def main():
#Load .xls .xlsx file
file_name = raw_input('File name: ')
work_book = load_workbook(file_name)
#Load sheet
print (work_book.get_sheet_names())
sheet_name = raw_input('\nSheet name: ')
work_sheet = work_book.get_sheet_by_name(sheet_name)
#Select workspace in sheet
begin_position = raw_input('Begin position: ')
end_position = raw_input('End position: ')
workspace = work_sheet[begin_position : end_position] #Workspace(begin, end)
#Load data
training_set = []
for row in workspace:
class_name = row[0].value # first column is class name
for item in row[1:]: # skip first column
inputs = np.array([item.value])
training_set.append((inputs, class_name))
#Create SOM ANN
som_ann = SOM((1, 4, 4))
#Train network
print 'Wait, I\'m traning...'
som_ann.train([i[0] for i in training_set], 200, -1, 'quadratic')
somplot(som_ann, training_set)
def som(self, m, n, dim, iterations):
# step 4
trainData = numpy.zeros((len(self.contrastPoints), 1))
for i in range(len(self.contrastPoints)):
trainData[i] = [self.contrastPoints[i]]
som = SOM(m, n, dim, iterations)
som.train(trainData)
mapped = som.map_vects(trainData)
d0 = 0
d1 = 0
d2 = 0
for d, m in zip(trainData, mapped):
mapv = m[0] + m[1]
if (d0 == 0 and mapv == 0):
d0 = d[0] if d0 < d[0] else d0
if (d1 == 0 and mapv == 1):
d1 = d[0] if d1 < d[0] else d1
if (d2 == 0 and mapv == 2):
d2 = d[0] if d2 < d[0] else d2
least = 0 if d0 < d1 and d0 < d2 else (1 if d1 < d0 and d1 < d2 else (2 if d2 < d1 and d2 < d0 else 0))
most = 0 if d0 > d1 and d0 > d2 else (1 if d1 > d0 and d1 > d2 else (2 if d2 > d1 and d2 > d0 else 0))
mean = 0 if d0 > d1 and d0 < d2 else (1 if d1 > d0 and d1 < d2 else (2 if d2 > d1 and d2 < d0 else 0))
print(d0, d1, d2)
print(least, most, mean)
self.mappingDict = {'least': least, 'mean': mean, 'most': most}
self.blocksMapping = mapped
def SelfOrganizingMap(Feature_List):
som = SOM(SOM_LINES, SOM_COLS, len(Feature_List[0]), SOM_ITERATIONS)
som.train(Feature_List)
image_grid = som.get_centroids()
mapped = som.map_vects(Feature_List)
return mapped, image_grid
def SelfOrganizingMap(feature_list):
no_features = len(feature_list[0])
print('Clustering', no_features, 'features')
som = SOM(SOM_LINES, SOM_COLS, no_features, SOM_ITERATIONS, alpha=ALPHA, sigma=SIGMA)
som.train(feature_list)
image_grid = som.get_centroids()
mapped = som.map_vects(feature_list)
return mapped, image_grid
def solve_tsp(filename: str):
# Parse problem from txt file
problem = parse_tsp_problem(filename)
cases = problem[:, 1:]
# Initialize self organizing map
som = SOM(cases=cases)
# Train
som.train()
# Use Som weights to generate a solution for tsp problem
solution = create_tsp_solution(som.cases, som.weights)
visualize_tsp(solution, som.weights)
def main():
# Training inputs for RGBcolors
credits_data = pd.read_csv("testdata/credit_train.csv", header=None)
columns = credits_data.columns
train_data = credits_data[columns[:-1]].copy().values
label_data = credits_data[columns[-1]].copy().values
train_data_scale = preprocessing.scale(train_data)
# colors = np.array(
# [[0., 0., 0.],
# [0., 0., 1.],
# [0., 0., 0.5],
# [0.125, 0.529, 1.0],
# [0.33, 0.4, 0.67],
# [0.6, 0.5, 1.0],
# [0., 1., 0.],
# [1., 0., 0.],
# [0., 1., 1.],
# [1., 0., 1.],
# [1., 1., 0.],
# [1., 1., 1.],
# [.33, .33, .33],
# [.5, .5, .5],
# [.66, .66, .66]])
# color_names = \
# ['black', 'blue', 'darkblue', 'skyblue',
# 'greyblue', 'lilac', 'green', 'red',
# 'cyan', 'violet', 'yellow', 'white',
# 'darkgrey', 'mediumgrey', 'lightgrey']
# Train a 20x30 SOM with 400 iterations
som = SOM(1, 2, len(columns) - 1, 400)
som.train(train_data_scale)
# Get output grid
image_grid = som.get_centroids()
# Map colours to their closest neurons
mapped = som.map_vects(train_data_scale)
# Plot
plt.imshow(image_grid)
plt.title('Color SOM')
for i, m in enumerate(mapped):
plt.text(m[1],
m[0],
label_data[i],
ha='center',
va='center',
bbox=dict(facecolor='white', alpha=0.5, lw=0))
plt.show()
def SortingSelfOrganizingMap(Feature_List):
# Train a SS_LINES x SS_COLS self-organizing map using NUM_ITERATIONS iterations
som = SOM(SS_LINES, SS_COLS, len(Feature_List[0]), NUM_ITERATIONS)
som.train(Feature_List)
mapped = som.map_vects(Feature_List)
# Grayscale landscape
sorting_landscape = np.zeros((SS_LINES, SS_COLS), np.float16)
for i in range(len(mapped)):
lin = mapped[i][0]
col = mapped[i][1]
sorting_landscape[lin][col] = Feature_List[i][0]
io.imsave('sorted_landscape.png', sorting_landscape)
def call_som(m, n, dim, input_data, weight_after_insertion=None, alpha=None, sigma=None):
# get the shape of input data inorder to calc iternumber in SOM
iter_no = input_data.shape[0]*10
som = SOM(m, n, dim, weight_after_insertion, n_iterations= iter_no)
trained_weight = som.train(input_data)
mapped = som.map_vects(input_data)
result = np.array(mapped)
return trained_weight, result
def som_plot(img, som_dim):
# Method for creating a small Kohonen Self-Organizing Map (SOM) of the image and
# plotting the SOM on the screen. RGB values of the colors are printed on the screen.
# Select small amount of random pixels from the image.
n_pixels = 500
colors = shuffle(img.reshape((img.shape[0] * img.shape[1], 3)))[:n_pixels]
print('\n')
print('=' * 80)
print('Self-Organized Map of {} randomly picked colors:'.format(som_dim *
som_dim))
# Train the SOM model with small amount of iterations.
som = SOM(som_dim, som_dim, 3, 10)
som.train(colors)
#Get output grid from the SOM. This is plotted as color palette.
image_grid = som.get_centroids()
plt.figure(figsize=(5, 5))
plt.imshow(image_grid)
plt.title('Color map')
plt.show()
# Create RGB palette values from the image_grid.
grid = np.array(image_grid)
grid *= 255
grid = grid.astype(np.int)
rgb_df = pd.DataFrame(np.zeros((som_dim, som_dim)))
hex_df = pd.DataFrame(np.zeros((som_dim, som_dim)))
for i in range(som_dim):
for j in range(som_dim):
rgb_df.iloc[i, j] = str(grid[i, j])
hex_color = '#{:02x}{:02x}{:02x}'.format(grid[i, j, 0],
grid[i, j, 1], grid[i, j,
2])
hex_df.iloc[i, j] = hex_color
print('RGB values:')
print(rgb_df)
print('\n')
print('HEX color values:')
print(hex_df)
def call_som(m,
n,
dim,
input_data,
weight_after_insertion=None,
alpha=None,
sigma=None):
som = SOM(m, n, dim, weight_after_insertion)
trained_weight = som.train(input_data)
mapped = som.map_vects(input_data)
result = np.array(mapped)
return trained_weight, result
def tensorSOM():
import numpy as np
from som import SOM
import tensorflow as tf
sess = tf.InteractiveSession()
map_size = 30
s = SOM(input_shape=(num_features, ),
map_size_n=map_size,
num_expected_iterations=epochs,
session=sess)
sess.run(tf.initialize_all_variables())
#Training inputs
for i in range(10):
print('Epoch: {0}'.format(i))
rnd_ind = np.random.randint(0, len(X))
s.train(X[rnd_ind, :])
print(np.reshape(s.get_weights(), [map_size, map_size, num_features]))
print(np.array(y) * s.get_weights())
def main(): # FIT THE LDA lda = TagsLDA(skip=10) theta, beta = lda.train(ntopics=30, niter=300, seed=42) # TRAIN THE SOM dist_func = lambda p, q: divergence(p, q) som = SOM(grid_shape=(20, 20), ndims=lda.nterms, dist_func=dist_func) # len(dictionary) = len(dictionary.token2id) som.train(lda.beta, nepochs=10) # PLOT labels = [lda.topic_representatives(i, topn=3, show_scores=False) for i in range(lda.ntopics)] areas = np.array([30*2*np.pi*score**2 for score in lda.topic_significances()]) areas_top, top_indices = zip(*sorted([(a, i) for i, a in enumerate(areas)], reverse=True)[:10]) locations = som.get_locations(vecs=lda.beta[top_indices, :], labels=labels) # print(locations) labels, data = zip(*locations.items()) x, y = zip(*data) plt.scatter(x, y, s=areas_top, alpha=0.5) for l, x, y in zip(labels, x, y): plt.annotate(l, xy=(x, y), textcoords='offset points', xytext=(0, 20), horizontalalignment='center') plt.show()
def som3(self, m, n, dim, iterations):
# step 4
trainData = numpy.zeros((len(self.contrastPoints), 3))
for i in range(len(self.contrastPoints)):
trainData[i] = [self.diagonalContrast[i], self.verticalContrast[i], self.horizontalContrast[i]]
som = SOM(m, n, dim, iterations)
som.train(trainData)
mapped = som.map_vects(trainData)
d0 = 0
d1 = 0
d2 = 0
for d, m in zip(trainData, mapped):
mapv = m[0] + m[1]
if (d0 == 0 and mapv == 0):
d0 = d[0] if d0 < d[0] else d0
if (d1 == 0 and mapv == 1):
d1 = d[0] if d1 < d[0] else d1
if (d2 == 0 and mapv == 2):
d2 = d[0] if d2 < d[0] else d2
arr = numpy.array([d0, d1, d2])
most = numpy.argmax(arr)
numpy.delete(arr, most, 0)
least = numpy.argmin(arr)
numpy.delete(arr, least, 0)
mean = 0 if (arr[most] == d1 or arr[most] == d2) and (arr[least] == d1 or arr[least] == d2) else (1 if (arr[most] == d0 or arr[most] == d2) and (arr[least] == d0 or arr[least] == d2) else 2)
self.mappingDict = {'least': least, 'mean': mean, 'most': most}
self.blocksMapping = mapped
self.neuronsMap = som.get_centroids()
def main():
'''
Create and train a SOM with the XOR problem
SOM settings
------------
The SOM used in this test works in a 2D space with a
map's weights of 2x2
Train settings
---------------
The SOM will be trained with the XOR problem, this training
will run in 2000 iterations. In the weights adjustment function, a
zero neighborhood radius, that mean that only the winner neuron's
weights will be updated.
'''
som_ann = SOM((2, 2, 2))
training_set = [
np.array([1, 0]),
np.array([0, 1]),
np.array([1, 1]),
np.array([0, 0]),
]
#Train network
converged, epochs = som_ann.train(training_set, 2000, -1, 'zero')
if not converged:
print 'SOM didn\'t converge with the minimum learning rate\n'
else:
print 'SOM converged in {0} epochs\n'.format(epochs)
#Mapping values
for entry in training_set:
class_name = som_ann.map(entry)
print 'The object {0} belongs to class: {1}'.format(entry, class_name)
#Get the full mapped classes
print ''
elements = som_ann.get_mapped_classes()
print elements
y_list.append(float(data[1]))
z_list.append(int(data[2]))
input_list = [[a, b] for a, b in zip(x_list, y_list)]
output_list = [a for a in z_list]
input_list = np.array(input_list)
output_list = np.array(output_list)
"""
Get Central points from SOM network
"""
som = SOM(2, 2, 2)
print('Running SOM network...')
som.train(input_list, num_epochs=200, init_learning_rate=0.3)
som_result = [np.array(som.output[i]) for i in range(len(som.output))]
"""
Create RBF objects and run RBF network
"""
print('RBF with random c, updated by LMS: \n')
rbf_1 = RBF(input_list, output_list, 9, 'random', som_c_list=None, update='lms')
rbf_1.run()
print("-------------------------------------")
print('RBF with random c, updated by SGA: \n')
rbf_2 = RBF(input_list, output_list, 9, 'random', som_c_list=None, update='sga')
rbf_2.run()
filename, varstring = file.split(':')
varnames = varstring.split(',')
sources.append((filename, varnames))
som = SOM(som_shape, sources)
print('SOM nodes shape ', som.nodes.shape)
print('SOM std and mean ', som.std.shape, som.mean.shape)
radius = (float(max(som.shape)), 0.0)
now = time.time()
som.train(args.iterations, radius, args.rate)
print("\nThat took {:.3f} seconds".format(time.time()-now))
#som.plot('result.png', 0)
#plt.figure(figsize=(8,8))
#i = 1
#for index in np.ndindex(som.shape):
# print(index, i)
# node_full = np.empty(tuple(variables[0].shape[1:])).flatten()
# mask = np.ma.getmaskarray(variables[0][0,:].flatten())
# print(node_full.shape, mask.shape)
def SelfOrganizingMap(Feature_List, where):
if not os.path.exists(where):
os.makedirs(where)
som = SOM(SOM_LINES, SOM_COLS, len(Feature_List[0]), NUM_ITERATIONS)
som.train(Feature_List)
# Get output grid
image_grid = som.get_centroids()
#print 'Image grid shows weights for all the input features'
#print image_grid
# Get vector mappings
mapped = som.map_vects(Feature_List)
#print 'Mapping', mapped
# Visualization part
# Needs to be refactored to produce output for any number of clusters
avg_line = []
for i in range(NUM_CLUST):
avg_line.append(0)
avg_column = []
for i in range(NUM_CLUST):
avg_column.append(0)
for i in range(0, len(mapped), NUM_CLUST):
for j in range(NUM_CLUST):
avg_line[(i + j) % NUM_CLUST] += mapped[i + j][0]
avg_column[(i + j) % NUM_CLUST] += mapped[i + j][1]
for i in range(len(avg_line)):
avg_line[i] = avg_line[i] / (len(mapped) / NUM_CLUST)
for i in range(len(avg_column)):
avg_column[i] = avg_column[i] / (len(mapped) / NUM_CLUST)
'Average location'
print avg_line, avg_column
# Grayscale landscape
sorting_landscape = []
for i in range(NUM_CLUST):
sorting_landscape.append(np.zeros((SOM_LINES, SOM_COLS), np.float16))
for i in range(len(mapped)):
lin = mapped[i][0]
col = mapped[i][1]
sorting_landscape[i % NUM_CLUST][lin][col] += 0.05
if sorting_landscape[i % NUM_CLUST][lin][col] > 1.0:
sorting_landscape[i % NUM_CLUST][lin][col] = 1.0
for i in range(NUM_CLUST):
sorting_landscape[i][avg_line[i]][avg_column[i]] = 1.0
for i in range(NUM_CLUST):
io.imsave(where + str(i) + '_sorting_cluster.png',
sorting_landscape[i])
# Colored landscape
colored_landscape = np.zeros((SOM_LINES, SOM_COLS, 3), np.float16)
white = np.array([1.0, 1.0, 1.0])
# sorting
insertion_color = np.array([0.0, 0.0, 1.0]) # blue
bubble_color = np.array([0.0, 1.0, 0.0]) # green
heap_color = np.array([1.0, 0.0, 0.0]) # red
quick_color = np.array([1.0, 0.0, 1.0]) # magenta
random_color = np.array([1.0, 1.0, 0.0]) # yellow
# non-sorting
reverseSorted_color = np.array([0.0, 1.0, 1.0]) # cyan
intervalSwapSorted_color = np.array([1.0, 0.5, 0.0]) # orange
reverse_color = np.array([0.5, 1.0, 0.0]) # lime-green
intervalSwap_color = np.array([1.0, 0.0, 0.5]) # fuchsia
colored = [
insertion_color, bubble_color, heap_color, quick_color, random_color
]
#add_colored = [reverseSorted_color, intervalSwapSorted_color, reverse_color, intervalSwap_color]
#colored.extend(add_colored)
grad = 0.005
for i in range(len(mapped)):
lin = mapped[i][0]
col = mapped[i][1]
colored_landscape[lin][col] += grad * colored[i % NUM_CLUST]
#if colored_landscape[lin][col].any() > 1.0:
# colored_landscape[lin][col] -= 0.05*colored[i%NUM_CLUST]
for i in range(NUM_CLUST):
colored_landscape[avg_line[i]][
avg_column[i]] = 0.3 * white + 0.7 * colored[i]
io.imsave(where + 'all_sorting_clusters.png', colored_landscape)
import numpy as np import pandas as pd from som import SOM from sklearn.datasets import load_boston from sklearn.preprocessing import StandardScaler # read in data boston = load_boston().data # standard scale data ss = StandardScaler() X = ss.fit_transform(boston) # instantiate SOM som = SOM(X, 3, 3, 1, 100, 0.01) # train model tree, weights, winners, distances = som.train(X) # print data # print(weights) print(set(winners)) dist, ind = som.predict(X, tree) print(set([x[0] for x in ind]))
from som import SOM
import pandas as pd
import numpy as np
input_data = pd.read_csv("C:/Users/KHT/Desktop/hw2out.csv")
som_net = SOM(10, 10, 2)
coor_data = input_data.iloc[np.random.permutation(len(input_data))]
trunc_data = coor_data[["x", "y"]]
print(trunc_data.values)
# print(trunc_data.values.shape[0])
som_net.train(trunc_data.values, num_epochs=1000, init_learning_rate=0.1)
"""
def predict(df):
bmu, bmu_idx = som_net.find_bmu(df.values)
df['bmu'] = bmu
df['bmu_idx'] = bmu_idx
return df
clustered_df = trunc_data.apply(predict, axis=1)
result_array = clustered_df.to_records().tolist()
print("ID number {0}".format(result_array[0][0]))
print("X Coordinate on topological map {0}".format(result_array[0][4][0]))
print("Y Coordinate on topological map {0}".format(result_array[0][4][1]))
"""
#For plotting the images
from matplotlib import pyplot as plt
import numpy as np
from som import SOM
colors = np.array([[0., 0., 1.], [0., 0., 0.95], [0., 0.05, 1.], [0., 1., 0.],
[0., 0.95, 0.], [0., 1, 0.05], [1., 0., 0.], [1., 0.05, 0.],
[1., 0., 0.05], [1., 1., 0.]])
som = SOM(4, 4, 3)
som.train(colors)
plt.imshow(som.centroid_grid)
plt.show()
inputFilename = 'myo_raw_data.csv'
header = '% qx, qy, qz, qw, ax, ay, az, gx, gy, gz\n'
try:
f = open(inputFilename, 'r')
except Exception as error:
print("ERROR: Couldn't read from {}".format(inputFilename))
else:
with f:
reader = csv.reader(f)
for row in reader:
if row[0][0] is not '%':
myo_data.append(row)
print myo_data[0]
#Training inputs for Myo data (quat, accel, gyro)
som_data = np.array(myo_data)
#Train a 20x30 SOM with 400 iterations
som = SOM(SOM_X, SOM_Y, MYO_DATA_DIM, SOM_ITER)
som.train(som_data)
#Get output grid
image_grid = som.get_centroids()
#Plot
plt.imshow(image_grid)
plt.title('Myo SOM')
plt.show()
[1., 1., 1.],
[.33, .33, .33],
[.5, .5, .5],
[.66, .66, .66]])
colors2 = np.array(
[[0., 0., 0.],
[0., 0., 1.],
[1., 1., 0.],
[1., 1., 1.],
[1., 0., 0.]])
color_names = \
['black', 'blue', 'darkblue', 'skyblue',
'greyblue', 'lilac', 'green', 'red',
'cyan', 'violet', 'yellow', 'white',
'darkgrey', 'mediumgrey', 'lightgrey']
s = SOM(colors2, [25, 25], alpha=0.3)
# Initial weights
plt.imshow(s.w_nodes)
plt.show()
# Learning to cluster the RGB colors
s.train(max_it=30)
# Trained weights
plt.imshow(s.w_nodes)
plt.show()
f.close()
f = open('appdata.json', 'r')
applist = json.load(f)
applist = applist['applist']['apps']
f.close()
f = open('tagDATA2.json', 'r')
tag = json.load(f)
f.close()
data2 = []
for i in data0:
data2.append(data0[i]['gameplay'])
data = np.array(data2)
# Train a 20x30 SOM with 400 iterations
som = SOM(5, 2, 10, 100) # My parameters
som.train(data)
cnn0 = load_model('model0.h5')
cnn1 = load_model('model1.h5')
cnn2 = load_model('model2.h5')
cnn3 = load_model('model3.h5')
cnn4 = load_model('model4.h5')
cnn5 = load_model('model5.h5')
cnn6 = load_model('model6.h5')
cnn7 = load_model('model7.h5')
cnn8 = load_model('model8.h5')
cnn9 = load_model('model9.h5')
def gameRecommendation(id):
id = str(id)
url = 'http://api.steampowered.com/IPlayerService/GetOwnedGames/v0001/?key=DF0E97F40E0BEE667B0BF01B6626A9DA&steamid=' \
#For plotting the images
from matplotlib import pyplot as plt
import numpy as np
from som import SOM
colors = np.array(
[[0., 0., 1.],
[0., 0., 0.95],
[0., 0.05, 1.],
[0., 1., 0.],
[0., 0.95, 0.],
[0., 1, 0.05],
[1., 0., 0.],
[1., 0.05, 0.],
[1., 0., 0.05],
[1., 1., 0.]])
som = SOM(4, 4, 3)
som.train(colors)
plt.imshow(som.centroid_grid)
plt.show()
### PREPARE THE BACKGROUND ARRAY ###
bg = np.loadtxt('eta_mc_som_background_feb2019.txt') # convert to np array
np.random.shuffle(bg)
bg = bg[:2000,:]
bg2 = bg
backupbg = bg2
#bg = bg[:10000,:] # cut the np array to preferred size
flag_bg = bg[:,8] # array of zeros for background, flags each event as background
bg = bg[:,[0,1,2,3,4,5,6,7]] # cuts the background array to only include variables you want to train on
# finish preparing the final dataset (one big numpy array)
data = np.concatenate((sig,bg),axis=0) # concatenate the sig and bg numpy arrays into one big array
flags = np.concatenate((flag_sig, flag_bg), axis=0) # concatenates the flag arrays into one array, each entry corresponding to the entry of the data array
### TRAINING ###
#som = SOM(dimx, dimy, 8, 400) # Train a dimx X dimy SOM with 400 iterations, 8 is the number of variables in the data array
som = SOM(dimx, dimy, 8)
som.train(data) # trains on the dataset prepared
### THIS WILL TAKE AWHILE ###
### TO STORE THE TRAINING RESULTS INTERACTIVELY IN ipython DO:
### weightages = som._weightages
### %store weightages
### THEN TO RECOVER DO:
### %store -r
### som = SOM(dimx, dimy, 8, 400)
### som._weightages = weightages
### som._trained = True
print(str(datetime.datetime.now())) # print the time to observe how long the training will take
mapped = np.array(som.map_vects(data)) # map each datapoint to its nearest neuron
# post training manipulations to the final dataset (one big numpy array)
data = np.append(data,mapped,axis=1) # append the mapped neurons to data
data = np.column_stack((data,flags)) # append the flags to the dataset
##test U-matrix
weights = [[5, 0], [-1, 4]]
sigma = 1
learning_rate = 1
sigma_decrease_rate = 0
som = SOM(inputs,
weights,
sigma=sigma,
learning_rate=learning_rate,
sigma_decrease_rate=sigma_decrease_rate,
epochs=10)
som.train(ignore_hk=True, display=True)
points = [[1, 4], [6, 2], [1, 3], [5, 1], [4, 0], [0, 4], [3, 4]]
predictions = som.predict(points, ignore_hk=True, display=True)
p, m = som.prediction_line(display=True)
def med(points, p, m):
y = []
for point in points:
y.append(m * (point - p[0]) + p[1])
return y
plt.grid()
from som import SOM
if __name__ == "__main__":
a = SOM(5, 5, 3, 2, False, 0.05)
a.train(100,
[[[0, 0, 0], [0, 0]], [[1, 0, 0], [0, 1]], [[0, 1, 0], [1, 0]],
[[1, 1, 1], [1, 1]]])
print("Prediction 0 and 0 ,", round(a.predict([0, 0, 0])[0, 1]))
data = []
# parse data
for row in r:
l = []
n = row[0]
v = map(float, row[1:])
v = map(lambda x: x / max(v), v)
l.append(n)
for x in v:
l.append(x)
data.append(l)
# create SOM & train
s = SOM()
results = s.train(data)
# restart if only one node (growth threshold not triggered)
while len(results) == 1:
print 'Only one node, restarting...'
s = SOM()
results = s.train(data)
print """
Parameters summary:
Epochs: {epochs}
Cluster Threshold: >={threshold}
Radius: {radius}
Radius Decay Rate: {radius_decay}
Rate: {rate}
Rate Decay: {rate_decay}
[0.6, 0.5, 1.0], [0., 1., 0.], [1., 0., 0.],
[0., 1., 1.], [1., 0., 1.], [1., 1., 0.],
[1., 1., 1.], [.33, .33, .33], [.5, .5, .5],
[.66, .66, .66]])
#the color's corresponding names, to label the plot
color_names = \
['black', 'blue', 'darkblue', 'skyblue',
'greyblue', 'lilac', 'green', 'red',
'cyan', 'violet', 'yellow', 'white',
'darkgrey', 'mediumgrey', 'lightgrey']
som = SOM(60, 100, 3)
start = time.time()
scaling_factor = 1e2
som.train(training_samples, 400, 0.8, scaling_factor, 20, scaling_factor)
end = time.time()
total_time = end - start
print("Elapsed time: {}".format(total_time))
pl.imshow(som.som, origin='lower')
#label each weight with its corresponding name
for i in range(len(training_samples)):
bmu = som.get_bmu(training_samples[i])
pl.text(bmu[1],
bmu[0],
color_names[i],
ha='center',
va='center',
bbox=dict(facecolor='white', alpha=0.5, lw=0))
def display_digit(num):
label = y_train[num].argmax(axis=0)
image = x_train[num].reshape([28, 28])
plt.title('Example: %d Label: %d' % (num, label))
plt.imshow(image, cmap=plt.get_cmap('gray_r'))
plt.show()
display_digit(ran.randint(0, x_train.shape[0]))
# Import som class and train into 30 * 30 sized of SOM lattice
from som import SOM
som = SOM(30, 30, x_train.shape[1], 200)
som.train(x_train)
# Fit train data into SOM lattice
mapped = som.map_vects(x_train)
mappedarr = np.array(mapped)
x1 = mappedarr[:, 0]
y1 = mappedarr[:, 1]
index = [np.where(r == 1)[0][0] for r in y_train]
index = list(map(str, index))
## Plots: 1) Train 2) Test+Train ###
plt.figure(1, figsize=(12, 6))
plt.subplot(121)
# Plot 1 for Training only
samples = [[random.gauss(m, 0.1) for e in range(0, 5)]
for m in range(0, 20)
for sample in range(0,10)]
# training
for index in range(0, len(samples)):
# learn_rate as a factor of how much the weight vectors are
# pulled to the target vector.
learn_rate = exponentional_damping(\
start = 1.0, end = 0.1,\
t = float(index), tmax = len(samples))
# sigma influences neighbourhood radius
sigma = exponentional_damping(\
start = 1.0, end = 0.1,\
t = float(index), tmax = len(samples))
mh = mexican_hat_with_sigma(sigma)
som.train(target = samples[index], rate = learn_rate,
distance = euclidean, nf = mh)
# query
for sample in samples:
winner = som.query(target = sample, distance = euclidean)
print(winner)
projection = {
'_id': False,
'title': True,
'runtime': True,
'metacritic': True,
'tomato.rating': True,
'year': True,
'awards.wins': True
}
brute_data = conn.find_docs(collec='movieDetails', f=filtro, p=projection)
print("...Recuperados datos en bruto...")
# Limpia y estandariza la data
clean_data = cleaner(brute_data)
data = [list(map(standarize, lst)) for lst in clean_data]
print("...Creando una SOM...")
topo = len(data[0])
red = SOM(100, 100, topo)
print("...Entrenando la red...")
red.train(clean_data, L0=0.8, lam=1e2, sigma0=10)
print("...Construyendo gráfico en 2D...")
for p in red.som:
build_JSON_coor(p, 'son_map')
print("...Calculando el error de cálculo...")
print(red.quant_err())