def hopfield_learn_view(request):
schema = SchemaHopfieldLearn()
myform = Form(schema, buttons=('submit',))
js_tags, css_tags = get_resources(request, myform)
result = {'title': u"Hopfield učenje", "js_tags": js_tags,
"css_tags": css_tags, "hopfield_learn": True}
appstruct = {
'vhod': [[0, 0, 1, 1],
[0, 1, 0, 1]]
}
if 'submit' in request.POST:
controls = request.POST.items()
try:
appstruct = myform.validate(controls)
#print appstruct
nn = Hopfield(text_output=[])
nn.learn(appstruct['vhod'])
result["text_izhod"] = nn.text_output
#print appstruct
except ValidationFailure, e:
result['form'] = e.render()
return result
except Exception, e:
#print e
request.ext.flash_error(unicode(e), title="Napaka pri podatkih")
result["form"] = myform.render(appstruct=appstruct)
return result
def hopfield_energy_view(request):
schema = SchemaHopfieldEnergy()
myform = Form(schema, buttons=('submit',))
js_tags, css_tags = get_resources(request, myform)
result = {'title': u"Hopfield računanje energije", "js_tags": js_tags,
"css_tags": css_tags, "hopfield_energy": True}
appstruct = {
'vhod': [[1, 1, -1, -1]],
'utez': [[0, 1, 0, -2],
[1, 0, -2, 0],
[0, -2, 0, -3],
[-2, 0, -3, 0]]
}
if 'submit' in request.POST:
controls = request.POST.items()
try:
appstruct = myform.validate(controls)
#print appstruct
nn = Hopfield(text_output=[])
nn.weight_matrix = appstruct['utez']
#nn.calc_energy(appstruct['vhod'], appstruct['multiply'])
nn.calc_energy(appstruct['vhod'])
result["text_izhod"] = nn.text_output
#print appstruct
except ValidationFailure, e:
result['form'] = e.render()
return result
except Exception, e:
#print e
request.ext.flash_error(unicode(e), title="Napaka pri podatkih")
result["form"] = myform.render(appstruct=appstruct)
return result
def fit_hopfield(params):
# get params
n_label = params.get('n_label', None)
n_sample = params['n_sample']
fit_mode = params['fit_mode']
# load dataset
dataset = load_alphabet()
# target_name
target_names = params.get('target_names', None)
if target_names is None:
target_names = dataset.target_names[:n_label]
# transform data
dataset.data = binarize(dataset.data, binary_values=(-1,1))
# create train data
X, y = create_train_data(data=dataset.data,
target=dataset.target,
target_names=target_names,
n_sample=n_sample)
print_train_data(X, y, target_names)
# fit hopfield
hf = Hopfield(mode=fit_mode)
hf.fit(X, y, watch_weight=False)
# set params
params['img_shape'] = dataset.image_shape
return hf, X, y, target_names, params
def for_test(train_matrixs, output_dir, noise_max, noise_step):
sim = []
acc = []
for noise in range(5, noise_max + 1, noise_step):
sim_sub = []
acc_sub = []
print("noise {}%".format(noise))
#各条件に対して10回試行して平均をとる
for _ in range(0, 10):
test_matrix = add_noise(train_matrixs[0], noise)
hop = Hopfield(train_matrixs, test_matrix, max_time=100)
output = hop.predict()
print("check")
simularity = evaluate_sim(train_matrixs, output)
accurate = evaluate_acc(train_matrixs, output)
print("accurate: ", accurate, " simularity: ", simularity)
sim_sub.append(simularity)
acc_sub.append(accurate)
sim.append(np.mean(np.array(sim_sub)))
acc.append(np.mean(np.array(acc_sub)))
#最後の１回を図示
print("show")
os.makedirs(output_dir, exist_ok=True)
show_result(train_matrixs, test_matrix, output,
output_dir + "/" + str(noise) + ".png")
print(sim)
print(acc)
return sim, acc
def hopfield_view(request):
schema = SchemaHopfield()
myform = Form(schema, buttons=('submit',))
js_tags, css_tags = get_resources(request, myform)
result = {'title': u"Hopfield", "js_tags": js_tags,
"css_tags": css_tags, "hopfield": True}
appstruct = {
'utez': [[0, 1, -1],
[1, 0, 1],
[-1, 1, 0]]
}
if 'submit' in request.POST:
controls = request.POST.items()
try:
appstruct = myform.validate(controls)
#print appstruct
nn = Hopfield(appstruct['function_type'], text_output=[])
nn.weight_matrix = appstruct['utez']
nn.get_stable_states()
result["tabela"] = nn.table
result["text_izhod"] = nn.text_output
#print appstruct
except ValidationFailure, e:
result['form'] = e.render()
return result
except Exception, e:
#print e
request.ext.flash_error(unicode(e), title="Napaka pri podatkih")
result["form"] = myform.render(appstruct=appstruct)
return result
def main():
n = 4
hyperparameter = 0.1
c = Cities(n)
h = Hopfield(c.c, hyperparameter)
#h.go_to_minimum()
#h.plot_energy()
h.show_shortest_route()
def main():
text = t.poemToProse(t.getText('texts/wiki1.txt'))
words = t.textToWords(text)
# print(len(words))
uniq = frequencyVector(m.getNouns(words))
print(uniq[0], uniq[1])
matrix = matchMatrix(uniq[0], t.textToSenteces(text))
#print(np.linalg.det(matrix))
# print(np.linalg.svd(matrix)[2][8])
# print(matrix[2].sum())
#print(np.linalg.det(matrix_shit))
# print(np.linalg.det(matrix - np.identity(matrix.shape[0])))
# print(np.linalg.eigvals(matrix_shit))
hopfield = Hopfield(matrix, uniq[1])
hopfield.train()
# print(hopfield.result)
print(showResults(hopfield.result, uniq[0]))
yesNo = str(raw_input())
view = False
if yesNo == 'Y' or yesNo == 'y':
view = True
userInput = userInput.replace(" ", "")
fileList = userInput.split(",")
patterns = []
for image in fileList:
array = convert_image(image)
patterns.append(array)
hop = Hopfield()
hop.memorize_patterns(patterns, view = view)
print("Training complete. Do you want to see the weight matrices? [Y/N]")
yesNo = str(raw_input())
if yesNo == 'Y' or yesNo == 'y':
hop.show_patterns()
print("Stating restoration...")
corruptedImage = convert_image('corrupted.png')
originalCorr = corruptedImage
newImage = hop.update(corruptedImage)
i = 0
#Converte valores de 0-1 para -1 a 1
def fix_values(pattern):
pattern = pattern * 2
pattern = pattern - 1
return pattern
#Exibe uma janela contendo a imagem do padrão
def display(pattern, nameFile):
plt.imshow(pattern, cmap=plt.cm.binary, interpolation='nearest')
plt.savefig(nameFile)
if __name__ == '__main__':
hop = Hopfield()
#Le arquivos de treinamento e teste
train_patterns = readPatterns("train_letters.txt")
test_patterns = readPatterns("test_letters.txt")
#Mostra imagens dos padrões de entrada para memorização
for i in range(len(train_patterns)):
display(train_patterns[i].reshape(10, 10), 'padrao_' + str(i) + '.png')
#Mostra imagens dos padrões para teste da rede
#for i in range(len(test_patterns)):
display(test_patterns[i].reshape(10, 10), 'teste_' + str(i) + '.png')
train_patterns = fix_values(train_patterns)
test_patterns = fix_values(test_patterns)
count, width, height = [int(x) for x in f.readline().split()] # header
dim = width * height
for _ in range(count):
f.readline() # skip empty line
x = np.empty((height, width))
#print('x shape ', x.shape)
for r in range(height):
x[r, :] = np.array(list(f.readline().strip())) == '#'
patterns.append(2 * x.flatten() -
1) # flatten to 1D vector, rescale {0,1} -> {-1,+1}
util_setup(width, height)
model = Hopfield(dim)
model.train(patterns)
def flip_positions(input, positions):
flipped = 0
new_noise = input.copy()
for pos in positions:
new_noise[pos] = -new_noise[pos]
flipped += 1
return new_noise
def discrete_noise_correction(input):
all_inputs = []
for noise_amount in [0, 7, 14, 21]:
try:
matplotlib.rcParams['text.usetex'] = True
except:
pass
if __name__=="__main__":
# mnist image parameters
image_width, image_height = 28, 28
vectorized_image_length = image_height * image_width
# model size parameters
num_neurons = vectorized_image_length
num_memories = 3
# instantiate a network
net = Hopfield(num_neurons)
# generate some sample memories
images, _, _, _ = mnist()
images = images.reshape(-1, vectorized_image_length)
memories = [binarize(images[i + 1], thresh=176).ravel() for i in range(num_memories)]
# add the memories to the network
net.add_memories(memories)
# corrupt one of the memories
memory = memories[0]
noise_std = 0.1
noise_vec = npr.choice([-1., 1.], replace=True, size=num_neurons, p=[noise_std, 1. - noise_std])
corrupted_memory = np.multiply(memory, noise_vec)
if not os.path.exists(SAVE_FOLDER):
os.makedirs(SAVE_FOLDER)
# load pictures into a numpy float 2D array, 1 row per picture
with open('../../datasets/pict.dat', 'r') as source:
data = source.read().strip('\n')
data = data.split(',')
pics = np.array([
np.array(data[i:i + PICTURE_SIZE]).astype(np.float)
for i in range(0, len(data), 1024)
])
print(f'Successfully loaded {len(pics)} pictures.\n')
# create model
my_model = Hopfield(PICTURE_SIZE, debug_mode=DEBUG)
# learn first three pictures
print("Learning pictures p1, p2, and p3.")
my_model.learn_patterns(pics[0:3])
# from copy import deepcopy
# test = deepcopy(pics[0])
# Function to generate noisy samples
def add_noise(pattern, proportion):
noisy = pattern.copy()
nflips = int(proportion * pattern.shape[0])
indexes = np.random.choice(pattern.shape[0], nflips,
#Converte valores de 0-1 para -1 a 1
def fix_values(pattern):
pattern = pattern * 2
pattern = pattern - 1
return pattern
#Exibe uma janela contendo a imagem do padrão
def display(pattern):
plt.imshow(pattern, cmap=plt.cm.binary, interpolation='nearest')
plt.show()
if __name__ == '__main__':
hop = Hopfield()
#Le arquivos de treinamento e teste
train_patterns = readPatterns("train_letters_4.txt")
test_patterns = readPatterns("test_letters_4.txt")
#Mostra imagens dos padrões de entrada para memorização
#for i in range(len(train_patterns)):
# display(train_patterns[i].reshape(10, 10))
#Mostra imagens dos padrões para teste da rede
#for i in range(len(test_patterns)):
# display(test_patterns[i].reshape(10, 10))
train_patterns = fix_values(train_patterns)
test_patterns = fix_values(test_patterns)
def init_network(coeffs=(0.95, 0.3)):
network = Hopfield()
network.W = calculate_weights(coeffs)
return network
step = 1
# Create logdir name
logdir = "logs/{}-{}".format(
os.path.basename(__file__),
datetime.datetime.now().strftime("%Y-%m-%d_%H%M%S"))
if not os.path.exists("logs"):
os.mkdir("logs") # TF 1.6 will do this by itself
image_matrix = dataset.get_image_matrix_rgb()
network = Network()
network.construct(
logdir, ["original", "result", "result_valid", "result_mean", "var"] +
[f"result_colors/result_color_{i}" for i in range(len(b))])
network.visualize_image(image_matrix, "original")
hopfield = Hopfield(image_matrix, b=b, alpha=alpha, beta=beta, strmost=strmost)
while True:
# recompute strmost
_new_strmost = 1.0 * (step * batchsize - strmost_increase_after) / \
(strmost_increase_until - strmost_increase_after) * \
(strmost_final - strmost) + strmost
if _new_strmost > strmost:
hopfield.strmost = _new_strmost
print("{}: strmost={:.1f}".format(step * batchsize, hopfield.strmost))
t = time.time()
class Main():
def __init__(self, ):
self.settings = Settings()
self.hopfield = None
self.setupFigures([self.settings.xSize, self.settings.ySize])
self.workspacePatterns = []
self.learnedPatterns = []
def resetEveryting(self):
self.noOfWorkspace = 0
self.noOfLearned = 0
self.currentWorkspace = 0
self.currentLearned = 0
self.workspacePatterns.clear()
self.learnedPatterns.clear()
self.hopfield.unlearnAll()
self.figLearned.clear()
self.figWorkspace.clear()
self.figIO.clear()
self.workspaceToolsEnable(False)
self.learnedToolsEnable(False)
self.ioToolsEnable(False)
def setupFigures(self, dim):
self.figWorkspace = Figures(dim)
self.figLearned = Figures(dim)
self.figIO = Figures(dim)
self.hopfield = Hopfield(dim)
def applyDimensions(self, dim):
self.resetEveryting()
self.settings.ySize, self.settings.xSize = dim
self.updateCountLabels()
self.hopfield = Hopfield([self.settings.ySize, self.settings.xSize])
#self.setupFigures(dim)
def loadPatternsText(self, filename):
try:
loadedPatterns = iofunc.readMatrixTextMultipleFiles(filename)
self.loadPatterns(loadedPatterns)
except:
QtWidgets.QMessageBox.warning(
mainWindow, 'File error',
"Bad input file fromat, see help for more info.")
def loadPatternImage(self, filenames):
try:
for filename in filenames:
loadedPattern = iofunc.readMatrixImage(filename)
self.loadPatterns([loadedPattern])
except:
QtWidgets.QMessageBox.warning(
mainWindow, 'File error',
"Bad input file fromat, see help for more info.")
def loadPatterns(self, loadedPatterns):
#if the imported image is of different dimensions than loaded, reset all
arr = self.figWorkspace.image.get_array()
if len(loadedPatterns[0]) > 150 or len(loadedPatterns[0][0]) > 150:
QtWidgets.QMessageBox.warning(
mainWindow, 'Size error',
"Only patterns up to 150 pixels in either dimension can be loaded."
)
return
if (len(arr) != len(loadedPatterns[0])) or (len(arr[0]) != len(
loadedPatterns[0][0])):
self.applyDimensions(
[len(loadedPatterns[0]),
len(loadedPatterns[0][0])])
mainWindow.spnXSize.setValue(self.settings.xSize)
mainWindow.spnYSize.setValue(self.settings.ySize)
mainWindow.updateCanvasLearned()
self.workspacePatterns.extend(loadedPatterns)
self.figWorkspace.showPattern(self.workspacePatterns[-1])
self.noOfWorkspace = len(self.workspacePatterns)
self.currentWorkspace = len(self.workspacePatterns) - 1
self.updateCountLabels()
self.workspaceToolsEnable(True)
mainWindow.lblDrawErase.show()
mainWindow.updateCanvasWorkspace()
def saveWorkspacePatternText(self, filename):
iofunc.writeMatrixText(filename,
[self.workspacePatterns[self.currentWorkspace]])
def saveAllWorkspacePatternsText(self, filename):
iofunc.writeMatrixText(filename, self.workspacePatterns)
def saveOutputText(self, filename):
iofunc.writeMatrixText(filename, [self.figIO.arr])
def learnFromFileText(self):
pass
def updateCountLabels(self):
if not self.learnedPatterns:
mainWindow.lblLearned.setText("0/0")
else:
mainWindow.lblLearned.setText(
"%d/%d" % (self.currentLearned + 1, self.noOfLearned))
if not self.workspacePatterns:
mainWindow.lblWorkspace.setText("0/0")
else:
mainWindow.lblWorkspace.setText(
"%d/%d" % (self.currentWorkspace + 1, self.noOfWorkspace))
#workspace
def showNextWorkspace(self):
if not self.workspacePatterns:
return
self.currentWorkspace = rollover(0, self.noOfWorkspace - 1,
self.currentWorkspace + 1)
self.showWorkspaceNumber(self.currentWorkspace)
def showPreviousWorkspace(self):
if not self.workspacePatterns:
return
self.currentWorkspace = rollover(0, self.noOfWorkspace - 1,
self.currentWorkspace - 1)
self.showWorkspaceNumber(self.currentWorkspace)
def showWorkspaceNumber(self, number):
if not self.workspacePatterns:
return
self.figWorkspace.showPattern(self.workspacePatterns[number])
self.updateCountLabels()
mainWindow.updateCanvasWorkspace()
#learned
def showNextLearned(self):
if not self.learnedPatterns:
return
self.currentLearned = rollover(0, self.noOfLearned - 1,
self.currentLearned + 1)
self.showLearnedNumber(self.currentLearned)
def showPreviousLearned(self):
if not self.learnedPatterns:
return
self.currentLearned = rollover(0, self.noOfLearned - 1,
self.currentLearned - 1)
self.showLearnedNumber(self.currentLearned)
def showLearnedNumber(self, number):
if not self.learnedPatterns:
self.figLearned.clear()
mainWindow.updateCanvasLearned()
return
self.figLearned.showPattern(self.learnedPatterns[number])
self.updateCountLabels()
mainWindow.updateCanvasLearned()
#---
def learnPattern(self, _=None, pattern=None):
if pattern is None:
pattern = self.workspacePatterns[self.currentWorkspace]
self.hopfield.learnPattern(pattern.copy())
self.learnedPatterns.append(pattern.copy())
self.noOfLearned = len(self.learnedPatterns)
self.currentLearned = self.noOfLearned - 1
self.showLearnedNumber(self.currentLearned)
self.learnedToolsEnable(True)
mainWindow.updateCanvasLearned()
def learnAllPatterns(self):
for pattern in self.workspacePatterns:
self.learnPattern(pattern=pattern)
def unlearnPattern(self):
if not self.learnedPatterns:
return
self.hopfield.unlearnPattern(self.currentLearned)
del self.learnedPatterns[self.currentLearned]
if not self.learnedPatterns:
self.figLearned.clear()
self.learnedToolsEnable(False)
mainWindow.updateCanvasLearned()
self.noOfLearned = len(self.learnedPatterns)
self.updateCountLabels()
self.showPreviousLearned()
def unlearnAllPatterns(self):
for _ in range(len(self.learnedPatterns)):
self.unlearnPattern()
#workspace control
def newWorkspacePattern(self, _=None, pattern=None):
mainWindow.lblDrawErase.show()
self.workspaceToolsEnable(True)
if pattern is None:
pattern = np.ones([self.settings.ySize, self.settings.xSize],
dtype=np.int16)
self.workspacePatterns.append(pattern)
self.figWorkspace.showPattern(self.workspacePatterns[-1])
self.noOfWorkspace = len(self.workspacePatterns)
self.currentWorkspace = len(self.workspacePatterns) - 1
self.updateCountLabels()
mainWindow.updateCanvasWorkspace()
def deleteWorkspacePattern(self):
if not self.workspacePatterns:
return
pass
del self.workspacePatterns[self.currentWorkspace]
if not self.workspacePatterns:
self.figWorkspace.clear()
mainWindow.updateCanvasWorkspace()
self.workspaceToolsEnable(False)
mainWindow.lblDrawErase.hide()
self.noOfWorkspace = len(self.workspacePatterns)
self.updateCountLabels()
self.showPreviousWorkspace()
def clearWorkspacePattern(self):
if not self.workspacePatterns:
return
self.workspacePatterns[self.currentWorkspace].fill(1)
self.figWorkspace.showPattern(
self.workspacePatterns[self.currentWorkspace])
mainWindow.updateCanvasWorkspace()
def duplicateWorkspacePattern(self):
self.newWorkspacePattern(
pattern=self.workspacePatterns[self.currentWorkspace].copy())
# IO control
def setWorkspaceAsInput(self):
if not self.workspacePatterns:
return
self.figIO.showPattern(
self.workspacePatterns[self.currentWorkspace].copy())
self.ioToolsEnable(True)
mainWindow.updateCanvasIO()
def saveOutputToWorkspace(self):
self.newWorkspacePattern(pattern=self.figIO.arr.copy())
def distort(self):
if not self.learnedPatterns:
return
pattern = self.learnedPatterns[self.currentLearned].copy()
for pixel in np.nditer(pattern, op_flags=['readwrite']):
if np.random.rand() * 100 < self.settings.distortion:
pixel[...] = 1 - pixel
self.figIO.showPattern(pattern)
self.ioToolsEnable(True)
mainWindow.updateCanvasIO()
def solveFinished(self):
self.hopfieldThread.exit()
self.settings.animationRunningFlag = False
self.solvingInProgress(False)
mainWindow.btnSolve.setText("Reconstruct!")
mainWindow.btnSetAsInput.setEnabled(True)
mainWindow.actionWorkspaceSetAsInput.setEnabled(True)
def solve(self):
if self.settings.animationRunningFlag:
self.settings.animationRunningFlag = False
return
self.hopfield.setInitialState(self.figIO.arr.copy())
self.hopfieldThread = HopfieldThread(self.hopfield, self.figIO,
mainWindow.canvasIO,
self.settings)
self.hopfieldThread.finished.connect(self.solveFinished)
self.settings.animationRunningFlag = True
self.solvingInProgress(True)
mainWindow.btnSolve.setText("Stop")
mainWindow.btnSetAsInput.setDisabled(True)
mainWindow.actionWorkspaceSetAsInput.setDisabled(True)
self.hopfieldThread.start()
def workspaceToolsEnable(self, enable=True):
mainWindow.btnSetAsInput.setEnabled(enable)
mainWindow.actionWorkspaceSetAsInput.setEnabled(enable)
mainWindow.btnDeletePattern.setEnabled(enable)
mainWindow.btnClearPattern.setEnabled(enable)
mainWindow.actionWorkspaceDuplicate.setEnabled(enable)
mainWindow.actionWorkspaceDelete.setEnabled(enable)
mainWindow.actionWorkspaceDeleteAll.setEnabled(enable)
mainWindow.actionWorkspaceClear.setEnabled(enable)
mainWindow.btnLearn.setEnabled(enable)
mainWindow.btnLearnAll.setEnabled(enable)
mainWindow.actionNetworkLearnWorkspace.setEnabled(enable)
mainWindow.actionNetworkLearnAllWorkspace.setEnabled(enable)
mainWindow.actionWorkspaceSaveCurrent.setEnabled(enable)
mainWindow.actionWorkspaceSave.setEnabled(enable)
def learnedToolsEnable(self, enable=True):
mainWindow.btnDistort.setEnabled(enable)
mainWindow.actionNetworkDistort.setEnabled(enable)
mainWindow.btnUnlearn.setEnabled(enable)
mainWindow.actionNetworkUnlearn.setEnabled(enable)
mainWindow.actionNetworkUnlearnAll.setEnabled(enable)
def ioToolsEnable(self, enable=True):
mainWindow.btnSolve.setEnabled(enable)
mainWindow.actionSolve.setEnabled(enable)
mainWindow.btnSaveToWorkspace.setEnabled(enable)
mainWindow.actionNetworkSaveToWorkspace.setEnabled(enable)
mainWindow.actionNetworkSaveToFile.setEnabled(enable)
def solvingInProgress(self, enable=True):
mainWindow.btnSetAsInput.setEnabled(not enable)
mainWindow.btnDistort.setEnabled(not enable)
mainWindow.btnUnlearn.setEnabled(not enable)
mainWindow.actionNetworkUnlearn.setEnabled(not enable)
mainWindow.actionNetworkUnlearnAll.setEnabled(not enable)
mainWindow.btnLearn.setEnabled(not enable)
mainWindow.btnLearnAll.setEnabled(not enable)
mainWindow.actionNetworkSaveToFile.setEnabled(not enable)
from hopfield import Hopfield
import argparse
if ( __name__ == '__main__' ):
parser = argparse.ArgumentParser()
parser.add_argument('-r', "--row",
help = "Number of rows for the pattern engine (int)", type = int)
parser.add_argument('-c', "--col",
help = "Number of columns for the pattern engine (int)", type = int)
parser.add_argument('-o', "--order", nargs = '*',
help = "List specifying visiting order of each node", type = int)
args = parser.parse_args()
row = args.row
col = args.col
order = args.order
# print("row = ", row)
# print("col = ", col)
# print("order = ", order)
test = Hopfield(row = row, col = col, order = order)
test.run()
from data import heart, broken import numpy as np from hopfield import Hopfield import matplotlib.pyplot as plt h, w = heart.shape hpd = Hopfield() # Reshaping the data to match requirements of Hopfield. full = heart.flatten().reshape(-1, 1).T brkn = broken.flatten().reshape(-1, 1).T hpd.fit(full) recreated_heart = hpd.sequential_predict(brkn, 800) plt.imshow(recreated_heart.reshape(h, w), cmap="Reds") plt.show()
def applyDimensions(self, dim):
self.resetEveryting()
self.settings.ySize, self.settings.xSize = dim
self.updateCountLabels()
self.hopfield = Hopfield([self.settings.ySize, self.settings.xSize])
#!/usr/bin/env python3 # -*- coding: utf-8 -*- """ Created on Tue May 29 22:55:20 2018 @author: hielke """ from hopfield import Hopfield import numpy as np vector = np.matrix([1, -1, 1, -1, 1, 1, 1, 1]) hp = Hopfield(hebbian)
def setupFigures(self, dim):
self.figWorkspace = Figures(dim)
self.figLearned = Figures(dim)
self.figIO = Figures(dim)
self.hopfield = Hopfield(dim)
def train(train_data):
model = Hopfield(0, 25)
model.update(train_data)
return model
network = Network()
network.construct(logdir, ["original_greyscale", "original_rgb", "result"])
#visualize.copy_image(image_filename, "out_image_original.png")
#visualize.clear_image("out_image.png")
image_matrix = dataset.get_image_matrix_grayscale()
image_matrix_rgb = dataset.get_image_matrix_rgb()
#visualize.visualize_image_matrix_grayscale(image_matrix, "out_image_original_gray.png")
#for i in range(10):
network.visualize_image(image_matrix_rgb, "original_rgb")
network.visualize_image(image_matrix, "original_greyscale")
hopfield = Hopfield(image_matrix, alpha=alpha, strmost=strmost)
while True:
# recompute strmost
_new_strmost = 1.0 * (step * batchsize - strmost_increase_after) / \
(strmost_increase_until - strmost_increase_after) * \
(strmost_final - strmost) + strmost
if _new_strmost > strmost:
hopfield.strmost = _new_strmost
#hopfield.recompute_random()
hopfield.recompute_random_batch(batchsize)
if not sol.dot(
z[i, :]) * vector[i] > err: # prediction incorrect
sol += rate * z[i, :] * vector[i]
still_wrong = True
if not still_wrong:
print("We are good")
break
triu = zip(*np.triu_indices(len(vector), 1))
weights = np.matlib.zeros((len(vector), len(vector)))
for ind, iu in enumerate(triu):
weights[iu] = sol[ind]
weights += weights.T
tresh = -1 * sol[-len(vector):]
return weights, tresh
weights, tresh = hopfield_perceptron(matrix)
np.savetxt('weights.txt', weights)
np.savetxt('tresh.txt', tresh)
hp = Hopfield.with_tresh(weights, tresh)
pprint(hp.list_attractors())
#plt.close('all')
#for state in hp.list_attractors():
# hp.plot_neuron_states(4, 2, state)
