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- research-articleAugust 2023
Unbiased Locally Private Estimator for Polynomials of Laplacian Variables
KDD '23: Proceedings of the 29th ACM SIGKDD Conference on Knowledge Discovery and Data MiningPages 741–751https://doi.org/10.1145/3580305.3599537This work presents a mechanism to debias polynomial functions computed from locally differentially private data. Local differential privacy is a widely used privacy notion where users add Laplacian noise to their information before submitting it to a ...
- research-articleJuly 2023
Denoising-Aware Adaptive Sampling for Monte Carlo Ray Tracing
SIGGRAPH '23: ACM SIGGRAPH 2023 Conference ProceedingsArticle No.: 32, Pages 1–11https://doi.org/10.1145/3588432.3591537Monte Carlo rendering is a computationally intensive task, but combined with recent deep-learning based advances in image denoising it is possible to achieve high quality images in a shorter amount of time. We present a novel adaptive sampling technique ...
- research-articleMay 2023
Self-Supervised Monocular Depth Estimation by Digging into Uncertainty Quantification
Journal of Computer Science and Technology (JCST), Volume 38, Issue 3Pages 510–525https://doi.org/10.1007/s11390-023-3088-yAbstractBased on well-designed network architectures and objective functions, self-supervised monocular depth estimation has made great progress. However, lacking a specific mechanism to make the network learn more about the regions containing moving ...
- research-articleMarch 2024
A unified theory of diversity in ensemble learning
The Journal of Machine Learning Research (JMLR), Volume 24, Issue 1Article No.: 359, Pages 17302–17350We present a theory of ensemble diversity, explaining the nature of diversity for a wide range of supervised learning scenarios. This challenge has been referred to as the "holy grail" of ensemble learning, an open research issue for over 30 years. Our ...
- research-articleMarch 2023
Determining the Failure Probability Gradient of the Rank-Structure System by the Fast Simulation Method
Cybernetics and Systems Analysis (KLU-CASA), Volume 59, Issue 1Pages 71–81https://doi.org/10.1007/s10559-023-00543-9AbstractA model of a redundant repairable system of the rank structure is considered. Its time operation is determined by distributions of general form. In order to evaluate the gradient of the probability of system failure in a given time interval, the ...
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- research-articleJanuary 2023
Benchmark datasets and real-time autoimmune disease dataset analysis using machine learning algorithms with implementation, analysis and results
Journal of Intelligent & Fuzzy Systems: Applications in Engineering and Technology (JIFS), Volume 45, Issue 2Pages 2449–2463https://doi.org/10.3233/JIFS-224115A machine learning model intends to produce a secure model with low bias and variance. Finding the optimal machine learning model for a dataset is a challenging task. A suitable machine learning model is yet to be specified for the Arthritis Profile Data ...
- research-articleJanuary 2023
Correlation coefficient for Neutrosophic Z-Numbers and its applications in decision making
Journal of Intelligent & Fuzzy Systems: Applications in Engineering and Technology (JIFS), Volume 45, Issue 1Pages 215–228https://doi.org/10.3233/JIFS-222625The correlation coefficient (CC) is a well-known functional information measures used to measure the interrelationship between uncertain, fuzzy sets. The use of neutrosophic sets (NS) in decision making has been increasing in recent times. Many studies ...
- research-articleSeptember 2022
Comparative Analysis of Two Modified Fast Simulation Methods for Evaluation of the Failure Probability of a Rank Structure System
Cybernetics and Systems Analysis (KLU-CASA), Volume 58, Issue 5Pages 691–701https://doi.org/10.1007/s10559-022-00502-wAbstractThe model of a redundant repairable system of the rank structure is considered. Its time operation in terms of reliability is determined by general distributions. Two modified fast simulation methods for the evaluation of the system failure ...
- research-articleFebruary 2022
Geometrical Bounds for Variance and Recentered Moments
Mathematics of Operations Research (MOOR), Volume 47, Issue 1Pages 286–296https://doi.org/10.1287/moor.2021.1125We bound the variance and other moments of a random vector based on the range of its realizations, thus generalizing inequalities of Popoviciu and of Bhatia and Davis concerning measures on the line to several dimensions. This is done using convex duality ...
- research-articleJanuary 2022
Supervised dimensionality reduction and visualization using centroid-encoder
The Journal of Machine Learning Research (JMLR), Volume 23, Issue 1Article No.: 20, Pages 901–934We propose a new tool for visualizing complex, and potentially large and high-dimensional, data sets called Centroid-Encoder (CE). The architecture of the Centroid-Encoder is similar to the autoencoder neural network but it has a modified target, i.e., ...
- research-articleDecember 2021
On the Statistical Analysis of the Harmonic Signal Autocorrelation Function
International Journal of Applied Mathematics and Computer Science (IJAMCS), Volume 31, Issue 4Pages 729–744https://doi.org/10.34768/amcs-2021-0050AbstractThe article presents new tools for investigating the statistical properties of the harmonic signal autocorrelation function (ACF). These tools enable identification of the ACF estimator errors in measurements in which the triggering of the ...
- research-articleJune 2022
DEVIATE: a <u>de</u>ep learning <u>v</u>ar<u>ia</u>nce <u>te</u>sting framework
ASE '21: Proceedings of the 36th IEEE/ACM International Conference on Automated Software EngineeringPages 1286–1290https://doi.org/10.1109/ASE51524.2021.9678540Deep learning (DL) training is nondeterministic and such nondeterminism was shown to cause significant variance of model accuracy (up to 10.8%). Such variance may affect the validity of the comparison of newly proposed DL techniques with baselines. To ...
Study of the subtyping machine of nominal subtyping with variance
Proceedings of the ACM on Programming Languages (PACMPL), Volume 5, Issue OOPSLAArticle No.: 137, Pages 1–27https://doi.org/10.1145/3485514This is a study of the computing power of the subtyping machine behind Kennedy and Pierce's nominal subtyping with variance. We depict the lattice of fragments of Kennedy and Pierce's type system and characterize their computing power in terms of regular,...
- research-articleMarch 2021
Socio-Technical Affordances for Large-Scale Collaborations: Introduction to a Virtual Special Issue
Organization Science (INFORMS-ORGS), Volume 32, Issue 5Pages 1371–1390https://doi.org/10.1287/orsc.2021.1457In this special issue, we review 14 articles published in Organization Science over the past 25 years examining large-scale collaborations (LSCs) tasked with knowledge dissemination and innovation. LSCs involve sizeable pools of participants carrying out ...
- research-articleJanuary 2021
Problems and opportunities in training deep learning software systems: an analysis of variance
- Hung Viet Pham,
- Shangshu Qian,
- Jiannan Wang,
- Thibaud Lutellier,
- Jonathan Rosenthal,
- Lin Tan,
- Yaoliang Yu,
- Nachiappan Nagappan
ASE '20: Proceedings of the 35th IEEE/ACM International Conference on Automated Software EngineeringPages 771–783https://doi.org/10.1145/3324884.3416545Deep learning (DL) training algorithms utilize nondeterminism to improve models' accuracy and training efficiency. Hence, multiple identical training runs (e.g., identical training data, algorithm, and network) produce different models with different ...
- research-articleDecember 2020Best Paper
Electromigration checking using a stochastic effective current model
ICCAD '20: Proceedings of the 39th International Conference on Computer-Aided DesignArticle No.: 5, Pages 1–8https://doi.org/10.1145/3400302.3415635Electromigration (EM) degradation evolves slowly towards failure, over a period of years. This is why EM checking methods use effective current models to represent the underlying circuit workload, which are typically constant (DC) currents over time. ...
- research-articleApril 2020
On the Variance of Single-Run Unbiased Stochastic Derivative Estimators
INFORMS Journal on Computing (INFORMS-IJOC), Volume 32, Issue 2Pages 390–407https://doi.org/10.1287/ijoc.2019.0897We analyze the variance of single-run unbiased stochastic derivative estimators. The distribution of a specific conditional expectation characterizes an intrinsic distributional property of the derivative estimators in a given class, which, in turn, ...
- research-articleSeptember 2019
Variances with Bonferroni means and ordered weighted averages
International Journal of Intelligent Systems (IJIS), Volume 34, Issue 11Pages 3020–3045https://doi.org/10.1002/int.22184AbstractThe variance is a statistical measure frequently used for analysis of dispersion in the data. This paper presents new types of variances that use Bonferroni means and ordered weighted averages in the aggregation process of the variance. The main ...
- research-articleJanuary 2019
Applying refined descriptive sampling on the vibrating string model
International Journal of Computing Science and Mathematics (IJCSM), Volume 10, Issue 3Pages 276–287https://doi.org/10.1504/ijcsm.2019.101097Monte Carlo methods (MC) and refined descriptive sampling (RDS) are sampling methods that can be used to produce input values for estimation of expectation of function of output variables. This paper gives an application of RDS method in a two-dimensional ...
- research-articleJanuary 2019
Passive image autofocus by using direct fuzzy transform
International Journal of Computational Science and Engineering (IJCSE), Volume 20, Issue 2Pages 240–254https://doi.org/10.1504/ijcse.2019.103786We present a new passive autofocusing algorithm based on fuzzy transforms. In a previous work (Roh et al., 2016) a localised variation of the variance operator is proposed based on the concept of fuzzy subspaces of the image: fuzzy C-means and conditional ...