Inverse problems (Differential equations) 18 Mathematics 15 Mathematical models 6 Calculus 5 Geometry 5 Image processing 5 Numerical analysis 5 Data processing 4 Determinants -- matrices-- Algebra-- Mathematics 4 Numerical solutions 4 Spectral theory (Mathematics) 4 Algebra 3 Differential equations, Partial 3 Linear operators 3 MATHEMATICS / Topology 3 Machine learning 3 Mathematical physics 3 Matrices 3 Statistical methods 3 Wavelets (Mathematics) 3 Algebras, Linear 2 Approximation theory 2 Boundary value problems 2 Computational linguistics 2 Computer animation 2 Computer graphics 2 Computer science 2 Computer vision 2 Decomposition (Mathematics) 2 Differential equations 2