eprintid: 1792 rev_number: 4 eprint_status: archive userid: 46 dir: disk0/00/00/17/92 datestamp: 2013-09-17 13:12:13 lastmod: 2013-09-17 13:12:13 status_changed: 2013-09-17 13:12:13 type: article succeeds: 1702 metadata_visibility: show creators_name: Gnecco, Giorgio creators_name: Sanguineti, Marcello creators_id: giorgio.gnecco@imtlucca.it creators_id: title: Value and Policy Function Approximations in Infinite-Horizon Optimization Problems ispublished: pub subjects: QA75 divisions: CSA full_text_status: none keywords: Dynamic optimization, Dynamic programming, Infinite horizon, Approximation schemes, Suboptimal solutions abstract: Abstract Suboptimal solutions to infinite-horizon dynamic optimization problems with continuous state are considered. An underlying dynamical system determining the state transition between each stage and the next one is modelled via the constraints (xt, xt +1) ∈ D, t = 0, 1, …, where X is the set to which the state vector belongs and D ⊆ X × X is a correspondence. An error analysis is performed for two cases: approximation of the value function and approximation of the optimal policy function. Structural properties of the dynamic optimization problems are derived, allowing to restrict a priori the approximation to families of functions characterized by certain smoothness properties. The two approximation approaches are compared and the respective pros and cons are highlighted. date: 2008 date_type: published publication: Journal of Dynamical Systems and Geometric Theories volume: 6 number: 2 publisher: Taylor&Francis pagerange: 123-147 id_number: 10.1080/1726037X.2008.10698552 refereed: TRUE issn: 1726-037X official_url: http://www.tandfonline.com/doi/abs/10.1080/1726037X.2008.10698552 citation: Gnecco, Giorgio and Sanguineti, Marcello Value and Policy Function Approximations in Infinite-Horizon Optimization Problems. Journal of Dynamical Systems and Geometric Theories, 6 (2). pp. 123-147. ISSN 1726-037X (2008)