection of suppliers is one of the most important things to meet the needs of the company consistently and at an acceptable cost, decision support system used to select suppliers by identifying suppliers with the highest potential. The object of this study is the drug suppliers. In this study we use four criterias to select suppliers of drugs: drug completeness, price, time delivery, payment or loan term. AHP method is used to calculate the weight of each criterion based on the pharmacist assessment. The weight criterias of the AHP process result is used for the calculation of the alternatives rank. PROMETHEE method used to alternatives calculation analysis that produce alternatives rankings.
Pendekatan Clustering untuk Ekstraksi Pengetahuan pada Pembangunan Sistem Manajemen Pengetahuan Pulukadang, Dwinta Rahmallah; Mustafid, Mustafid; Farikhin, Farikhin
JSINBIS (Jurnal Sistem Informasi Bisnis) Vol 5, No 2 (2015): Volume 5 Nomor 2 Tahun 2015
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (727.231 KB) | DOI: 10.21456/vol5iss2pp79-83

Abstract

The importance of knowledge management in any organization encourages the development of a knowledge management system with features that can facilitate knowledge management processes such as storing, organizing, filtering, searching, and most important is the transfer of knowledge. The purpose of this researchis to develop a knowledge management system with a clustering approach for knowledge extraction by using a knowledge of publication writing. This study uses clustering k-means method which is used for cluster knowledge feature where at the same time can help the process of organizing, filtering, browsing and searching knowledge. The results of this research showed that the clustering k-means can be used for knowledge management system with the best value of purity= 0,8454 which is found by using k = 20. Clustering approach in the system again can help the process for knowledge searching based on knowledge cluster. This can be proved by carried out 15 times experiments which result in average level of accuracy (precision) about 89.13% and the average rate of completeness (recall)about 85.73 %.  
Studi Empiris Mengenai Penilaian Kinerja Jurusan di Bidang Penelitian Menggunakan Data Enevelopment Analysis (DEA) Farikhin, Farikhin; Noranita, Beta
JSINBIS (Jurnal Sistem Informasi Bisnis) Vol 3, No 3 (2013): Volume 3 Nomor 3 Tahun 2013
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21456/vol3iss3pp

Abstract

Performance evaluation of academic departments in university become routine activity to improve quality service.There qualitative and quantitative aspects to evaluate academic department. As well known that Data Envelopment Analysis (DEA) is one of non parametric technique based on linear programming. In this paper, we study to evaluate the academic departments with data envelopment analysis based on quantitative aspects. We formulate the performance evaluation as DEA problem. There are several stage to build DEA model as tool for the performance evaluation of academic departments. Firstly, we investigate purely quantitative variables in departement as input/output DEA model. Secondly, we discuss several ranking methods of decision making unit (DMU) to obtain efficiency of academic departments. In this paper, we use modified l1-norm method to rank DMU’s in DEA model. Keywords : DEA, DMU, and modified l1-norm method
PELABELAN TOTAL TRIMAGIC SISI TERURUT TITIK-a PADA BEBERAPA GRAF Aprilia, Maita; Soelistyo Utomo, Robertus Heri; Farikhin, Farikhin
MATEMATIKA Vol 20, No 2 (2017): JURNAL MATEMATIKA
Publisher : MATEMATIKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (367.1 KB)

Abstract

Given graph G with number of vertex p and number of edge q. In this paper, we discussed a-vertex consecutive edge trimagic total labeling for several graphs which contain Bistar and Cycle Graph.
Implementasi Metode ANP-PROMETHEE Untuk Pemilihan Supplier (Studi Kasus PT. Lamongan Marine Industry) Wicaksono, Mahad; Surarso, Bayu; Farikhin, Farikhin
JSINBIS (Jurnal Sistem Informasi Bisnis) Vol 10, No 1 (2020): Volume 10 Nomor 1 Tahun 2020
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (516.641 KB) | DOI: 10.21456/vol10iss1pp36-45

Abstract

The selection of suppliers is essential to minimize the cost of procuring raw materials for production. This research is important to do in order to increase company profits and ensure the smooth production process. This study aims to select suppliers of shipbuilding raw materials of PT. LMI based on the best ranking order using the ANP-PROMETHEE method implemented in a decision support system. The variables used are 16 sub criteria and 6 alternatives. The ANP-PROMETHEE method is used because of its advantages in handling multi-criteria assessment based on subjective assumptions from decision makers. Stages of the study began with the ANP method to get the importance of weight then proceed to the calculation with the PROMETHEE method to get an alternative ranking. The results of this study is an application as a Decision Support System (DSS) that can help make supplier selection based on predetermined criteria. From the results of the study it was concluded that the ANP-PROMETHEE method can be implemented and is the right solution for supplier selection, ANP handles the problem of multiple objective decision making so that objectivity is maintained, while PROMETHEE handles the multi attribute decision making problem. Other conclusions are obtained that the PROMETHEE calculation has a more significant influence in determining the final outcome of an alternative ranking than the ANP. An input of ANP value is needed with a long number interval so that the results of the calculation of the Consistency Ratio (CR) approach the CR threshold (0.1) so that the ANP has a significant influence in determining the final outcome of an alternative ranking. The CR number that was tested was 0.0629 and proved unable to change the alternative ranking final results, when the CR number that was tested was 0.0993, it was proven to be able to change the alternative ranking final results.
ANALISIS HUKUM PROGRESIF TERHADAP HUKUM INVESTASI DALAM UNDANG-UNDANG NO. 25 TAHUN 2007 DAN PERJANJIAN INTERNASIONAL Andraini, Fitika; Juwanda, Farikhin; Faozi, Safik
Proceeding SENDI_U 2016: SEMINAR NASIONAL MULTI DISIPLIN ILMU DAN CALL FOR PAPERS
Publisher : Proceeding SENDI_U

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Hukum investasi Indonesiayang berdasarkan Undang-undang No. 25Tahun 2007 tentang Penanaman Modaldirancang untuk menyesuaikan kebutuhan perdagangan dunia yang bersifat global dan liberal. Liberalisasi investasiyang didorong oleh kapitalisme internasional telah tertuang dalam Blue Print Economic Asean Community. Dalamperdagangan ekonomi global, liberalisasi investasi telah lama dirumuskan melalui perjanjian internasionalterbentuknya organisasi perdagangan dunia (WTO) dan GATT (General Agreement Trade and Tariffs), GATS(General Agreement Trade and Services), TRIPS (Trade Relates Aspect of Intelectual Property Rights), TRIMS(Trade Relates Aspect of Investment Measures). Ratifikasi Indonesia terhadap perjanjian WTO melalui UndangundangNomor 7 tahun 1994 secara yuridis formal Indonesia telah menundukkan diri pada persetuan PutaranUrugay dan ratifikasi perjanjian WTO telah masuk ke dalam sistem hukum nasional. Adanya norma-norma hukuminvestasi ini menyisakan persoalan terhadap perwujudan kesejahteraan masyarakat. Secara hukum progresif, hukummodern yang berwatak liberal dirancang tidak mewujudkan keadilan sosial, melainkan menjamin adanya kepastianliberalisai investasi dan perdagangan dunia. Permasalahan yang diajukan bagaimana Korelasi ide-ide dasar, doktrindoktrinHukum Invetasi dalam Undang-undang Nomor 25Tahun 2007 dengan Perjanjian Multilateral dalamKomunitas Ekonomi Asean di bidang Investasi? Bagaimana Analisis Hukum Progresif terhadap KeberadaanInvetasi dalam Undang-undang Nomor 25Tahun 2007 dengan Perjanjian Multilateral dalam Komunitas EkonomiAsean di bidang Investasi? Tujuan penelitian ini mendeskripsikan korelasi ide-ide dasar, doktrin-doktrin hukuminvetasi dalam Undang-undang Nomor 25Tahun 2007 dengan Perjanjian Multilateral dalam Komunitas EkonomiAsean di bidang Investasi, dan mendeskripsikan Analisis Hukum Progresif terhadap Keberadaan Invetasi dalamUndang-undang Nomor 25Tahun 2007 dengan Perjanjian Multilateral dalam Komunitas Ekonomi Asean di bidangInvestasi.Metode penelitian yuridis-normatif. Jenis data yang digunakan data sekunder yang berupa Undang-undangNo. 25 Tahun 2007 dan Perjanjian Internasional terkait investasi. Analisis datanya bersifa deskripif-kualitatif.Hasil penelitian mengungkapkan bahwa ada korelasi ide, doktrin hukum, asas hukum investasi yangtermaktub dalam Undang-undang No.25 Tahun 2007 dengan doktrin-doktrin dan asas hukum dalam perjanjianinternasional yang termuat dalam Blueprint Asean Economic Community di bidang investasi. Di dalamnyaditentukan liberalisasi investasi yang terhubung dengan dokumen dalam WTO, GATT, GTS, dan TRIMS. AnalisisHukum Progresif mengungkapkan bahwa doktrin liberalisasi investasi dikonsruksi oleh hukum modern yangberwatak liberal. Tidak diancang untukmewujudkan keadilan rakyat melainkan hanya menjamin kepastian adanyaliberaliasi investasi di Indonesia dan kawasan ASEAN.Kata Kunci : Hukum Progresif, Invetasi, UU No. 25Tahun 2007, Perjanjian Internasional
Optimisation towards Latent Dirichlet Allocation: Its Topic Number and Collapsed Gibbs Sampling Inference Process Bambang Subeno; Retno Kusumaningrum; Farikhin Farikhin
International Journal of Electrical and Computer Engineering (IJECE) Vol 8, No 5: October 2018
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (325.186 KB) | DOI: 10.11591/ijece.v8i5.pp3204-3213

Abstract

Latent Dirichlet Allocation (LDA) is a probability model for grouping hidden topics in documents by the number of predefined topics. If conducted incorrectly, determining the amount of K topics will result in limited word correlation with topics. Too large or too small number of K topics causes inaccuracies in grouping topics in the formation of training models. This study aims to determine the optimal number of corpus topics in the LDA method using the maximum likelihood and Minimum Description Length (MDL) approach. The experimental process uses Indonesian news articles with the number of documents at 25, 50, 90, and 600; in each document, the numbers of words are 3898, 7760, 13005, and 4365. The results show that the maximum likelihood and MDL approach result in the same number of optimal topics. The optimal number of topics is influenced by alpha and beta parameters. In addition, the number of documents does not affect the computation times but the number of words does. Computational times for each of those datasets are 2.9721, 6.49637, 13.2967, and 3.7152 seconds. The optimisation model has resulted in many LDA topics as a classification model. This experiment shows that the highest average accuracy is 61% with alpha 0.1 and beta 0.001.
Counter Example: The Algorithm of Determinant of Centrosymmteric Matrix based on Lower Hessenberg Form Nur Khasanah; Farikhin Farikhin
Jurnal Matematika MANTIK Vol. 6 No. 1 (2020): Mathematics and Applied Mathematics
Publisher : Mathematics Department, Faculty of Science and Technology, UIN Sunan Ampel Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (272.081 KB) | DOI: 10.15642/mantik.2020.6.1.20-29

Abstract

The algorithm for computing determinant of centrosymmetric matrix has been evaluated before. This algorithm shows the efficient computational determinant process on centrosymmetric matrix by working on block matrix only. One of block matrix at centrosymmetric matrix appearing on this algorithm is lower Hessenberg form. However, the other block matrices may possibly appear as block matrix for centrosymmetric matrix’s determinant. Therefore, this study is aimed to show the possible block matrices at centrosymmetric matrix and how the algorithm solve the centrosymmetric matrix’s determinant. Some numerical examples for different cases of block matrices on determinant of centrosymmetric matrix are given also. These examples are useful for more understanding for applying the algorithm with different cases.
PERAMALAN FUNGSI TRANSFER SINGLE INPUT INDEKS HARGA SAHAM GABUNGAN TERHADAP SAHAM NEGARA TERDEKAT Sri Wahyuni; Farikhin -; Iswahyudi Joko Suprayitno
Jurnal Statistika Universitas Muhammadiyah Semarang Vol 2, No 2 (2014): Jurnal Statistika Universitas Muhammadiyah Semarang
Publisher : Department Statistics, Faculty Mathematics and Natural Science, UNIMUS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (432.31 KB) | DOI: 10.26714/jsunimus.2.2.2014.%p

Abstract

Peramalan Indeks Harga Saham Gabungan (IHSG) dapat digunakan untuk mengurangi resiko dari suatu pengambilan kebijakan ekonomi Indonesia. Kuala Lumpur Stock Exchange (KLSE) sebagai variabel yang mempengaruhi IHSG dengan korelasi 93,4%. Kedekatan antara IHSG dan KLSE karena negara yang berdekatan biasanya memiliki investor yang sama. Penggunaan metode fungsi transfer single input dengan data Februari 2005 sampai November 2010 menghasilkan model [1,3,5]1[1,3] dan b,r,s (0,0,0) serta menghasilkan ramalan 66 bulan kemudian. Ramalan yang dihasilkan dapat dijadikan acuan sampai Mei 2016 dengan Mean Absolute Prosentation Error (MAPE) selama 12 bulan sebesar 3,25.
Co-Authors A. Haris A. Rusgiyono Acep Irham Gufroni Adi Ariyo Munandar Adi Suliantoro Ahmad Abdul Chamid Ahmad Lubis Ghozali Aprilia, Maita Aris Sugiharto Arnelli Arnelli B. Raharjo Bambang Irawanto Bambang Irawanto Bambang Subeno Bayu Surarso Bayu Surarso Beta Noranita Bibit Waluyo Aji Budi Warsito Carolin Carolin Catur Edi Widodo D. Ispriyanti Didik Setiyo Widodo Dinar Mutiara Kusumo Nugraheni Djuwandi Djuwandi DONNY IRAWAN MUSTABA Dwinta Rahmallah Pulukadang, Dwinta Rahmallah E. Setiawati Erikha Feriyanto Erlin Dwi Endarwati, Erlin Dwi Esti Wijayanti, Esti F. Ariyanto Faozi, Safik Fauzi, Irza Nur Feriyanto, Erikha Ferry Jie, Ferry Fitika Andraini H. Sutanto Heny Maslahah, Heny I. Marhaendrajaya Iswahyudi Joko Suprayitno J. E. Suseno Kartono . Keszya Wabang Kusworo Kusworo Laily Rahmania, Laily LM Fajar Israwan, LM Fajar M. Izzati M. Nur Madani, Faiq Mansur Mansur Meryta Febrilian Fatimah, Meryta Febrilian Mustafid Mustafid Neza Zhevira Septiani Nikken Prima Puspita Nikken Prima Puspita Nur Khasanah Oky Dwi Nurhayati Pangestika, Vidya Dwi Pradana, Fadli Dony Prantiastio Prastio, Wahyu Tedi Priyono Priyono Purwanto Purwanto R. Hariyati R. Hastuti Rachmat Gernowo Ratri Wulandari Retno Kusumaningrum Rezki Kurniati, Rezki Rinta Kridalukmana Robertus Heri Sulistyo Utomo S. Tana Safik Faozi, Safik Satriani, Rineka Brylian Akbar Siti Khabibah Siti Khabibah Sri Wahyuni Sugito Sugito Suhartono Suhartono Sunarsih . Suparti Suparti T. Windarti Titi Udjiani SRRM Toni Prahasto Udjiani , Titi Udjiani S.R.R.M, Titi Usman, Carissa Devina Uswatun Khasanah W. H. Rahmanto Wardani, Novita Koes Wardianto, Wardianto Warsito , Budi Wicaksono, Mahad Wyne Mumtaazah Putri Yosza Dasril Yully Estiningsih Z. Muhlisin