支持向量机分类

用于二类分类或多类分类的支持向量机

为了提高在中低维数据集上的准确度并增加核函数选择，可以使用分类学习器训练二类 SVM 模型，或包含 SVM 二类学习器的多类纠错输出编码 (ECOC) 模型。为了获得更大的灵活性，可以在命令行界面中使用 fitcsvm 训练二类 SVM 模型，或者使用 fitcecoc 训练由二类 SVM 学习器组成的多类 ECOC 模型。

为了减少在高维数据集上的计算时间，可以使用 fitclinear 高效地训练二类线性分类模型（例如线性 SVM 模型），或者使用 fitcecoc 训练由 SVM 模型组成的多类 ECOC 模型。

对于大数据的非线性分类，可以使用 fitckernel 训练二类高斯核分类模型。

App

分类学习器

使用有监督的机器学习训练模型以对数据进行分类

模块

ClassificationSVM Predict

Classify observations using support vector machine (SVM) classifier for one-class and binary classification

函数

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二类 SVM

`fitcsvm`	训练用于一类和二类分类的支持向量机 (SVM) 分类器
`fitSVMPosterior`	Fit posterior probabilities
`predict`	Classify observations using support vector machine (SVM) classifier
`templateSVM`	Support vector machine template

二类线性分类

`fitclinear`	Fit linear classification model to high-dimensional data
`predict`	Predict labels for linear classification models
`templateLinear`	Linear classification learner template

二类核分类

`fitckernel`	Fit Gaussian kernel classification model using random feature expansion
`predict`	Predict labels for Gaussian kernel classification model
`templateKernel`	Kernel model template

多类 ECOC

`fitcecoc`	Fit multiclass models for support vector machines or other classifiers
`predict`	Classify observations using multiclass error-correcting output codes (ECOC) model
`templateECOC`	Error-correcting output codes learner template

类

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二类 SVM

`ClassificationSVM`	Support vector machine (SVM) for one-class and binary classification
`CompactClassificationSVM`	Compact support vector machine (SVM) for one-class and binary classification
`ClassificationPartitionedModel`	Cross-validated classification model

二类线性分类

`ClassificationLinear`	Linear model for binary classification of high-dimensional data
`ClassificationPartitionedLinear`	Cross-validated linear model for binary classification of high-dimensional data

二类核分类

`ClassificationKernel`	Gaussian kernel classification model using random feature expansion
`ClassificationPartitionedKernel`	Cross-validated, binary kernel classification model

多类 ECOC

`ClassificationECOC`	Multiclass model for support vector machines (SVMs) and other classifiers
`CompactClassificationECOC`	Compact multiclass model for support vector machines (SVMs) and other classifiers
`ClassificationPartitionedECOC`	Cross-validated multiclass ECOC model for support vector machines (SVMs) and other classifiers
`ClassificationPartitionedLinearECOC`	Cross-validated linear error-correcting output codes model for multiclass classification of high-dimensional data
`ClassificationPartitionedKernelECOC`	Cross-validated kernel error-correcting output codes (ECOC) model for multiclass classification