I. C. Demetriou

Available identifiers

zbMath Open demetriou.ioannis-cMaRDI QIDQ168320

List of research outcomes

Publication	Date of Publication	Type
https://portal.mardi4nfdi.de/entity/Q6162261	2023-06-15	Paper
Convex-concave fitting to successively updated data and its application to Covid-19 analysis	2022-10-31	Paper
A binary search algorithm for univariate data approximation and estimation of extrema by piecewise monotonic constraints	2022-04-11	Paper
Separation theorems for the extrema of best piecewise monotonic approximations to successive data	2020-06-16	Paper
A decomposition theorem for the least squares piecewise monotonic data approximation problem	2019-11-20	Paper
An example of nondecomposition in data fitting by piecewise monotonic divided differences of order higher than two	2019-09-09	Paper
Sigmoid Data Fitting by Least Squares Adjustment of Second and Third Divided Differences	2018-12-20	Paper
A Characterization Theorem for the Best L 1 Piecewise Monotonic Data Approximation Problem	2017-09-25	Paper
On the Sensitivity of Least Squares Data Fitting by Nonnegative Second Divided Differences	2017-06-23	Paper
On Distributed-Lag Modeling Algorithms by r-Convexity and Piecewise Monotonicity	2015-10-05	Paper
A linearly distributed lag estimator with \(r\)-convex coefficients	2014-04-14	Paper
https://portal.mardi4nfdi.de/entity/Q2895120	2012-07-02	Paper
https://portal.mardi4nfdi.de/entity/Q3107474	2011-12-24	Paper
https://portal.mardi4nfdi.de/entity/Q3107477	2011-12-24	Paper
https://portal.mardi4nfdi.de/entity/Q3107523	2011-12-24	Paper
https://portal.mardi4nfdi.de/entity/Q3084844	2011-03-25	Paper
An adaptive algorithm for least squares piecewise monotonic data fitting	2008-11-26	Paper
https://portal.mardi4nfdi.de/entity/Q3528940	2008-10-17	Paper
https://portal.mardi4nfdi.de/entity/Q5472848	2006-06-14	Paper
https://portal.mardi4nfdi.de/entity/Q4660200	2005-03-21	Paper
https://portal.mardi4nfdi.de/entity/Q3158029	2005-01-20	Paper
Least squares convex-concave data smoothing	2005-01-17	Paper
A theorem for piecewise convex-concave data approximation.	2004-03-15	Paper
https://portal.mardi4nfdi.de/entity/Q4421357	2004-03-08	Paper
Adaptive Preconditioned Variational Methods For Solving Self-Adjoint Partial Differential Equations	2004-02-25	Paper
https://portal.mardi4nfdi.de/entity/Q4427771	2003-09-22	Paper
Signs of divided differences yield least squares data fitting with constrained monotonicity or convexity	2003-02-23	Paper
Certain positive definite submatrices that arise from binomial coefficient matrices	2001-07-04	Paper
https://portal.mardi4nfdi.de/entity/Q4945655	2000-09-26	Paper
CXFTV2: A Fortran subroutine for the discrete least squares convex approximation	1999-12-14	Paper
https://portal.mardi4nfdi.de/entity/Q4357033	1998-03-05	Paper
Algorithm 742: L2CXFT	1998-01-26	Paper
Best L1 piecewise monotonic data modelling	1996-12-15	Paper
https://portal.mardi4nfdi.de/entity/Q4318729	1995-06-18	Paper
https://portal.mardi4nfdi.de/entity/Q4318730	1995-06-18	Paper
Discrete Piecewise Monotonic Approximation by a Strictly Convex Distance Function	1995-04-03	Paper
https://portal.mardi4nfdi.de/entity/Q4288339	1994-05-29	Paper
https://portal.mardi4nfdi.de/entity/Q4288315	1994-04-19	Paper
https://portal.mardi4nfdi.de/entity/Q4035280	1993-05-18	Paper
Least Squares Smoothing of Univariate Data to achieve Piecewise Monotonicity	1991-01-01	Paper
The Minimum Sum of Squares Change to Univariate Data that gives Convexity	1991-01-01	Paper
A Characterization Theorem for the Discrete Best Monotonic Approximation Problem	1990-01-01	Paper
https://portal.mardi4nfdi.de/entity/Q3750030	1987-01-01	Paper
The preconditioned variational methods for solving large linear systems	1985-01-01	Paper

Research outcomes over time

Doctoral students

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Known relations from the MaRDI Knowledge Graph

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