Results 61 to 70 of about 116,234 (262)

Vector Autoregressive Hierarchical Hidden Markov Models for Extracting Finger Movements Using Multichannel Surface EMG Signals

open access: yesComplexity, 2018
We present a novel computational technique intended for the robust and adaptable control of a multifunctional prosthetic hand using multichannel surface electromyography.
Nebojša Malešević   +5 more
doaj   +1 more source

Introduction to Hidden Semi-Markov Models

open access: yes, 2018
The purpose of this volume is to present the theory of Markov and semi-Markov processes in a discrete-time, finite-state framework. Given this background, hidden versions of these processes are introduced and related estimation and filtering results developed. The approach is similar to the earlier book, Elliott et al. (1995).
John van der Hoek, Robert J. Elliott
openaire   +3 more sources

A Spectral Algorithm for Inference in Hidden Semi-Markov Models

open access: yesJournal of Machine Learning Research, 2014
Hidden semi-Markov models (HSMMs) are latent variable models which allow latent state persistence and can be viewed as a generalization of the popular hidden Markov models (HMMs). In this paper, we introduce a novel spectral algorithm to perform inference in HSMMs.
MelnykIgor, BanerjeeArindam
openaire   +3 more sources

Proper account of auto-correlations improves decoding performances of state-space (semi) Markov models

open access: yesPeer Community Journal
State-space models are widely used in ecology to infer hidden behaviors. This study develops an extensive numerical simulation-estimation experiment to evaluate the state decoding accuracy of four simple state-space models.
Bez, Nicolas   +8 more
doaj   +1 more source

HVGH: Unsupervised Segmentation for High-Dimensional Time Series Using Deep Neural Compression and Statistical Generative Model

open access: yesFrontiers in Robotics and AI, 2019
Humans perceive continuous high-dimensional information by dividing it into meaningful segments, such as words and units of motion. We believe that such unsupervised segmentation is also important for robots to learn topics such as language and motion ...
Masatoshi Nagano   +6 more
doaj   +1 more source

Efficient Estimation of Time-Dependent Brain Functional Connectivity Using Anatomical Connectivity Constraints

open access: yesIEEE Access, 2023
There is ongoing interest in the dynamics of resting state brain networks (RSNs) as potential predictors of cognitive and behavioural states. Multivariate Autoregressors (MAR) are used to model regional brain activity as a linear combination of past ...
Hernan Hernandez Larzabal   +6 more
doaj   +1 more source

Sequential Bayesian Learning for Hidden Semi-Markov Models

open access: yes, 2023
In this paper, we explore the class of the Hidden Semi-Markov Model (HSMM), a flexible extension of the popular Hidden Markov Model (HMM) that allows the underlying stochastic process to be a semi-Markov chain. HSMMs are typically used less frequently than their basic HMM counterpart due to the increased computational challenges when evaluating the ...
Aschermayr, Patrick   +1 more
openaire   +2 more sources

First-Order Uncertain Hidden Semi-Markov Process for Failure Prognostics With Scarce Data

open access: yesIEEE Access, 2020
Failure prognostics aims at predicting the object equipment's future degradation trend and derives the remaining useful life with a predefined failure threshold.
Jie Liu
doaj   +1 more source

Consistency of maximum likelihood estimation for some dynamical systems [PDF]

open access: yes, 2014
We consider the asymptotic consistency of maximum likelihood parameter estimation for dynamical systems observed with noise. Under suitable conditions on the dynamical systems and the observations, we show that maximum likelihood parameter estimation is ...
McGoff, Kevin   +3 more
core   +3 more sources

Infinite Structured Hidden Semi-Markov Models

open access: yes, 2014
23 pages, 10 ...
Huggins, Jonathan H., Wood, Frank
openaire   +2 more sources

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