Results 31 to 40 of about 47,039 (298)

Sensing capacity for Markov random fields [PDF]

open access: yesProceedings. International Symposium on Information Theory, 2005. ISIT 2005., 2005
This paper computes the sensing capacity of a sensor network, with sensors of limited range, sensing a two-dimensional Markov random field, by modeling the sensing operation as an encoder. Sensor observations are dependent across sensors, and the sensor network output across different states of the environment is neither identically nor independently ...
Yaron Rachlin   +2 more
openaire   +2 more sources

Adaptive Gaussian Markov Random Fields with Applications in Human Brain Mapping [PDF]

open access: yes, 2005
Functional magnetic resonance imaging (fMRI) has become the standard technology in human brain mapping. Analyses of the massive spatio-temporal fMRI data sets often focus on parametric or nonparametric modeling of the temporal component, while spatial ...
Brezger, Andreas   +2 more
core   +1 more source

Saliency Map Estimation Using a Pixel-Pairwise-Based Unsupervised Markov Random Field Model

open access: yesMathematics, 2023
This work presents a Bayesian statistical approach to the saliency map estimation problem. More specifically, we formalize the saliency map estimation issue in the fully automatic Markovian framework.
Max Mignotte
doaj   +1 more source

Markov random topic fields [PDF]

open access: yesProceedings of the ACL-IJCNLP 2009 Conference Short Papers on - ACL-IJCNLP '09, 2009
Most approaches to topic modeling assume an independence between documents that is frequently violated. We present an topic model that makes use of one or more user-specified graphs describing relationships between documents. These graph are encoded in the form of a Markov random field over topics and serve to encourage related documents to have ...
openaire   +2 more sources

Deep Gaussian Markov Random Fields

open access: yesCoRR, 2020
Gaussian Markov random fields (GMRFs) are probabilistic graphical models widely used in spatial statistics and related fields to model dependencies over spatial structures. We establish a formal connection between GMRFs and convolutional neural networks (CNNs).
Per Sidén, Fredrik Lindsten
openaire   +3 more sources

Hierarchical non‐parametric Markov random field for image segmentation

open access: yesIET Computer Vision, 2017
Markov random fields (MRFs) are prominent in modelling image to handle image processing problems. However, they confront the bottleneck of model selection in further improving the performance.
Xiangrong Wang, Jieyu Zhao
doaj   +1 more source

An Efficient Gaussian Filter Based on Gaussian Symmetric Markov Random Field

open access: yesIEEE Access, 2022
This article presents a new image denoising algorithm that uses Gaussian Symmetric Markov random fields based on maximum a posteriori estimation. First, an image denoising model based on Gaussian Symmetric Markov random fields is built, and the image ...
Fusong Xiong   +3 more
doaj   +1 more source

Suggested Algorithm for Images Segmentation by Using Markov Random Field [PDF]

open access: yesالمجلة العراقية للعلوم الاحصائية, 2010
In this research, Markov Random Fields Models have been used in images processing, included algorithm suggested for image segmentation tha depends on the triple mixture normal distribution.
doaj   +1 more source

Hidden Markov Random Field for Multi-Agent Optimal Decision in Top-Coal Caving

open access: yesIEEE Access, 2020
Applying model-based learning for the optimal decision of the multi-agent system is not trivial due to the expensive price or even the impossibility of obtaining the ground truth for training the model of the complex environment.
Yi Yang   +5 more
doaj   +1 more source

Hidden Markov Random Fields

open access: yesThe Annals of Applied Probability, 1995
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Kunsch, Hans   +2 more
openaire   +3 more sources

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