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All Journal E-Jurnal Matematika JURNAL MATEMATIKA STATISTIKA DAN KOMPUTASI Jurnal Sains Matematika dan Statistika Format : Jurnal Imiah Teknik Informatika EIGEN MATHEMATICS JOURNAL International Journal of Engineering, Technology and Natural Sciences (IJETS) Abdimasku : Jurnal Pengabdian Masyarakat Jurnal Ilmu Komputer dan Informatika Jurnal Eurekamatika UPGRADE: Jurnal Pendidikan Teknologi Informasi Diophantine Journal of Mathematics and Its Applications
Moch Anjas Aprihartha
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Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Health Professions Industrial & Manufacturing Engineering Mathematics Social Sciences Other

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Journal : JURNAL MATEMATIKA STATISTIKA DAN KOMPUTASI

 1 
Model Machine Learning Stacking untuk Prediksi Pembatalan Pemesanan Hotel Jus Prasetya; Sefri Imanuel Fallo; Moch Anjas Aprihartha
Jurnal Matematika, Statistika dan Komputasi Vol. 20 No. 3 (2024): May 2024
Publisher : Department of Mathematics, Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/j.v20i3.32619

Abstract

The hotel prepares rooms and resources according to the room booking. Advance booking from customers is a relationship between customers and hotels that ensures price stability for customers to enjoy services. Cancellation of hotel bookings and inability to satisfy potential customers is a widespread and alarming problem that can increase hotel operating costs and affect customer satisfaction. Given that the impact on the hospitality industry can be very bad, predicting hotel cancellations can be a solution to help build an appropriate operational strategy. Method used in this research is stacking machine learning model. Stacking consists of two levels, where in this study level 0 (base learner) uses the Naive Bayes, Logistic Regression, and Gradient Boosting Machine algorithms while at level 1 (meta learner) uses the Random Forest algorithm. Accuracy value of the stacking model classification and the gradient boosting machine has the highest accuracy value of 0.87. Sensitivity value of the stacking model is 0.86 and is the highest sensitivity value which means that the stacking model classification is very precise in predicting consumers in canceling hotel reservations. Specificity value of the gradient boosting machine is 0.88 and is the highest specificity value, which means that the gradient boosting machine classification is very precise in predicting consumers who do not cancel hotel reservations. Naive bayes and logistic regression classifications have accuracy, sensitivity, specificity, precision values that are not high.  
Perbandingan Metode Klasifikasi dalam Memprediksi Penjualan Produk Ban Terlaris moch anjas aprihartha; Fitri Astutik; Nani Sulistianingsih
Jurnal Matematika, Statistika dan Komputasi Vol. 20 No. 3 (2024): May 2024
Publisher : Department of Mathematics, Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/j.v20i3.33187

Abstract

Data mining is a term to describe the process of moving through large databases in search of certain previously unknown patterns. In finding certain patterns, you need a supporting technique, called machine learning. Machine learning involves learning hidden patterns in data and further using patterns to classify or predict an event related to a problem. One of the problems can be solved with machine learning such as predicting the sales rate of tire products. This can help companies predict tire products that are selling well in the market. In producing an accurate prediction model, it will be compared with decision tree classification methods of CART, CART + Discrete Adaboost, and Naive Bayes applied to tire sales data by PT. Mitra Mekar Mandiri. The results of the study based on successive model performance evaluations are model Naive Bayes < model CART < model CART+Discrete Adaboost. The Discrete Adaboost model with a data proportion of 90:10 is the best model for predicting tire sales. The accuracy, sensitivity and specificity values for the model were 79.17%; 89.47%; and 68.84%. The AUC value is 0.8 which indicates the model is good
STUDI TENTANG IDENTIFIKASI JAMUR BERACUN DAN TIDAK BERACUN DENGAN ALGORITMA CART-LOGITBOOST moch anjas aprihartha; Zulhandi Putrawan; Dicky Zulhan; Fatma Ahardika Nurfaizal
Jurnal Matematika, Statistika dan Komputasi Vol. 21 No. 1 (2024): SEPTEMBER 2024
Publisher : Department of Mathematics, Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/j.v21i1.35072

Abstract

Mushrooms are one of the groups of living organisms in the fungal regnum which have umbrella-like body characteristics. The body consists of an upright part that functions as a rod to support the hood as well as a hood that is horizontal and rounded with different color variations. There are types of mushrooms that can be a food source for humans. Some types of mushrooms can be eaten or processed like other foods. Apart from that, some types of mushrooms are dangerous if consumed by humans because they are poisonous. Based on these problems, this study offers a new contribution in identifying types of poisonous and non-toxic mushrooms based on mushroom characteristics using the CART algorithm combined with the LogitBoost boosting algorithm. The aim of this research can be used as material for further studies in making tools that can effectively and accurately differentiate between poisonous and non-toxic types of mushrooms. This can help reduce cases of poisoning due to consumption of poisonous mushrooms. The data used is secondary data from public sources UCI Machine Learning Repository. Evaluation of model performance resulted in an accuracy of 98.79%; recall 98.70%; specificity 98.85%; precision 98.56%; F1-Score 98.63%, and AUC 0.9876. These results show that the model is very effective in detecting poisonous mushrooms and has minimal errors in classification.
Co-Authors Achmad Wahid Kurniawan Ahardika Nurfaizal, Fatma Akrom, Muhamad Alam, Taufik Nur Andrianza, Muhammad Rafly Ayu Pertiwi Azizah, Rahmatul Azzahro, Salwa Paramita Budi, Setyo Dicky Zulhan Fatma Ahardika Nurfaizal Fitri Astutik Hady Rasikhun Harun Al Azies Herowati, Wise Hidayat, Novianto Nur Husniyadi, M. Idham Idham Ignatius Moses Setiadi, De Rosal JUS PRASETYA Jus Prasetya Muhammad Naufal, Muhammad Muljono Muljono Nani Sulistianingsih Noor Ageng Setiyanto, Noor Ageng Nurfaizal, Fatma Ahardika Prabowo, Wahyu Aji Eko Prasetya, Jus Putrawan, Zulhandi Safitri, Aprilyani Nur Sefri Imanuel Fallo Sudibyo, Usman Supriadi Rustad T. Sutojo Trisnapradika, Gustina Alfa Zulhan , Dicky Zulhan, Dicky Zulhandi Putrawan