论文标题
双曲歧管回归
Hyperbolic Manifold Regression
论文作者
论文摘要
几何表示学习最近在几个机器学习设置中表现出了巨大的希望,从关系学习到语言处理和生成模型。在这项工作中,我们将对双曲线空间进行歧管值回归的问题作为许多相关机器学习应用程序的中间组件。特别是,通过提出将树的节点作为双曲线空间中的多种回归任务的问题,我们就两个具有挑战性的任务提出了一种新颖的观点:1)通过标签嵌入的分层分类和2)双曲线表示的分类法扩展。为了解决回归问题,我们考虑了以前的方法,并提出了两种在计算上更有利的新颖方法:一个参数深度学习模型,该模型由目标空间的测量学和非参数kernel-hethod所告知,我们也证明了多余的风险范围。我们的实验表明,利用双曲线几何形状的策略是有希望的。特别是,在分类学扩展设置中,我们发现基于双曲线的估计器在环境欧几里得空间中执行回归的方法显着优于方法。
Geometric representation learning has recently shown great promise in several machine learning settings, ranging from relational learning to language processing and generative models. In this work, we consider the problem of performing manifold-valued regression onto an hyperbolic space as an intermediate component for a number of relevant machine learning applications. In particular, by formulating the problem of predicting nodes of a tree as a manifold regression task in the hyperbolic space, we propose a novel perspective on two challenging tasks: 1) hierarchical classification via label embeddings and 2) taxonomy extension of hyperbolic representations. To address the regression problem we consider previous methods as well as proposing two novel approaches that are computationally more advantageous: a parametric deep learning model that is informed by the geodesics of the target space and a non-parametric kernel-method for which we also prove excess risk bounds. Our experiments show that the strategy of leveraging the hyperbolic geometry is promising. In particular, in the taxonomy expansion setting, we find that the hyperbolic-based estimators significantly outperform methods performing regression in the ambient Euclidean space.