ofc_a3c.py 文件源码

def build_summary_ops():
    """Tensorflow magic episode summary operations.
    I have no idea what this does or how this works."""
    episode_reward = tf.Variable(0.)
    tf.scalar_summary("Episode Reward", episode_reward)
    r_summary_placeholder = tf.placeholder("float")
    update_ep_reward = episode_reward.assign(r_summary_placeholder)
    ep_avg_v = tf.Variable(0.)
    tf.scalar_summary("Episode Value", ep_avg_v)
    val_summary_placeholder = tf.placeholder("float")
    update_ep_val = ep_avg_v.assign(val_summary_placeholder)
    summary_op = tf.merge_all_summaries()
    return (r_summary_placeholder, update_ep_reward, val_summary_placeholder,
            update_ep_val, summary_op)