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PERCEPTRON

PERCEPTRON. Arsitektur jaringannya mirip dengan Hebb Fungsi aktivasinya bukan biner (0,1) atau bipolar(-1,1) tapi (-1, 0, 1) Ditemukan oleh Rosenblatt(1962) dan Minsky-Papert (1969)

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PERCEPTRON

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  1. PERCEPTRON • ArsitekturjaringannyamiripdenganHebb • Fungsiaktivasinyabukanbiner (0,1) atau bipolar(-1,1) tapi (-1, 0, 1) • Ditemukanoleh Rosenblatt(1962) danMinsky-Papert (1969) • AlgoritmapelatihanPerceptrondenganvektor input s, target t , batasambang (threshold)  danlajupemahaman (learning rate)  • Inisialisasisemuabobot = 0 dan b = 0 • Set masukan pi = si (i=1,2, …… R) • Hitungkeluaran n= piwi + b • Tentukan output fungsiaktivasi • Bila output  target –> perbaikibobotdan bias • wi (baru) = wi (lama) + w dengan w =  pi t • b(baru) =b(lama) +  b dengan b =  t • Perbaikandilakukanberulang-ulangsampaisemua a=t • Tidakhanya 1 epoch sepertipadaaturanHebb

  2. Contoh Soal 2.1 Buat jaringan Perceptron untuk menyatakan fungsi logika AND dengan menggunakan masukan biner dan keluaran bipolar. Pilih  = 1 dan  = 0,2 Jawab : Pola hubungan masukan-target : p1 w1 n a  f w2 p2 b 1

  3. Latihan Soal 2.2 Buat jaringan Perceptron untuk mengenali pola pada tabel di bawah ini. Gunaka  = 1 dan  = 0,1. Jawab :

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