吴恩达关于正则化的形象解释
来源:互联网 发布:算法第四版目录 编辑:程序博客网 时间:2024/05/23 01:27
if think learning to drive a car ,a car has three main controls,which are steering, the steering wheel decides how much you go left or right,acceleration and braking. so these three controls,or really one control for steering, and another two controls your speed .it makes relatively interpretable, what your different actions throughdifferent controls will do to you car, but now imagine someone were to build a car so that there was a joystick,and the joystick contols like this:
in theory,by tuning these two knobs,you could get your car at the angle and at the speed you want .so the concept of orthogonalization refers to that, if you think one dimension of what you want to do as controlling steering angle,and another dimension as controlling you speed
then you want one knob to just affect steering angle as much as possible,and another knob,in the case of car , is really acceleration and braking that controls your speed.
But if you had a control that mixes the two together,like a control like this one that affects your steering angle and your speed,something that changing at the same time
then it become much harder to set the car to the speed and the angle you want,and by having orthgonal,orthgonal means at 90 degrees to each other, by having orthgonal controls that are ideally aligned with the things you actually want to control,it makes much easier to tune the knobs you have to tune,to tune your steering wheel angle and your accelerator and braking. to get the car to do you want
so how does this relate to machine learning,for a supervised learning system to do well,you usually need to tune your knobs of your system to make sure that four things hold true
in a word,if it not doing well in training set、dev set、test set、or performs well in real word ,you need one knob or one specific sets of knobs that you can use to make sure you can tune your algorithm to make it fit well,it means to try to make it satisfy the criteria
- 吴恩达关于正则化的形象解释
- 吴恩达关于dev / test sets的形象解释
- 关于正则表达式中贪婪量词与懒惰量词的形象解释
- 一段关于对象引用的形象解释
- 关于监听套接字的形象解释
- IOC的形象解释
- 卷积的形象解释
- 计算机网络的形象解释
- 关于进程和线程的一个形象的解释
- 关于OSI七层模型的形象解释
- 关于编译器和解释器区别的形象故事
- 很形象的网关解释
- 各种门的形象解释
- 系统调用的形象解释
- PID算法的形象解释
- oracle中关于数据库、schame、user、table、DBA的形象解释
- 关于网关、DNS、DHCP、路由表、ARP表等的形象解释说明
- 基础知识:网络专业术语的通俗形象解释
- 使用idea创建springboot
- Mprobe: 对讲机系统实时运行探测器。
- 简述Visual Tracking with Fully Convolutional Networks
- equals
- zedboard opencv不能读取jpg图像
- 吴恩达关于正则化的形象解释
- BigDecimal
- 大数据曝光了!80后年薪多少,才能摆脱中年危机?
- DOM, DOCUMENT, BOM, WINDOW 有什么区别?
- framebuffer操作初识
- Linux_登录后启动指定程序,开机自启动
- mysql支持正则表达式
- electron 完整项目构建过程
- ajax+h5+url解析