Tapio Westerlund

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