no code implementations • 4 Feb 2023 • Jiacheng Zhu, JieLin Qiu, Aritra Guha, Zhuolin Yang, XuanLong Nguyen, Bo Li, Ding Zhao
Our work provides a new perspective of model robustness through the lens of Wasserstein geodesic-based interpolation with a practical off-the-shelf strategy that can be combined with existing robust training methods.
no code implementations • 8 Nov 2022 • Cheryl Flynn, Aritra Guha, Subhabrata Majumdar, Divesh Srivastava, Zhengyi Zhou
New technologies and the availability of geospatial data have drawn attention to spatio-temporal biases present in society.
no code implementations • 15 Feb 2021 • Sunrit Chakraborty, Aritra Guha, Rayleigh Lei, XuanLong Nguyen
Analysis of heterogeneous patterns in complex spatio-temporal data finds usage across various domains in applied science and engineering, including training autonomous vehicles to navigate in complex traffic scenarios.
1 code implementation • 7 Feb 2021 • Jiacheng Zhu, Aritra Guha, Dat Do, Mengdi Xu, XuanLong Nguyen, Ding Zhao
We introduce a formulation of optimal transport problem for distributions on function spaces, where the stochastic map between functional domains can be partially represented in terms of an (infinite-dimensional) Hilbert-Schmidt operator mapping a Hilbert space of functions to another.
no code implementations • 1 Jan 2021 • Debarghya Mukherjee, Aritra Guha, Justin Solomon, Yuekai Sun, Mikhail Yurochkin
In light of recent advances in solving the OT problem, OT distances are widely used as loss functions in minimum distance estimation.
no code implementations • 18 Jun 2020 • Aritra Guha, Rayleigh Lei, Jiacheng Zhu, XuanLong Nguyen, Ding Zhao
These distance metrics can serve as an objective for assessing the stability of an interaction learning algorithm.
1 code implementation • 27 May 2019 • Mikhail Yurochkin, Aritra Guha, Yuekai Sun, XuanLong Nguyen
We propose Dirichlet Simplex Nest, a class of probabilistic models suitable for a variety of data types, and develop fast and provably accurate inference algorithms by accounting for the model's convex geometry and low dimensional simplicial structure.
1 code implementation • NeurIPS 2019 • Mikhail Yurochkin, Zhiwei Fan, Aritra Guha, Paraschos Koutris, XuanLong Nguyen
We develop new models and algorithms for learning the temporal dynamics of the topic polytopes and related geometric objects that arise in topic model based inference.
1 code implementation • NeurIPS 2017 • Mikhail Yurochkin, Aritra Guha, XuanLong Nguyen
We propose new algorithms for topic modeling when the number of topics is unknown.