September 2022
Intermediate to advanced
549 pages
11h 27m
Chinese
Content preview from 基于AWS的数据科学实践
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240
｜
第
7
章
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7.3
开发一个
SageMaker
模型
正如
Amazon.com
通过
Amazom.com
市场为顾客提供许多选项，
Amazon SageMaker
为构建、训练、调优和部署模型也提供了许多选项。我们会在第
8
章模型调优和第
9
章部署模型时对此进行深入探讨。取决于所需的定制化程度，一共有三种主要的
选项，如图
7-5
所示。
内建算法 自带容器
自带脚本
代码更少 定制化程度更高
图 7-5：SageMaker 有三种选项进行模型构建、训练、优化和部署
7.3.1
内置算法
SageMaker
为许多不同领域提供可以开箱即用的内置算法，如
NLP
，计算机视觉，
异常检测和推荐。只需要将这些高度优化的算法指向我们的数据，我们将得到一个
完全训练的、便于部署的机器学习模型以集成到应用中。下表展示的算法被设计用
于很大的数据集且被成千上万的用户所使用，适合不想管理许多基础设施，而想要
重用这些身经百战的算法的我们。此外，它们也提供了一些便利，诸如大规模分布
式训练以降低训练时间，以及对混合精度浮点数（
mixed-precision floating-point
）
的支持以改善模型预测时延。
训练第一个模型
｜
241
分类 计算机视觉 文本处理
• ...
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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.