def generate(self):
if not self.trained:
print(
"This Markov chain is not trained! Please use some dataset to train it first!"
)
return
generated = []
prefix = "<START>"
while True:
# generate next_word according to prefix
prefix_cond_prob = self.cond_prob[prefix]
sampler = Sampler()
sampler.fit(prefix_cond_prob.keys(), prefix_cond_prob.values())
next_ = sampler.generate()
generated.append(next_)
if next_ == "<END>":
break
# update prefix
try:
prefix = ''.join(generated[-self.order:])
except IndexError:
prefix = ''.join(generated)
password = ''.join(generated[:-1])
return password
class HMM4():
"""
When fitted, useful member variables will include:
self.states, self.IS, self.SS, self.OB, self.LD
MEMO:
HMM4的问题是，一不能利用字符级别的上下文，二没有个人信息
改进方向一：使用n-gram改进
改进方向二：看一看targeted Markov
这专利8太行，害得重新看看HMM思索一下
"""
def __init__(self):
### define hidden states
self.states = {
0: "letter",
1: "number",
2: "char"
}
self.trained = False
def fit(self, ts):
"""
param ts: training set
output states: hidden states
output IS: initial state matrix
output SS: state shift matrix
output OB: observation matrix
output LD: length distribution
"""
ts_n = len(ts)
states_n = len(self.states)
def stateof(s):
"""
封装一下每个hidden state的判断条件，以后就改这里就完事了
"""
if s.isalpha():
return 0
elif s.isdigit():
return 1
elif not s.isalnum():
return 2
def isstate(s, state):
return stateof(s) == state
### Count initial state distribution
print("Counting initial state distribution...")
self.IS = np.zeros(states_n)
for password in tqdm(ts):
init_state = stateof(password[0])
self.IS[init_state] += 1
self.IS /= ts_n
### Count 1-gram state shift situation
print("Counting 1-gram state shift situation...")
self.SS = np.zeros((states_n, states_n))
for password in tqdm(ts):
pswd_n = len(password)
for i in range(pswd_n - 1):
self.SS[stateof(password[i]), stateof(password[i+1])] += 1
for state in self.states:
self.SS[state] /= sum(self.SS[state])
### Count observation probability
print("Counting observation probability...")
self.OB = {}
for state in self.states:
self.OB[state] = {}
for password in tqdm(ts):
for ob in password:
state_OB = self.OB[stateof(ob)]
state_OB[ob] = state_OB.get(ob, 0) + 1
for state in self.states:
state_OB = self.OB[state]
state_ob_count = sum(state_OB.values())
for ob in state_OB:
state_OB[ob] /= state_ob_count
### Count length distribution
print("Counting length distribution...")
self.LD = {}
for password in tqdm(ts):
l = len(password)
self.LD[l] = self.LD.get(l, 0) + 1
for k in self.LD:
self.LD[k] /= ts_n
### Setting samplers
print("Setting samplers...")
self.length_sampler = Sampler().fit(
list(self.LD.keys()), list(self.LD.values())
)
self.IS_sampler = Sampler().fit(
list(self.states.keys()), list(self.IS)
)
self.SS_samplers = [Sampler().fit(
list(self.states.keys()), list(self.SS[state]))
for state in self.states]
self.OB_samplers = [Sampler().fit(
list(self.OB[state].keys()), list(self.OB[state].values()))
for state in self.states]
self.trained = True
return self
def generate(self):
if not self.trained:
print("This HMM is not trained! Please use some dataset to train it first!")
return
length = self.length_sampler.generate()
cur_state = self.IS_sampler.generate()
tmp_password = ""
for _ in range(length):
observation = self.OB_samplers[cur_state].generate()
tmp_password += observation
cur_state = self.SS_samplers[cur_state].generate()
return tmp_password
# if __name__ == "__main__":
# toy_training_set = load_csdn()
# print("Training HMM4...")
# hmm4 = HMM4().fit(toy_training_set)
# with open("../model/hmm4.pk", "wb") as f:
# pickle.dump(hmm4, f)
# # Generate passwords
# print("Password generated: ")
# for _ in range(100):
# generated_password = hmm4.generate()
# print(generated_password)
from sampler import Sampler
if __name__ == '__main__':
sampler = Sampler(z_dim=4, c_dim=3, scale=8.0, net_size=64)
z1 = sampler.generate_z()
img = sampler.generate(z1)
sampler.show_image(img)
from timeit import default_timer as timer
import numpy as np
sampler = Sampler(z_dim=20, c_dim=3, scale=8.0, net_size=30)
z_dim = 20
z1 = z = np.random.uniform(-1.0, 1.0, size=(1, z_dim)).astype(np.float32)
#z2 = z = np.random.uniform(-1.0, 1.0, size=(1, z_dim)).astype(np.float32)
#sampler.save_anim_gif(z1,z2, "out",n_frame=2,duration2=0.5)
for i in range(0, 100):
print("Step: {}".format(i))
image1 = sampler.train(
z=z1,
image_path="c:/git/NetDrawer/cppn-tensorflow/source/obammers.jpg")
#sampler.show_image(image1)
if (i % 20 == 0):
image = sampler.generate(z=z1)
sampler.show_image(image)
image = sampler.generate(z=z1)
sampler.show_image(image)
# for i in range(0,100):
# start = timer()
#
# for idx in range(z1.__len__()):
# z1[idx] -=0.01
# image = sampler.generate(z1,x_dim=512, y_dim=512)
#
# sampler.show_image(image)
# end = timer()
# print(end - start)
diff = z1 - z2
#i = 1/0
outnum = 3
outpath = 'output'
singleCycle = 500
cycles = 6000
sound = np.zeros((singleCycle))
data = np.zeros((singleCycle * cycles))
delta = diff / cycles
#a = s.generate(z = (z1 + delta * j), x_dim = 2001, y_dim = 2001, scale = 10)
a = s.generate(z=(z1), x_dim=2001, y_dim=2001, scale=10)
b = np.zeros_like(a)
circleCount = 0
#with open('soundArray.npy','r' ) as f:
# data = np.load(f)
for j in range(0, cycles):
#spiral = ((np.pi * 200) / ) * j
offset1 = np.sin(j * 1.0 / 200)
offset2 = np.cos(j * 1.0 / 200)
def _main(args):
file = Path(args.name)
sampler = Sampler(file=file, records=args.records, max_id=args.max_id)
sampler.generate(Bar("Processing", max=args.records))