java - 是否可以从数据集中自动生成描述符以供 ANN 使用？

Question

我想将数据集自动分类为几个类。是否可以在不编码任何描述符的情况下训练神经网络？

我正在对一组固定大小的图片进行分类。不过，我真的不想为它们编写一组描述符。有没有一种方法可以让我毫不费力地对我的集合进行分类？

我有一个大数据集，只有 7-8 个类可以分类。

如果我能在此过程中找到一些示例代码，我会非常高兴:)

Answer 1

There is a very broad class of neural networks. For what you're doing, you will want to look for one based on unsupervised learning. Typically, these are based on Hebb's rule.

For your case, you might find competitive learning to be suitable. Essentially, you set an output neuron for each class (so the 7-8 you're expecting), and strengthen the weights to the most active for a given input pattern. This results in clustering; input patterns that are similar activate the same output neuron, strengthening those connections and causing the neurons to specialize for the different classes.