Learning the clustering of longitudinal shape data sets into a mixture of independent or branching trajectories

V Debavelaere, S Durrleman, S Allassonnière… - International Journal of …, 2020 - Springer
Given repeated observations of several subjects over time, ie a longitudinal data set, this
paper introduces a new model to learn a classification of the shapes progression in an …

A hierarchical geodesic model for longitudinal analysis on manifolds

E Nava-Yazdani, HC Hege, C von Tycowicz - Journal of Mathematical …, 2022 - Springer
In many applications, geodesic hierarchical models are adequate for the study of temporal
observations. We employ such a model derived for manifold-valued data to Kendall's shape …

A riemannian framework for longitudinal analysis of resting-state functional connectivity

Q Zhao, D Kwon, KM Pohl - … , Granada, Spain, September 16-20, 2018 …, 2018 - Springer
Even though the number of longitudinal resting-state-fMRI studies is increasing, accurately
characterizing the changes in functional connectivity across visits is a largely unexplored …

[HTML][HTML] De Casteljau's algorithm in geometric data analysis: Theory and application

M Hanik, E Nava-Yazdani, C von Tycowicz - Computer Aided Geometric …, 2024 - Elsevier
For decades, de Casteljau's algorithm has been used as a fundamental building block in
curve and surface design and has found a wide range of applications in fields such as …

Statistics on the space of trajectories for longitudinal data analysis

R Chakraborty, M Banerjee… - 2017 IEEE 14th …, 2017 - ieeexplore.ieee.org
Statistical analysis of longitudinal data is a significant problem in Biomedical imaging
applications. In the recent past, several researchers have developed mathematically …

Bi-invariant dissimilarity measures for sample distributions in Lie groups

M Hanik, HC Hege, C von Tycowicz - SIAM Journal on Mathematics of Data …, 2022 - SIAM
Data sets sampled in Lie groups are widespread, and as with multivariate data, it is
important for many applications to assess the differences between the sets in terms of their …

A geometric framework for statistical analysis of trajectories with distinct temporal spans

R Chakraborty, V Singh, N Adluru… - Proceedings of the …, 2017 - openaccess.thecvf.com
Analyzing data representing multifarious trajectories is central to the many fields in Science
and Engineering; for example, trajectories representing a tennis serve, a gymnast's parallel …

Bi-invariant Two-Sample Tests in Lie Groups for Shape Analysis: Data from the Alzheimer's Disease Neuroimaging Initiative

M Hanik, HC Hege, C Tycowicz - … Workshop on Shape in Medical Imaging, 2020 - Springer
We propose generalizations of the Hotelling's T^ 2 statistic and the Bhattacharayya distance
for data taking values in Lie groups. A key feature of the derived measures is that they are …

Localizing differentially evolving covariance structures via scan statistics

R Mehta, HJ Kim, S Wang, SC Johnson… - Quarterly of applied …, 2018 - pmc.ncbi.nlm.nih.gov
Recent results in coupled or temporal graphical models offer schemes for estimating the
relationship structure between features when the data come from related (but distinct) …

[图书][B] Identifying Feature, Parameter, and Sample Subsets in Machine Learning and Image Analysis

R Mehta - 2023 - search.proquest.com
Modern machine learning has proven to be extremely effective in aiding and automating a
large number of tasks, beginning with simple image recognition, now ranging widely from …