def build_model(weights=None,
embedding_size=256,
recurrent_gate_size=512,
n_features=5,
dropout=0.4):
"""
build_model
Inputs:
weights - Path to a weights file to load, or None if the model should be built from scratch
embedding_size - Size of the embedding layer
recurrent_gate_size - Size of the gated recurrent layer
n_features - Number of features for the embedding layer
dropout - Dropout value
Returns:
A model object ready for training (or evaluation if a previous model was loaded via `weights`)
"""
# vvvvv
#Modify this if you want to change the structure of the network!
# ^^^^^
model_layers = [
Embedding(size=embedding_size, n_features=n_features),
GatedRecurrent(size=recurrent_gate_size, p_drop=dropout),
Dense(size=1, activation='sigmoid', p_drop=dropout)
]
model = RNN(layers=model_layers,
cost='BinaryCrossEntropy',
verbose=2,
updater='Adam')
if weights: #Just load the provided model instead, I guess?
model = load(weights)
return model
def test():
model_name = "resources/DeepLincM5.pkl.90"
from tests import load_test_seqs
from passage.utils import load
from evaluate import batch_predict
seqs = load_test_seqs()
mrnn = load(model_name)
for p in batch_predict([mrnn], seqs):
print p
def sentiment_scorer():
"""
INPUT: None
Returns the previously trained RNN sentiment scoring model and the tokenizer used
"""
print "\nLoading tokenizer"
with open('review_tokenizer.pkl', 'r') as fileObject:
tokenizer = pickle.load(fileObject)
print "\nLoading Recurrent Neral Network model"
model = load('review_scorer.pkl')
print "\nDone loading models"
return model, tokenizer
def sentiment_scorer():
"""
INPUT: None
Returns the previously trained RNN sentiment scoring model and the tokenizer used
"""
print "\nLoading tokenizer"
with open('review_tokenizer.pkl','r') as fileObject:
tokenizer = pickle.load(fileObject)
print "\nLoading Recurrent Neral Network model"
model = load('review_scorer.pkl')
print "\nDone loading models"
return model, tokenizer
teX = tokenizer.transform(teX)
print tokenizer.n_features
layers = [
Embedding(size=128, n_features=tokenizer.n_features),
GatedRecurrent(size=256, activation='tanh', gate_activation='steeper_sigmoid', init='orthogonal', seq_output=False),
Dense(size=1, activation='sigmoid', init='orthogonal') # sigmoid for binary classification
]
model = RNN(layers=layers, cost='bce') # bce is classification loss for binary classification and sigmoid output
for i in range(2):
model.fit(trX, trY, n_epochs=1)
tr_preds = model.predict(trX[:len(teY)])
te_preds = model.predict(teX)
tr_acc = metrics.accuracy_score(trY[:len(teY)], tr_preds > 0.5)
te_acc = metrics.accuracy_score(teY, te_preds > 0.5)
print i, tr_acc, te_acc
save(model, 'save_test.pkl') # How to save
model = load('save_test.pkl') # How to load
tr_preds = model.predict(trX[:len(teY)])
te_preds = model.predict(teX)
tr_acc = metrics.accuracy_score(trY[:len(teY)], tr_preds > 0.5)
te_acc = metrics.accuracy_score(teY, te_preds > 0.5)
print tr_acc, te_acc
def train(X, y):
from keras.layers.embeddings import Embedding
from keras.layers.recurrent import LSTM, GRU, SimpleRNN
from keras.layers.core import Dense
from keras.models import Sequential
from keras.layers.core import Dropout
from keras.preprocessing.text import Tokenizer
from keras.preprocessing.sequence import pad_sequences
from math import e
vocab = 10000
tokenizer = Tokenizer(nb_words=vocab)
tokenizer.fit_on_texts(X)
X = tokenizer.texts_to_sequences(X)
"""
index_word = {v: k for k, v in tokenizer.word_index.items()}
for i in range(1, 10001):
print str(i) + "," + index_word[i]
return
"""
maxlen = 50
X1 = []
y1 = []
for thing, target in zip(X, y):
if len(thing) != 0:
X1.append(thing)
y1.append(target)
X = X1
y = y1
KERAS = False
if KERAS:
X = pad_sequences(X, maxlen=maxlen)
from random import shuffle
xy = zip(X, y)
shuffle(xy)
X_s, y_s = zip(*xy)
X_train, y_train, X_test, y_test = X_s[:-1000], y_s[:-1000], X_s[
-1000:], y_s[-1000:]
embedding_size = 256
dropout = .3
batch_size = 256
recurrent_gate_size = 512
"""
model = Sequential()
model.add(Embedding(vocab, embedding_size, mask_zero=True))
model.add(Dropout(dropout))
model.add(LSTM(recurrent_gate_size))
model.add(Dropout(dropout))
model.add(Dense(1))
print "building model..."
model.compile(loss="msle", optimizer="rmsprop")
print "fitting model"
#model.load_weights("mymodel")
model.fit(np.asarray(X_train), np.asarray(y_train), nb_epoch=30, verbose=1, batch_size=batch_size, validation_data=(np.asarray(X_test), np.asarray(y_test)))
model.save_weights("mymodel")
"""
from passage.preprocessing import Tokenizer, LenFilter
from passage.layers import Embedding, GatedRecurrent, Dense, OneHot, LstmRecurrent
from passage.models import RNN
from passage.utils import save, load
from passage.iterators import Padded
layers = [
# OneHot(n_features=5),
Embedding(size=embedding_size, n_features=vocab),
# GatedRecurrent(size=recurrent_gate_size, seq_output=True, p_drop=dropout),
# LstmRecurrent(size=recurrent_gate_size, p_drop=dropout),
GatedRecurrent(size=recurrent_gate_size, p_drop=dropout),
Dense(size=8, activation='softmax', p_drop=dropout)
]
print >> sys.stderr, "learning model"
model_iterator = Padded()
model = load("mymodel.final.pkl")
#model = RNN(layers=layers, cost='CategoricalCrossEntropy', verbose=2, updater="Adam")
filter = LenFilter(max_len=maxlen)
model.fit(np.asarray(X_train),
np.asarray(y_train),
batch_size=batch_size,
n_epochs=1000,
path="mymodel.pkl",
snapshot_freq=49,
len_filter=filter)
save(model, "mymodel.final.pkl")
# print "test cost"
# print model._cost(np.asarray(X_test), np.asarray(y_test))
print "test accuracy"
passage_batch_predict(np.asarray(X_train), np.asarray(y_train), model)
exit = False
print "enter a sentence"
while not exit:
text = raw_input()
if text == "exit":
break
else:
tokens = tokenizer.texts_to_sequences([text])
if len(tokens) == 0:
print "Sentence too strange, try again"
continue
if KERAS:
tokens = pad_sequences(tokens, maxlen=maxlen)
prediction = np.argmax(model.predict(tokens)[0])
try:
print e**(prediction - 2)
except Exception:
pass
ntest=1000) # Can increase up to 250K or so
print len(trX), len(trY), len(teX), len(teY)
print teX.shape()
tokenizer = Tokenizer(min_df=10, max_features=50000)
#print trX[1] # see a blog example
trX = tokenizer.fit_transform(trX)
text = "Evropa je v jeho politika naprosto impotent ."
teX = tokenizer.transform(text)
print "number of tokens:" + str(len(trX))
print "number of feathures:" + str(tokenizer.n_features)
layers = [
Embedding(size=256, n_features=tokenizer.n_features),
GatedRecurrent(size=512, p_drop=0.2),
Dense(size=10, activation='softmax', p_drop=0.5)
]
model = RNN(
layers=layers, cost='cce'
) # bce is classification loss for binary classification and sigmoid output
model = load('modelEcho.pkl') # How to load
te_pred = model.predict(teX)
#tr_acc = metrics.accuracy_score(trY[:len(teY)], tr_preds > 0.5)
#te_acc = metrics.accuracy_score(teY, te_preds > 0.5)
print te_pred
# -*- coding: utf-8 -*-
from settings import getSettings
settings = getSettings()
# from passage.preprocessing import Tokenizer
from passage.utils import load
# ---
tokenizer = load(settings['FN_TRAINED_TOKENIZER'])
model = load(settings['FN_MODEL_NEXTWORDPRED'])
while(True):
sentence = raw_input('>')
model.predict(tokenizer.transform(sentence))
print 'best next word for <%s>: None' % (sentence)
import io
import random
import sys
try:
import cPickle as pickle
except:
import pickle
from passage.preprocessing import Tokenizer
from passage.layers import Embedding, GatedRecurrent, Dense
from passage.models import RNN
from passage.utils import save, load
random.seed(0)
testfile, modelfile, tokenizerfile = sys.argv[1:]
test_text = []
with io.open(testfile, 'r', encoding='utf8') as fin:
for text in fin:
test_text.append(text.strip())
tokenizer = pickle.load(open(tokenizerfile, 'rb'))
model = load(modelfile)
results = model.predict(tokenizer.transform(test_text))
for r in results:
print (int(r>=0.5))
#!/usr/bin/env python
# coding=utf-8
from passage.preprocessing import Tokenizer
from passage.layers import Embedding, GatedRecurrent, Dense
from passage.models import RNN
from passage.utils import save, load
train_text = ['hello world','foo bar']
train_labels = [0,1]
test_text = ['good man']
tokenizer = Tokenizer()
train_tokens = tokenizer.fit_transform(train_text)
layers = [
Embedding(size=128, n_features=tokenizer.n_features),
GatedRecurrent(size=128),
Dense(size=1, activation='sigmoid')
]
model = RNN(layers=layers, cost='BinaryCrossEntropy')
model.fit(train_tokens, train_labels)
print model.predict(tokenizer.transform(test_text))
save(model, 'save_test.pkl')
model = load('save_test.pkl')
num_feats = len(set(flatten(train_tokens)))
def get_labels(id):
if id == 3:
return [1, 0]
else:
return [0, 1]
seq_labels = map(lambda (l): map(get_labels, l), train_tokens)
layers = [
Embedding(size=128, n_features=num_feats),
GatedRecurrent(size=128, seq_output=True),
Dense(size=num_feats, activation='softmax')
]
#iterator = SortedPadded(y_pad=True, y_dtype=intX)
#iterator = SortedPadded(y_dtype=intX)
#model = RNN(layers=layers, cost='seq_cce', iterator=iterator, Y=T.imatrix())
model = RNN(layers=layers, cost='seq_cce')
#model.fit(train_tokens, [1,0,1])
model.fit(train_tokens, train_tokens)
#model.predict(tokenizer.transform(["Frogs are awesome", "frogs are amphibious"]))
model.predict(train_tokens)
save(model, 'save_test.pkl')
model = load('save_test.pkl')
""" This model, although doing sequential prediction, predicts a tag per document not per word. """
model = load(modelfile_name + '.pkl')
results = model.predict(train_tokens)
count = 0
for r, g in zip(results, train_labels):
if int(r>=0.5) == int(g):
count+=1
results = 1.0 * count /len(train_labels)
print (modelfile_name + '\t' + str(results))
'''
models = []
predictions =[]
for embedding_size, gru_size, num_epochs in best_hyperparams:
modelfile_name = 'stubborn_model.gridsearch.embedding{}.gru{}.epoch{}'.format(embedding_size, gru_size, num_epochs)
model = load(modelfile_name + '.pkl')
models.append(model)
with io.open('ensemble.train', 'w') as fout:
for instance, label in zip(train_tokens, train_labels):
line = " ".join([str(model.predict([instance])[0][0]) for model in models])
fout.write(unicode(line + " " + str(label) + '\n'))
testfile = 'cwi_test.lemmatized.txt'
test_text = []
with io.open(testfile, 'r', encoding='utf8') as fin:
for text in fin:
test_text.append(text.strip())
test_tokens = tokenizer.transform(test_text)
print "Loading tagger..."
taggerMorp = Tagger.load(sys.argv[1])
if not taggerMorp:
sys.stderr.write("Cannot load tagger from file '%s'\n" % sys.argv[1])
sys.exit(1)
# Init RNN
print "Loading RNN..."
tokenizerRNN = pickle.load(open('tokenizer.pkl', 'rb'))
layers = [
Embedding(size=256, n_features=tokenizerRNN.n_features),
GatedRecurrent(size=512, p_drop=0.2),
Dense(size=10, activation='softmax', p_drop=0.5)
]
model = RNN(
layers=layers, cost='cce'
) # bce is classification loss for binary classification and sigmoid output
model = load(sys.argv[2]) # How to load
print "RNN loaded"
s.listen(10)
print 'Socket now listening'
#######################################################################################################
while 1:
conn, addr = s.accept()
print 'Connected with ' + addr[0] + ':' + str(addr[1])
start_new_thread(clientthread, (conn, ))
s.close()