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1 Pertemuan 11 OPTIMASI KINERJA Matakuliah: H0434/Jaringan Syaraf Tiruan Tahun: 2005 Versi: 1
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2 Learning Outcomes Pada akhir pertemuan ini, diharapkan mahasiswa akan mampu : Menjelaskan konsep optimasi kinerja.
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3 Outline Materi Steepest Descent Method. Contoh Aplikasi.
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4 Basic Optimization Algorithm p k - Search Direction k - Learning Rate or
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5 Steepest Descent Choose the next step so that the function decreases: For small changes in x we can approximate F(x): where If we want the function to decrease: We can maximize the decrease by choosing:
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6 Example
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7 Plot
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8 Newton’s Method Take the gradient of this second-order approximation and set it equal to zero to find the stationary point:
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9 Example
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10 Plot
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11 Non-Quadratic Example Stationary Points: F(x)F(x)F2(x)F2(x)
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