Tapio Westerlund

Publication Activity (10 Years)

Years Active: 1979-2022
Publications (10 Years): 7

Top Topics

Convex Optimization

Second Order Cone Program

Global Optimization

Quadratic Program

Top Venues

J. Glob. Optim.

Comput. Chem. Eng.

Publications

Andreas Lundell, Jan Kronqvist, Tapio Westerlund
The supporting hyperplane optimization toolkit for convex MINLP. J. Glob. Optim. 84 (1) (2022)
Jan Kronqvist, David E. Bernal, Andreas Lundell, Tapio Westerlund
A center-cut algorithm for quickly obtaining feasible solutions and solving convex MINLP problems. Comput. Chem. Eng. 122 (2019)
Andreas Lundell, Tapio Westerlund
Solving global optimization problems using reformulations and signomial transformations. Comput. Chem. Eng. 116 (2018)
Jan Kronqvist, Andreas Lundell, Tapio Westerlund
Reformulations for utilizing separability when solving convex MINLP problems. J. Glob. Optim. 71 (3) (2018)
Tapio Westerlund, Ville-Pekka Eronen, Marko M. Mäkelä
On solving generalized convex MINLP problems using supporting hyperplane techniques. J. Glob. Optim. 71 (4) (2018)
Ville-Pekka Eronen, Jan Kronqvist, Tapio Westerlund, Marko M. Mäkelä, Napsu Karmitsa
Method for solving generalized convex nonsmooth mixed-integer nonlinear programming problems. J. Glob. Optim. 69 (2) (2017)
Jan Kronqvist, Andreas Lundell, Tapio Westerlund
The extended supporting hyperplane algorithm for convex mixed-integer nonlinear programming. J. Glob. Optim. 64 (2) (2016)
Anders Skjäl, Tapio Westerlund
New methods for calculating α BB-type underestimators. J. Glob. Optim. 58 (3) (2014)
Andreas Lundell, Anders Skjäl, Tapio Westerlund
A reformulation framework for global optimization. J. Glob. Optim. 57 (1) (2013)
Axel Nyberg, Tapio Westerlund, Andreas Lundell
Improved Discrete Reformulations for the Quadratic Assignment Problem. CPAIOR (2013)
Axel Nyberg, Tapio Westerlund
A new exact discrete linear reformulation of the quadratic assignment problem. Eur. J. Oper. Res. 220 (2) (2012)
Anders Skjäl, Tapio Westerlund, Ruth Misener, Christodoulos A. Floudas
A Generalization of the Classical αBB Convex Underestimation via Diagonal and Nondiagonal Quadratic Terms. J. Optim. Theory Appl. 154 (2) (2012)
Toni Lastusilta, Tapio Westerlund
A Comparative Study of Solving Quadratic Assignment Problems using Some Standard MINLP Solvers. SIMULTECH (2011)
Claus Still, Tapio Westerlund
A linear programming-based optimization algorithm for solving nonlinear programming problems. Eur. J. Oper. Res. 200 (3) (2010)
Andreas Lundell, Tapio Westerlund
Convex underestimation strategies for signomial functions. Optim. Methods Softw. 24 (4-5) (2009)
Andreas Lundell, Joakim Westerlund, Tapio Westerlund
Some transformation techniques with applications in global optimization. J. Glob. Optim. 43 (2-3) (2009)
Ray Pörn, Kaj-Mikael Björk, Tapio Westerlund
Global solution of optimization problems with signomial parts. Discret. Optim. 5 (1) (2008)
Joakim Westerlund, Lazaros G. Papageorgiou, Tapio Westerlund
A MILP model for N-dimensional allocation. Comput. Chem. Eng. 31 (12) (2007)
Claus Still, Tapio Westerlund
Solving Convex MINLP Optimization Problems Using a Sequential Cutting Plane Algorithm. Comput. Optim. Appl. 34 (1) (2006)
Claus Still, Tapio Westerlund
A sequential cutting plane algorithm for solving convex NLP problems. Eur. J. Oper. Res. 173 (2) (2006)
Ignacio Castillo, Joakim Westerlund, Stefan Emet, Tapio Westerlund
Optimization of block layout design problems with unequal areas: A comparison of MILP and MINLP optimization methods. Comput. Chem. Eng. 30 (1) (2005)
Ignacio Castillo, Tapio Westerlund
An epsilon-accurate model for optimal unequal-area block layout design. Comput. Oper. Res. 32 (2005)
Stefan Emet, Tapio Westerlund
Comparisons of solving a chromatographic separation problem using MINLP methods. Comput. Chem. Eng. 28 (5) (2004)
Kaj-Mikael Björk, Per Olov Lindberg, Tapio Westerlund
Some convexifications in global optimization of problems containing signomial terms. Comput. Chem. Eng. 27 (5) (2003)
Janne Roslöf, Iiro Harjunkoski, Tapio Westerlund, Johnny Isaksson
Solving a large-scale industrial scheduling problem using MILP combined with a heuristic procedure. Eur. J. Oper. Res. 138 (1) (2002)
Iiro Harjunkoski, Tapio Westerlund, Ray Pörn, Hans Skrifvars
Different transformations for solving non-convex trim-loss problems by MINLP. Eur. J. Oper. Res. 105 (3) (1998)
Seppo Karrila, Tapio Westerlund
An elementary derivation of the maximum likelihood estimator of the covariance matrix, and an illustrative determinant inequality. Autom. 27 (2) (1991)
Pertti M. Mäkilä, Tapio Westerlund, Hannu T. Toivonen
Constrained linear quadratic gaussian control with process applications. Autom. 20 (1) (1984)
Hannu T. Toivonen, Tapio Westerlund
Comments on self-tuning regulator applied to a binary distillation column. Autom. 15 (2) (1979)
Hannu T. Toivonen, Tapio Westerlund
Reply by toivonen and westerlund. Autom. 15 (2) (1979)