def construct_tree(tree):
# tree: {index1:{'parent':, 'maxL':, 'vec':}
# 1. ini tree node
index2node = {}
for i in tree:
node = BU_RvNN.NodeTweet(idx=i)
index2node[i] = node
# 2. construct tree
_j = 0
root = None
for _j in tree:
index_c = _j
index_p = tree[_j]['parent']
node_c = index2node[index_c]
word_freq, word_index = str2matrix(tree[_j]['vec'], tree[_j]['maxL'])
node_c.index = word_index
node_c.word = word_freq
# not root node
if not index_p == 'None':
node_p = index2node[int(index_p)]
node_c.parent = node_p
node_p.children.append(node_c)
# root node
else:
root = node_c
# 3. convert tree to DNN input
degree = tree[_j]['max_degree']
x_word, x_index, tree = BU_RvNN.gen_nn_inputs(root, max_degree=degree, only_leaves_have_vals=False)
return x_word, x_index, tree
def constructTree(tree):
## 1. ini tree node
index2node = {}
for i in tree:
node = BU_RvNN.Node_tweet(idx=i)
index2node[i] = node
## 2. construct tree
for j in tree:
indexC = j
indexP = tree[j]['parent']
nodeC = index2node[indexC]
wordFreq, wordIndex = str2matrix(tree[j]['vec'], tree[j]['maxL'])
nodeC.index = wordIndex
nodeC.word = wordFreq
## not root node ##
if not indexP == 'None':
nodeP = index2node[int(indexP)]
nodeC.parent = nodeP
nodeP.children.append(nodeC)
## root node ##
else:
root = nodeC
## 3. convert tree to DNN input
degree = tree[j]['max_degree']
x_word, x_index, tree = BU_RvNN.gen_nn_inputs(root, max_degree=degree, only_leaves_have_vals=False)
return x_word, x_index, tree
c += 1
print (l1,l2,l3,l4)
print ("train no:", len(tree_train), len(word_train), len(index_train),len(y_train))
print ("test no:", len(tree_test), len(word_test), len(index_test), len(y_test))
print ("dim1 for 0:", len(tree_train[0]), len(word_train[0]), len(index_train[0]))
print ("case 0:", tree_train[0][0], word_train[0][0], index_train[0][0])
#exit(0)
return tree_train, word_train, index_train, y_train, tree_test, word_test, index_test, y_test
##################################### MAIN ####################################
## 1. load tree & word & index & label
tree_train, word_train, index_train, y_train, tree_test, word_test, index_test, y_test = loadData()
## 2. ini RNN model
t0 = time.time()
model = BU_RvNN.RvNN(vocabulary_size, hidden_dim, Nclass)
t1 = time.time()
print ('Recursive model established,', (t1-t0)/60)
#if os.path.isfile(modelPath):
# load_model_Recursive_gruEmb(modelPath, model)
######debug here######
#print len(tree_test[121]), len(index_test[121]), len(word_test[121])
#print tree_test[121]
#exit(0)
#loss, pred_y = model.train_step_up(word_test[121], index_test[121], tree_test[121], y_test[121], lr)
#print loss, pred_y
#exit(0)
######################
## 3. looping SGD
def run(_vocabulary_size, _hidden_dim, _n_class, _n_epoch, _learning_rate,
_label_path, _tree_path, _train_path, _test_path, _eid_pool):
# 1. load tree & word & index & label
tree_train, word_train, index_train, y_train, tree_test, word_test, index_test, y_test = load_data(
_label_path, _tree_path, _train_path, _test_path, _eid_pool
)
# 2. ini RNN model
t0 = time.time()
model = BU_RvNN.RvNN(_vocabulary_size, _hidden_dim, _n_class)
t1 = time.time()
print('Recursive model established,', (t1 - t0) / 60)
# if os.path.isfile(modelPath):
# load_model_Recursive_gruEmb(modelPath, model)
# debug here
# print len(tree_test[121]), len(index_test[121]), len(word_test[121])
# print tree_test[121]
# exit(0)
# loss, pred_y = model.train_step_up(word_test[121], index_test[121], tree_test[121], y_test[121], lr)
# print loss, pred_y
# exit(0)
# 3. looping SGD
losses_5, losses = [], []
num_examples_seen = 0
for epoch in range(_n_epoch):
# one SGD
indexes = [i for i in range(len(y_train))]
random.shuffle(indexes)
for i in indexes:
# print i,
loss, pred_y = model.train_step_up(word_train[i], index_train[i], tree_train[i], y_train[i], _learning_rate)
# print loss, pred_y
losses.append(loss)
num_examples_seen += 1
print("epoch=%d: loss=%f" % (epoch, np.mean(losses)))
# floss.write(str(time)+": epoch="+str(epoch)+" loss="+str(loss) +'\n')
sys.stdout.flush()
# cal loss & evaluate
if epoch % 5 == 0:
losses_5.append((num_examples_seen, np.mean(losses)))
time_now = datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S')
print(
"%s: Loss after num_examples_seen=%d epoch=%d: %f" %
(time_now, num_examples_seen, epoch, np.mean(losses))
)
# floss.write(str(time)+": epoch="+str(epoch)+" loss="+str(loss) +'\n')
# floss.flush()
sys.stdout.flush()
prediction = []
for j in range(len(y_test)):
# print j
prediction.append(model.predict_up(word_test[j], index_test[j], tree_test[j]))
res = evaluation_4class(prediction, y_test)
print('results:', res)
# floss.write(str(res)+'\n')
# floss.flush()
sys.stdout.flush()
# Adjust the learning rate if loss increases
if len(losses_5) > 1 and losses_5[-1][1] > losses_5[-2][1]:
_learning_rate = _learning_rate * 0.5
print("Setting learning rate to %f" % _learning_rate)
# floss.write("Setting learning rate to:"+str(lr)+'\n')
# floss.flush()
sys.stdout.flush()
# save_model_Recursive_gruEmb(modelPath, model)
sys.stdout.flush()
losses = []