April 2020
Intermediate to advanced
816 pages
18h 32m
Chinese
Content preview from 精通機器學習
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
TFRecord 格式
|
417
你也可以用
tf.io.parse_example()
來逐批解析樣本
，
而不是用
tf.io.parse_single_
example()
逐一解析它們
：
dataset = tf.data.TFRecordDataset(["my_contacts.tfrecord"]).batch(10)
for
serialized_examples
in
dataset:
parsed_examples = tf.io.parse_example(serialized_examples,
feature_description)
如你所見
，
Example
protobuf
應該足以應付多數的使用案例了
。
但是
，
當你處理串列的串
列時
，
它們可能不太好用
。
例如
，
假設你想要分類文字文件
，
那些文件可能被表示成句子
串列
，
其中每個句子都被表示成單字串列
，
文件可能也有註釋串列
，
各個註釋都用單字串
列來表示
。
此外可能還有一些背景資料
，
例如文件的作者
、
標題和出版日期
。TensorFlow
的
SequenceExample
protobuf
正是為這種使用案例設計的
。
使用
SequenceExample Protobuf
來處理串列的串列
這是
SequenceExample
protobuf
的定義
：
message FeatureList { repeated Feature feature = 1; };
message FeatureLists { map<string, FeatureList> feature_list ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.