51 lines
1.4 KiB
Python
51 lines
1.4 KiB
Python
# Seals - Program made for educational intent, can be freely distributed
|
|
# and can be used for economical intent. I will not take legal actions
|
|
# unless my intelectual propperty, the code, is stolen or change without permission.
|
|
|
|
# Copyright (C) 2020 VItor Hideyoshi Nakazone Batista
|
|
|
|
# This program is free software; you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License version 2 as published by
|
|
# the Free Software Foundation.
|
|
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
|
|
# You should have received a copy of the GNU General Public License along
|
|
# with this program; if not, write to the Free Software Foundation, Inc.,
|
|
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
|
|
import numpy as np
|
|
|
|
def eigen(a):
|
|
|
|
k = 0
|
|
l = np.ones((a.shape[0]))
|
|
|
|
while (k < a.shape[0]):
|
|
|
|
u = np.random.rand(a.shape[0],1)
|
|
u = u/max(u.min(), u.max(), key=abs)
|
|
|
|
ctrl = 0
|
|
|
|
while (ctrl != l[k]):
|
|
|
|
ctrl = l[k]
|
|
u = a.dot(u)
|
|
l[k] = max(u.min(), u.max(), key=abs)
|
|
u = u/l[k]
|
|
|
|
|
|
i = 0
|
|
|
|
while (u[i] == 0):
|
|
i += 1
|
|
|
|
a = a - (1/u[i])*u*a[i]
|
|
|
|
k += 1
|
|
|
|
return l |