A semi-agnostic ansatz with variable structure for variational quantum algorithms - Bilkis, Matias (Universitat Autònoma de Barcelona. Departament de Física) ; Cerezo, Marco (Los Alamos National Laboratory. Center for Nonlinear Studies) ; Verdon, Guillaume (University of Waterloo. Institute for Quantum Computing) ; Coles, Patrick (Los Alamos National Laboratory. Theoretical Division) ; Cincio, Lukasz (Los Alamos National Laboratory. Theoretical Division)