Optimizing creatively in Multi-Objective Optimization

Yassin Ashour, Branko Kolarevic

Research output: Contribution to journalConference articlepeer-review

10 Scopus citations


Designers will always face the challenge of designing well-performing buildings using what are often conflicting and competing objectives. Early stage design decisions influence significantly the final performance of a building and designers are often unable to explore large numbers of design alternatives with respect to the performative criteria set for the project. This research outlines a 'creative optimization workflow' using a Multi-Objective Optimization (MOO) engine called Octopus that runs within Grasshopper3D, a parametric modeling tool, and simulation software DIVA for daylight factor analysis. The workflow utilizes a 'creative optimization tool' which allows the designer to explore, sort and filter solutions, and analyze both quantitatively and qualitatively the trade-offs of the resultant design solution space. It enables the designer to visually compare alternative solutions in a gallery and subsequently analyze trade-offs through a radar-based chart, parallel coordinate plot graphs and conditional domain searches. This feedback tools allows the designer to quickly and efficiently identify potential solutions for either design development or to select preferred solutions for further optimization, i.e. 'optimizing creatively'. A retrospective design case study, the 'De Rotterdam' building, is used to demonstrate the application of the tools. The workflow demonstrates the ability to reduce design latency and to allow for better understanding of design solutions. Additional research is needed to better understand the application of MOO in the early stages of design; and the further improvement of the creative optimization tools to accommodate the designer's need for a more dynamic and synergistic process.

Original languageEnglish (US)
Pages (from-to)128-135
Number of pages8
JournalSimulation Series
Issue number7
StatePublished - 2015
Externally publishedYes
Event2015 Symposium on Simulation for Architecture and Urban Design, SimAUD 2015, Part of the 2015 Spring Simulation Multi-Conference, SpringSim 2015 - Alexandria, United States
Duration: Apr 12 2015Apr 15 2015

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications


  • Generative design
  • Multi-Objective Optimization (MOO)
  • Performance-based design


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