Results 21 to 30 of about 73,803 (311)

Hidden Semi-Markov Models-Based Visual Perceptual State Recognition for Pilots

open access: yesSensors, 2023
Pilots’ loss of situational awareness is one of the human factors affecting aviation safety. Numerous studies have shown that pilot perception errors are one of the main reasons for a lack of situational awareness without a proper system to detect these ...
Lina Gao, Changyuan Wang, Gongpu Wu
doaj   +1 more source

A statistical multiresolution approach for face recognition using structural hidden Markov models [PDF]

open access: yes, 2007
This paper introduces a novel methodology that combines the multiresolution feature of the discrete wavelet transform (DWT) with the local interactions of the facial structures expressed through the structural hidden Markov model (SHMM).
A. Amira   +12 more
core   +1 more source

Research on HMM based link prediction method in heterogeneous network

open access: yesTongxin xuebao, 2022
In order to solve the problem that incomplete mining of structural information and semantic information in heterogeneous networks, a link prediction method combining meta-path-based analysis and hidden Markov model was proposed for link prediction of ...
Rong QIAN   +4 more
doaj   +2 more sources

The Application of Baum-Welch Algorithm in Multistep Attack

open access: yesThe Scientific World Journal, 2014
The biggest difficulty of hidden Markov model applied to multistep attack is the determination of observations. Now the research of the determination of observations is still lacking, and it shows a certain degree of subjectivity.
Yanxue Zhang, Dongmei Zhao, Jinxing Liu
doaj   +1 more source

Broad Phonetic Classification of ASR using Visual Based Features [PDF]

open access: yesThe Egyptian Journal of Language Engineering, 2020
: This paper presents a novel method of classifying speech phonemes. Four hybrid techniques based on the acoustic-phonetic approach and pattern recognition approach are used to emphasize the principle idea of this research.
Doaa Lehabik   +3 more
doaj   +1 more source

Asymmetric hidden Markov models [PDF]

open access: yesInternational Journal of Approximate Reasoning, 2017
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Marcos L. P. Bueno   +3 more
openaire   +3 more sources

Study on driver’s turning intention recognition hybrid model of GHMM and GGAP-RBF neural network

open access: yesAdvances in Mechanical Engineering, 2018
The accuracy and real time are crucial in turning intention recognition. Therefore, a hybrid model of Gaussian mixture hidden Markov and generalized growing and pruning algorithm for radial basis function neural network is constructed to recognize driver
Shu Wang, Qiang Yu, Xuan Zhao
doaj   +1 more source

Performance of hidden Markov model and dynamic Bayesian network classifiers on handwritten Arabic word recognition [PDF]

open access: yes, 2011
This paper presents a comparative study of two machine learning techniques for recognizing handwritten Arabic words, where hidden Markov models (HMMs) and dynamic Bayesian networks (DBNs) were evaluated.
Jinchang Ren   +11 more
core   +1 more source

fHMM: Hidden Markov Models for Financial Time Series in R

open access: yesJournal of Statistical Software
Hidden Markov models constitute a versatile class of statistical models for time series that are driven by hidden states. In financial applications, the hidden states can often be linked to market regimes such as bearish and bullish markets or ...
Lennart Oelschläger   +2 more
doaj   +1 more source

Error statistics of hidden Markov model and hidden Boltzmann model results

open access: yesBMC Bioinformatics, 2009
Background Hidden Markov models and hidden Boltzmann models are employed in computational biology and a variety of other scientific fields for a variety of analyses of sequential data.
Newberg Lee A
doaj   +1 more source

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