srch

In machine learning, the hinge loss is a loss function used for training classifiers. The hinge loss is used for "maximum-margin" classification, most notably ... Several different variations of multiclass hinge loss have been proposed.

nn_multi_margin_loss( p = 1, margin = 1, weight = NULL, reduction = "mean") Arguments Details For each mini-batch sample, the loss in terms of the 1D input x and scalar output y is: loss(x, y) = ∑i max (0, margin − x[y] + x[i]))p x.size(0) where x ∈ {0, ⋯, x.size(0) − 1} and i ≠ y.

In Section 4 we show that the widely used losses in binary margin-based classification are capable of producing the multi-class margin-based classifiers.

MultiMarginLoss. class torch.nn.MultiMarginLoss(p=1, margin=1.0, weight=None, size_average=None, reduce=None, reduction='mean') [source] Creates a criterion that optimizes a multi-class classification hinge loss (margin-based loss) between input. x.

Jun 26, 2020 · Creates a criterion that optimizes a multi-class classification hinge loss (margin-based loss) between input x (a 2D mini-batch Tensor) and output y. Based on the shape information it should also work for your current output and target shapes. Let me know, if it would work for you.

MultiMarginLoss() Examples. The following are 8 code examples for showing how to use torch.nn.MultiMarginLoss(). These examples are extracted from ...

I want to implement a classifier which can have 1 of 10 possible classes. I am trying to use the MultiClass Softmax Loss Function to do this.

Creates a criterion that optimizes a multi-class multi-classification hinge loss (margin-based loss) between input. x. x x (a 2D mini-batch Tensor ) and output. y. y y (which is a 2D Tensor of target class indices). For each sample in the mini-batch:

MultiMarginLoss class torch.nn.MultiMarginLoss(p=1, margin=1.0, weight=None, size_average=None, reduce=None, reduction='mean') [source] Creates a criterion that optimizes a multi-class classification hinge loss (margin-based loss) between input x x (a 2D mini-batch Tensor) and output y y (which is a 1D tensor of target class indices,

class torch.nn.MultiLabelMarginLoss(size_average=None, reduce=None, reduction='mean') [source] Creates a criterion that optimizes a multi-class multi-classification hinge loss (margin-based loss) between input x x (a 2D mini-batch Tensor ) and output y y (which is a 2D Tensor of target class indices). For each sample in the mini-batch:

20.03.2020 · MultiLabelSoftMarginLoss针对multi-label one-versus-all（多分类，且每个样本只能属于一个类）的情形。loss的计算公式如下：其中，x是模型预测的标签，x的shape是（N,C），N表示batch size，C是分类数；y是真实标签，shape也是（N,C），。的值域是(0,）；的值域是(1,）；的值域是(0,1)；的值域是...

The Margin Vector, Admissible Loss and Multi-class Margin-based Classifiers Hui Zou ∗ University of Minnesota Ji Zhu University of Michigan Trevor Hastie Stanford University Abstract We propose a new framework to construct the margin-based classifiers, in which the binary and multicategory classification problems are solved by the same princi-

We use multiple one-vs-all classifiers with a margin loss (see Multiclass Linear SVM) to classify data. Each classifier is implemented on an ...

25.11.2019 · The loss you're looking at is designed for situations where each example can belong to multiple classes (say a person can be classified as both female and old). I think it's this "multi" that confuses you - it stands for the multiple possible classifications per example , not just multiple potential labels in the whole "universe".

Bug According to the documentation, the input to torch.nn.MultiMarginLoss() should be: x (a 2D mini-batch Tensor) y (a 1D tensor of target ...

Creates a criterion that optimizes a multi-class multi-classification hinge loss (margin-based loss) between input x (a 2D mini-batch Tensor ) and output y ...

solutions of regularized loss functions to converge to margin maximizing separa-tors, as the regularization vanishes. This condition covers the hinge loss of SVM, the exponential loss of AdaBoost and logistic regression loss. We also generalize it to multi-class classification problems, and present margin maximizing multi-

Jun 20, 2021 · MultiMarginLoss 多分类合页损失函数（hinge loss），对于一个样本不是考虑样本输出与真实类别之间的误差，而是考虑对应真实类别与其他类别之间的误差 对于包含 N 个样本的batch数据 D(x,y) ， x 为神经网络的输出， y 是真实的类别标签，假设类别数为 C, 0 ≤ yn ≤ C −1 。 第 n 个样本的损失值 ln 计算如下: ln = C 1 i=0&i =yn ∑C−1 max(0,margin−xn [yn ]+ xn [i])p 为了处理多个类别之间的样本不平衡问题，对于每一类可传入相应的权值 w 。 ln = C 1 i=0&i =yn ∑C−1 max(0,w[yn ](margin−xn [yn ]+ xn [i]))p 若

Multi-class margin loss ( nn.MultiMarginLoss ). For multiclass classification problems, a multi-class hinge loss can be used represented by nn.

The multi-margin loss is designed to constrain the pro-posed framework. MML contains two components: TML and HAML, which are effective to minimize cross-domain intra-class distance and further maximize cross-domain inter-class distance. We propose an alternative optimization to fine-tune the heterogeneous representation networks and decorrela-

MultiMarginLoss (p=1, margin=1.0, weight=None, size_average=None, ... a multi-class classification hinge loss (margin-based loss) between input x x x (a 2D ...