Title
Learning to Smooth with Bidirectional Predictive State Inference Machines.
Abstract
We present the Smoothing Machine (SMACH, pronounced \"smash\"), a dynamical system learning algorithm based on chain Conditional Random Fields (CRFs) with latent states. Unlike previous methods, SMACH is designed to optimize prediction performance when we have information from both past and future observations. By leveraging Predictive State Representations (PSRs), we model beliefs about latent states through predictive states—an alternative but equivalent representation that depends directly on observable quantities. Predictive states enable the use of well-developed supervised learning approaches in place of local-optimum-prone methods like EM: we learn regressors or classifiers that can approximate message passing and marginalization in the space of predictive states. We provide theoretical guarantees on smoothing performance and we empirically verify the efficacy of SMACH on several dynamical system benchmarks.
Year
Venue
Field
2016
UAI
Conditional random field,Observable,Inference,Computer science,Supervised learning,Smoothing,Artificial intelligence,Message passing,Dynamical system,CRFS,Machine learning
DocType
Citations 
PageRank 
Conference
1
0.35
References 
Authors
20
5
Name
Order
Citations
PageRank
Wen Sun12810.46
Roberto Capobianco2409.78
Geoffrey J. Gordon33430265.37
J. Andrew Bagnell43919217.49
Byron Boots547150.73