• Conceptual design of decision support system
  • Another example of visualization of alternatives
  • Demonstration of changing preference model and impact to recommended solution
  • Filtering Alternatives

Information Visualization to Support Decision Making

This interdisciplinary project was headed by Dr. Gunilla Öberg. It was a collaborative effort between industry, university and municipal partners aiming to develop a decision support tool to aid in the design and selection of sustainable (waste)water management alternatives. I lead the continued development of a software tool which involves methods for preference elicitation, information visualization, decision analysis and artificial intelligence (including the development of an ontology) to support municipal and community decision-makers to make more robust, long-term decisions about waste-water management.

Below: Demonstration of ValueCharts, used to help decision-makers explore alternatives and trade-offs between designs (columns). Video shows how changing criteria/objective weights (rows) can effect comparisons and assessment of a design. The changing of weights can be reflective of differences in priorities/preferences for individuals or organizations. Not shown are features which allow the user to navigate to detailed report information by clicking on the criteria, designs or any individual assessment of the criteria for any given design (bar charts). Note: most recent version includes improved graphical interface and multi-user statistical assessment to identify major differences in priorities between individual users.


Taheri, H., Carenini, G., Chamberlain, B.C., Poole, D. and Öberg, G. (in prep) Potential Role of Interactive Visualization to Support Structured Decision Making Processes in Infrastructure Planning. European Journal of Operational Research.

Chamberlain, B., Carenini, G., Öberg, G., Poole, D., Taheri, H. (2014) A Decision Support System for the Automation and Evaluation of Sustainable Wastewater Solutions. IEEE Transactions on Computers. 63(1):129-141.

Bajracharya, S., Carenini, G., Chamberlain, B., Poole, D., Taheria, H., Öberg, G., Interactive Visualization For Decision Making In Sewage Management. International Water Association Specialist Conference: Sustainable Wastewater Treatment and Resource Recovery. Kathmandu, Nepal, October 2014.

Chamberlain, B., Zarei, A., Taheri, H., Poole, D., Carenini, G. and Öberg, G. (2012). Designing Sustainable Wastewater Systems: Generating Design Alternatives. 3rd International Conference on Computational Sustainability, Copenhagen, Denmark, July 2012. [poster]

Chamberlain, B., Taheri, H., Carenini, G., Poole, D., and Öberg, G. (2012). Designing Sustainable Wastewater Systems: Visual, Interactive Preference Elicitation. 3rd International Conference on Computational Sustainability, Copenhagen, Denmark, July 2012 [poster]

Poole, D., Chamberlain, B., Carenini, G. and Öberg, G. (2012) Visualization for complex decision making – with applications in sustainability. Vancouver Institute for Visual Analytics, Face-To-Face VIII, Vancouver, BC, April 26-27, 2012.

Öberg, G. Carenini, G., Chamberlain, B., Harris, L., LaValle, A., Taheri, H. (2011). Supporting Communities in the Selection of Suitable Waste Water Alternatives. U21 workshop on Water Reuse, November 29-30, 2011, Singapore.


Dr. Gunilla Öberg
Dr. Giuseppe Carenini
Dr. David Poole
Hamed Taheri
Sanjana Bajracharya


The Real Estate Foundation of BC
Dr. Max Maurer, EAWAG

Special Thank you to Dr. Maurer and Dr. Jana van Horn from the Swiss Federal Institute of Aquatic Science and Technology for supporting my extended stay at EAWAG in 2011.