Different types of SVM -- opencv
来源:互联网 发布:g92车锥螺纹编程实例 编辑:程序博客网 时间:2024/05/17 09:18
They are different formulations of SVM. At the heart of SVM is an mathematical optimization problem. This problem can be stated in different ways.
C-SVM uses C as the tradeoff parameter between the size of margin and the number of training points which are misclassified. C is just a number, the useful range depends on the dataset and it can range from very small (like 10-5) to very large (like 10^5), depending on your data.
nu-SVM uses nu instead of C. nu is roughly a percentage of training points which will end up as support vectors. The more support vectors, the wider your margin is, the more training points which will be misclassified. nu ranges from 0.1 to 0.8 - at 0.1 roughly 10% of training points will be support vectors, at 0.8, more like 80%. I say roughly because its just correlated that way - its not exact.
epsilon-SVR and nu-SVR use SVM for regression. Instead of doing binary classification by finding a maximum margin hyperplane, instead the concept is used to find a hypertube which best fits the data in order to use it to predict future models. They differ in the way they are parameterized (like nu-SVM and C-SVM differ).
One-Class SVM is novelty detection. Rather than binary classification, or predicting a value, instead you give the SVM a training set and it attempts to train a model to wrap around that set so that a future instance can be classified as part of the class or outside the class (novel or outlier).
- Different types of SVM -- opencv
- Different types of sales document
- 5 Examples of Different Types of CAPTCHAs
- The Different Types of SAP Tables
- Understanding different types of bit-rate encoding
- The Different Types of SAP Tables
- Different types of keystore in Java -- JKS
- Different types of keystore in Java -- PKCS12
- Different types of keystore in Java -- Overview
- random walk for different types of Drunks
- SICP Combine operands of different types
- Different Types of Switches in Networking
- [Linux]oclHashcat Examples of lots of different hash types
- What Are Different Types Of Internal Tables and Their Usage
- How to create different types of thread pool in Java
- Different types of thread-safe Sets in Java
- Different Types of People Skills - The utility weapon when communication
- Different ways of associating known types in wcf
- 重拾C语言-空指针
- Windows 常用软件备忘
- 每日vim系列0716
- POJ 1007-DNA Sorting
- 如何优雅的记录编程中遇到的问题
- Different types of SVM -- opencv
- 3278 & [kuangbin带你飞]专题一 简单搜索 C
- spring
- Scheduling Tasks定时任务
- POJ 1008--Maya Calendar
- 【面试题】C++综合面试题
- iOS中 new Date() 返回 NaN
- express入门(7)- mysql
- 软件开发流程简介