コード例 #1
0
    def testFeedPartialShapes(self):
        with self.test_session(use_gpu=False):
            # Incorporate new rank into shape information if known
            sp_input = self._SparseTensorPlaceholder()
            sp_output = tf.sparse_reshape(sp_input, [2, 3, 5])
            self.assertListEqual(sp_output.indices.get_shape().as_list(),
                                 [None, 3])
            self.assertListEqual(sp_output.dense_shape.get_shape().as_list(),
                                 [3])

            # Incorporate known shape information about input indices in output
            # indices
            sp_input = self._SparseTensorPlaceholder()
            sp_input.indices.set_shape([5, None])
            sp_output = tf.sparse_reshape(sp_input, [2, 3, 5])
            self.assertListEqual(sp_output.indices.get_shape().as_list(),
                                 [5, 3])
            self.assertListEqual(sp_output.dense_shape.get_shape().as_list(),
                                 [3])

            # Even if new_shape has no shape information, we know the ranks of
            # output indices and shape
            sp_input = self._SparseTensorPlaceholder()
            sp_input.indices.set_shape([5, None])
            new_shape = tf.placeholder(tf.int64)
            sp_output = tf.sparse_reshape(sp_input, new_shape)
            self.assertListEqual(sp_output.indices.get_shape().as_list(),
                                 [5, None])
            self.assertListEqual(sp_output.dense_shape.get_shape().as_list(),
                                 [None])
コード例 #2
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def lookup_char_emb(text,c2v_vocab, c2v_emb, dim_c2v_emb):
    str_tensor = tf.string_split(text)
    str_split = tf.sparse_reshape(str_tensor,[-1])
    str_split,text_mask = tf.sparse_fill_empty_rows(str_split,"")
    #return str_split
    #str_split = tf.sparse_tensor_to_dense(str_split,default_value="")
    #char_split = tf.string_split(str_split.values,'')
    char_split = tf.string_split(str_split.values,'')
    #return char_split
    #return tf.SparseTensor(indices=tf.stack([str_split.indices,res.indices],axis=1),values = res.values, dense_shape=tf.stack([str_split.dense_shape[0],str_split.dense_shape[1],res.dense_shape[0], res.dense_shape[1]]))
    #return char_split
    #char_tensor_indices = tf.transpose(tf.stack([tf.gather(str_split.indices[:,0],char_split.indices[:,0]),tf.gather(str_split.indices[:,1],char_split.indices[:,0])]))
    char_tensor = tf.SparseTensor(indices = char_split.indices, values = c2v_vocab.lookup(char_split.values), dense_shape = char_split.dense_shape)
    #return char_tensor
    #char_tensor = tf.SparseTensor(indices = char_split.indices, values = char_dict.lookup(char_split.values), dense_shape = char_split.dense_shape)
    char_tensor_reshape = tf.sparse_reshape(char_tensor,[-1])
    char_tensor,term_mask = tf.sparse_fill_empty_rows(char_tensor_reshape,0)
    #return char_tensor
    char_vecs = tf.nn.embedding_lookup_sparse(c2v_emb, char_tensor, None, combiner='sum')
    char_vecs = tf.where(~term_mask, char_vecs, tf.zeros_like(char_vecs))
    #return char_vecs
    term_char_vecs = tf.reshape(char_vecs, shape = tf.stack([tf.shape(text)[0],tf.cast(tf.reduce_max(str_tensor.indices[:,1])+1,tf.int32),-1,tf.shape(char_vecs)[-1]]))
    term_char_mask_tmp = tf.reduce_sum(term_char_vecs,axis=-1)
    term_char_mask = ~tf.equal(term_char_mask_tmp,0)
    term_char_len = tf.cast(tf.count_nonzero(term_char_mask,axis=-1),tf.int32)
    text_mask = ~tf.equal(tf.reduce_sum(term_char_mask_tmp,axis=-1),0)
    text_len = tf.cast(tf.count_nonzero(text_mask,axis=-1),tf.int32)
    return term_char_vecs, term_char_mask, term_char_len, text_mask, text_len
コード例 #3
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ファイル: models.py プロジェクト: freekang/GraphSAGE_RL
    def sparse_loss_to_node(self, samples, support_size, num_samples):
        
        batch_size = self.batch_size
        
        length = sum(support_size[1:])*batch_size
        node_dim = self.loss_node.get_shape().as_list()

        #discount = .9
        for k in range(1, 2):
        #for k in range(1, len(samples)):

            #import pdb
            #pdb.set_trace()

            x = tf.reshape(tf.tile(tf.expand_dims(samples[k-1], -1), [1, tf.cast(support_size[k]/support_size[k-1], tf.int32)]), [-1])
            x = tf.cast(x, tf.int64)
            y = samples[k]
            y = tf.cast(y, tf.int64)
            idx = tf.expand_dims(x*node_dim[0] + y,1)
        
            #loss = (discount**(k-1))*tf.reshape(tf.tile(tf.expand_dims(tf.reduce_sum(self.cross_entropy, 1), -1), [1, support_size[k]]), [-1])
            loss = tf.reshape(tf.tile(tf.expand_dims(self.loss_node_, -1), [1, support_size[k]]), [-1])
            scatter1 = tf.SparseTensor(idx, loss, tf.constant([node_dim[0]*node_dim[1]], dtype=tf.int64))
            scatter1 = tf.sparse_reshape(scatter1, tf.constant([node_dim[0], node_dim[1]]))
            self.loss_node = tf.sparse_add(self.loss_node, scatter1)


            ones = tf.reshape(tf.tile(tf.expand_dims(tf.ones(batch_size), -1), [1, support_size[k]]), [-1])
            scatter2 = tf.SparseTensor(idx, ones, tf.constant([node_dim[0]*node_dim[1]], dtype=tf.int64))
            scatter2 = tf.sparse_reshape(scatter2, tf.constant([node_dim[0], node_dim[1]]))
            self.loss_node_count = tf.sparse_add(self.loss_node_count, scatter2) 
コード例 #4
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ファイル: layers.py プロジェクト: longyahui/GCATSL
def sp_attn_head(seq,
                 out_sz,
                 adj_mat_local,
                 adj_mat_global,
                 activation,
                 in_drop=0.0,
                 coef_drop=0.0,
                 residual=False):
    with tf.name_scope('my_attn'):
        if in_drop != 0.0:
            seq = tf.nn.dropout(seq, 1.0 - in_drop)
        seq_fts = seq

        latent_factor_size = 8
        nb_nodes = seq_fts.shape[1].value

        w_1 = glorot([seq_fts.shape[2].value, latent_factor_size])
        w_2 = glorot([3 * seq_fts.shape[2].value, latent_factor_size])

        f_1 = tf.layers.conv1d(seq_fts, 1, 1)
        f_2 = tf.layers.conv1d(seq_fts, 1, 1)

        #local neighbours
        logits = tf.add(f_1[0], tf.transpose(f_2[0]))
        logits_first = adj_mat_local * logits
        lrelu = tf.SparseTensor(indices=logits_first.indices,
                                values=tf.nn.leaky_relu(logits_first.values),
                                dense_shape=logits_first.dense_shape)
        coefs = tf.sparse_softmax(lrelu)

        coefs = tf.sparse_reshape(coefs, [nb_nodes, nb_nodes])
        seq_fts = tf.squeeze(seq_fts)
        neigh_embs = tf.sparse.sparse_dense_matmul(coefs, seq_fts)

        #non-local neighbours
        logits_global = adj_mat_global * logits
        lrelu_global = tf.SparseTensor(indices=logits_global.indices,
                                       values=tf.nn.leaky_relu(
                                           logits_global.values),
                                       dense_shape=logits_global.dense_shape)
        coefs_global = tf.sparse_softmax(lrelu_global)

        coefs_global = tf.sparse_reshape(coefs_global, [nb_nodes, nb_nodes])
        neigh_embs_global = tf.sparse.sparse_dense_matmul(
            coefs_global, seq_fts)

        neigh_embs_sum_1 = tf.matmul(
            tf.add(tf.add(seq_fts, neigh_embs), neigh_embs_global), w_1)
        neigh_embs_sum_2 = tf.matmul(
            tf.concat(
                [tf.concat([seq_fts, neigh_embs], axis=-1), neigh_embs_global],
                axis=-1), w_2)

        final_embs = activation(neigh_embs_sum_1) + activation(
            neigh_embs_sum_2)

        return final_embs
コード例 #5
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ファイル: model.py プロジェクト: bbnsumanth/MOQA
    def calc_log_loss(self, Pairwise, Question, Answer, Review, TermtoTermR,
                      TermtoTermP, Question_I, Answer_I, Review_I):

        #print 'Doing for item %d'%(i)

        shape1 = tf.shape(Pairwise)
        shape2 = tf.shape(Answer)

        nq = shape1[0]
        nr = shape1[1]
        na = shape2[1]

        pairwise = tf.reshape(Pairwise, [-1, self.PairwiseDim])
        pairwise = tf.reshape(tf.matmul(pairwise, self.theta), [nq, nr])

        termTotermR = tf.sparse_reshape(TermtoTermR, [-1, self.V])
        termTotermR = tf.reshape(
            tf.sparse_tensor_dense_matmul(termTotermR, self.RelvPar), [nq, nr])

        QProj = tf.sparse_tensor_dense_matmul(Question_I, self.A)
        RProjR = tf.sparse_tensor_dense_matmul(Review_I, self.B)
        BilinearR = tf.matmul(QProj, tf.transpose(RProjR))

        Relevance = tf.nn.softmax(pairwise + termTotermR + BilinearR)

        termTotermP = tf.sparse_reshape(TermtoTermP, [-1, self.V])
        termTotermP = tf.reshape(
            tf.sparse_tensor_dense_matmul(termTotermP, self.PredPar),
            [nq, na, nr])

        AProj = tf.sparse_tensor_dense_matmul(
            tf.sparse_reshape(Answer_I, [-1, self.V]), self.X)
        RProjP = tf.sparse_tensor_dense_matmul(Review_I, self.Y)
        BilinearP = tf.reshape(tf.matmul(AProj, tf.transpose(RProjP)),
                               [nq, na, nr])

        Prediction = BilinearP + termTotermP
        Prediction = tf.expand_dims(Prediction[:, 0, :], 1) - Prediction
        Prediction = Prediction[:, 1:, :]
        Prediction = tf.sigmoid(Prediction)

        MoE = tf.reduce_sum(tf.multiply(Prediction,
                                        tf.expand_dims(Relevance, axis=1)),
                            axis=2)
        accuracy_count = tf.cast(tf.shape(tf.where(MoE > 0.5))[0], tf.float64)
        count = nq * na

        log_likelihood = tf.reduce_sum(tf.log(MoE))
        R1 = tf.reduce_sum(tf.square(self.A)) + tf.reduce_sum(tf.square(
            self.B))
        R2 = tf.reduce_sum(tf.square(self.X)) + tf.reduce_sum(tf.square(
            self.Y))

        log_likelihood -= self.Lambda * (R1 + R2)

        return -1 * log_likelihood, MoE, Relevance
コード例 #6
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    def train_filequeue_reader(self, filename_queue):
        (keys, values) = self.train_reader.read_up_to(filename_queue,
                                                      self.config.batch_size)
        label_features = {
            "label_indices": tf.VarLenFeature(dtype=tf.int64),
            "label_values": tf.VarLenFeature(dtype=tf.int64),
            "label_shape": tf.FixedLenFeature([1], dtype=tf.int64),
            "seq_len": tf.FixedLenFeature([1], dtype=tf.int64)
        }
        audio_features = {
            "audio": tf.FixedLenSequenceFeature([self.last_dim],
                                                dtype=tf.float32)
        }
        audio_list = []
        label_list = []
        len_list = []

        for i in range(self.config.batch_size):
            context, sequence = tf.parse_single_sequence_example(
                serialized=values[i],
                context_features=label_features,
                sequence_features=audio_features
            )
            audio = sequence['audio']
            seq_len = context['seq_len']
            label_values = context['label_values']
            label_indices = context['label_indices']
            label_shape = context['label_shape']

            label_indices = tf.sparse_tensor_to_dense(
                tf.sparse_reshape(label_indices, [-1, 1]))
            label_values = tf.sparse_tensor_to_dense(label_values)

            sparse_label = tf.SparseTensor(label_indices, label_values,
                                           label_shape)
            # then we can sparse_concat at axis 0
            sparse_label = tf.sparse_reshape(sparse_label, [1, -1])

            audio_list.append(audio)
            label_list.append(sparse_label)
            len_list.append(seq_len)

        seq_lengths = tf.cast(tf.reshape(tf.stack(len_list, name='seq_lengths'),
                                         (-1,)), tf.int32)
        audio_tensor = tf.stack(audio_list, name='input_audio')
        label_tensor = tf.sparse_concat(0, label_list,
                                        expand_nonconcat_dim=True)

        return audio_tensor, label_tensor, seq_lengths
コード例 #7
0
ファイル: linalg.py プロジェクト: lgeiger/probability
def _sparse_tensor_dense_matmul(sp_a, b, **kwargs):
    """Returns (batched) matmul of a SparseTensor with a Tensor.

  Args:
    sp_a: `SparseTensor` representing a (batch of) matrices.
    b: `Tensor` representing a (batch of) matrices, with the same batch shape of
      `sp_a`. The shape must be compatible with the shape of `sp_a` and kwargs.
    **kwargs: Keyword arguments to `tf.sparse_tensor_dense_matmul`.

  Returns:
    product: A dense (batch of) matrix-shaped Tensor of the same batch shape and
    dtype as `sp_a` and `b`. If `sp_a` or `b` is adjointed through `kwargs` then
    the shape is adjusted accordingly.
  """
    batch_shape = _get_shape(sp_a)[:-2]

    # Reshape the SparseTensor into a rank 3 SparseTensors, with the
    # batch shape flattened to a single dimension. If the batch rank is 0, then
    # we add a batch dimension of rank 1.
    sp_a = tf.sparse_reshape(sp_a,
                             tf.concat([[-1], _get_shape(sp_a)[-2:]], axis=0))
    # Reshape b to stack the batch dimension along the rows.
    b = tf.reshape(b, tf.concat([[-1], _get_shape(b)[-1:]], axis=0))

    # Convert the SparseTensor to a matrix in block diagonal form with blocks of
    # matrices [M, N]. This allow us to use tf.sparse_tensor_dense_matmul which
    # only accepts rank 2 (Sparse)Tensors.
    out = tf.sparse_tensor_dense_matmul(_sparse_block_diag(sp_a), b, **kwargs)

    # Finally retrieve the original batch shape from the resulting rank 2 Tensor.
    # Note that we avoid inferring the final shape from `sp_a` or `b` because we
    # might have transposed one or both of them.
    return tf.reshape(
        out,
        tf.concat([batch_shape, [-1], _get_shape(out)[-1:]], axis=0))
コード例 #8
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ファイル: word_embedding.py プロジェクト: linsu07/QANet
    def call(self, words, **kwargs):
        #e.g [batch_size,sent_number,seq_len]
        context_ids = self.feature_lookup_table.lookup(words)
        if isinstance(context_ids, tf.SparseTensor):
            context_ids = tf.sparse_tensor_to_dense(context_ids,default_value=0,name = "sparseid2dense_C")
        #[batch_size,sent_number,c_seq_len], every sentence real length
        mask = tf.abs(tf.sign(context_ids))
        #[batch_size, sent_number]
        sen_len = tf.reduce_sum(mask, -1)
        #[batch_size,sent_number,c_seq_len,1],
        mask = tf.expand_dims(tf.cast(mask,tf.float32),-1)
        context_embedding = tf.nn.embedding_lookup(self.word_embedding,context_ids)
        context_embedding = tf.layers.dropout(context_embedding,self.dropout_rate,training=self.trainable)

        if self.use_char_embedding :
            chars = kwargs.get("chars")
            shape = tf.shape(chars)
            if isinstance(chars, tf.SparseTensor):
                chars= tf.sparse_reshape(chars,[-1])
                chars = tf.sparse_tensor_to_dense(chars,default_value="0")
            else:
                chars = tf.reshape(chars,[-1])
            chars = tf.string_split(chars,delimiter=",")
            chars_ids = self.char_lookup_table.lookup(chars)
            chars_ids = tf.sparse_tensor_to_dense(chars_ids)
            char_mask = tf.cast(tf.expand_dims(tf.sign(chars_ids),-1),tf.float32)
            char_embedding = tf.nn.embedding_lookup(self.char_embeddding,chars_ids)*char_mask #context_mask cares about this
            char_embedding = tf.layers.dropout(char_embedding,self.dropout_rate*0.5,training=self.trainable)
            char_embedding = self.conv_chars(char_embedding,shape)
            context_embedding = tf.concat([context_embedding,char_embedding],-1)
        context_embedding = self.highway(context_embedding,mask = mask) if self.use_highway else context_embedding*mask

        return context_embedding,sen_len,mask,context_ids
コード例 #9
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ファイル: helpers.py プロジェクト: marcocannici/matrixlstm
 def map_function(x):
     i, dense_slice = x[0], x[1]
     sparse_slice = tf.sparse_reshape(tf.sparse_slice(sp_a, [i, 0, 0],
                                                      [1, sp_a.dense_shape[1], sp_a.dense_shape[2]]),
                                      [sp_a.dense_shape[1], sp_a.dense_shape[2]])
     mult_slice = tf.sparse_tensor_dense_matmul(sparse_slice, dense_slice)
     return mult_slice
コード例 #10
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 def testMismatchedSizesWithInferredDim(self):
   with self.test_session(use_gpu=False) as sess:
     sp_input = self._SparseTensorPlaceholder()
     input_val = self._SparseTensorValue_5x6()
     sp_output = tf.sparse_reshape(sp_input, [4, -1])
     with self.assertRaisesOpError("requested shape requires a multiple"):
       sess.run(sp_output, {sp_input: input_val})
コード例 #11
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 def testMultipleInferredDims(self):
   with self.test_session(use_gpu=False) as sess:
     sp_input = self._SparseTensorPlaceholder()
     input_val = self._SparseTensorValue_5x6()
     sp_output = tf.sparse_reshape(sp_input, [4, -1, -1])
     with self.assertRaisesOpError("only one output shape size may be -1"):
       sess.run(sp_output, {sp_input: input_val})
コード例 #12
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ファイル: utils.py プロジェクト: lionzhu-zhc/FLAIR_seg
def labels_to_onehot(lables, class_num = 1):
    '''
    :param lables:  shape [batchsize, depth, height, width], 4D, no channel axis
    :param class_num:
    :return:
    '''

    if isinstance(class_num, tf.Tensor):
        class_num_tf = tf.to_int32(class_num)
    else:
        class_num_tf = tf.constant(class_num, tf.int32)
    in_shape = tf.shape(lables)
    out_shape = tf.concat([in_shape, tf.reshape(class_num_tf, (1,))], 0) # add a extra axis for classNum, 5D

    if class_num == 1:
        return tf.reshape(lables, out_shape)
    else:
        lables = tf.reshape(lables, (-1,)) # squeeze labels to one row x N cols vector [0,0,0,1,......]
        dense_shape = tf.stack([tf.shape(lables)[0], class_num_tf], 0)   # denshape [N cols , classNum]

        lables = tf.to_int64(lables)
        ids = tf.range(tf.to_int64(dense_shape[0]), dtype= tf.int64)  # ids is a 1xN vector as[0,1,2,3...., N-1]
        ids = tf.stack([ids, lables], axis= 1)  #ids is N x clsNum mat
        one_hot = tf.SparseTensor(indices= ids, values= tf.ones_like(lables, dtype= tf.float32), dense_shape = tf.to_int64(dense_shape))
        one_hot = tf.sparse_reshape(one_hot, out_shape)
        return tf.cast(one_hot, tf.float32)
コード例 #13
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def read_and_decode(filename_queue):
    reader = tf.TFRecordReader()
    _, serialized_example = reader.read(filename_queue)
    features = tf.parse_single_example(serialized_example,
                                       features={
                                           'rows':
                                           tf.FixedLenFeature([], tf.int64),
                                           'label':
                                           tf.FixedLenFeature([], tf.int64),
                                           'one_feature':
                                           tf.VarLenFeature(tf.float32)
                                       })

    one_feature = features['one_feature']
    # The code below does not work, you just cannot cast a SparseTensor
    # one_feature = tf.cast(features['one_feature'], tf.float32)
    """
    for CNN feature: n*4096
    """
    # one_feature = tf.sparse_reshape(one_feature, [-1, 4096])
    """
    for gist feature: n*512
    """
    one_feature = tf.sparse_reshape(one_feature, [-1, 512])
    label = tf.cast(features['label'], tf.int32)
    rows = tf.cast(features['rows'], tf.int32)
    return one_feature, label, rows
コード例 #14
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    def _get_sequence_dense_tensor(self,
                                   inputs,
                                   weight_collections=None,
                                   trainable=None):
        del weight_collections, trainable

        if self.signature != 'sequence':
            raise ValueError(
                'Column {} could not be used as sequence feature column. '
                'Use sequence_text_embedding_column instead'.format(self.name))

        sparse_keys = inputs.get(self)
        sparse_keys.shape.with_rank_at_least(2)
        sparse_keys.shape.with_rank_at_most(3)

        batch_size, max_length = sparse_keys.dense_shape[
            0], sparse_keys.dense_shape[1]
        sparse_keys = tf.sparse_reshape(sparse_keys,
                                        shape=tf.stack(
                                            [batch_size, max_length, -1]))

        dense_tensor = self._hub_module(sparse_keys, signature=self.signature)
        sequence_length = feature_column._sequence_length_from_sparse_tensor(
            inputs.get(self))

        return feature_column._SequenceDenseColumn.TensorSequenceLengthPair(
            dense_tensor=dense_tensor, sequence_length=sequence_length)
コード例 #15
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  def tensors_to_item(self, keys_to_tensors):
    """Maps the given dictionary of tensors to a concatenated list of bboxes.

    Args:
      keys_to_tensors: a mapping of TF-Example keys to parsed tensors.

    Returns:
      [time, num_boxes, 4] tensor of bounding box coordinates, in order
          [y_min, x_min, y_max, x_max]. Whether the tensor is a SparseTensor
          or a dense Tensor is determined by the return_dense parameter. Empty
          positions in the sparse tensor are filled with -1.0 values.
    """
    sides = []
    for key in self._full_keys:
      value = keys_to_tensors[key]
      expanded_dims = tf.concat(
          [tf.to_int64(tf.shape(value)),
           tf.constant([1], dtype=tf.int64)], 0)
      side = tf.sparse_reshape(value, expanded_dims)
      sides.append(side)
    bounding_boxes = tf.sparse_concat(2, sides)
    if self._return_dense:
      bounding_boxes = tf.sparse_tensor_to_dense(
          bounding_boxes, default_value=self._default_value)
    return bounding_boxes
コード例 #16
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    def _parse_function(self, index_list, sp_value, label):

        inputs = tf.SparseTensor(indices=index_list,
                                 values=sp_value,
                                 dense_shape=self.sp_shape)
        inputs = tf.sparse_reshape(inputs, [-1])
        return inputs, label, index_list[:, -1]
コード例 #17
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    def tensors_to_item(self, keys_to_tensors):
        """Maps the given dictionary of tensors to a concatenated list of bboxes.

    Args:
      keys_to_tensors: a mapping of TF-Example keys to parsed tensors.

    Returns:
      [time, num_boxes, 4] tensor of bounding box coordinates, in order
          [y_min, x_min, y_max, x_max]. Whether the tensor is a SparseTensor
          or a dense Tensor is determined by the return_dense parameter. Empty
          positions in the sparse tensor are filled with -1.0 values.
    """
        sides = []
        for key in self._full_keys:
            value = keys_to_tensors[key]
            expanded_dims = tf.concat([
                tf.to_int64(tf.shape(value)),
                tf.constant([1], dtype=tf.int64)
            ], 0)
            side = tf.sparse_reshape(value, expanded_dims)
            sides.append(side)
        bounding_boxes = tf.sparse_concat(2, sides)
        if self._return_dense:
            bounding_boxes = tf.sparse_tensor_to_dense(
                bounding_boxes, default_value=self._default_value)
        return bounding_boxes
コード例 #18
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    def _do_test(self, expected_result, config=None):
        # Make sure that expected_result is an np array
        if not type(expected_result).__module__ == np.__name__:
            expected_result = np.array(expected_result)

        with tf.Graph().as_default():
            inputs, indices, _ = dense_to_sparse(self.input)
            sparse_tensor_reordered = tf.sparse_reorder(inputs)
            sparse_tensor_reshaped = tf.sparse_reshape(sparse_tensor_reordered, self.input.shape)

            W = tf.constant(self.W1, dtype=tf.float32)
            b = tf.constant(self.b1, dtype=tf.float32)

            # Sparse layer
            logits = tf.sparse_tensor_dense_matmul(sparse_tensor_reshaped, W) + b

            # Dense layer
            logits = logits @ tf.constant(self.W2, tf.float32) + tf.constant(self.b2, tf.float32)

            explanation = lrp.lrp(inputs, logits, config)

            with tf.Session() as s:
                expl = s.run(explanation)
                self.assertTrue(np.all(np.equal(indices, expl.indices)),
                                "expected indices did not equal actual indices")
                self.assertTrue(np.allclose(expl.values, expected_result.reshape((-1)), rtol=1.e-3, atol=1.e-3),
                                "expected indices did not equal actual indices")
コード例 #19
0
 def testFeedMultipleInferredDims(self):
   with self.test_session(use_gpu=False) as sess:
     sp_input = self._SparseTensorPlaceholder()
     input_val = self._SparseTensorValue_5x6()
     sp_output = tf.sparse_reshape(sp_input, [4, -1, -1])
     with self.assertRaisesOpError("only one output shape size may be -1"):
       sess.run(sp_output, {sp_input: input_val})
コード例 #20
0
def compute_per_batch_eval_metrics(metrics, predictions, used_labels, labels, indices,
        used_indices, ori_batch_idx, step_idx, config, context):
    new_batch_idx = tf.gather(tf.range(tf.shape(used_indices)[0]), ori_batch_idx)
    new_indices = tf.concat([
        tf.expand_dims(new_batch_idx, 1),
        tf.expand_dims(step_idx, 1),
        tf.slice(indices,
                 begin=[0, 2],
                 size=[tf.shape(indices)[0], 1])],
        axis=1)
    label_shape = tf.shape(labels)
    eval_labels = tf.sparse_reshape(
        tf.SparseTensor(
            tf.cast(new_indices, tf.int64),
            tf.cast(used_labels, tf.int64),
            tf.cast(
                [tf.shape(used_indices)[0], label_shape[1], label_shape[2]],
                tf.int64)
            ),
        [tf.shape(used_indices)[0], label_shape[1] * label_shape[2]])
    ori_predictions = tf.gather(predictions, ori_batch_idx)
    updates = compute_recommendation_metrics(
            metrics, eval_labels, predictions)
    updates += compute_regression_metrics(
            metrics, ori_predictions, used_labels, indices, config, context)
    updates += compute_ranking_metrics(
            metrics, used_indices, new_batch_idx, used_labels, predictions, config)
    return updates
コード例 #21
0
    def testFeedDenseReshapeSemantics(self):
        with self.test_session(use_gpu=False) as sess:
            # Compute a random rank-5 initial shape and new shape, randomly sparsify
            # it, and check that the output of SparseReshape has the same semantics
            # as a dense reshape.
            factors = np.array([2] * 4 + [3] * 4 +
                               [5] * 4)  # 810k total elements
            orig_rank = np.random.randint(2, 7)
            orig_map = np.random.randint(orig_rank, size=factors.shape)
            orig_shape = [
                np.prod(factors[orig_map == d]) for d in range(orig_rank)
            ]
            new_rank = np.random.randint(2, 7)
            new_map = np.random.randint(new_rank, size=factors.shape)
            new_shape = [
                np.prod(factors[new_map == d]) for d in range(new_rank)
            ]

            orig_dense = np.random.uniform(size=orig_shape)
            orig_indices = np.transpose(np.nonzero(orig_dense < 0.5))
            orig_values = orig_dense[orig_dense < 0.5]

            new_dense = np.reshape(orig_dense, new_shape)
            new_indices = np.transpose(np.nonzero(new_dense < 0.5))
            new_values = new_dense[new_dense < 0.5]

            sp_input = self._SparseTensorPlaceholder()
            input_val = tf.SparseTensorValue(orig_indices, orig_values,
                                             orig_shape)
            sp_output = tf.sparse_reshape(sp_input, new_shape)

            output_val = sess.run(sp_output, {sp_input: input_val})
            self.assertAllEqual(output_val.indices, new_indices)
            self.assertAllEqual(output_val.values, new_values)
            self.assertAllEqual(output_val.shape, new_shape)
コード例 #22
0
 def testFeedMismatchedSizesWithInferredDim(self):
   with self.test_session(use_gpu=False) as sess:
     sp_input = self._SparseTensorPlaceholder()
     input_val = self._SparseTensorValue_5x6()
     sp_output = tf.sparse_reshape(sp_input, [4, -1])
     with self.assertRaisesOpError("requested shape requires a multiple"):
       sess.run(sp_output, {sp_input: input_val})
コード例 #23
0
def sp_attn_head(seq,
                 out_sz,
                 adj_mat,
                 adj_all_mat,
                 adj_neig_mat,
                 N_target_mat,
                 activation,
                 nb_nodes,
                 in_drop=0.0,
                 coef_drop=0.0,
                 residual=False):
    with tf.name_scope('sp_attn'):

        if coef_drop != 0.0:
            adj_mat = tf.SparseTensor(indices=adj_mat.indices,
                                      values=tf.nn.dropout(
                                          adj_mat.values, 1.0 - coef_drop),
                                      dense_shape=adj_mat.dense_shape)
            adj_neig_mat = tf.SparseTensor(
                indices=adj_neig_mat.indices,
                values=tf.nn.dropout(adj_neig_mat.values, 1.0 - coef_drop),
                dense_shape=adj_neig_mat.dense_shape)

        if in_drop != 0.0:
            seq = tf.nn.dropout(seq, 1.0 - in_drop)

        seq_fts = tf.layers.conv1d(seq, out_sz, 1, use_bias=False)

        # simplest self-attention possible
        f_1 = tf.layers.conv1d(seq_fts, 1, 1)
        f_2 = tf.layers.conv1d(seq_fts, 1, 1)

        f_1 = tf.reshape(f_1, (nb_nodes, 1))
        f_2 = tf.reshape(f_2, (nb_nodes, 1))

        f_1 = adj_mat * f_1
        f_2 = adj_mat * tf.transpose(f_2, [1, 0])

        logits = tf.sparse_add(f_1, f_2)
        lrelu = tf.SparseTensor(indices=logits.indices,
                                values=tf.nn.leaky_relu(logits.values),
                                dense_shape=logits.dense_shape)
        coefs = tf.sparse_softmax(lrelu)

        if in_drop != 0.0:
            seq_fts = tf.nn.dropout(seq_fts, 1.0 - in_drop)

        coefs = tf.sparse_reshape(coefs, [nb_nodes, nb_nodes])
        seq_fts = tf.squeeze(seq_fts)  ###HW

        out_bi = BILinear_pooling(adj_neig_mat, seq_fts)
        out_bi = dot(N_target_mat, out_bi, True)
        out_gat = tf.sparse_tensor_dense_matmul(coefs, seq_fts)
        vals = (1 - FLAGS.alpha) * out_gat + FLAGS.alpha * out_bi

        vals = tf.expand_dims(vals, axis=0)
        vals.set_shape([1, nb_nodes, out_sz])
        ret = tf.contrib.layers.bias_add(vals)

        return activation(ret)  # activation
コード例 #24
0
ファイル: layers.py プロジェクト: DASE4/CEAD
    def _call(self, inputs):

        seq_fts = tf.layers.conv1d(inputs, self.out_sz, 1, use_bias=False)

        # simplest self-attention possible
        f_1_t = tf.layers.conv1d(seq_fts, 1, 1)
        f_2_t = tf.layers.conv1d(seq_fts, 1, 1)

        f_1 = tf.reshape(f_1_t, (self.nb_nodes, 1))
        f_2 = tf.reshape(f_2_t, (self.nb_nodes, 1))

        f_1 = self.bias_mat * f_1
        f_2 = self.bias_mat * tf.transpose(f_2, [1, 0])

        logits = tf.sparse_add(f_1, f_2)
        lrelu = tf.SparseTensor(indices=logits.indices,
                                values=tf.nn.leaky_relu(logits.values),
                                dense_shape=logits.dense_shape)
        coefs = tf.sparse_softmax(lrelu)

        # As tf.sparse_tensor_dense_matmul expects its arguments to have rank-2,
        # here we make an assumption that our input is of batch size 1, and reshape appropriately.
        # The method will fail in all other cases!
        coefs = tf.sparse_reshape(coefs, [self.nb_nodes, self.nb_nodes])
        seq_fts = tf.squeeze(seq_fts)
        vals = tf.sparse_tensor_dense_matmul(coefs, seq_fts)
        vals = tf.expand_dims(vals, axis=0)
        vals.set_shape([1, self.nb_nodes, self.out_sz])
        ret = self.act(tf.contrib.layers.bias_add(vals))

        return ret  # activation
コード例 #25
0
ファイル: GAT.py プロジェクト: flyingdoog/ASR
    def __call__(self, u_inputs, v_inputs, u_size, v_size):

        x = v_inputs
        adj_mat = self.adj_mat

        # simplest self-attention possible
        f_1 = tf.layers.conv1d(u_inputs, 1, 1)
        f_2 = tf.layers.conv1d(v_inputs, 1, 1)

        f_1 = tf.reshape(f_1, (u_size, 1))
        f_2 = tf.reshape(f_2, (v_size, 1))

        seq_fts = tf.layers.conv1d(x, self.output_dim, 1, use_bias=False)

        f_1 = adj_mat * f_1
        f_2 = adj_mat * tf.transpose(f_2, [1, 0])

        logits = tf.sparse_add(f_1, f_2)
        lrelu = tf.SparseTensor(indices=logits.indices,
                                values=tf.nn.leaky_relu(logits.values),
                                dense_shape=logits.dense_shape)
        coefs = tf.sparse_softmax(lrelu)

        coefs = tf.sparse_reshape(coefs, [u_size, v_size])
        seq_fts = tf.squeeze(seq_fts)
        vals = tf.sparse_tensor_dense_matmul(coefs, seq_fts)
        print('--------vals.shape------', vals.shape)
        # vals = tf.expand_dims(vals, axis=0)
        # vals.set_shape([1, nb_nodes, out_sz])
        ret = tf.contrib.layers.bias_add(vals)
        return self.act(ret)  # activation
コード例 #26
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  def testFeedDenseReshapeSemantics(self):
    with self.test_session(use_gpu=False) as sess:
      # Compute a random rank-5 initial shape and new shape, randomly sparsify
      # it, and check that the output of SparseReshape has the same semantics
      # as a dense reshape.
      factors = np.array([2] * 4 + [3] * 4 + [5] * 4)  # 810k total elements
      orig_rank = np.random.randint(2, 7)
      orig_map = np.random.randint(orig_rank, size=factors.shape)
      orig_shape = [np.prod(factors[orig_map == d]) for d in range(orig_rank)]
      new_rank = np.random.randint(2, 7)
      new_map = np.random.randint(new_rank, size=factors.shape)
      new_shape = [np.prod(factors[new_map == d]) for d in range(new_rank)]

      orig_dense = np.random.uniform(size=orig_shape)
      orig_indices = np.transpose(np.nonzero(orig_dense < 0.5))
      orig_values = orig_dense[orig_dense < 0.5]

      new_dense = np.reshape(orig_dense, new_shape)
      new_indices = np.transpose(np.nonzero(new_dense < 0.5))
      new_values = new_dense[new_dense < 0.5]

      sp_input = self._SparseTensorPlaceholder()
      input_val = tf.SparseTensorValue(orig_indices, orig_values, orig_shape)
      sp_output = tf.sparse_reshape(sp_input, new_shape)

      output_val = sess.run(sp_output, {sp_input: input_val})
      self.assertAllEqual(output_val.indices, new_indices)
      self.assertAllEqual(output_val.values, new_values)
      self.assertAllEqual(output_val.shape, new_shape)
コード例 #27
0
def read_and_decode(filename_queue):
    """
    decode tfrecords
    :param filename_queue: the filename
    :return: one_feature, label, rows(image number of one scene spot, that is, rows of the data of a .npy file)
    """
    reader = tf.TFRecordReader()
    _, serialized_example = reader.read(filename_queue)
    features = tf.parse_single_example(serialized_example,
                                       features={
                                           'rows':
                                           tf.FixedLenFeature([], tf.int64),
                                           'label':
                                           tf.FixedLenFeature([], tf.int64),
                                           'one_feature':
                                           tf.VarLenFeature(tf.float32)
                                       })

    one_feature = features['one_feature']
    # The code below does not work, you just cannot cast a SparseTensor
    # one_feature = tf.cast(features['one_feature'], tf.float32)
    """
    for CNN feature: n*2048
    """
    # one_feature = tf.sparse_reshape(one_feature, [-1, 2048])
    """
    for gist feature: n*512
    """
    one_feature = tf.sparse_reshape(one_feature, [-1, FLAGS.feature_col])
    label = tf.cast(features['label'], tf.int32)
    rows = tf.cast(features['rows'], tf.int32)
    return one_feature, label, rows
コード例 #28
0
def _sparse_or_dense_matmul_onehot(sparse_or_dense_matrix, col_index, size):
    """Returns a (dense) column of a Tensor or SparseTensor.

  Args:
    sparse_or_dense_matrix: matrix-shaped, `float` `Tensor` or `SparseTensor`.
    col_index: scalar, `int` `Tensor` representing the index of the desired
      column.
    size: scalar, `int` `Tensor` representing the number of rows in
      `sparse_or_dense_matrix`.  Used only in the sparse case, so that the
      caller can give side information about the shape of
      `sparse_or_dense_matrix`.

  Returns:
    column: vector-shaped, `float` `Tensor` with the same dtype as
      `sparse_or_dense_matrix`, representing the `col_index`th column of
      `sparse_or_dense_matrix`.
  """
    if isinstance(sparse_or_dense_matrix,
                  (tf.SparseTensor, tf.SparseTensorValue)):
        # TODO(b/111924846): Implement better (ideally in a way that allows us to
        # eliminate the `size` arg, if possible).
        return tf.sparse_tensor_to_dense(
            tf.sparse_reshape(
                tf.sparse_slice(sparse_or_dense_matrix,
                                tf.cast([0, col_index], tf.int64),
                                tf.cast([size, 1], tf.int64)), [size]))
    else:
        return tf.gather(sparse_or_dense_matrix, col_index, axis=-1)
コード例 #29
0
def sp_attn_head(seq,
                 out_sz,
                 adj_mat,
                 activation,
                 nb_nodes,
                 in_drop=0.0,
                 coef_drop=0.0,
                 residual=False):
    with tf.name_scope('sp_attn'):
        if in_drop != 0.0:
            seq = tf.nn.dropout(seq, 1.0 - in_drop)

        seq_fts = tf.layers.conv1d(seq, out_sz, 1, use_bias=False)

        # simplest self-attention possible
        f_1 = tf.layers.conv1d(seq_fts, 1, 1)
        f_2 = tf.layers.conv1d(seq_fts, 1, 1)

        f_1 = tf.reshape(f_1, (nb_nodes, 1))
        f_2 = tf.reshape(f_2, (nb_nodes, 1))

        f_1 = adj_mat * f_1
        f_2 = adj_mat * tf.transpose(f_2, [1, 0])

        logits = tf.sparse_add(f_1, f_2)
        lrelu = tf.SparseTensor(indices=logits.indices,
                                values=tf.nn.leaky_relu(logits.values),
                                dense_shape=logits.dense_shape)
        coefs = tf.sparse_softmax(lrelu)

        if coef_drop != 0.0:
            coefs = tf.SparseTensor(indices=coefs.indices,
                                    values=tf.nn.dropout(
                                        coefs.values, 1.0 - coef_drop),
                                    dense_shape=coefs.dense_shape)
        if in_drop != 0.0:
            seq_fts = tf.nn.dropout(seq_fts, 1.0 - in_drop)

        # As tf.sparse_tensor_dense_matmul expects its arguments to have rank-2,
        # here we make an assumption that our input is of batch size 1, and reshape appropriately.
        # The method will fail in all other cases!
        coefs = tf.sparse_reshape(coefs, [nb_nodes, nb_nodes])
        seq_fts = tf.squeeze(seq_fts)
        vals = tf.sparse_tensor_dense_matmul(coefs, seq_fts)
        vals = tf.expand_dims(vals, axis=0)
        vals.set_shape([1, nb_nodes, out_sz])
        ret = tf.contrib.layers.bias_add(vals)

        # residual connection
        if residual:
            if seq.shape[-1] != ret.shape[-1]:
                ret = ret + conv1d(seq, ret.shape[-1], 1)  # activation
            else:
                seq_fts = ret + seq

        if activation == None:  ## for the final layer
            return ret
        else:
            return activation(ret)  # activation
コード例 #30
0
def xletter_feature_extractor(text,model_prefix,input_mode, op_dict=None,xletter_cnt=None,win_size=None,dim_xletter_emb=None):
    with tf.variable_scope("xletter_layer", reuse=tf.AUTO_REUSE):
        if input_mode=='mstf':
            xletter_emb = tf.get_variable(name='xletter_emb_' + model_prefix, shape = [xletter_cnt * win_size, dim_xletter_emb])
            indices, ids, values, offsets = mstf.dssm_xletter(input=text, win_size=win_size, dict_handle=op_dict)
            offsets_to_dense = tf.segment_sum(tf.ones_like(offsets), offsets)
            batch_id = tf.cumsum(offsets_to_dense[:-1])
            index_tensor = tf.concat([tf.expand_dims(batch_id,axis=-1), tf.expand_dims(indices,axis=-1)],axis=-1)
            value_tensor = ids
            dense_shape = tf.concat([tf.shape(offsets),tf.expand_dims(tf.reduce_max(indices) + 1,axis=-1)],axis=0)
            text_tensor = tf.SparseTensor(indices=tf.cast(index_tensor,tf.int64), values = value_tensor, dense_shape=tf.cast(dense_shape,tf.int64))
            #conv
            text_tensor = tf.sparse_reshape(text_tensor,[-1])
            text_tensor,text_mask = tf.sparse_fill_empty_rows(text_tensor,0)
            text_vecs = tf.nn.embedding_lookup_sparse(xletter_emb,text_tensor,None,combiner='sum')
            text_vecs = tf.where(~text_mask, text_vecs, tf.zeros_like(text_vecs))
            text_vecs = tf.reshape(text_vecs,[-1,tf.reduce_max(indices) + 1,dim_xletter_emb])
            step_mask = ~tf.equal(tf.reduce_sum(text_vecs,axis=2),0)
            sequence_length = tf.cast(tf.count_nonzero(step_mask,axis=1),tf.int32)
        elif input_mode=='pyfunc':
            query_split = tf.string_split(text,';')
            term_split = tf.string_split(query_split.values,',')
            xletter_tensor_indices = tf.transpose(tf.stack([tf.gather(query_split.indices[:,0],term_split.indices[:,0]),tf.gather(query_split.indices[:,1],term_split.indices[:,0])]))
            xletter_tensor = tf.SparseTensor(indices = xletter_tensor_indices, values = tf.string_to_number(term_split.values,out_type=tf.int32), dense_shape = query_split.dense_shape)
            xletter_emb = tf.get_variable(name='xletter_emb_' + model_prefix, shape = [xletter_cnt * win_size, dim_xletter_emb])
            xletter_tensor_reshape = tf.sparse_reshape(xletter_tensor,[-1])
            xletter_tensor,text_mask = tf.sparse_fill_empty_rows(xletter_tensor_reshape,0)
            xletter_vecs = tf.nn.embedding_lookup_sparse(xletter_emb, xletter_tensor, None, combiner='sum')
            xletter_vecs = tf.where(~text_mask, xletter_vecs, tf.zeros_like(xletter_vecs))
            text_vecs = tf.reshape(xletter_vecs, shape=tf.stack([-1,tf.reduce_max(query_split.indices[:,1])+1,dim_xletter_emb]))
            step_mask = ~tf.equal(tf.reduce_sum(text_vecs,axis=2),0)
            sequence_length = tf.cast(tf.count_nonzero(step_mask,axis=1),tf.int32)
        elif input_mode=='pyfunc_batch':
            indices, values, dense_shape = tf.py_func(op_dict.batch_xletter_extractor,[text],[tf.int64,tf.int32,tf.int64])
            xletter_tensor = tf.SparseTensor(indices = indices, values = values, dense_shape = dense_shape)
            xletter_emb = tf.get_variable(name='xletter_emb_' + model_prefix, shape = [xletter_cnt * win_size, dim_xletter_emb])
            xletter_tensor_reshape = tf.sparse_reshape(xletter_tensor,[-1])
            xletter_tensor,text_mask = tf.sparse_fill_empty_rows(xletter_tensor_reshape,0)
            xletter_vecs = tf.nn.embedding_lookup_sparse(xletter_emb, xletter_tensor, None, combiner='sum')
            xletter_vecs = tf.where(~text_mask, xletter_vecs, tf.zeros_like(xletter_vecs))
            text_vecs = tf.reshape(xletter_vecs, shape=tf.stack([-1,dense_shape[1],dim_xletter_emb]))
            step_mask = ~tf.equal(tf.reduce_sum(text_vecs,axis=2),0)
            sequence_length = tf.cast(tf.count_nonzero(step_mask,axis=1),tf.int32)
        else:
            NotImplementedError
    return text_vecs, step_mask, sequence_length
コード例 #31
0
 def testFeedMismatchedSizes(self):
     with self.test_session(use_gpu=False) as sess:
         sp_input = self._SparseTensorPlaceholder()
         input_val = self._SparseTensorValue_5x6()
         sp_output = tf.sparse_reshape(sp_input, [4, 7])
         with self.assertRaisesOpError(
                 "Input to reshape is a tensor with 30 dense values"):
             sess.run(sp_output, {sp_input: input_val})
コード例 #32
0
ファイル: graph.py プロジェクト: DanielMorales9/tfdiv
 def dot_product(params, rankings, x):
     two_dims = LatentFactorPortfolioGraph.two_dim_shape(x, rankings)
     x_two_dim = tf.sparse_reshape(x, shape=two_dims)
     dot_prod = tf.sparse_tensor_dense_matmul(x_two_dim, params)
     three_dims = LatentFactorPortfolioGraph.three_dim_shape(
         params, rankings)
     dot_prod_three_dim = tf.reshape(dot_prod, shape=three_dims)
     return dot_prod_three_dim
コード例 #33
0
    def _attn_r_n_m_h(self):
        h, r, n = self.heads, self.relations, self._nodes

        attn_h_n_rm = self._attn_h_n_rm
        attn_h_n_r_m = tf.sparse_reshape(attn_h_n_rm, [h, n, r, n])
        attn_r_n_m_h = tf.sparse_transpose(attn_h_n_r_m, [2, 1, 3, 0])

        return attn_r_n_m_h
コード例 #34
0
 def preprocessing_fn(inputs):
     return {
         'dense_out':
         mappers.scale_to_0_1(inputs['dense_1']),
         'sparse_out':
         api.map(lambda x: tf.sparse_reshape(x, (1, 10)),
                 inputs['sparse'])
     }
コード例 #35
0
 def testFeedMismatchedSizes(self):
   with self.test_session(use_gpu=False) as sess:
     sp_input = self._SparseTensorPlaceholder()
     input_val = self._SparseTensorValue_5x6()
     sp_output = tf.sparse_reshape(sp_input, [4, 7])
     with self.assertRaisesOpError(
         "Input to reshape is a tensor with 30 dense values"):
       sess.run(sp_output, {sp_input: input_val})
コード例 #36
0
  def testSameShape(self):
    with self.test_session(use_gpu=False) as sess:
      input_val = self._SparseTensorValue_5x6()
      sp_output = tf.sparse_reshape(input_val, [5, 6])

      output_val = sess.run(sp_output)
      self.assertAllEqual(output_val.indices, input_val.indices)
      self.assertAllEqual(output_val.values, input_val.values)
      self.assertAllEqual(output_val.shape, input_val.shape)
コード例 #37
0
  def testFeedSameShapeWithInferredDim(self):
    with self.test_session(use_gpu=False) as sess:
      sp_input = self._SparseTensorPlaceholder()
      input_val = self._SparseTensorValue_5x6()
      sp_output = tf.sparse_reshape(sp_input, [-1, 6])

      output_val = sess.run(sp_output, {sp_input: input_val})
      self.assertAllEqual(output_val.indices, input_val.indices)
      self.assertAllEqual(output_val.values, input_val.values)
      self.assertAllEqual(output_val.shape, input_val.shape)
コード例 #38
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ファイル: preprocessors.py プロジェクト: dpressel/baseline
 def create_word_vectors_from_post(self, raw_post, mxlen):
     # vocab has only lowercase words
     word2index = self.index
     if self.do_lowercase:
         raw_post = self.lowercase(raw_post)
     word_tokens = tf.string_split(tf.reshape(raw_post, [-1]))
     word_indices = word2index.lookup(word_tokens)
     # Reshape them out to the proper length
     reshaped_words = tf.sparse_reshape(word_indices, shape=[-1])
     return self.reshape_indices(reshaped_words, [mxlen])
コード例 #39
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ファイル: exporter_elmo.py プロジェクト: dpressel/baseline
    def _create_word_vectors_from_post_mixed_case(self, nraw_post, mxlen):
        # vocab has only lowercase words
        word_tokens = tf.string_split(tf.reshape(nraw_post, [-1]))

        word_indices = self.word2index.lookup(word_tokens)

        # Reshape them out to the proper length
        reshaped_words = tf.sparse_reshape(word_indices, shape=[-1])
        x = self._reshape_indices(reshaped_words, [mxlen])

        return x
コード例 #40
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  def testUpRank(self):
    with self.test_session(use_gpu=False) as sess:
      input_val = self._SparseTensorValue_5x6()
      sp_output = tf.sparse_reshape(input_val, [2, 3, 5])

      output_val = sess.run(sp_output)
      self.assertAllEqual(output_val.indices, np.array([
          [0, 0, 0], [0, 1, 1], [0, 1, 4], [0, 2, 0], [1, 1, 0], [1, 1, 1]
      ]))
      self.assertAllEqual(output_val.values, input_val.values)
      self.assertAllEqual(output_val.shape, [2, 3, 5])
コード例 #41
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  def testFeedUpRankWithInferredDim(self):
    with self.test_session(use_gpu=False) as sess:
      sp_input = self._SparseTensorPlaceholder()
      input_val = self._SparseTensorValue_5x6()
      sp_output = tf.sparse_reshape(sp_input, [2, -1, 5])

      output_val = sess.run(sp_output, {sp_input: input_val})
      self.assertAllEqual(output_val.indices, np.array([
          [0, 0, 0], [0, 1, 1], [0, 1, 4], [0, 2, 0], [1, 1, 0], [1, 1, 1]
      ]))
      self.assertAllEqual(output_val.values, input_val.values)
      self.assertAllEqual(output_val.dense_shape, [2, 3, 5])
コード例 #42
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  def testFeedNewShapeSameRankWithInferredDim(self):
    with self.test_session(use_gpu=False) as sess:
      sp_input = self._SparseTensorPlaceholder()
      input_val = self._SparseTensorValue_5x6()
      sp_output = tf.sparse_reshape(sp_input, [3, -1])

      output_val = sess.run(sp_output, {sp_input: input_val})
      self.assertAllEqual(output_val.indices, np.array([
          [0, 0], [0, 6], [0, 9], [1, 0], [2, 0], [2, 1]
      ]))
      self.assertAllEqual(output_val.values, input_val.values)
      self.assertAllEqual(output_val.shape, [3, 10])
コード例 #43
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  def testFeedDownRankWithInferredDim(self):
    with self.test_session(use_gpu=False) as sess:
      sp_input = self._SparseTensorPlaceholder()
      input_val = self._SparseTensorValue_2x3x4()
      sp_output = tf.sparse_reshape(sp_input, [6, -1])

      output_val = sess.run(sp_output, {sp_input: input_val})
      self.assertAllEqual(output_val.indices, np.array([
          [0, 1], [1, 0], [1, 2], [3, 3], [4, 1], [4, 3], [5, 2]
      ]))
      self.assertAllEqual(output_val.values, input_val.values)
      self.assertAllEqual(output_val.shape, [6, 4])
コード例 #44
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  def testFeedPartialShapes(self):
    with self.test_session(use_gpu=False):
      # Incorporate new rank into shape information if known
      sp_input = self._SparseTensorPlaceholder()
      sp_output = tf.sparse_reshape(sp_input, [2, 3, 5])
      self.assertListEqual(sp_output.indices.get_shape().as_list(), [None, 3])
      self.assertListEqual(sp_output.dense_shape.get_shape().as_list(), [3])

      # Incorporate known shape information about input indices in output
      # indices
      sp_input = self._SparseTensorPlaceholder()
      sp_input.indices.set_shape([5, None])
      sp_output = tf.sparse_reshape(sp_input, [2, 3, 5])
      self.assertListEqual(sp_output.indices.get_shape().as_list(), [5, 3])
      self.assertListEqual(sp_output.dense_shape.get_shape().as_list(), [3])

      # Even if new_shape has no shape information, we know the ranks of
      # output indices and shape
      sp_input = self._SparseTensorPlaceholder()
      sp_input.indices.set_shape([5, None])
      new_shape = tf.placeholder(tf.int64)
      sp_output = tf.sparse_reshape(sp_input, new_shape)
      self.assertListEqual(sp_output.indices.get_shape().as_list(), [5, None])
      self.assertListEqual(sp_output.dense_shape.get_shape().as_list(), [None])
コード例 #45
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def sparse_message_pass(node_states,
                        adjacency_matrices,
                        num_edge_types,
                        hidden_size,
                        use_bias=True,
                        average_aggregation=False,
                        name="sparse_ggnn"):
  """One message-passing step for a GNN with a sparse adjacency matrix.

  Implements equation 2 (the message passing step) in
  [Li et al. 2015](https://arxiv.org/abs/1511.05493).

  N = The number of nodes in each batch.
  H = The size of the hidden states.
  T = The number of edge types.

  Args:
    node_states: Initial states of each node in the graph. Shape is [N, H].
    adjacency_matrices: Adjacency matrix of directed edges for each edge
      type. Shape is [N, N, T] (sparse tensor).
    num_edge_types: The number of edge types. T.
    hidden_size: The size of the hidden state. H.
    use_bias: Whether to use bias in the hidden layer.
    average_aggregation: How to aggregate the incoming node messages. If
      average_aggregation is true, the messages are averaged. If it is false,
      they are summed.
    name: (optional) The scope within which tf variables should be created.

  Returns:
    The result of one step of Gated Graph Neural Network (GGNN) message passing.
    Shape: [N, H]
  """
  n = tf.shape(node_states)[0]
  t = num_edge_types
  incoming_edges_per_type = tf.sparse_reduce_sum(adjacency_matrices, axis=1)

  # Convert the adjacency matrix into shape [T, N, N] - one [N, N] adjacency
  # matrix for each edge type. Since sparse tensor multiplication only supports
  # two-dimensional tensors, we actually convert the adjacency matrix into a
  # [T * N, N] tensor.
  adjacency_matrices = tf.sparse_transpose(adjacency_matrices, [2, 0, 1])
  adjacency_matrices = tf.sparse_reshape(adjacency_matrices, [t * n, n])

  # Multiply the adjacency matrix by the node states, producing a [T * N, H]
  # tensor. For each (edge type, node) pair, this tensor stores the sum of
  # the hidden states of the node's neighbors over incoming edges of that type.
  messages = tf.sparse_tensor_dense_matmul(adjacency_matrices, node_states)

  # Rearrange this tensor to have shape [N, T * H]. The incoming states of each
  # nodes neighbors are summed by edge type and then concatenated together into
  # a single T * H vector.
  messages = tf.reshape(messages, [t, n, hidden_size])
  messages = tf.transpose(messages, [1, 0, 2])
  messages = tf.reshape(messages, [n, t * hidden_size])

  # Run each of those T * H vectors through a linear layer that produces
  # a vector of size H. This process is equivalent to running each H-sized
  # vector through a separate linear layer for each edge type and then adding
  # the results together.
  #
  # Note that, earlier on, we added together all of the states of neighbors
  # that were connected by edges of the same edge type. Since addition and
  # multiplying by a linear layer are commutative, this process was equivalent
  # to running each incoming edge through a linear layer separately and then
  # adding everything at the end.
  with tf.variable_scope(name, default_name="sparse_ggnn"):
    final_node_states = common_layers.dense(
        messages, hidden_size, use_bias=False)

    # Multiply the bias by for each edge type by the number of incoming nodes
    # of that edge type.
    if use_bias:
      bias = tf.get_variable("bias", initializer=tf.zeros([t, hidden_size]))
      final_node_states += tf.matmul(incoming_edges_per_type, bias)

    if average_aggregation:
      incoming_edges = tf.reduce_sum(incoming_edges_per_type, -1, keepdims=True)
      incoming_edges = tf.tile(incoming_edges, [1, hidden_size])
      final_node_states /= incoming_edges + 1e-7

  return final_node_states