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Pengaruh Prediksi Missing Value pada Klasifikasi Decision Tree C4.5 Arifianto, Aji Seto; Dewi Safitri, Kursita; Agustianto, Khafidurrohman; Wiryawan, I Gede
Jurnal Teknologi Informasi dan Ilmu Komputer Vol 9 No 4: Agustus 2022
Publisher : Fakultas Ilmu Komputer, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25126/jtiik.2022944778

Abstract

Pendekatan klasifikasi data bersifat supervised learning menuntut adanya dataset yang lengkap. Permasalahan yang muncul adanya missing value yaitu hilangnya nilai suatu atribut yang diakibatkan kesalahan dalam pengumpulan data, kesalahan saat memasukkan data, dan ketidakmampuan responden untuk memberikan jawaban yang akurat. Penelitian ini melakukan uji coba pengembangan rule decision tree C4.5 untuk data penyakit ginjal kronis. Dataset terdiri dari 400 record, 24 atribut dan 1 kelas target. Karakteristik data yang digunakan meliputi 11 data bertipe numerik dan 14 data bertipe nominal. Jumlah data kelas positif penyakit ginjal kronis 250, sedangkan negatif ginjal kronis 150. Total data yang tidak lengkap (missing value) 1012 records. Perlakuan pertama dibangun rule dengan menghitung entropy dan gain pada 360 data training yang terdapat missing value diperoleh 21 rules. Kemudian pada perlakuan kedua diterapkan prediksi missing value menggunakan rumus mean dan modus sebelum pembetukan rule tree, didapatkan 24 rules. Mengukur akurasi kedua rules tree C4.5 dilakukan menguji 40 data test, hasilnya 90% untuk rule dengan missing value dan 95% untuk dataset yang telah diprediksi nilainya. AbstractThe supervised learning approach to data classification requires a complete dataset. The problem that arises was the existence of missing value, namely the loss of the value of an attribute due to errors in data collection, errors when entering data, and the inability of respondents to provide accurate answers. This study conducted a trial on the development of the C4.5 rule decision tree for chronic kidney disease data. The dataset consisted of 400 records, 24 attributes and 1 target class. The data characteristics included 11 numeric data and 14 nominal data types. The number of positive data for kidney disease was 250, while the number of negative for kidney disease was 150 and the total of missing value was 1012 records. The first treatment was building a rule by calculating the entropy and gain on 360 training data where missing value was obtained, it was 21 rules. Then in the second treatment, the prediction of missing value was applied using the mean and mode formula before the formation of the rule tree, obtained 24 rules. Researcher was measuring the accuracy of the two rules tree C4.5 is done by using 40 data-testing, the result is 90% for rules with missing value and 95% for datasets whose value has been predicted.
SENAM VITALISASI OTAK: UPAYA EFEKTIF MENGUATKAN FUNGSI KOGNITIF, MENURUNKAN HIPERTENSI DAN EMOSIONAL PADA LANSIA Wiratma, I Wayan; Maba, I Wayan; Wiryawan, I Gede; Vipriyanti, Nyoman Utari
Care : Jurnal Ilmiah Ilmu Kesehatan Vol 9, No 3 (2021): EDITION NOVEMBER 2021
Publisher : Universitas Tribhuwana Tunggadewi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/jc.v9i3.2304

Abstract

Aging is a life process characterized by decreased cognitive function. The decline in cognitive function will affect the health and quality of life of a person and their participation in society. One of the efforts to improve cognitive function is to do brain vitalizing exercises. Research Objectives: To determine the effectiveness of vitalizing brain exercise on cognitive function, hypertension and emotional. Research Methods This research design is included in the pre-experimental research design with one-group pretest-posttest design. This study used purposive sampling. The total population is 100 people and is strictly selected according to the inclusion criteria, namely seniors aged 60 years and over, seniors who are willing to be respondents, elderly people who are included in dementia sufferers, hypertension and emotional disturbances according to the interpretation of the mini mental state examination, blood pressure and geriatric depression scale, leaving 40 respondents. Interventions were carried out 24 times for 30 minutes in 8 weeks. The data were tested using a non-parametric statistical test, namely the Wilcoxon Rank Test. Results: the results of the mini mental state examination obtained p value = 0.00, meaning p 0.05 so that Ha is accepted and Ho is rejected, the hypothesis of the geriatric depression scale obtained p value = 0.00, meaning p 0.05 so that Ha is accepted and Ho is rejected, the hypothesis of hypertension is p = 0.000, meaning p 0.05 so that Ha is accepted and Ho is rejected Conclusion Brain vitalization exercise is effective to reduce cognitive function (dementia), hypertension and emotional mental disorders . Suggestion