A grammatical inference algorithm is described which computes a context-free grammar interpolating fractal encodings. The “fractality” of the initial curve is captured by Clic symbolic partof t the algorithm while the approximationis performed by the numericalpail. Hybridization of the algorithm consists in exchanging some information between the two parts, i.e. by translating the eigenvalue variations of the growth matrix. into syntactic variations while checking the compatibility with the symbolic system already inferred.