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# Self Organizing Map - PowerPoint PPT Presentation

Self Organizing Map. SOM. Jaringan Self- Organizing Map merupakan salah satu model jaringan saraf tiruan yang menggunakan metode pembelajaran tanpa supervisi (unsupervised learning) Salah satu keunggulan dari algoritma Self-

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## PowerPoint Slideshow about ' Self Organizing Map' - ajay

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### Self Organizing Map

• Jaringan Self- Organizing Map merupakansalahsatu model jaringansaraftiruan yang menggunakanmetodepembelajarantanpasupervisi (unsupervised learning)

• Salahsatukeunggulandarialgoritma Self-

berdimensibebasdiproyeksikandariruang

dua

Diberikansuatu data set yang akandibuat SOM

nya

• Inisialisasisejumlah weight dengannilaiacak

• cari weight yang paling mendekatidengan Euclidian distance, disebut BMU(Best Matching Unit)

• update weight tsbdenganrumus

• Lakukaniterasiuntukmeng-update weight sampaimencapainilaiiterasi yang telahditentukandanmengurangilajupembelajaran . Ulangidarilangkah 2

A map of the world where countries have been colored with the color describing their poverty type (the color was obtained with the SOM in the previous figure):

Matlab the color describing their poverty type (the color was obtained with the SOM in the previous figure):

net = newsom(PR,[d1,d2,...],tfcn,dfcn,olr,osteps,tlr,tns)

• PR - Rx2 matrix of min and max values for R input elements.

• Di - Size of ith layer dimension, defaults = [5 8].

• TFCN - Topology function, default = 'hextop'.

• DFCN - Distance function, default = 'linkdist'.

• OLR - Ordering phase learning rate, default = 0.9.

• OSTEPS - Ordering phase steps, default = 1000.

• TLR - Tuning phase learning rate, default = 0.02; TND - Tuning phase neighborhood distance, default = 1.

• Akan the color describing their poverty type (the color was obtained with the SOM in the previous figure):digunakanpelatihan SOM dengan data gempa (datagempa.xls)

• Dalammatlabgunakanfungsisom (newsom(parameter,))

• Lihat source code som.m