We introduce a novel stochastic variational inference method for Gaussian process ($\mathcal{GP}$) regression, by deriving a posterior over a learnable set of coresets: i.e., over pseudo-input/output, weighted pairs. Unlike former free-form variational families for stochastic inference, our coreset-based variational $\mathcal{GP}$ (CVGP) is defined in terms of the $\mathcal{GP}$ prior and the (weighted) data likelihood. This formulation naturally incorporates inductive biases of the prior, and ensures its kernel and likelihood dependencies are shared with the posterior. We derive a variational lower-bound on the log-marginal likelihood by marginalizing over the latent $\mathcal{GP}$ coreset variables, and show that CVGP's lower-bound is amenable to stochastic optimization. CVGP reduces the dimensionality of the variational parameter search space to linear $\mathcal{O}(M)$ complexity, while ensuring numerical stability at $\mathcal{O}(M^3)$ time complexity and $\mathcal{O}(M^2)$ space complexity.
Scalable Learning of Multivariate Distributions via Coresets
Lamarr Institute for ML & AI, TU Dortmund(拉马尔人工智能与机器学习研究所,多特蒙德技术大学);Scientific Computing Center, Karlsruhe Institute of Technology(卡尔斯鲁厄理工学院科学计算中心);Department of Statistics, TU Dortmund(多特蒙德技术大学统计学系)
ARM: Attention with Routed-Memory for Learnable Sparse Control
University of Toronto(多伦多大学);Vector Institute(向量研究所);Université de Montréal(蒙特利尔大学);Mila - Quebec AI Institute(Mila-魁北克人工智能研究所);RIKEN AIP(日本理化学研究所革新智能统合研究中心);Western University(韦仕敦大学)
The Weakest Link Tells It All: Outcome-Supervised Process Reward Modeling via Learnable Credit Assignment
National Engineering Research Center of Software Engineering, Peking University(北京大学软件工程国家工程研究中心);School of Computer Science, Peking University(北京大学计算机学院);Key Laboratory of High Confidence Software Technologies, Ministry of Education(教育部高可信软件技术重点实验室);GRG Banking Equipment Co., Ltd.(广电运通金融电子股份有限公司);Center on Frontiers of Computing Studies, Peking University(北京大学计算前沿研究中心);Peking University Information Technology Institute (Tianjin Binhai)(北京大学(天津滨海)信息技术研究院)