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Found 5 papers, 2 papers with code
Zeroing the Output of a Nonlinear System Without Relative Degree
The goal of this paper is to establish some facts concerning the problem of zeroing the output of an input-output system that does not have relative degree.
Additive Networks of Chen-Fliess Series: Local Convergence and Relative Degree
Given an additive network of input-output systems where each node of the network is modeled by a locally convergent Chen-Fliess series, two basic properties of the network are established.
Generalized iterated-sums signatures
We explore the algebraic properties of a generalized version of the iterated-sums signature, inspired by previous work of F.~Kir\'aly and H.~Oberhauser.
Tropical time series, iterated-sums signatures and quasisymmetric functions
Aiming for a systematic feature-extraction from time series, we introduce the iterated-sums signature over arbitrary commutative semirings.
Time-warping invariants of multidimensional time series
We show that these correspond to a certain family of iterated sums of the increments of the time series, known as quasisymmetric functions in the mathematics literature.
