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DATA BASED QUANTIFICATION OF SYNCHRONIZATION

期刊: FOUNDATIONS OF DATA SCIENCE, 2023; 5 (1)

Several types of synchronization have been described theoretically and observed experimentally. However, the boundaries between the synchronization st......

WEIGHT SET DECOMPOSITION FOR WEIGHTED RANK AND RATING AGGREGATION: AN INTERPRETABLE AND VISUAL DECISION SUPPORT TOOL

期刊: FOUNDATIONS OF DATA SCIENCE, 2023; 5 (3)

The problem of interpreting or aggregating multiple rankings is common to many real-world applications. Perhaps the simplest and most common approach ......

PERSISTENT HYPERDIGRAPH HOMOLOGY AND PERSISTENT HYPERDIGRAPH LAPLACIANS

期刊: FOUNDATIONS OF DATA SCIENCE, 2023; ()

Hypergraphs are useful mathematical models for describing complex relationships among members of a structured graph, while hyperdigraphs serve as a ge......

EXTREMAL EVENT GRAPHS: A (STABLE) TOOL FOR ANALYZING NOISY TIME SERIES DATA

期刊: FOUNDATIONS OF DATA SCIENCE, 2023; 5 (1)

Local maxima and minima, or extremal events, in experimental time series can be used as a coarse summary to characterize data. However, the discrete s......

NOISE CALIBRATION FOR SPDES: A CASE STUDY FOR THE ROTATING SHALLOW WATER MODEL

期刊: FOUNDATIONS OF DATA SCIENCE, 2023; ()

Stochastic partial differential equations have been used in a variety of contexts to model the evolution of uncertain dynamical systems. In recent yea......

NORMALIZATION EFFECTS ON DEEP NEURAL NETWORKS

期刊: FOUNDATIONS OF DATA SCIENCE, 2023; 5 (3)

We study the effect of normalization on the layers of deep neural networks of feed-forward type. A given layer i with Ni hidden units is allowed to be......

AN OVERVIEW OF DIFFERENTIABLE PARTICLE FILTERS FOR DATA-ADAPTIVE SEQUENTIAL BAYESIAN INFERENCE

期刊: FOUNDATIONS OF DATA SCIENCE, 2023; ()

By approximating posterior distributions with weighted samples, particle filters (PFs) provide an efficient mechanism for solving non-linear sequentia......

UNSUPERVISED LEARNING OF OBSERVATION FUNCTIONS IN STATE SPACE MODELS BY NONPARAMETRIC MOMENT METHODS

期刊: FOUNDATIONS OF DATA SCIENCE, 2023; 5 (3)

We investigate the unsupervised learning of non-invertible observation functions in nonlinear state space models. Assuming abundant data of the observ......

HIERARCHICAL REGULARIZATION NETWORKS FOR SPARSIFICATION BASED LEARNING ON NOISY DATASETS

期刊: FOUNDATIONS OF DATA SCIENCE, 2023; 5 (4)

. We propose a hierarchical learning strategy aimed at generating sparse representations and associated models for noisy datasets. The hierarchy follo......

DYNAMIC TOPOLOGICAL DATA ANALYSIS OF FUNCTIONAL HUMAN BRAIN NETWORKS

期刊: FOUNDATIONS OF DATA SCIENCE, 2023; ()

Developing reliable methods to discriminate different transient brain states that change over time is a key neuroscientific challenge in brain imaging......

HIERARCHICAL ENSEMBLE KALMAN METHODS WITH SPARSITY-PROMOTING GENERALIZED GAMMA HYPERPRIORS

期刊: FOUNDATIONS OF DATA SCIENCE, 2023; 5 (3)

This paper introduces a computational framework to incorporate flexible regularization techniques in ensemble Kalman methods, generalizing the iterati......

FAST COMPUTATION OF PERSISTENT HOMOLOGY REPRESENTATIVES WITH INVOLUTED PERSISTENT HOMOLOGY

期刊: FOUNDATIONS OF DATA SCIENCE, 2023; 5 (4)

Persistent homology is typically computed through persistent co homology. While this generally improves the running time significantly, it does not fa......

IDENTIFIABILITY OF INTERACTION KERNELS IN MEAN-FIELD EQUATIONS OF INTERACTING PARTICLES

期刊: FOUNDATIONS OF DATA SCIENCE, 2023; 5 (4)

. This study examines the identifiability of interaction kernels in mean-field equations of interacting particles or agents, an area of growing intere......

STATISTICAL INFERENCE FOR PERSISTENT HOMOLOGY APPLIED TO SIMULATED FMRI TIME SERIES DATA

期刊: FOUNDATIONS OF DATA SCIENCE, 2023; 5 (1)

Time-series data are amongst the most widely-used in biomedi-cal sciences, including domains such as functional Magnetic Resonance Imag-ing (fMRI). St......

MACHINE LEARNING-BASED CONDITIONAL MEAN FILTER: A GENERALIZATION OF THE ENSEMBLE KALMAN FILTER FOR NONLINEAR DATA ASSIMILATION

期刊: FOUNDATIONS OF DATA SCIENCE, 2023; 5 (1)

This paper presents the machine learning-based ensemble condi-tional mean filter (ML-EnCMF) - a filtering method based on the conditional mean filter ......

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