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Relevant bibliographies by topics / Uncertain imputation

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Academic literature on the topic 'Uncertain imputation'

Author: Grafiati

Published: 30 November 2024

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Journal articles on the topic "Uncertain imputation"

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G.V., Suresh, and Srinivasa Reddy E.V. "Uncertain Data Analysis with Regularized XGBoost." Webology 19, no. 1 (2022): 3722–40. http://dx.doi.org/10.14704/web/v19i1/web19245.

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Uncertainty is a ubiquitous element in available knowledge about the real world. Data sampling error, obsolete sources, network latency, and transmission error are all factors that contribute to the uncertainty. These kinds of uncertainty have to be handled cautiously, or else the classification results could be unreliable or even erroneous. There are numerous methodologies developed to comprehend and control uncertainty in data. There are many faces for uncertainty i.e., inconsistency, imprecision, ambiguity, incompleteness, vagueness, unpredictability, noise, and unreliability. Missing infor

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Wang, Jianwei, Ying Zhang, Kai Wang, Xuemin Lin, and Wenjie Zhang. "Missing Data Imputation with Uncertainty-Driven Network." Proceedings of the ACM on Management of Data 2, no. 3 (2024): 1–25. http://dx.doi.org/10.1145/3654920.

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We study the problem of missing data imputation, which is a fundamental task in the area of data quality that aims to impute the missing data to achieve the completeness of datasets. Though the recent distribution-modeling-based techniques (e.g., distribution generation and distribution matching) can achieve state-of-the-art performance in terms of imputation accuracy, we notice that (1) they deploy a sophisticated deep learning model that tends to be overfitting for missing data imputation; (2) they directly rely on a global data distribution while overlooking the local information. Driven by

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Elimam, Rayane, Nicolas Sutton-Charani, Stéphane Perrey, and Jacky Montmain. "Uncertain imputation for time-series forecasting: Application to COVID-19 daily mortality prediction." PLOS Digital Health 1, no. 10 (2022): e0000115. http://dx.doi.org/10.1371/journal.pdig.0000115.

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The object of this study is to put forward uncertainty modeling associated with missing time series data imputation in a predictive context. We propose three imputation methods associated with uncertainty modeling. These methods are evaluated on a COVID-19 dataset out of which some values have been randomly removed. The dataset contains the numbers of daily COVID-19 confirmed diagnoses (“new cases”) and daily deaths (“new deaths”) recorded since the start of the pandemic up to July 2021. The considered task is to predict the number of new deaths 7 days in advance. The more values are missing,

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Liang, Pei, Junhua Hu, Yongmei Liu, and Xiaohong Chen. "Public resources allocation using an uncertain cooperative game among vulnerable groups." Kybernetes 48, no. 8 (2019): 1606–25. http://dx.doi.org/10.1108/k-03-2018-0146.

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Purpose This paper aims to solve the problem of public resource allocation among vulnerable groups by proposing a new method called uncertain α-coordination value based on uncertain cooperative game. Design/methodology/approach First, explicit forms of uncertain Shapley value with Chouqet integral form and uncertain centre-of-gravity of imputation-set (CIS) value are defined separately on the basis of uncertainty theory and cooperative game. Then, a convex combination of the two values above called the uncertain α-coordination value is used as the best solution. This study proves that the prop

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Bleidorn, Michel Trarbach, Wanderson de Paula Pinto, Isamara Maria Schmidt, Antonio Sergio Ferreira Mendonça, and José Antonio Tosta dos Reis. "Methodological approaches for imputing missing data into monthly flows series." Ambiente e Agua - An Interdisciplinary Journal of Applied Science 17, no. 2 (2022): 1–27. http://dx.doi.org/10.4136/ambi-agua.2795.

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Missing data is one of the main difficulties in working with fluviometric records. Database gaps may result from fluviometric stations components problems, monitoring interruptions and lack of observers. Incomplete series analysis generates uncertain results, negatively impacting water resources management. Thus, proper missing data consideration is very important to ensure better information quality. This work aims to analyze, comparatively, missing data imputation methodologies in monthly river-flow time series, considering, as a case study, the Doce River, located in Southeast Brazil. Missi

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Gromova, Ekaterina, Anastasiya Malakhova, and Arsen Palestini. "Payoff Distribution in a Multi-Company Extraction Game with Uncertain Duration." Mathematics 6, no. 9 (2018): 165. http://dx.doi.org/10.3390/math6090165.

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A nonrenewable resource extraction game model is analyzed in a differential game theory framework with random duration. If the cumulative distribution function (c.d.f.) of the final time is discontinuous, the related subgames are differentiated based on the position of the initial instant with respect to the jump. We investigate properties of optimal trajectories and of imputation distribution procedures if the game is played cooperatively.

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Lee, Jung Yeon, Myeong-Kyu Kim, and Wonkuk Kim. "Robust Linear Trend Test for Low-Coverage Next-Generation Sequence Data Controlling for Covariates." Mathematics 8, no. 2 (2020): 217. http://dx.doi.org/10.3390/math8020217.

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Low-coverage next-generation sequencing experiments assisted by statistical methods are popular in a genetic association study. Next-generation sequencing experiments produce genotype data that include allele read counts and read depths. For low sequencing depths, the genotypes tend to be highly uncertain; therefore, the uncertain genotypes are usually removed or imputed before performing a statistical analysis. It may result in the inflated type I error rate and in a loss of statistical power. In this paper, we propose a mixture-based penalized score association test adjusting for non-genetic

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Griffin, James M., Jino Mathew, Antal Gasparics, et al. "Machine-Learning Approach to Determine Surface Quality on a Reactor Pressure Vessel (RPV) Steel." Applied Sciences 12, no. 8 (2022): 3721. http://dx.doi.org/10.3390/app12083721.

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Surface quality measures such as roughness, and especially its uncertain character, affect most magnetic non-destructive testing methods and limits their performance in terms of an achievable signal-to-noise ratio and reliability. This paper is primarily focused on an experimental study targeting nuclear reactor materials manufactured from the milling process with various machining parameters to produce varying surface quality conditions to mimic the varying material surface qualities of in-field conditions. From energising a local area electromagnetically, a receiver coil is used to obtain th

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FLÅM, S. D., and Y. M. ERMOLIEV. "Investment, uncertainty, and production games." Environment and Development Economics 14, no. 1 (2009): 51–66. http://dx.doi.org/10.1017/s1355770x08004579.

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ABSTRACTThis paper explores a few cooperative aspects of investments in uncertain, real options. By hypothesis some production commitments, factors, or quotas are transferable. Cases in point include energy supply, emission of pollutants, and harvest of renewable resources. Of particular interest are technologies or projects that provide anti-correlated returns. Any such project stabilizes the aggregate proceeds. Therefore, given widespread risk aversion, a project of this sort merits a bonus. The setting is formalized as a two-stage, stochastic, production game. Absent economies of scale, suc

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Le, H., S. Batterman, K. Dombrowski, et al. "A Comparison of Multiple Imputation and Optimal Estimation for Missing and Uncertain Urban Air Toxics Data." Epidemiology 17, Suppl (2006): S242. http://dx.doi.org/10.1097/00001648-200611001-00624.

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Dissertations / Theses on the topic "Uncertain imputation"

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Elimam, Rayane. "Apprentissage automatique pour la prédiction de performances : du sport à la santé." Electronic Thesis or Diss., IMT Mines Alès, 2024. https://theses.hal.science/tel-04805708.

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De nombreux indicateurs de performance existent en sport et en santé (guérison, réhabilitation, etc.) qui permettent de caractériser différents critères sportifs et thérapeutiques.Ces différents types de performance dépendent généralement de la charge de travail (ou de rééducation) subie par les sportifs ou patients.Ces dernières années, beaucoup d'applications de l'apprentissage automatique au sport et à la santé ont été proposées.La prédiction, voir l'explication de performances à partir de données de charges pourrait permettre d'optimiser les entraînements ou les thérapies.Dans ce contexte

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Bodine, Andrew James. "The Effect of Item Parameter Uncertainty on Test Reliability." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1343316705.

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Huang, Shiping. "Exploratory visualization of data with variable quality." Link to electronic thesis, 2005. http://www.wpi.edu/Pubs/ETD/Available/etd-01115-225546/.

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Books on the topic "Uncertain imputation"

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Analysis of Integrated Data. Taylor & Francis Group, 2019.

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Chambers, Raymond L., and Li-Chun Zhang. Analysis of Integrated Data. Taylor & Francis Group, 2019.

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Chambers, Raymond L., and Lichun Zhang. Analysis of Integrated Data. Taylor & Francis Group, 2021.

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Chambers, Raymond L., and Li-Chun Zhang. Analysis of Integrated Data. Taylor & Francis Group, 2019.

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Book chapters on the topic "Uncertain imputation"

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Little, Roderick J. A., and Donald B. Rubin. "Estimation of Imputation Uncertainty." In Statistical Analysis with Missing Data. John Wiley & Sons, Inc., 2014. http://dx.doi.org/10.1002/9781119013563.ch5.

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Ranvier, Thomas, Haytham Elghazel, Emmanuel Coquery, and Khalid Benabdeslem. "Accounting for Imputation Uncertainty During Neural Network Training." In Big Data Analytics and Knowledge Discovery. Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-39831-5_24.

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Shi, Xingjie, Can Yang, and Jin Liu. "Using Collaborative Mixed Models to Account for Imputation Uncertainty in Transcriptome-Wide Association Studies." In Methods in Molecular Biology. Springer US, 2021. http://dx.doi.org/10.1007/978-1-0716-0947-7_7.

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Erdogan Erten, Gamze, Camilla Zacche da Silva, and Jeff Boisvert. "Decorrelation and Imputation Methods for Multivariate Modeling." In Applied Spatiotemporal Data Analytics and Machine Learning [Working Title]. IntechOpen, 2024. http://dx.doi.org/10.5772/intechopen.115069.

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In most mining projects, multivariate modeling of regionalized variables has a critical impact on the final model due to complex multivariate relationships between correlated variables. In geostatistical modeling, multivariate transformations are commonly employed to model complex data relationships. This decorrelates or makes the variables independent, which enables the generation of independent models for each variable while maintaining the ability to restore multivariate relationships through a back-transformation. There are a myriad of transformation methods, however, this chapter discusses the most applied methods in geostatistical procedures. These include principal component analysis (PCA), minimum/maximum autocorrelation factors (MAF), stepwise conditional transform (SCT), and projection pursuit multivariate transform (PPMT). All these transforms require equally sampled data. In the case of unequal sampling, it is common practice to either exclude the incomplete samples or impute the missing values. Data imputation is recommended in many scientific fields as removing incomplete samples usually removes valuable information from modeling workflows. Three common imputation methods are discussed in this chapter: single imputation (SI), maximum likelihood estimation (MLE), and multiple imputation (MI). Bayesian updating (BU) is also discussed as an adaptation of MI to geostatistical analysis. MI methods are preferred in geostatistical analysis because they reproduce the variability of variables and reflect the uncertainty of missing values.

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Lajeunesse, Marc J. "Recovering Missing or Partial Data from Studies: a Survey of Conversions and Imputations for Meta-analysis." In Handbook of Meta-analysis in Ecology and Evolution. Princeton University Press, 2013. http://dx.doi.org/10.23943/princeton/9780691137285.003.0013.

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This chapter discusses possible solutions for dealing with partial information and missing data from published studies. These solutions can improve the amount of information extracted from individual studies, and increase the representation of data for meta-analysis. It begins with a description of the mechanisms that generate missing information within studies, followed by a discussion of how gaps of information can influence meta-analysis and the way studies are quantitatively reviewed. It then suggests some practical solutions to recovering missing statistics from published studies. These include statistical acrobatics to convert available information (e.g., t-test) into those that are more useful to compute effect sizes, as well as a heuristic approaches that impute (fill gaps) missing information when pooling effect sizes. Finally, the chapter discusses multiple-imputation methods that account for the uncertainty associated with filling gaps of information when performing meta-analysis.

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Conference papers on the topic "Uncertain imputation"

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Mai, Lihao, Haoran Li, and Yang Weng. "Data Imputation with Uncertainty Using Stochastic Physics-Informed Learning." In 2024 IEEE Power & Energy Society General Meeting (PESGM). IEEE, 2024. http://dx.doi.org/10.1109/pesgm51994.2024.10688419.

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Zhang, Shunyang, Senzhang Wang, Xianzhen Tan, et al. "SaSDim:Self-Adaptive Noise Scaling Diffusion Model for Spatial Time Series Imputation." In Thirty-Third International Joint Conference on Artificial Intelligence {IJCAI-24}. International Joint Conferences on Artificial Intelligence Organization, 2024. http://dx.doi.org/10.24963/ijcai.2024/283.

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Spatial time series imputation is of great importance to various real-world applications. As the state-of-the-art generative models, diffusion models (e.g. CSDI) have outperformed statistical and autoregressive based models in time series imputation. However, diffusion models may introduce unstable noise owing to the inherent uncertainty in sampling, leading to the generated noise deviating from the intended Gaussian distribution. Consequently, the imputed data may deviate from the real data. To this end, we propose a Self-adaptive noise Scaling Diffusion Model named SaSDim for spatial time se

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Azarkhail, M., and P. Woytowitz. "Uncertainty management in model-based imputation for missing data." In 2013 Annual Reliability and Maintainability Symposium (RAMS). IEEE, 2013. http://dx.doi.org/10.1109/rams.2013.6517697.

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Zhao, Qilong, Yifei Zhang, Mengdan Zhu, et al. "DUE: Dynamic Uncertainty-Aware Explanation Supervision via 3D Imputation." In KDD '24: The 30th ACM SIGKDD Conference on Knowledge Discovery and Data Mining. ACM, 2024. http://dx.doi.org/10.1145/3637528.3671641.

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Jun, Eunji, Ahmad Wisnu Mulyadi, and Heung-Il Suk. "Stochastic Imputation and Uncertainty-Aware Attention to EHR for Mortality Prediction." In 2019 International Joint Conference on Neural Networks (IJCNN). IEEE, 2019. http://dx.doi.org/10.1109/ijcnn.2019.8852132.

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Saeidi, Rahim, and Paavo Alku. "Accounting for uncertainty of i-vectors in speaker recognition using uncertainty propagation and modified imputation." In Interspeech 2015. ISCA, 2015. http://dx.doi.org/10.21437/interspeech.2015-703.

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Hwang, Sunghyun, and Dong-Kyu Chae. "An Uncertainty-Aware Imputation Framework for Alleviating the Sparsity Problem in Collaborative Filtering." In CIKM '22: The 31st ACM International Conference on Information and Knowledge Management. ACM, 2022. http://dx.doi.org/10.1145/3511808.3557236.

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Andrews, Mark, Gavin Jones, Brian Leyde, Lie Xiong, Max Xu, and Peter Chien. "A Statistical Imputation Method for Handling Missing Values in Generalized Polynomial Chaos Expansions." In ASME Turbo Expo 2019: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/gt2019-91035.

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Abstract Generalized Polynomial Chaos Expansion (gPCE) is widely used in uncertainty quantification and sensitivity analysis for applications in the aerospace industry. gPCE uses the spectrum projection to fit a polynomial model, the gPCE model, to a sparse grid Design of Experiments (DOEs). The gPCE model can be used to make predictions, analytically determine uncertainties, and calculate sensitivity indices. However, the model’s accuracy is very dependent on having complete DOEs. When a sampling point is missing from the sparse grid DOE, this severely impacts the accuracy of the gPCE analysi

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Moreira, Rafael Peralta, Thiago da Silva Piedade, and Marcelo Victor Tomaz De Matos. "Credibility Assessment of Annular Casing Cement for P&A Campaigns: A Case Study in Campos Basin Offshore Brazil." In Offshore Technology Conference. OTC, 2023. http://dx.doi.org/10.4043/32625-ms.

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Abstract The assessment of annulus cement barriers is critical in well Plug and Abandonment (P&A) planning and execution. For wells with 10 to 30+ producing years, the data from well construction may be unavailable, incomplete, or not fully compliant with current industry good cementing practices. This case study presents a methodology for assessing qualification and credibility of annular hydraulic isolation, highlighting the challenges involved in the process. The engineering workflow starts by data mining from well construction regarding casing and cementing operations, drilling fluids,

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Wang, Zepu, Dingyi Zhuang, Yankai Li, et al. "ST-GIN: An Uncertainty Quantification Approach in Traffic Data Imputation with Spatio-Temporal Graph Attention and Bidirectional Recurrent United Neural Networks." In 2023 IEEE 26th International Conference on Intelligent Transportation Systems (ITSC). IEEE, 2023. http://dx.doi.org/10.1109/itsc57777.2023.10422526.

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