Project Details
Description
This project proposes and justifies a generalization of the Fermat-Weber problem (or simply, the FW problem). The FW problem aims to find a vector that minimizes the sum of weighted distances to other given vectors in a vector space, where the vector to be minimized is represented by a linear transformation. The solution to the FW problem has various applications in engineering, for example, in the design of navigation algorithms and in mobile network connectivity with wireless sensors, among others.
The mathematical models we propose generalize the FW problem in two aspects: 1) They consider nonlinear transformations, unlike the FW problem, which only considers linear transformations. 2) They calculate the optimal transformations (linear or nonlinear) that belong to a set with a predetermined structure, unlike the FW problem, which does not optimize the associated linear transformation. The characteristics mentioned above will allow the numerical error obtained in the proposed models to be lower than the error obtained in the FW problem
Additionally, we will apply the generalization of the FW problem to data processing, particularly in applications in the field of forestry engineering, specifically in the analysis of hyperspectral signatures and tree bark. The proposed generalization of the FW problem will simplify the process of analyzing hyperspectral signatures in wood and leaves between 310 and 1100 nanometers, allowing us to determine the biotypic signature of each species. This would facilitate their identification in the field, either with terrestrial instrumentation or multiband satellite images. Furthermore, it will facilitate the process of identifying tree species bark by generating a biotypic photo of a species, which would simplify the process of identifying and studying tropical species bark
The mathematical models we propose generalize the FW problem in two aspects: 1) They consider nonlinear transformations, unlike the FW problem, which only considers linear transformations. 2) They calculate the optimal transformations (linear or nonlinear) that belong to a set with a predetermined structure, unlike the FW problem, which does not optimize the associated linear transformation. The characteristics mentioned above will allow the numerical error obtained in the proposed models to be lower than the error obtained in the FW problem
Additionally, we will apply the generalization of the FW problem to data processing, particularly in applications in the field of forestry engineering, specifically in the analysis of hyperspectral signatures and tree bark. The proposed generalization of the FW problem will simplify the process of analyzing hyperspectral signatures in wood and leaves between 310 and 1100 nanometers, allowing us to determine the biotypic signature of each species. This would facilitate their identification in the field, either with terrestrial instrumentation or multiband satellite images. Furthermore, it will facilitate the process of identifying tree species bark by generating a biotypic photo of a species, which would simplify the process of identifying and studying tropical species bark
General Objective
Desarrollar un modelo matemático que generalice el problema de Fermat-Weber, el cual mejore la estimación numérica del problema original y sea aplicado en procesamiento de datos.
Research Lines
Escuela de Matemáticas. Matemática aplicada: modelación, simulación, inteligencia artificial, análisis de datos, visualización de información, optimización y aplicaciones a la ingeniería y a las ciencias.
Escuela de Ingeniería Forestal: Manejo sostenible de bosques naturales
Escuela de Ingeniería Forestal: Manejo sostenible de bosques naturales
| Status | Finished |
|---|---|
| Effective start/end date | 1/01/20 → 31/12/21 |
Keywords
- tree bark
- hyperspectral signatures
- biotypic data
- optimizationz
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A fast method to estimate the Moore-Penrose inverse for well-determined numerical rank matrices based on the Tikhonov regularization
Soto-Quiros, P., 2024, In: Journal of Mathematics and Computer Science. 37, 1, p. 59-81 23 p.Research output: Contribution to journal › Article › peer-review
Open Access1 Scopus citations -
A Least-Squares Problem of a Linear Tensor Equation of Third-Order for Audio and Color Image Processing
Soto-Quiros, P., 2022, 2022 45th International Conference on Telecommunications and Signal Processing, TSP 2022. Herencsar, N. (ed.). Institute of Electrical and Electronics Engineers Inc., p. 59-65 7 p. (2022 45th International Conference on Telecommunications and Signal Processing, TSP 2022).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review
6 Scopus citations -
A Regularized Alternating Least-Squares Method for Minimizing a Sum of Squared Euclidean Norms with Rank Constraint
Soto-Quiros, P., 2022, In: Journal of Applied Mathematics. 2022, 4838182.Research output: Contribution to journal › Article › peer-review
Open Access2 Scopus citations