Showing 2025Show all
3 papers · 1 filter
cs.LG2025
Global Permutation Entropy
Abhijeet Avhale, Joscha Diehl, Niraj Velankar +1
Permutation Entropy, introduced by Bandt and Pompe, is a widely used complexity measure for real-valued time series that is based on the relative order of values within consecutive…
cs.CV2025
Tensor-to-Tensor Models with Fast Iterated Sum Features
Joscha Diehl, Rasheed Ibraheem, Leonard Schmitz +1
Data in the form of images or higher-order tensors is ubiquitous in modern deep learning applications. Owing to their inherent high dimensionality, the need for subquadratic layers…
math.CT2025
Aggregating time-series and image data: functors and double functors
Joscha Diehl
Aggregation of time-series or image data over subsets of the domain is a fundamental task in data science. We show that many known aggregation operations can be interpreted as (dou…