Keberhasilan layanan minimarket tidak terlepas dari tingkat kepuasan pelanggan yang diterima selama proses pelayanan. Pengukuran kepuasan pelanggan umumnya dilakukan melalui survei atau kuesioner yang memerlukan partisipasi langsung pelanggan dan belum mampu memberikan informasi secara real-time. Penelitian ini bertujuan untuk mengidentifikasi kepuasan pelanggan berdasarkan ekspresi wajah menggunakan metode Convolutional Neural Network (CNN). Penelitian menggunakan dataset Facial Expression Recognition (FER-2013) yang dipadukan dengan data tambahan hasil pengambilan citra menggunakan webcam. Tahapan penelitian meliputi pengumpulan data, preprocessing, augmentasi data, pelatihan model CNN, dan pengujian menggunakan 20% data uji. Ekspresi wajah kemudian diklasifikasikan ke dalam kategori puas dan tidak puas. Hasil penelitian menunjukkan bahwa model CNN yang dikembangkan mampu mencapai akurasi sebesar 94% dan dapat melakukan identifikasi ekspresi wajah secara real-time. Berdasarkan hasil tersebut, metode CNN efektif digunakan untuk mengidentifikasi kepuasan pelanggan dan berpotensi mendukung evaluasi layanan yang lebih cepat, objektif, dan otomatis pada minimarket. Customer satisfaction is an important indicator in evaluating service quality in minimarkets. Conventional satisfaction measurement methods, such as surveys and questionnaires, require direct customer participation and are unable to provide real-time feedback. This study aims to identify customer satisfaction based on facial expressions using the Convolutional Neural Network (CNN) method. The study utilized the Facial Expression Recognition (FER-2013) dataset combined with additional facial image data acquired through a webcam. The research process consisted of data collection, preprocessing, data augmentation, CNN model training, and testing using 20% of the dataset. Facial expressions were then classified into satisfied and dissatisfied categories. The results showed that the proposed CNN model achieved an accuracy of 94% and was capable of recognizing facial expressions in real-time. These findings indicate that CNN is an effective approach for customer satisfaction identification and can support faster, more objective, and automated service evaluation in minimarket environments.
Affiliations come from OpenAlex; journal OAI-PMH metadata carries none. Authors without an OpenAlex ID are matched by name, which can merge or split people.