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移动端AI与ML应用开发:基于iOS和Android
book

移动端AI与ML应用开发:基于iOS和Android

by Laurence Moroney
January 2023
Intermediate to advanced
288 pages
6h 6m
Chinese
China Machine Press
Content preview from 移动端AI与ML应用开发:基于iOS和Android
人工智能和机器学习简介
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17
测它。在这种情况下,预测(通常称为推理)反映了这样一个事实:模型将尝试根据它
所知道的事实来确定“值”是什么,但可能并不总是正确的。
1.2.3
机器学习与传统编程的比较
回顾图 1-3 的传统编程,现在让我们更新它,给定你刚刚看到的内容,以显示机器学习
和传统编程之间的区别。早些时候,我们将传统编程描述如下:找出给定场景的规则,
用代码表达它们,让代码对数据进行操作,然后得出答案。机器学习非常相似,只是其
中一些过程被颠倒了。具体情况如图 1-7 所示。
规则
数据
答案
数据
机器学习
传统编程
答案
规则
1-7
:从传统编程到机器学习
正如你所看到的,这里的主要区别在于,使用机器学习,你不用搞清楚规则!相反,你
提供答案和数据,机器会为你找出规则。在前面的例子中,我们为某些给定的
x
值(也
就是数据)提供了正确的
y
值(也就是答案),然后计算机计算出使
x
y
相匹配的规则。
我们没有做任何几何、斜率计算、截距或类似的事情。机器计算出
x
y
相匹配的模式。
这是机器学习与传统编程之间的核心和重要区别,也是机器学习带来的所有兴奋的原
因,因为它开辟了全新的应用场景。这方面的一个例子是计算机视觉
正如我们之前
讨论的那样,试图编写规则来找出 T 恤和鞋子之间的区别是非常困难的。但是让计算机
计算出一个东西如何与另一个东西匹配则很有可能,从这里开始,更重要的场景
如解释 X 射线或其他医学扫描、检测大气污染等
成为可能。事实上,研究表明,在
许多情况下,使用这些类型的算法以及足够的数据,可以使计算机在特定任务的完成上 ...
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Publisher Resources

ISBN: 9787111713081