Tootfinder

Optimization Outperforms Unscented Techniques for Nonlinear Smoothing
Payton Howell, Aleksandr Aravkin
https://arxiv.org/abs/2510.03846 https://arxiv.org/p…

Optimization Outperforms Unscented Techniques for Nonlinear Smoothing
We review optimization-based approaches to smoothing nonlinear dynamical systems. These approaches leverage the fact that the Extended Kalman Filter and corresponding smoother can be framed as the Gauss-Newton method for a nonlinear least squares maximum a posteriori loss, and stabilized with standard globalization techniques. We compare the performance of the Optimized Kalman Smoother (OKS) to Unscented Kalman smoothing techniques, and show that they achieve significant improvement for highly …

Geopolitical Barriers to Globalization
Tianyu Fan, Mai Wo, Wei Xiang
https://arxiv.org/abs/2509.12084 https://arxiv.org/pdf/2509.12084

Geopolitical Barriers to Globalization
This paper systematically estimates and quantifies how geopolitical alignment shapes global trade across three distinct eras: the Cold War, hyper-globalization, and contemporary fragmentation. We construct a novel measure of bilateral alignment using large language models to compile and analyze 833,485 political events spanning 193 countries from 1950 to 2024. Our analysis reveals that trade flows systematically track geopolitical alignment in both bilateral relationships and aggregate patterns…

Replaced article(s) found for econ.GN. https://arxiv.org/list/econ.GN/new
[1/1]:
- Geopolitical Barriers to Globalization
Tianyu Fan, Mai Wo, Wei Xiang
https://…