import tensorflow as tf

    placeholders = {
        'batch': tf.placeholder(tf.int32, name='batch'),
        'batch_neg': tf.placeholder(tf.int32, name='batch_neg'),
        'batch_node':tf.placeholder(tf.int32,name = 'batch_node'),
        'adj_min_batch': tf.placeholder(tf.float32,name='adj_min_batch'),
        'sim_min_batch': tf.placeholder(tf.float32,name='sim_min_batch'),
        'batch_edge_type_idx': tf.placeholder(tf.int32, shape=(), name='batch_edge_type_idx'),
        'batch_row_edge_type': tf.placeholder(tf.int32, shape=(), name='batch_row_edge_type'),
