... tu'dng tl! co dng eao va ngu'QeIl,li ~ 3.3 GOMCUM PHANGBANGMANG KOHONEN , ~ 3.3.1 Kie'n truc ct;lmph~ng [41] Cho t~p d6i tu"Qng gom ct;tm ph~ng la tie'n tdnh gom cac d6i tu'Qng 0, tMnh cac ct;tm( ... chi~u co 97 tha'phon [41],[42],[66] M,;lngKohonen hai chi€u thu'C1ngu'...