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集体智慧导言 | 广阔天地,大有作为 #3

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laiqun opened this issue Nov 4, 2017 · 1 comment
Open

集体智慧导言 | 广阔天地,大有作为 #3

laiqun opened this issue Nov 4, 2017 · 1 comment

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@laiqun
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laiqun commented Nov 4, 2017

https://laiqun.github.io/2017/11/04/introduction-to-collective-intelligence/

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laiqun commented Mar 15, 2018

为什么需要机器学习?

有些任务直接编码较为复杂,我们不能处理所有的细微之处和简单编码,因此,机器学习很有必要。相反,我们向机器学习算法提供大量数据,让算法不断探索数据并构建模型来解决问题。比如:在新的杂乱照明场景内,从新的角度识别三维物体;编写一个计算信用卡交易诈骗概率的程序。

机器学习方法如下:它没有为每个特定的任务编写相应的程序,而是收集大量事例,为给定输入指定正确输出。算法利用这些事例产生程序。该程序与手写程序不同,可能包含数百万的数据量,也适用于新事例以及训练过的数据。若数据改变,程序在新数据上训练且被更新。大量的计算比支付手写程序要便宜的多。

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