no code implementations • ICML 2020 • Robert Mattila, Cristian Rojas, Eric Moulines, Vikram Krishnamurthy, Bo Wahlberg
Can the parameters of a hidden Markov model (HMM) be estimated from a single sweep through the observations -- and additionally, without being trapped at a local optimum in the likelihood surface?
no code implementations • 24 Apr 2024 • Cristian Rojas, Frank Algra-Maschio, Mark Andrejevic, Travis Coan, John Cook, Yuan-Fang Li
In this study, we address this gap by developing a two-step hierarchical model, the Augmented CARDS model, specifically designed for detecting contrarian climate claims on Twitter.
no code implementations • NeurIPS 2017 • Robert Mattila, Cristian Rojas, Vikram Krishnamurthy, Bo Wahlberg
This paper considers a number of related inverse filtering problems for hidden Markov models (HMMs).