One of the problems related to population that still has to be faced by Simalungun is the problem of the imbalance in the distribution of the population. Incomplete division of the population brings problems to population density and population pressure in an area. This study uses data sources from the Central Statistics Agency (BPS) Simalungun. The data used in this study is data from 2015-2019 which consists of 32 Districts. Therefore, the researchers used the K-Means algorithm in clustering 32 sub-districts in Simalungun Regency. The data will be processed by clustering in 3 clusters, namely clusters with high population levels, clusters with moderate population levels and clusters with low population levels. The iteration process takes 5 times so that the results obtained are 4 sub-districts with high population level clusters (C1), 11 cluster sub-districts with moderate population level (C2) and 17 cluster sub-districts with low population level (C3)
CV. Kerinci Motor is a company engaged in the transportation and automotive sector, especially in the sale of motorcycles. The uncertainty in the number of motorcycle sales at this company has hampered the company's development, because the company cannot take definite policies regarding the sales that occur. Therefore, it is necessary to estimate the sales of motorcycles at this company in the future, so that the management can estimate consumer demand in the future. So that the company is able to serve and provide consumer demand. The estimation algorithm that will be used in this research is Multiple Linear Regression which is one of the data mining methods. This method was chosen because it is able to make an estimate by utilizing data regarding sales. The results of the estimated (estimated) sales of manual motorcycles in 2021 by January are 56,941 or 57 motorcycles in the manual category. This means that there is an increase in the number of manual motorbikes by 5 motorbikes, while the results until May 2021 amounted to 65,710 motorbikes. So it can be concluded that sales of motorcycles at CV. Kerinci Motor have increased sales in the next 5 months.
Water is one of the necessities that are needed by living things, especially humans. In everyday life, humans cannot be separated from the need for air. PDAM is a regional-owned business unit, which is engaged in the distribution of clean water for the general public. However, along the way, along with receiving complaints from the public or customers, public complaints about the increasing difficulty of getting clean water are still an obstacle that can be completely overcome, for example in the North Sumatra area, precisely in Gunung Malela District. On the one hand, public demand will increase, but the quality of services provided is not comparable to meeting the demands of the community. Therefore, this study was conducted to determine customer satisfaction with PDAM Tirta Lihou in Gunung Malela District. Many branches of computer science study various algorithms, one of which is data mining methods, DSS, ANN, and others. This study uses a data mining method with the C5.0 algorithm to solve the problem of factors that affect customer satisfaction with PDAM Tirta Lihou, Gunung Malela District
Penelitian ini bertujuan untuk mengetahui besar tingkat kepuasan konsumen terhadap produk roti Pinkan Bakery & Cake. Dengan mengetahui tingkat kepuasan konsumen, maka pihak toko dapat memperbaiki dan meningkatkan faktor kepuasan konsumen apabila ada kelemahan dan kekurangan. Metode yang digunakan dalam penelitian ini dengan data mining yaitu Algoritma C4.5, sumber data diambil dengan menggunakan angket/kuesioner pada tahap survei pengisian lembar kertas kepada pengunjung toko atau masyarakat sekitar di lingkungan Desa Bangun. Adapun variabel yang digunakan yaitu (1) Harga, (2) Rasa, (3) Kualitas Produk, (4) Kebersihan Tempat. Untuk memudahkan proses pembuatan pohon keputusan proses uji penelitian menggunakan software Rapidminer 5.3. Berdasarkan seluruh hasil tahapan penelitian yang telah dilakukan pada Penerapan Algoritma C4.5 pada analisis faktor Kepuasan Konsumen terhadap Produk Roti Pinkan Bakery and Cake dapat disimpulkan bahwa permasalahan menentukan faktor kepuasan konsumen terhadap produk Roti dapat diselesaikan menggunakan teknik data mining, yaitu dengan Algoritma C4.5. Menghasilkan 5 rules dan Tingkat akurasi yang dihasilkan oleh metode tersebut adalah 93%. Dari perhitungan dengan Algoritma C4.5 maka didapatkan faktor yang paling dominan adalah Rasa (C2) dengan nilai gain sebesar 0,333610402.
Presensi merupakan salah satu sistem yang digunakan untuk melatih kedisiplinan yang biasa digunakan oleh instansi bersifat formal. Banyak metode yang dapat diterapkan mulai dari cara manual dan sampai penggunaan alat elektronik. Pada analisa penelitian ini dilakukan observasi sistem presensi pada pegawai kantor pangulu sitalasari yang masih menggunakan cara manual. Dengan banyaknya kelemahan dari sisi pengawasan maka diusulkanlah penelitian ini untuk membuat sebuah alat berbasis arduino dalam melakukan presensi pegawai menggunakan sensor RFID RC522 serta sensor FPM10A. Pegawai yang melakukan scan kartu RFID atau Name Tag serta scan sidik jari pada sensor akan secara otomatis tersimpan di Microsoft Excel sebagai database. RFID RC522 membaca scan kartu dan yang terdapat sebuah chip di dalamnya serta penggunaan sensor FPM10A untuk membaca scan sidik jari pegawai. Prinsip kerja adalah pegawai meletakkan kartu RFID atau Name Tag di atas sensor RFID RC522 atau melakukan scan sidik jari pada sensor FPM10A kemudian dari alat ini nama, jam hadir, dan jam keluar pegawai akan secara otomatis terdeteksi di Microsoft Excel.
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