<mets:mets OBJID="eprint_32149" LABEL="Eprints Item" xsi:schemaLocation="http://www.loc.gov/METS/ http://www.loc.gov/standards/mets/mets.xsd http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-3.xsd" xmlns:mets="http://www.loc.gov/METS/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><mets:metsHdr CREATEDATE="2026-07-21T07:09:23Z"><mets:agent ROLE="CUSTODIAN" TYPE="ORGANIZATION"><mets:name>EPrints Universitas Amikom Yogyakarta</mets:name></mets:agent></mets:metsHdr><mets:dmdSec ID="DMD_eprint_32149_mods"><mets:mdWrap MDTYPE="MODS"><mets:xmlData><mods:titleInfo><mods:title>EVALUASI RELIABILITAS MODEL XGBOOST&#13;
MENGGUNAKAN METODE HYBRID CALIBRATION&#13;
ENSEMBLE PADA DATASET PEMASARAN BANK</mods:title></mods:titleInfo><mods:name type="personal"><mods:namePart type="given">Hannif Nursukma</mods:namePart><mods:namePart type="family">Alkahfy</mods:namePart><mods:role><mods:roleTerm type="text">author</mods:roleTerm></mods:role></mods:name><mods:abstract>Permasalahan utama dalam pemanfaatan algoritma machine learning pada &#13;
bidang pemasaran bank adalah rendahnya reliabilitas probabilitas prediksi,&#13;
khususnya pada dataset yang tidak seimbang. Model XGBoost yang umum&#13;
digunakan cenderung menghasilkan probabilitas yang tidak merepresentasikan&#13;
peluang kejadian aktual secara akurat atau mengalami miscalibration. Kondisi ini&#13;
berdampak pada kualitas pengambilan keputusan berbasis risiko, seperti penentuan&#13;
prioritas nasabah dalam kampanye pemasaran, yang berpotensi menimbulkan&#13;
inefisiensi dan kesalahan strategi bisnis. &#13;
Penelitian ini bertujuan untuk mengatasi permasalahan miscalibration&#13;
tersebut melalui penerapan Hybrid Calibration Ensemble pada model XGBoost.&#13;
Metode yang digunakan meliputi tahapan pra-pemrosesan data, pelatihan model&#13;
XGBoost baseline, pemisahan data menjadi data pelatihan, kalibrasi, dan pengujian,&#13;
serta penerapan metode kalibrasi Platt Scaling, Isotonic Regression, dan Beta&#13;
Calibration. Selanjutnya, hasil dari masing-masing metode kalibrasi digabungkan&#13;
dalam suatu skema ensemble untuk menghasilkan probabilitas akhir yang lebih&#13;
reliabel. Evaluasi kinerja dilakukan menggunakan metrik Brier Score dan analisis&#13;
reliability diagram. &#13;
Hasil penelitian menunjukkan bahwa model XGBoost baseline mengalami&#13;
miscalibration yang signifikan. Metode kalibrasi tunggal mampu memperbaiki&#13;
reliabilitas probabilitas, namun peningkatannya masih terbatas. Hybrid Calibration&#13;
Ensemble menghasilkan performa terbaik dengan nilai Brier Score terendah dan&#13;
kurva reliability diagram yang paling mendekati garis ideal. Penelitian ini&#13;
memberikan kontribusi dalam peningkatan kejujuran probabilitas model machine&#13;
learning dan dapat dimanfaatkan oleh praktisi perbankan, analis data, serta&#13;
pengambil keputusan dalam sistem pemasaran berbasis risiko. Penelitian&#13;
selanjutnya dapat mengembangkan pendekatan ini pada skenario multi-kelas atau&#13;
data dengan perubahan distribusi.</mods:abstract><mods:classification authority="lcc">000 Ilmu komputer, informasi dan pekerjaan umum</mods:classification><mods:classification authority="lcc">004 Pemrosesan data dan ilmu komputer</mods:classification><mods:originInfo><mods:dateIssued encoding="iso8061">2026-02-21</mods:dateIssued></mods:originInfo><mods:originInfo><mods:publisher>Universitas AMIKOM Yogyakarta;Fakultas Ilmu Komputer</mods:publisher></mods:originInfo><mods:genre>Thesis</mods:genre></mets:xmlData></mets:mdWrap></mets:dmdSec><mets:amdSec ID="TMD_eprint_32149"><mets:rightsMD ID="rights_eprint_32149_mods"><mets:mdWrap MDTYPE="MODS"><mets:xmlData><mods:useAndReproduction>
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