我是新手,正在尝试将一些代码从旧版本的tensorflow更新到最新版本(1.0)的双向LSTM。但是我遇到了以下错误:
形状必须为2级,但对于'MatMul_3'(操作:'MatMul'),形状为3级,输入形状为[100,?,400],[400,2]。
在pred_mod上出现错误。
_weights = {
# Hidden layer weights => 2*n_hidden because of foward + backward cells
'w_emb' : tf.Variable(0.2 * tf.random_uniform([max_features,FLAGS.embedding_dim], minval=-1.0, maxval=1.0, dtype=tf.float32),name='w_emb',trainable=False),
'c_emb' : tf.Variable(0.2 * tf.random_uniform([3,FLAGS.embedding_dim],minval=-1.0, maxval=1.0, dtype=tf.float32),name='c_emb',trainable=True),
't_emb' : tf.Variable(0.2 * tf.random_uniform([tag_voc_size,FLAGS.embedding_dim], minval=-1.0, maxval=1.0, dtype=tf.float32),name='t_emb',trainable=False),
'hidden_w': tf.Variable(tf.random_normal([FLAGS.embedding_dim, 2*FLAGS.num_hidden])),
'hidden_c': tf.Variable(tf.random_normal([FLAGS.embedding_dim, 2*FLAGS.num_hidden])),
'hidden_t': tf.Variable(tf.random_normal([FLAGS.embedding_dim, 2*FLAGS.num_hidden])),
'out_w': tf.Variable(tf.random_normal([2*FLAGS.num_hidden, FLAGS.num_classes]))}
_biases = {
'hidden_b': tf.Variable(tf.random_normal([2*FLAGS.num_hidden])),
'out_b': tf.Variable(tf.random_normal([FLAGS.num_classes]))}
#~ input PlaceHolders
seq_len = tf.placeholder(tf.int64,name="input_lr")
_W = tf.placeholder(tf.int32,name="input_w")
_C = tf.placeholder(tf.int32,name="input_c")
_T = tf.placeholder(tf.int32,name="input_t")
mask = tf.placeholder("float",name="input_mask")
# Tensorflow LSTM cell requires 2x n_hidden length (state & cell)
istate_fw = tf.placeholder("float", shape=[None, 2*FLAGS.num_hidden])
istate_bw = tf.placeholder("float", shape=[None, 2*FLAGS.num_hidden])
_Y = tf.placeholder("float", [None, FLAGS.num_classes])
#~ transfortm into Embeddings
emb_x = tf.nn.embedding_lookup(_weights['w_emb'],_W)
emb_c = tf.nn.embedding_lookup(_weights['c_emb'],_C)
emb_t = tf.nn.embedding_lookup(_weights['t_emb'],_T)
_X = tf.matmul(emb_x, _weights['hidden_w']) + tf.matmul(emb_c, _weights['hidden_c']) + tf.matmul(emb_t, _weights['hidden_t']) + _biases['hidden_b']
inputs = tf.split(_X, FLAGS.max_sent_length, axis=0, num=None, name='split')
lstmcell = tf.contrib.rnn.BasicLSTMCell(FLAGS.num_hidden, forget_bias=1.0,
state_is_tuple=False)
bilstm = tf.contrib.rnn.static_bidirectional_rnn(lstmcell, lstmcell, inputs,
sequence_length=seq_len, initial_state_fw=istate_fw, initial_state_bw=istate_bw)
pred_mod = [tf.matmul(item, _weights['out_w']) + _biases['out_b'] for item in bilstm]
需要任何帮助都可以。
tf.matmul()
可以执行单个矩阵乘法或批量矩阵乘法,但它需要有关形状的信息才能知道应该执行哪种乘法。 - mrry