4 papers
GeoAgent: Learning to Geolocate Everywhere with Reinforced Geographic Characteristics
Modi Jin, Yiming Zhang, Boyuan Sun +3
This paper presents GeoAgent, a model capable of reasoning closely with humans and deriving fine-grained address conclusions. Previous RL-based methods have achieved breakthroughs…
Statistical inference for multi-regime threshold Ornstein-Uhlenbeck processes
Yuecai Han, Dingwen Zhang
In this paper, we investigate the parameter estimation for threshold OrnsteinUhlenbeck processes. Least squares method is used to obtain continuous-type and discrete-ty…
Nonparametric Estimation for Stochastic Differential Equations Driven by Fractional Brownian Motion
Han Yuecai, Zhang Dingwen
We study the nonparametric Nadaraya-Watson estimator of the drift function for ergodic stochastic processes driven by fractional Brownian motion of Hurst parameter H > 1/2. The est…
Nonlinear Least Squares Estimator for Discretely Observed Reflected Stochastic Processes
Han Yuecai, Zhang Dingwen
We study the problem of parameter estimation for reflected stochastic processes driven by a standard Brownian motion. The estimator is obtained using nonlinear least squares method…