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All Journal Prosiding University Research Colloquium Journal Medical Informatics Technology
Irmawati, I
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Humanities Computer Science & IT Dentistry Engineering Environmental Science Law, Crime, Criminology & Criminal Justice Medicine & Pharmacology Public Health

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Predictive Modeling of Osteoporosis Risk Factors using XGBoost and Bagging Ensemble Technique Irmawati, I; Herdit Juningsih, Eka; Yanto, Y
Journal Medical Informatics Technology Volume 2 No. 1, March 2024
Publisher : SAFE-Network

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37034/medinftech.v2i1.27

Abstract

This study presents a predictive modeling framework for osteoporosis risk assessment using ensemble techniques, specifically XGBoost and Bagging. Leveraging a dataset comprising comprehensive health factors influencing osteoporosis development, including demographic details, lifestyle choices, medical history, and bone health indicators, the aim is to facilitate accurate identification of individuals at risk. The dataset consists of 1958 samples, evenly distributed between osteoporosis-positive and osteoporosis-negative cases. The methodology involves the separation of features and labels, followed by data splitting into training and testing sets. XGBoost, a powerful gradient boosting algorithm, is employed as the base estimator within a Bagging ensemble, enhancing predictive accuracy and generalization. The model is trained on the training set and evaluated using cross-validation techniques to ensure robustness and mitigate overfitting. The results of the classification report demonstrate promising performance metrics, with an overall accuracy of 88% on the test set. Precision and recall scores indicate strong predictive capabilities, particularly in correctly identifying osteoporosis-positive cases. The novel integration of XGBoost within a Bagging ensemble provides an innovative approach to osteoporosis risk prediction, harnessing the strengths of both algorithms to improve model performance. This research contributes to the advancement of osteoporosis management and prevention strategies by providing a reliable tool for early risk assessment. The combination of machine learning techniques with comprehensive health data offers a valuable approach to personalized healthcare, enabling targeted interventions and optimized resource allocation. Ultimately, this study aims to enhance patient outcomes and reduce the burden of osteoporosis-related morbidity and mortality.
Analisis Pengaruh Interest rate, Kurs Dan Inflasi Terhadap Harga Saham Perusahaan Sub Sektor Perkebunan yang Terdaftar di BEI Tahun 2017-2019 Irmawati, I; Puspitasari, Anggun
Prosiding University Research Colloquium Proceeding of The 14th University Research Colloquium 2021: Bidang Ekonomi dan Bisnis
Publisher : Konsorsium Lembaga Penelitian dan Pengabdian kepada Masyarakat Perguruan Tinggi Muhammadiyah 'Aisyiyah (PTMA) Koordinator Wilayah Jawa Tengah - DIY

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Abstract

Penelitian ini bertujuan untuk menganalisis (1) pengaruh Interest rate terhadap Harga Saham, (2) Pengaruh Kurs terhadap Harga Saham, (3) Pengaruh Inflasi terhadap Harga Saham. Penelitian bersifat kuantitatif, dengan populasi seluruh perusahaan perkebunan yang terdaftar di BEI tahun 2017-2019. Sampel berjumlah 16 perusahaan dengan menggunakan teknik purposive sampling. Menggunakan teknik dokumentasi dan pengolahan data menggunakan eviews 9. Hasil penelitian ini menunjukan bahwa Interest rate berpengaruh negatif dan signifikan terhadap Harga Saham, Kurs berpengaruh positif dan signifikan terhadap Harga Saham, dan Inflasi berpengaruh negatif dan signifikan terhadap harga saham.
Pengaruh Gaya Kepemimpinan, Motivasi Kerja terhadap Kinerja Karyawan melalui Keterlibatan Karyawan sebagai Variabel Mediasi di PT. Sunwoo Garment Indonesia Pangestika, Pramudi; Irmawati, I
Prosiding University Research Colloquium Proceeding of The 15th University Research Colloquium 2022: Mahasiswa (Student Paper Presentation) A
Publisher : Konsorsium Lembaga Penelitian dan Pengabdian kepada Masyarakat Perguruan Tinggi Muhammadiyah 'Aisyiyah (PTMA) Koordinator Wilayah Jawa Tengah - DIY

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Abstract

This study discusses how leadership style and work motivation affect employee performance through employee involvement as a mediating variable at PT. Sunwoo Garment Indonesia. The purpose of this study was to examine and analyze the effect of leadership style, work motivation on employee performance through employee involvement as a mediating variable at PT. Sunwoo Garment Indonesia. The sampling technique used is the non probability sampling technique with a total of 100 respondents who are employees at PT. Sunwoo Garment Indonesia. The analytical test tool used is SmartPLS. The results of this study indicate that leadership style has a positive and insignificant effect on employee performance, leadership style has a positive and significant effect on employee engagement, work motivation has a negatif and insignificant effect on employee performance, work motivation has a positive and significant effect on employee engagement, employee engagement has a positive and significant impact on employee performance. significant on employee performance, leadership style on employee performance with employee involvement as a mediating variable shows a significant positive relationship, work motivation on employee performance with employee involvement as a mediating variable shows a significant positive relationship.
Peran Kepuasan Konsumen dalam Memediasi Pengaruh Green Marketing dan Corporate Social Responsibility terhadap Loyalitas Konsumen Starbucks Irmawati, I; Sandy, Bagas Arkanta Naufal
Prosiding University Research Colloquium Proceeding of The 16th University Research Colloquium 2022: Bidang Sosial Ekonomi dan Psikologi
Publisher : Konsorsium Lembaga Penelitian dan Pengabdian kepada Masyarakat Perguruan Tinggi Muhammadiyah 'Aisyiyah (PTMA) Koordinator Wilayah Jawa Tengah - DIY

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Abstract

This study aims to analyze and discuss the effect of green marketing and corporate social responsibility on consumer loyalty with consumer satisfaction as a mediating variable for Starbucks products. The population in this study is the consumer community of Starbucks products in the city of Surakarta through a sample of 170 respondents. Data collection techniques by distributing questionnaires. Data analysis in this study using Smartt PLS version 3.0. The technique used in the sampling of this research uses the purposive sampling technique and the technique in testing the data used in this study includes an external model consisting of convergent validity, discriminant validity, composite reliability, Cronbach alpha, and multicollinearity test as well as an internal model consisting of coefficients. determination, goods of fit, effect size test (f2), and hypothesis testing. The results in this study indicate that green marketing has a significant effect on consumer satisfaction, CSR has a significant effect on consumer satisfaction, consumer satisfaction has a significant effect on consumer loyalty, green marketing has a significant effect on consumer loyalty, CSR has a significant effect on consumer loyalty, consumer satisfaction plays a mediating role between green marketing on consumer loyalty, consumer satisfaction does not play a mediating role between CSR and consumer loyalty.
PENGARUH KUALITAS PRODUK, BRAND AWARENESS, DAN IKLAN TERHADAP MINAT BELI ULANG PRODUK POCARI SWEAT Irmawati, I; Fadhilah, Nisrina Hasna
Prosiding University Research Colloquium Proceeding of The 19th University Research Colloquium 2024: Bidang Sosial, Ekonomi dan Psikologi
Publisher : Konsorsium Lembaga Penelitian dan Pengabdian kepada Masyarakat Perguruan Tinggi Muhammadiyah 'Aisyiyah (PTMA) Koordinator Wilayah Jawa Tengah - DIY

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Abstract

Penelitian ini bertujuan untuk menganalisis pengaruh kualitas produk, brand awareness, dan iklan terhadap minat beli ulang. Responden dalam penelitian ini sebanyak 100 responden yang dilakukan melalui sebaran kuesioner dengan google form. Teknik pengambilan sampel dengan menggunakan teknik purposive sampling. Uji Outer model meliputi pengujian validitas dan reliabilitas menggunakan aplikasi SmartPLS. Uji Inner Model berupa pengujian hipotesis menggunakan aplikasi SmartPLS. Hasil analisis menunjukan bahwa kualitas berpengaruh positif signifikan pada minat beli ulang, produk brand awareness berpengaruh positif signifikan pada minat beli ulang, dan iklan berpengaruh positif signifikan terhadap minat beli ulang. Hasil nilai original sample menunjukan variabel iklan merupakan variabel yang paling berpengaruh besar terhadap minat beli ulang.
Co-Authors Eka Herdit Juningsih Fadhilah, Nisrina Hasna Pangestika, Pramudi Puspitasari, Anggun Sandy, Bagas Arkanta Naufal Yanto, Y