Gianni Di Pillo

A two-objective optimization of ship itineraries for a cruise company

  • Gianni Di Pillo
  • Marcello Fabiano
  • Stefano Lucidi
  • Massimo Roma
    • Categories Applications - OR and Management Sciences, Transportation

    This paper deals with the problem of cruise itinerary planning which plays a central role in worldwide cruise ship tourism. In particular, the Day-by-day Cruise Itinerary Optimization (DCIO) problem is considered. Assuming that a cruise has been planned in terms of homeports and journey duration, the DCIO problem consist in determining the daily schedule of … Read more

    An augmented Lagrangian method exploiting an active-set strategy and second-order information

  • Andrea Cristofari
  • Gianni Di Pillo
  • Giampaolo Liuzzi
  • Stefano Lucidi
    • Categories Constrained Nonlinear Optimization Tags , , ,

    In this paper, we consider nonlinear optimization problems with nonlinear equality constraints and bound constraints on the variables. For the solution of such problems, many augmented Lagrangian methods have been defined in the literature. Here, we propose to modify one of these algorithms, namely ALGENCAN by Andreani et al., in such a way to incorporate … Read more