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Lesmana, Geyge, I Nyoman Piarsa, & I Made Suwija Putra.
" Identification of Baby's Feet Using Principal Component Analysis (PCA) Method Character Extraction with K-Nearest Neighbor (KNN) Classification in Matlab Application." <em>Jurnal Ilmiah Merpati (Menara Penelitian Akademika Teknologi Informasi)</em> [Online], 9.3 (2021): 200-212. Web.  3 Sep. 2026