Interactive multi-objective visualizations...Multi-objective evaluation When designing planning and...
Transcript of Interactive multi-objective visualizations...Multi-objective evaluation When designing planning and...
Interactive multi-objective visualizations
Natural Resouces Management
Integrated Water Resources Management
Spring semester 2015
Andrea Cominola
Learning objectives
• Understanding multi-objective problems in WRM
• Exploring a variety of tools and techniques to interactively
visualize multiple objectives
• Learning how to identify the Pareto front in multi-objective
problems and how to describe the tradeoffs among different
objectives.
Multiple objectives in NRM
When designing planning and management policies of water
many stakes and stakeholders are involved:
… any example?
When designing planning and management policies of water
many stakes and stakeholders are involved:
You are defining performance indicators for different stakeholders in your project. Examples?
Multiple objectives in NRM
Lake
Maggiore
irrigation
hydropower production
flood protection recreation
Multiple actions
When designing planning and management policies of water
many stakes and stakeholders are involved.
Alternative actions can be implemented, in order to manage water
resources and meet one or more stakes:
• Structural actions
o Building a dam
o Building irrigation channels
o Building drainage systems
o Locating and building hydropower plants
o Sediments removal
o River banks maintenance
Multiple actions
When designing planning and management policies of water
many stakes and stakeholders are involved.
Alternative actions can be implemented, in order to manage water
resources and meet one or more stakes:
• Structural actions
• Non-structural actions
o Designing water releases policies
o Designing water distribution rules
o Assigning water rights and priorities
o Designing financial tools for flood protection (e.g., insurance)
o Designing water prices
o Education campaigns
Multi-objective evaluation
When designing planning and management policies of water
many stakes and stakeholders are involved.
Alternative actions can be implemented, in order to manage water
resources and meet one or more stakes:
DIFFERENT ACTIONS
DIFFERENT CONSEQUENCES ON DIFFERENT STAKES
Multi-objective evaluation
OBJECTIVES SPACE
Unmet irrigation
demand
Unmet hydropower
demand
Multi-objective evaluation
OBJECTIVES SPACE
Unmet irrigation
demand
Unmet hydropower
demand
PREFERENCE
DIRECTIONS
Multi-objective evaluation
OBJECTIVES SPACE
Unmet irrigation
demand
Unmet hydropower
demand
IDEAL POINT
Multi-objective evaluation
OBJECTIVES SPACE
Unmet irrigation
demand
Unmet hydropower
demand PARETO FRONT
Multi-objective evaluation
DECISIONS SPACE
New irrigation
channels alternatives
Release policies
Multi-objective evaluation
DECISIONS SPACE OBJECTIVES SPACE
Multi-objective evaluation
DECISIONS SPACE OBJECTIVES SPACE
?
Multi-objective evaluation
DECISIONS SPACE OBJECTIVES SPACE
SIMULATION
MODELS
INTERACTIVE
VISUALIZATION
TOOLS
How to select among alternative actions?
Visualizing tradeoffs among evolving multi-
sector objectives is key for supporting
decision making processes
Let’s get started with a simple example
Lake
Maggiore
irrigation
hydropower production
flood protection recreation
PHYSICAL SYESTEM
DOWNSTREAM HYDROPOWER PRODUCERS
DOWNSTREAM FARMERS
INHABITANTS OF THE LAKE SHORES
RECREATION SECTOR
Let’s get started with a simple example
STAKEHOLDERS
Maximize hydropower production in order to meet the
demand
Maximize crop production
Minimize flooding events intensity
Maximize the volume of water available in the lake for
recreation activities in conditions of low lake storage
Let’s get started with a simple example
OBJECTIVES
Average unmet hydropower demand [m3/d]
Average unmet irrigation demand [m3/d]
Average flood events intensity during the whole time horizon
[m]
Average storage deficit with respect to a minimum threshold
[m3]
Let’s get started with a simple example
PERFORMANCE INDICATORS
Let’s get started with a simple example
CONTROLS
Let’s get started with a simple example
SUMMARY
• 4 OBJECTIVES
• 3 CONTROLS
Average flood level [m]
Unmet Irr demand [m3/d]
Unmet Hydro demand [m3/d]
Unmet Recreation storage [m3]
1 5.76E-01 1.12E+01 1.12E+01 1.14E+01
2 2.69E+00 1.20E+01 1.20E+01 4.96E+00
3 1.98E+01 1.22E+01 1.22E+01 1.74E-02
4 8.55E-01 1.14E+01 1.14E+01 9.82E+00
5 1.17E+00 1.11E+01 1.11E+01 8.57E+00
6 9.89E-01 1.15E+01 1.15E+01 9.17E+00
… … … … …
Interactive multi-objective visualization
Average flood level [m]
Unmet Irr demand [m3/d]
Unmet Hydro demand [m3/d]
Unmet Recreation storage [m3]
1 5.76E-01 1.12E+01 1.12E+01 1.14E+01
2 2.69E+00 1.20E+01 1.20E+01 4.96E+00
3 1.98E+01 1.22E+01 1.22E+01 1.74E-02
4 8.55E-01 1.14E+01 1.14E+01 9.82E+00
5 1.17E+00 1.11E+01 1.11E+01 8.57E+00
6 9.89E-01 1.15E+01 1.15E+01 9.17E+00
… … … … …
Interactive multi-objective visualization
Is this a good visualization?
Let’s analyze some EFFECTIVE
interactive multi-objective visualization
options
Interactive decision maps
Practical example using Lotov
Interactive Multi-objective visualization
Practical example using DiscoveryDV
Interactive Multi-objective visualization
Parallel plots
Interactive Multi-objective visualization
3D virtual reality
How to decide among different actions? Traditional water operations suffer policy myopia as they are based on a priori multicriteria
decision analysis and fail to explore the full set of tradeoffs between evolving multi-sector
objectives.
How to decide among different actions? Traditional water operations suffer policy myopia as they are based on a priori multicriteria
decision analysis and fail to explore the full set of tradeoffs between evolving multi-sector
objectives.
Interactive Multi-objective visualization
Adding objectives changes the interpretation of results.