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arXiv 2202.07005cs.LG
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线性和深度模型的连续广义有序回归

Continuously Generalized Ordinal Regression for Linear and Deep Models

Booz Allen Hamilton(博思艾伦汉密尔顿);Univ. of Maryland, Baltimore County(马里兰大学巴尔的摩县分校)

Fred Lu, Francis Ferraro, Edward Raff

摘要:

有序回归是一种分类任务,其中类具有顺序,并且预测类离真实类越远,预测误差就越大。用于建模有序数据的标准方法涉及拟合优化某个损失函数的平行分离超平面。这种假设通过归纳偏差提供了样本有效学习,但在现实世界的数据集中往往限制性太强,其中特征可能对不同类别产生不同的影响。允许类特定的超平面斜率创建广义逻辑顺序回归,以样本效率为代价增加模型的灵活性。我们探索了广义模型的扩展到所有阈值的逻辑损失,并提出了一个正则化方法,这两个极端之间的插值。我们的方法,我们称之为连续广义有序逻辑,在一组完整的有序回归基准数据集上显着优于标准有序逻辑模型。我们进一步将这种方法扩展到深度学习,并表明它在一系列数据集和模态上与以前的模型相比具有竞争力或更低的预测误差。此外,深度学习有序回归的两个主要替代模型被证明是我们框架的特殊情况。

英文摘要:

Ordinal regression is a classification task where classes have an order and prediction error increases the further the predicted class is from the true class. The standard approach for modeling ordinal data involves fitting parallel separating hyperplanes that optimize a certain loss function. This assumption offers sample efficient learning via inductive bias, but is often too restrictive in real-world datasets where features may have varying effects across different categories. Allowing class-specific hyperplane slopes creates generalized logistic ordinal regression, increasing the flexibility of the model at a cost to sample efficiency. We explore an extension of the generalized model to the all-thresholds logistic loss and propose a regularization approach that interpolates between these two extremes. Our method, which we term continuously generalized ordinal logistic, significantly outperforms the standard ordinal logistic model over a thorough set of ordinal regression benchmark datasets. We further extend this method to deep learning and show that it achieves competitive or lower prediction error compared to previous models over a range of datasets and modalities. Furthermore, two primary alternative models for deep learning ordinal regression are shown to be special cases of our framework.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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