title: Recursive neural networks for processing graphs with labelled edges: theory and applications.
abstract: In this paper, we introduce a new recursive neural network model able to process directed acyclic graphs with labelled edges. The model uses a state transition function which considers the edge labels and is independent both from the number and the order of the children of each node. The computational capabilities of the new recursive architecture are assessed. Moreover, in order to test the proposed architecture on a practical challenging application, the problem of object detection in images is also addressed. In fact, the localization of target objects is a preliminary step in any recognition system. The proposed technique is general and can be applied in different detection systems, since it does not exploit any a priori knowledge on the particular problem. Some experiments on face detection, carried out on scenes acquired by an indoor camera, are reported, showing very promising results.
authors.affiliation: Dipartimento di Ingegneria dell'Informazione Università degli Studi di Siena Via Roma, 56 53100--Siena (Italy). monica@dii.unisi.it
authors.forename: M
authors.initials: M
authors.lastname: Bianchini
authors.forename: M
authors.initials: M
authors.lastname: Maggini
authors.forename: L
authors.initials: L
authors.lastname: Sarti
authors.forename: F
authors.initials: F
authors.lastname: Scarselli
mesh_terms: D003198:Computer Simulation; D005145:Face; D006801:Humans; D007090:Image Interpretation, Computer-Assisted / Q000379:methods; D016247:Information Storage and Retrieval / Q000379:methods; D016571:Neural Networks, Computer; D010363:Pattern Recognition, Automated / Q000379:methods*; D019047:Phantoms, Imaging