The main goal of the CIME Summer School on "Algebraic Cycles and Hodge
Theory" has been to gather the most active mathematicians in this area
to make the point on the present state of the art. Thus the papers
included in the proceedings are surveys and notes on the most important
topics of this area of research. They include infinitesimal methods in
Hodge theory; algebraic cycles and algebraic aspects of cohomology and
k-theory, transcendental methods in the study of algebraic cycles.