To see the other types of publications on this topic, follow the link: Bayesian recovery.

Journal articles on the topic 'Bayesian recovery'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Bayesian recovery.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Zhao, Juan, Xia Bai, Tao Shan, and Ran Tao. "Block Sparse Bayesian Recovery with Correlated LSM Prior." Wireless Communications and Mobile Computing 2021 (October 6, 2021): 1–11. http://dx.doi.org/10.1155/2021/9942694.

Full text
Abstract:
Compressed sensing can recover sparse signals using a much smaller number of samples than the traditional Nyquist sampling theorem. Block sparse signals (BSS) with nonzero coefficients occurring in clusters arise naturally in many practical scenarios. Utilizing the sparse structure can improve the recovery performance. In this paper, we consider recovering arbitrary BSS with a sparse Bayesian learning framework by inducing correlated Laplacian scale mixture (LSM) prior, which can model the dependence of adjacent elements of the block sparse signal, and then a block sparse Bayesian learning algorithm is proposed via variational Bayesian inference. Moreover, we present a fast version of the proposed recovery algorithm, which does not involve the computation of matrix inversion and has robust recovery performance in the low SNR case. The experimental results with simulated data and ISAR imaging show that the proposed algorithms can efficiently reconstruct BSS and have good antinoise ability in noisy environments.
APA, Harvard, Vancouver, ISO, and other styles
2

Wang, Haitao, Qunyi He, Shiwei Peng, and Xiangyang Zeng. "Indoor Sound Source Localization via Inverse Element-Free Simulation Based on Joint Sparse Recovery." Electronics 13, no. 1 (2023): 69. http://dx.doi.org/10.3390/electronics13010069.

Full text
Abstract:
Indoor sound source localization is a key technique in many engineering applications, and an inverse element-free method based on joint sparse recovery in a Bayesian framework is proposed for reverberant environments. In this method, a discrete wave model is constructed to represent the relationships between the sampled sound pressure and the source intensity distribution, and localization in the reverberant environment is realized via inversion from the wave model. By constructing a compact supporting domain, the source intensity can be sparsely represented in subdomains, and the sparse Bayesian framework is used to recover the source intensity. In particular, joint sparse recovery in the frequency domain is exploited to improve the recovery performance. Numerical and experimental verifications show that, compared with another state-of-the-art method, the proposed method achieves high source-localization accuracy and low sidelobes with low computational complexity in highly reverberant environments.
APA, Harvard, Vancouver, ISO, and other styles
3

Calvetti, D., and E. Somersalo. "Recovery of shapes: hypermodels and Bayesian learning." Journal of Physics: Conference Series 124 (July 1, 2008): 012014. http://dx.doi.org/10.1088/1742-6596/124/1/012014.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Sun, Shouwang, Sheng Jiao, Qi Hu, et al. "Missing Structural Health Monitoring Data Recovery Based on Bayesian Matrix Factorization." Sustainability 15, no. 4 (2023): 2951. http://dx.doi.org/10.3390/su15042951.

Full text
Abstract:
The exposure of bridge health-monitoring systems to extreme conditions often results in missing data, which constrains the health monitoring system from working. Therefore, there is an urgent need for an efficient data cleaning method. With the development of big data and machine-learning techniques, several methods for missing-data recovery have emerged. However, optimization-based methods may experience overfitting and demand extensive tuning of parameters, and trained models may still have substantial errors when applied to unseen datasets. Furthermore, many methods can only process monitoring data from a single sensor at a time, so the spatiotemporal dependence among monitoring data from different sensors cannot be extracted to recover missing data. Monitoring data from multiple sensors can be organized in the form of matrix. Therefore, matrix factorization is an appropriate way to handle monitoring data. To this end, a hierarchical probabilistic model for matrix factorization is formulated under a fully Bayesian framework by incorporating a sparsity-inducing prior over spatiotemporal factors. The spatiotemporal dependence is modeled to reconstruct the monitoring data matrix to achieve the missing-data recovery. Through experiments using continuous monitoring data of an in-service bridge, the proposed method shows good performance of missing-data recovery. Furthermore, the effect of missing data on the preset rank of matrix is also investigated. The results show that the model can achieve higher accuracy of missing-data recovery with higher preset rank under the same case of missing data.
APA, Harvard, Vancouver, ISO, and other styles
5

Johnson, Michael-David, Jacques Cuenca, Timo Lähivaara, et al. "Bayesian reconstruction of surface shape from phaseless scattered acoustic data." Journal of the Acoustical Society of America 156, no. 6 (2024): 4024–36. https://doi.org/10.1121/10.0034549.

Full text
Abstract:
The recovery of the properties or geometry of a rough surface from scattered sound is of interest in many applications, including medicine, water engineering, or structural health monitoring. Existing approaches to reconstruct the roughness profile of a scattering surface based on wave scattering have no intrinsic way of predicting the uncertainty of the reconstruction. In an attempt to recover this uncertainty, a Bayesian framework, and more explicitly, an adaptive Metropolis scheme, is used to infer the properties of a rough surface, parameterised as a superposition of sinusoidal components. The Kirchhoff approximation is used in the present work as the underlying model of wave scattering, and is constrained by the assumption of surface smoothness. This implies a validity region in the parameter space, which is incorporated in the Bayesian formulation, making the resulting method physics informed compared to data-based approaches. For a three-parameter sinusoidal surface and a rough surface with a random roughness profile, physical experiments were conducted to collect scattered field data. The models were then tested on the experimental data. The recovery offers insight of the Bayesian approach results expressed in terms of confidence intervals, and could be used as a method to identify uncertainty.
APA, Harvard, Vancouver, ISO, and other styles
6

Gan, Wei, Lu-ping Xu, Zhe Su, and Hua Zhang. "Bayesian Hypothesis Testing Based Recovery for Compressed Sensing." Journal of Electronics & Information Technology 33, no. 11 (2011): 2640–46. http://dx.doi.org/10.3724/sp.j.1146.2011.00151.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Long, Zhen, Ce Zhu, Jiani Liu, and Yipeng Liu. "Bayesian Low Rank Tensor Ring for Image Recovery." IEEE Transactions on Image Processing 30 (2021): 3568–80. http://dx.doi.org/10.1109/tip.2021.3062195.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Korki, Mehdi, Hadi Zayyani, and Jingxin Zhang. "Bayesian Hypothesis Testing for Block Sparse Signal Recovery." IEEE Communications Letters 20, no. 3 (2016): 494–97. http://dx.doi.org/10.1109/lcomm.2016.2518169.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Brooks, S. P., E. A. Catchpole, B. J. T. Morgan, and S. C. Barry. "On the Bayesian Analysis of Ring-Recovery Data." Biometrics 56, no. 3 (2000): 951–56. http://dx.doi.org/10.1111/j.0006-341x.2000.00951.x.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Wang, Lu, Lifan Zhao, Guoan Bi, and Chunru Wan. "Hierarchical Sparse Signal Recovery by Variational Bayesian Inference." IEEE Signal Processing Letters 21, no. 1 (2014): 110–13. http://dx.doi.org/10.1109/lsp.2013.2292589.

Full text
APA, Harvard, Vancouver, ISO, and other styles
11

Huang, Kaide, Yao Guo, Xuemei Guo, and Guoli Wang. "Heterogeneous Bayesian compressive sensing for sparse signal recovery." IET Signal Processing 8, no. 9 (2014): 1009–17. http://dx.doi.org/10.1049/iet-spr.2013.0501.

Full text
APA, Harvard, Vancouver, ISO, and other styles
12

Ahmed, Irfan, Aftab Khan, Nasir Ahmad, NasruMinallah, and Hazrat Ali. "Speech Signal Recovery Using Block Sparse Bayesian Learning." Arabian Journal for Science and Engineering 45, no. 3 (2019): 1567–79. http://dx.doi.org/10.1007/s13369-019-04080-6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
13

Zhang, Shuanghui, Yongxiang Liu, Xiang Li, and Guoan Bi. "Variational Bayesian Sparse Signal Recovery With LSM Prior." IEEE Access 5 (2017): 26690–702. http://dx.doi.org/10.1109/access.2017.2765831.

Full text
APA, Harvard, Vancouver, ISO, and other styles
14

LI, Jia. "Joint Bayesian and Greedy Recovery for Compressive Sensing." Chinese Journal of Electronics 29, no. 5 (2020): 945–51. http://dx.doi.org/10.1049/cje.2020.08.010.

Full text
APA, Harvard, Vancouver, ISO, and other styles
15

Brooks, S. P., R. King, and B. J. T. Morgan. "A Bayesian approach to combining animal abundance and demographic data." Animal Biodiversity and Conservation 27, no. 1 (2004): 515–29. http://dx.doi.org/10.32800/abc.2004.27.0515.

Full text
Abstract:
In studies of wild animals, one frequently encounters both count and mark-recapture-recovery data. Here, we consider an integrated Bayesian analysis of ring¿recovery and count data using a state-space model. We then impose a Leslie-matrix-based model on the true population counts describing the natural birth-death and age transition processes. We focus upon the analysis of both count and recovery data collected on British lapwings (Vanellus vanellus) combined with records of the number of frost days each winter. We demonstrate how the combined analysis of these data provides a more robust inferential framework and discuss how the Bayesian approach using MCMC allows us to remove the potentially restrictive normality assumptions commonly assumed for analyses of this sort. It is shown how WinBUGS may be used to perform the Bayesian analysis. WinBUGS code is provided and its performance is critically discussed.
APA, Harvard, Vancouver, ISO, and other styles
16

Zhanjun, Hao, Li Beibei, and Dang Xiaochao. "A Signal Recovery Method Based on Bayesian Compressive Sensing." Mathematical Problems in Engineering 2019 (February 11, 2019): 1–13. http://dx.doi.org/10.1155/2019/7235239.

Full text
Abstract:
In a precise positioning system, weak signal errors caused by the influence of a human body on signal transmission in complex environments are a main cause of the reduced reliability of communication and positioning accuracy. Therefore, eliminating the influence of interference from human crawling waves on signal transmissions in complex environments is an important task in improving positioning systems. To conclude, an experimental environment is designed in this paper and a method using the Ultra-Wideband (UWB) Local Positioning System II (UWB LPS), called Bayesian Compressed Sensing-Crawling Waves (BCS-CW), is proposed to eliminate the impact of crawling waves using Bayesian compressive sensing. First, analyse the transmission law for crawling waves on the human body. Second, Bayesian compressive sensing is used to recover the UWB crawling wave signal. Then, the algorithm is combined with the maximum likelihood estimation and iterative approximation algorithms to determine the label position. Finally, through experimental verification, the positioning accuracy of this method is shown to be greatly improved compared to that of other algorithms.
APA, Harvard, Vancouver, ISO, and other styles
17

Riecke, Thomas V., Dan Gibson, Alan G. Leach, Mark S. Lindberg, Michael Schaub, and James S. Sedinger. "Bayesian mark–recapture–resight–recovery models: increasing user flexibility in the BUGS language." Ecosphere 12, no. 12 (2021): e03810. https://doi.org/10.5281/zenodo.5996370.

Full text
Abstract:
<strong>Abstract</strong> Estimating demographic parameters of interest is a critical component of applied conservation biology and evolutionary ecology, where demographic models and demographic data have become increasingly complex over the last several decades. These advances have been spurred by the development and use of information theoretic approaches, programs such as MARK and SURGE, and Bayesian inference. The use of Bayesian analyses has also become increasingly popular, where WinBUGS, JAGS, Stan, and NIMBLE provide increased user flexibility. Despite recent advances in Bayesian demographic modeling, some capture&ndash;recapture models that have been implemented in Program MARK remain unavailable to quantitative ecologists that wish to use Bayesian modeling approaches. We provide novel parameterizations of capture&ndash;mark&ndash;recapture&ndash;resight&ndash;recovery models implemented in Program MARK that have not yet been implemented in the BUGS language. Simulations show that the models described herein provide accurate parameter estimates. Our parameterizations of these models can easily be extended to estimate additional parameters such as entry probability, additional live states, or cause-specific mortality rates. Additionally, implementing these models in a Bayesian framework allows users to readily estimate parameters as mixtures, incorporate random individual or temporal variation, and use informative priors to assist with parameter estimation.
APA, Harvard, Vancouver, ISO, and other styles
18

Engemann, Kristie M., and Michael T. Owyang. "WHATEVER HAPPENED TO THE BUSINESS CYCLE? A BAYESIAN ANALYSIS OF JOBLESS RECOVERIES." Macroeconomic Dynamics 14, no. 5 (2010): 709–26. http://dx.doi.org/10.1017/s1365100509990812.

Full text
Abstract:
During the typical recovery from U.S. postwar period economic downturns, employment recovers to its prerecession level within months of the output trough. However, during the past two recoveries, employment has taken up to three years to achieve its prerecession benchmark. We propose a formal empirical model of business cycles with recovery periods to demonstrate that the past two recoveries have been statistically different from previous experiences. We find that this difference can be attributed to a shift in the speed of transition between business cycle regimes. Moreover, we find this shift results from both durable and nondurable manufacturing sectors losing their cyclical characteristics. We argue that this finding of acyclicality in post-1980 manufacturing sectors is consistent with previous hypotheses (e.g., improved inventory management) regarding the reduction in macroeconomic volatility over the same period. These results suggest a link between the two phenomena, which have heretofore been studied separately.
APA, Harvard, Vancouver, ISO, and other styles
19

Yi, Ming, Meng Wang, Evangelos Farantatos, and Tapas Barik. "Bayesian robust hankel matrix completion with uncertainty modeling for synchrophasor data recovery." ACM SIGEnergy Energy Informatics Review 2, no. 1 (2022): 1–19. http://dx.doi.org/10.1145/3527579.3527580.

Full text
Abstract:
Synchrophasor data suffer from quality issues like missing and bad data. Exploiting the low-rankness of the Hankel matrix of the synchrophasor data, this paper formulates the data recovery problem as a robust low-rank Hankel matrix completion problem and proposes a Bayesian data recovery method that estimates the posterior distribution of synchrophasor data from partial observations. In contrast to the deterministic approaches, our proposed Bayesian method provides an uncertainty index to evaluate the confidence of each estimation. To the best of our knowledge, this is the first method that provides confidence measure for synchrophasor data recovery. Numerical experiments on synthetic data and recorded synchrophasor data demonstrate that our method outperforms existing low-rank matrix completion methods.
APA, Harvard, Vancouver, ISO, and other styles
20

Routtenberg, Tirza. "Non-Bayesian Estimation Framework for Signal Recovery on Graphs." IEEE Transactions on Signal Processing 69 (2021): 1169–84. http://dx.doi.org/10.1109/tsp.2021.3054995.

Full text
APA, Harvard, Vancouver, ISO, and other styles
21

Rajeshwari, T., and C. Thangamani. "Attack Impact Discovery and Recovery with Dynamic Bayesian Networks." Asian Journal of Computer Science and Technology 8, S1 (2019): 74–79. http://dx.doi.org/10.51983/ajcst-2019.8.s1.1953.

Full text
Abstract:
The network attacks are discovered using the Intrusion Detection Systems (IDS). Anomaly, signature and compound attack detection schemes are employed to fetch malicious data traffic activities. The attack impact analysis operations are carried out to discover the malicious objects in the network. The system objects are contaminated with process injection or hijacking. The attack ramification model discovers the contaminated objects. The dependency networks are built to model the information flow over the objects in the network. The dependency network is a directed graph built to indicate the data communication over the objects. The attack ramification models are designed with intrusion root information. The attack ramifications are applied to identify the malicious objects and contaminated objects. The attack ramifications are discovered with the information flows from the attack sources. The Attack Ramification with Bayesian Network (ARBN) scheme discovers the attack impact without the knowledge of the intrusion root. The probabilistic reasoning approach is employed to analyze the object state for ramification process. The objects lifetime is divided into temporal slices to verify the object state changes. The system call traces and object slices are correlated to construct the Temporal Dependency Network (TDN). The Bayesian Network (BN) is constructed with the uncertain data communication activities extracted from the TDN. The attack impact is fetched with loopy belief propagation on the BN model. The network security system is built with attack impact analysis and recovery operations. Live traffic data analysis process is carried out with improved temporal slicing concepts. Attack Ramification and Recovery with Dynamic Bayesian Network (ARRDBN) is built to support attack impact analysis and recovery tasks. The unsupervised attack handling mechanism automatically discovers the feasible solution for the associated attacks.
APA, Harvard, Vancouver, ISO, and other styles
22

Almond, Russell, Duanli Yan, and Lisa Hemat. "Parameter Recovery Studies With a Diagnostic Bayesian Network Model." Behaviormetrika 35, no. 2 (2008): 159–85. http://dx.doi.org/10.2333/bhmk.35.159.

Full text
APA, Harvard, Vancouver, ISO, and other styles
23

Giri, Ritwik, and Bhaskar Rao. "Learning Distributional Parameters for Adaptive Bayesian Sparse Signal Recovery." IEEE Computational Intelligence Magazine 11, no. 4 (2016): 14–23. http://dx.doi.org/10.1109/mci.2016.2601700.

Full text
APA, Harvard, Vancouver, ISO, and other styles
24

Parlikad, Ajith Kumar, and Duncan McFarlane. "A Bayesian decision support system for vehicle component recovery." International Journal of Sustainable Manufacturing 1, no. 4 (2009): 415. http://dx.doi.org/10.1504/ijsm.2009.031362.

Full text
APA, Harvard, Vancouver, ISO, and other styles
25

Wang, Lu, Lifan Zhao, Lei Yu, Jingjing Wang, and Guoan Bi. "Structured Bayesian learning for recovery of clustered sparse signal." Signal Processing 166 (January 2020): 107255. http://dx.doi.org/10.1016/j.sigpro.2019.107255.

Full text
APA, Harvard, Vancouver, ISO, and other styles
26

Razi, Abolfazl. "Bayesian Signal Recovery Under Measurement Matrix Uncertainty: Performance Analysis." IEEE Access 7 (2019): 102356–65. http://dx.doi.org/10.1109/access.2019.2930236.

Full text
APA, Harvard, Vancouver, ISO, and other styles
27

Gong, Ting. "Bayesian sparse signal recovery based on log-Laplacian prior." Journal of Applied Remote Sensing 12, no. 04 (2018): 1. http://dx.doi.org/10.1117/1.jrs.12.045003.

Full text
APA, Harvard, Vancouver, ISO, and other styles
28

Huang, Zhenhao, Guoxu Zhou, Yuning Qiu, Xinqi Chen, and Qibin Zhao. "Kernel Bayesian tensor ring decomposition for multiway data recovery." Neural Networks 189 (September 2025): 107500. https://doi.org/10.1016/j.neunet.2025.107500.

Full text
APA, Harvard, Vancouver, ISO, and other styles
29

Green, Dylan, Jonathan Lindbloom, and Anne Gelb. "Complex-Valued Signal Recovery Using a Generalized Bayesian LASSO." SIAM/ASA Journal on Uncertainty Quantification 13, no. 2 (2025): 831–61. https://doi.org/10.1137/24m1644778.

Full text
APA, Harvard, Vancouver, ISO, and other styles
30

Bonkhoff, Anna K., Thomas Hope, Danilo Bzdok, et al. "Bringing proportional recovery into proportion: Bayesian modelling of post-stroke motor impairment." Brain 143, no. 7 (2020): 2189–206. http://dx.doi.org/10.1093/brain/awaa146.

Full text
Abstract:
Abstract Accurate predictions of motor impairment after stroke are of cardinal importance for the patient, clinician, and healthcare system. More than 10 years ago, the proportional recovery rule was introduced by promising that high-fidelity predictions of recovery following stroke were based only on the initially lost motor function, at least for a specific fraction of patients. However, emerging evidence suggests that this recovery rule is subject to various confounds and may apply less universally than previously assumed. Here, we systematically revisited stroke outcome predictions by applying strategies to avoid confounds and fitting hierarchical Bayesian models. We jointly analysed 385 post-stroke trajectories from six separate studies—one of the largest overall datasets of upper limb motor recovery. We addressed confounding ceiling effects by introducing a subset approach and ensured correct model estimation through synthetic data simulations. Subsequently, we used model comparisons to assess the underlying nature of recovery within our empirical recovery data. The first model comparison, relying on the conventional fraction of patients called ‘fitters’, pointed to a combination of proportional to lost function and constant recovery. ‘Proportional to lost’ here describes the original notion of proportionality, indicating greater recovery in case of a more severe initial impairment. This combination explained only 32% of the variance in recovery, which is in stark contrast to previous reports of &amp;gt;80%. When instead analysing the complete spectrum of subjects, ‘fitters’ and ‘non-fitters’, a combination of proportional to spared function and constant recovery was favoured, implying a more significant improvement in case of more preserved function. Explained variance was at 53%. Therefore, our quantitative findings suggest that motor recovery post-stroke may exhibit some characteristics of proportionality. However, the variance explained was substantially reduced compared to what has previously been reported. This finding motivates future research moving beyond solely behaviour scores to explain stroke recovery and establish robust and discriminating single-subject predictions.
APA, Harvard, Vancouver, ISO, and other styles
31

Kosgolla, Janaka, Doug Smith, Reinhart Crystal, and Evans Jennifer. "Am I in Recovery? Bayesian Network Analysis to Understand Mental Models of Adolescent Recovery." Drug and Alcohol Dependence 260 (July 2024): 110587. http://dx.doi.org/10.1016/j.drugalcdep.2023.110587.

Full text
APA, Harvard, Vancouver, ISO, and other styles
32

Adams, Jadie, Steven Lu, Krzysztof M. Gorski, Graca Rocha, and Kiri L. Wagstaff. "Cosmic Microwave Background Recovery: A Graph-Based Bayesian Convolutional Network Approach." Proceedings of the AAAI Conference on Artificial Intelligence 37, no. 13 (2023): 15640–46. http://dx.doi.org/10.1609/aaai.v37i13.26854.

Full text
Abstract:
The cosmic microwave background (CMB) is a significant source of knowledge about the origin and evolution of our universe. However, observations of the CMB are contaminated by foreground emissions, obscuring the CMB signal and reducing its efficacy in constraining cosmological parameters. We employ deep learning as a data-driven approach to CMB cleaning from multi-frequency full-sky maps. In particular, we develop a graph-based Bayesian convolutional neural network based on the U-Net architecture that predicts cleaned CMB with pixel-wise uncertainty estimates. We demonstrate the potential of this technique on realistic simulated data based on the Planck mission. We show that our model ac- accurately recovers the cleaned CMB sky map and resulting angular power spectrum while identifying regions of uncertainty. Finally, we discuss the current challenges and the path forward for deploying our model for CMB recovery on real observations.
APA, Harvard, Vancouver, ISO, and other styles
33

Shekaramiz, Mohammad, and Todd K. Moon. "Compressive Sensing via Variational Bayesian Inference under Two Widely Used Priors: Modeling, Comparison and Discussion." Entropy 25, no. 3 (2023): 511. http://dx.doi.org/10.3390/e25030511.

Full text
Abstract:
Compressive sensing is a sub-Nyquist sampling technique for efficient signal acquisition and reconstruction of sparse or compressible signals. In order to account for the sparsity of the underlying signal of interest, it is common to use sparsifying priors such as Bernoulli–Gaussian-inverse Gamma (BGiG) and Gaussian-inverse Gamma (GiG) priors on the components of the signal. With the introduction of variational Bayesian inference, the sparse Bayesian learning (SBL) methods for solving the inverse problem of compressive sensing have received significant interest as the SBL methods become more efficient in terms of execution time. In this paper, we consider the sparse signal recovery problem using compressive sensing and the variational Bayesian (VB) inference framework. More specifically, we consider two widely used Bayesian models of BGiG and GiG for modeling the underlying sparse signal for this problem. Although these two models have been widely used for sparse recovery problems under various signal structures, the question of which model can outperform the other for sparse signal recovery under no specific structure has yet to be fully addressed under the VB inference setting. Here, we study these two models specifically under VB inference in detail, provide some motivating examples regarding the issues in signal reconstruction that may occur under each model, perform comparisons and provide suggestions on how to improve the performance of each model.
APA, Harvard, Vancouver, ISO, and other styles
34

Budiana, Stevanny, Felivia Kusnadi, and Robyn Irawan. "BAYESIAN ADDITIVE REGRESSION TREE APPLICATION FOR PREDICTING MATERNITY RECOVERY RATE OF GROUP LONG-TERM DISABILITY INSURANCE." BAREKENG: Jurnal Ilmu Matematika dan Terapan 17, no. 1 (2023): 0135–46. http://dx.doi.org/10.30598/barekengvol17iss1pp0135-0146.

Full text
Abstract:
Bayesian Additive Regression Tree (BART) is a sum-of-trees model used to approximate classification or regression cases. The main idea of this method is to use a prior distribution to keep the tree size small and a likelihood from data to get the posterior. By fixing the tree size as small as possible, the approximation of each tree would have a little effect on the posterior, which is the sum of all output from all the trees used. Bayesian additive regression tree method will be used for predicting the maternity recovery rate of group long-term disability insurance data from the Society of Actuaries (SOA). The decision tree-based models such as Gradient Boosting Machine, Random Forest, Decision Tree, and Bayesian Additive Regression Tree model are compared to find the best model by comparing mean squared error and program runtime. After comparing some models, the Bayesian Additive Regression Tree model gives the best prediction based on smaller root mean squared error values and relatively short runtime.
APA, Harvard, Vancouver, ISO, and other styles
35

Benazzouza, Salma, Mohammed Ridouani, Fatima Salahdine, and Aawatif Hayar. "Chaotic Compressive Spectrum Sensing Based on Chebyshev Map for Cognitive Radio Networks." Symmetry 13, no. 3 (2021): 429. http://dx.doi.org/10.3390/sym13030429.

Full text
Abstract:
Recently, the chaotic compressive sensing paradigm has been widely used in many areas, due to its ability to reduce data acquisition time with high security. For cognitive radio networks (CRNs), this mechanism aims at detecting the spectrum holes based on few measurements taken from the original sparse signal. To ensure a high performance of the acquisition and recovery process, the choice of a suitable sensing matrix and the appropriate recovery algorithm should be done carefully. In this paper, a new chaotic compressive spectrum sensing (CSS) solution is proposed for cooperative CRNs based on the Chebyshev sensing matrix and the Bayesian recovery via Laplace prior. The chaotic sensing matrix is used first to acquire and compress the high-dimensional signal, which can be an interesting topic to be published in symmetry journal, especially in the data-compression subsection. Moreover, this type of matrix provides reliable and secure spectrum detection as opposed to random sensing matrix, since any small change in the initial parameters generates a different sensing matrix. For the recovery process, unlike the convex and greedy algorithms, Bayesian models are fast, require less measurement, and deal with uncertainty. Numerical simulations prove that the proposed combination is highly efficient, since the Bayesian algorithm with the Chebyshev sensing matrix provides superior performances, with compressive measurements. Technically, this number can be reduced to 20% of the length and still provides a substantial performance.
APA, Harvard, Vancouver, ISO, and other styles
36

Li, Junlin, Wei Zhou, and Cheng Cheng. "Adaptive support-driven Bayesian reweighted algorithm for sparse signal recovery." Signal, Image and Video Processing 15, no. 6 (2021): 1295–302. http://dx.doi.org/10.1007/s11760-021-01860-2.

Full text
APA, Harvard, Vancouver, ISO, and other styles
37

SONG, Jinyang, Feng SHEN, Xiaobo CHEN, and Di ZHAO. "Robust Sparse Signal Recovery in Impulsive Noise Using Bayesian Methods." IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences E101.A, no. 1 (2018): 273–78. http://dx.doi.org/10.1587/transfun.e101.a.273.

Full text
APA, Harvard, Vancouver, ISO, and other styles
38

Dunham, Kylee D., Erik E. Osnas, Charles J. Frost, Julian B. Fischer, and James B. Grand. "Assessing recovery of spectacled eiders using a Bayesian decision analysis." PLOS ONE 16, no. 7 (2021): e0253895. http://dx.doi.org/10.1371/journal.pone.0253895.

Full text
Abstract:
Assessing species status and making classification decisions under the Endangered Species Act is a critical step towards effective species conservation. However, classification decisions are liable to two errors: i) failing to classify a species as threatened or endangered that should be classified (underprotection), or ii) classifying a species as threatened or endangered when it is not warranted (overprotection). Recent surveys indicate threatened spectacled eider populations are increasing in western Alaska, prompting the U.S. Fish and Wildlife Service to reconsider the federal listing status. There are multiple criteria set for assessing spectacled eider status, and here we focus on the abundance and decision analysis criteria. We estimated population metrics using state-space models for Alaskan breeding populations of spectacled eiders. We projected abundance over 50 years using posterior estimates of abundance and process variation to estimate the probability of quasi-extinction. The decision analysis maps the risk of quasi-extinction to the loss associated with making a misclassification error (i.e., underprotection) through a loss function. Our results indicate that the Yukon Kuskokwim Delta breeding population in western Alaska has met the recovery criteria but the Arctic Coastal Plain population in northern Alaska has not. The methods employed here provide an example of accounting for uncertainty and incorporating value judgements in such a way that the decision-makers may understand the risk of committing a misclassification error. Incorporating the abundance threshold and decision analysis in the reclassification criteria greatly increases the transparency and defensibility of the classification decision, a critical aspect for making effective decisions about species management and conservation.
APA, Harvard, Vancouver, ISO, and other styles
39

Jiao, Libin, Hao Wu, Haodi Wang, and Rongfang Bie. "Text Recovery via Deep CNN-BiLSTM Recognition and Bayesian Inference." IEEE Access 6 (2018): 76416–28. http://dx.doi.org/10.1109/access.2018.2882592.

Full text
APA, Harvard, Vancouver, ISO, and other styles
40

Knapik, B. T., A. W. van der Vaart, and J. H. van Zanten. "Bayesian Recovery of the Initial Condition for the Heat Equation." Communications in Statistics - Theory and Methods 42, no. 7 (2013): 1294–313. http://dx.doi.org/10.1080/03610926.2012.681417.

Full text
APA, Harvard, Vancouver, ISO, and other styles
41

Qian, W., and D. M. Titterington. "Bayesian image restoration: an application to edge-preserving surface recovery." IEEE Transactions on Pattern Analysis and Machine Intelligence 15, no. 7 (1993): 748–52. http://dx.doi.org/10.1109/34.221174.

Full text
APA, Harvard, Vancouver, ISO, and other styles
42

Cevri, M., and D. Üstündağ. "Bayesian recovery of sinusoids from noisy data with parallel tempering." IET Signal Processing 6, no. 7 (2012): 673. http://dx.doi.org/10.1049/iet-spr.2011.0335.

Full text
APA, Harvard, Vancouver, ISO, and other styles
43

Ali, Anum, Mudassir Masood, Muhammad S. Sohail, Samir N. Al-Ghadhban, and Tareq Y. Al-Naffouri. "Narrowband Interference Mitigation in SC-FDMA Using Bayesian Sparse Recovery." IEEE Transactions on Signal Processing 64, no. 24 (2016): 6471–84. http://dx.doi.org/10.1109/tsp.2016.2614484.

Full text
APA, Harvard, Vancouver, ISO, and other styles
44

Ortega-Argueta, Alejandro. "Improving recovery planning for threatened species through Bayesian belief networks." Biological Conservation 241 (January 2020): 108320. http://dx.doi.org/10.1016/j.biocon.2019.108320.

Full text
APA, Harvard, Vancouver, ISO, and other styles
45

Khanna, Saurabh, and Chandra R. Murthy. "Decentralized Joint-Sparse Signal Recovery: A Sparse Bayesian Learning Approach." IEEE Transactions on Signal and Information Processing over Networks 3, no. 1 (2017): 29–45. http://dx.doi.org/10.1109/tsipn.2016.2612120.

Full text
APA, Harvard, Vancouver, ISO, and other styles
46

Parlikad, Ajith Kumar, and Duncan McFarlane. "Value of information in product recovery decisions: a Bayesian approach." International Journal of Sustainable Engineering 3, no. 2 (2010): 106–20. http://dx.doi.org/10.1080/19397030903499810.

Full text
APA, Harvard, Vancouver, ISO, and other styles
47

Wang, Dan, and Zhuhong Zhang. "Variational Bayesian inference based robust multiple measurement sparse signal recovery." Digital Signal Processing 89 (June 2019): 131–44. http://dx.doi.org/10.1016/j.dsp.2019.03.013.

Full text
APA, Harvard, Vancouver, ISO, and other styles
48

Widarsson, Björn, and Erik Dotzauer. "Bayesian network-based early-warning for leakage in recovery boilers." Applied Thermal Engineering 28, no. 7 (2008): 754–60. http://dx.doi.org/10.1016/j.applthermaleng.2007.06.016.

Full text
APA, Harvard, Vancouver, ISO, and other styles
49

Liu, Kun, Tong Wang, and Weijun Huang. "An Efficient Sparse Recovery STAP Algorithm for Airborne Bistatic Radars Based on Atomic Selection under the Bayesian Framework." Remote Sensing 16, no. 14 (2024): 2534. http://dx.doi.org/10.3390/rs16142534.

Full text
Abstract:
The traditional sparse recovery (SR) space-time adaptive processing (STAP) algorithms are greatly affected by grid mismatch, leading to poor performance in airborne bistatic radar clutter suppression. In order to address this issue, this paper proposes an SR STAP algorithm for airborne bistatic radars based on atomic selection under the Bayesian framework. This method adopts the idea of atomic selection for the process of Bayesian inference, continuously evaluating the contribution of atoms to the likelihood function to add or remove atoms, and then using the selected atoms to estimate the clutter support subspace and perform sparse recovery in the clutter support subspace. Due to the inherent sparsity of clutter signals, performing sparse recovery in the clutter support subspace avoids using a massive number of atoms from an overcomplete space-time dictionary, thereby greatly improving computational efficiency. In airborne bistatic radar scenarios where significant grid mismatch exists, this method can mitigate the performance degradation caused by grid mismatch by encrypting grid points. Since the sparse recovery is performed in the clutter support subspace, encrypting grid points does not lead to excessive computational burden. Additionally, this method integrates out the noise term under a new hierarchical Bayesian model, preventing the adverse effects caused by inaccurate noise power estimation during iterations in the traditional SR STAP algorithms, further enhancing its performance. Our simulation results demonstrate the high efficiency and superior clutter suppression performance and target detection performance of this method.
APA, Harvard, Vancouver, ISO, and other styles
50

Bonkhoff, Anna K., Tom Hope, Danilo Bzdok, et al. "Recovery after stroke: the severely impaired are a distinct group." Journal of Neurology, Neurosurgery & Psychiatry 93, no. 4 (2021): 369–78. http://dx.doi.org/10.1136/jnnp-2021-327211.

Full text
Abstract:
IntroductionStroke causes different levels of impairment and the degree of recovery varies greatly between patients. The majority of recovery studies are biased towards patients with mild-to-moderate impairments, challenging a unified recovery process framework. Our aim was to develop a statistical framework to analyse recovery patterns in patients with severe and non-severe initial impairment and concurrently investigate whether they recovered differently.MethodsWe designed a Bayesian hierarchical model to estimate 3–6 months upper limb Fugl-Meyer (FM) scores after stroke. When focusing on the explanation of recovery patterns, we addressed confounds affecting previous recovery studies and considered patients with FM-initial scores &lt;45 only. We systematically explored different FM-breakpoints between severe/non-severe patients (FM-initial=5–30). In model comparisons, we evaluated whether impairment-level-specific recovery patterns indeed existed. Finally, we estimated the out-of-sample prediction performance for patients across the entire initial impairment range.ResultsRecovery data was assembled from eight patient cohorts (n=489). Data were best modelled by incorporating two subgroups (breakpoint: FM-initial=10). Both subgroups recovered a comparable constant amount, but with different proportional components: severely affected patients recovered more the smaller their impairment, while non-severely affected patients recovered more the larger their initial impairment. Prediction of 3–6 months outcomes could be done with an R2=63.5% (95% CI=51.4% to 75.5%).ConclusionsOur work highlights the benefit of simultaneously modelling recovery of severely-to-non-severely impaired patients and demonstrates both shared and distinct recovery patterns. Our findings provide evidence that the severe/non-severe subdivision in recovery modelling is not an artefact of previous confounds. The presented out-of-sample prediction performance may serve as benchmark to evaluate promising biomarkers of stroke recovery.
APA, Harvard, Vancouver, ISO, and other styles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!