Presentation Transcript
Challenges of Applied Risk Management: Challenges of Applied Risk Management by
Ralph L. Keeney
Fuqua School of Business
Duke University
What is Applied Risk Management: What is Applied Risk Management Applied Risk Management is making decisions about risks. It involves
Identifying and analyzing risks
Identifying and evaluating alternatives to deal with these risks
Choosing alternatives to manage risks
Communicating about the decision.
ARM uses models and analyses
Objectives of the Presentation: Objectives of the Presentation Raise a few general issues about analysis
Outline applied risk management
Suggest important aspects of the art of applying risk management
Stimulate some thought (hopefully)
Have some fun!
Why Bother to Make Decisions?: Why Bother to Make Decisions? Your decisions are the only way that you can purposefully influence anything.
Anything includes the quality of your life, your family, your organization, your country, or your world is through the decisions you make.
Everything else just happens.
True or False: True or False It is reasonably likely that a moderate to large hurricane will cause significant damage to the Mid-Atlantic region sometime in the foreseeable future.
Please Define the Following: Please Define the Following reasonably likely
moderate to large hurricane
significant damage
the Mid-Atlantic region
the foreseeable future.
True or False: True or False It is reasonably likely that there will be a moderate to large earthquake in the San Francisco Bay Area in the near future.
Please Define the Following: Please Define the Following Reasonably likely
Moderate to large earthquake
San Francisco Bay Area
Near future
Why Build a Model and Do Analysis?: Why Build a Model and Do Analysis? The real problem is too complex to understand all of its parts and their relationships.
A model is a simplification of the problem.
The model must address the complexities of the problem in order to provide insights about them.
You can analyze the model to produce insights relevant to the real problem.
Complexities of Risk Decisions: Complexities of Risk Decisions Multitude of impacts (multiple objectives)
Some intangible impacts (hard to measure)
Requires multiple disciplines
Long-term impacts
Uncertainties about impacts
These are ‘factual’ uncertainties
Professional judgments required
Several Stakeholders
Values are crucial
Aggregation of impacts is necessary
Policy (value) judgments required
Some vexing value tradeoffs
Unclear decision process and decision-makers
Need to justify decisions
Decision Analysis Addresses the Complexities Inherent in ARM: Decision Analysis Addresses the Complexities Inherent in ARM A formalization of common sense applied to decision problems.
A philosophy, articulated by logical axioms, and the techniques and procedures, based upon those axioms, for analyzing complexities inherent in decision problems.
Decision analysis is prescriptive vs. descriptive.
Keys to Effective Decision Making: Keys to Effective Decision Making Work on the right decision problem
Specify your objectives
Create imaginative alternatives
Understand the consequences
Grapple with your tradeoffs
Clarify your uncertainties
Account for your risk tolerance
Consider linked decisions
Elements of Decisions: Elements of Decisions Problem
Objectives
Alternatives
Consequences
Tradeoffs
Uncertainty
Risk Tolerance
Linked Decisions Iteration among the elements is crucial in analysis
Problem: Problem Given a decision problem … then …
Initial problem statement (frame)
Reframed with objectives and alternatives
What is the “risk”
Who is/are the decision-maker(s)
Who are the stakeholders
Problem Examples: Problem Examples Nuclear Repository: best site or portfolio of three
New Orleans Levees: build a new levee, how high to build, how strong to build
How to effectively communicate about a hurricane approaching Florida
Objectives: Objectives Objectives state what you want to achieve by making a decision
Define objectives using a verb and an object
Minimize environmental degradation
Limit loss of life
Minimize property damage
Objectives are elicited from individuals
Ex: Choosing a Dissertation Topic : Ex: Choosing a Dissertation Topic ________________________________________________________
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Suppose you have identified ten potential dissertation topics and now have to pick one. Write down all the objectives that matter to you in selecting a dissertation topic.
Categories to Stimulate Dissertation Objectives: Categories to Stimulate Dissertation Objectives Academic Objectives While A Student
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Academic Objectives After Graduating
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____________________________ We would like you to think a bit harder about the objectives that matter when selecting a dissertation topic. Below you will find four categories of objectives. Many dissertation objectives will fall into one of these four categories. Consider each category and list any additional objectives that matter to you that you did not list previously. Personal Objectives While A Student
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Personal Objectives After Graduating
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AC. ____________________________ AD. ____________________________
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AF. ____________________________ OTHER (any other overlooked criteria that are relevant to deciding on dissertation topic)
Dissertation Study: Dissertation Study Is a topic acceptable to faculty for my doctorate
Is of interest to a faculty member that I want to serve as my advisor
Leads to multiple publishable papers
Is of interest to me/maintains my interest
Can be scoped/is tractable
Uses methods generalizable to other domains
Is interdisciplinary in nature/combines different areas
Utilizes my academic strengths
Does not require lots of data gathering
Does not require a lot of data analysis
Provides opportunity to improve my writing skills
Addresses issues involving collaboration between public and private sectors
Provides opportunity for sufficient quantitative analysis
Allows for personal time during ‘dissertation years’
Is of interest to the research/academic community
Is enjoyable to do
Helps me develop myself academically Helps me build a coherent future research program
Helps me balance my career and personal life
Causes me to learn skills that will be applicable to future research
Prepares me as an independent researcher
Improves ability to write research proposals for funding
Puts me in control of the dissertation process (e.g., content, timing)
Is innovative/pursues a new idea/novel
Is insightful/has results that weren’t obvious prior to my work
Is relevant to real-world applications/is implementable
Will help people/organizations make better decisions
Addresses problems that are important
Influences the work of others
Stimulates discussion with colleagues
Leads to potentially fundable future research
Provides basis for further research
Opens new areas of research after the dissertation
Results in an interesting job talk paper
Provides opportunities to work with top scholars Check all objectives that are important to your choice of a dissertation topic.
Dissertation Study Results: Dissertation Study Results self-generated objectives: 7.1 average unaided, 4.5 additional with categories relevant objectives: 21.3 average recognized objectives: 9.3 average importance: self-generated average 7.7
recognized objectives average 7.2
bogus objective average 2.1
baseline objective average 4.2
Identifying Objectives: Identifying Objectives From decision makers and stakeholders
Get a complete set of objectives
Distinguish between fundamental objectives and means objectives (max wind speed over land vs. fatalities)
Identifying Objectives Requires Work: Identifying Objectives Requires Work Individuals miss many objectives
Experimental results
Real-world decisions
Devices to stimulate thinking
Wish list
Generic (health and safety, environmental, social, economic)
Use alternatives
Ask why?
Involve multiple individuals
Alternatives: Alternatives Need to create alternatives
Creative alternatives are needed
Use objectives to stimulate thinking about alternatives (NYFD study)
Iterate through decision analysis steps
Delete poorer alternatives
Embellish/change others
Exercise: Exercise What are the objectives?
What are some alternatives? Problem: Effective Communication about an Approaching Hurricane
Consequences: Consequences Need to measure objectives
Natural scales
Constructed scales
Proxy measures
Use models, data, and information to describe consequences
Most time, effort, and cost of analysis involves building the model and collecting the data
Consequences are uncertain
Ghost Dance Fault: Ghost Dance Fault What is the probability that the Ghost Dance fault is active?
What is the definition of active?
What is the Ghost Dance Fault?
Implications for Applications: Implications for Applications Unambiguously clarify terms
Quantify uncertainties
Quantify consequences (or fully and completely describe them)
Develop clearly defined measurement scales
“Get the Data First”: “Get the Data First” Usually a bad idea
The objectives, alternatives, and tradeoffs indicate what data and information is desired
Much of the ‘data’ collected first may turn out to be irrelevant
Ex: Auburn Dam Reservoir Induced Seismicity
Tradeoffs: Tradeoffs Minimizing the risk is not the objective
Construct an objective function
There are multiple objectives and these must be ‘balanced’ using value tradeoffs (i.e. even swaps)
Risk tolerance is also relevant
Value judgments are required to do this
Tradeoffs - What is More Important: Tradeoffs - What is More Important In cleaning up hazardous waste sites, rank the following in order of importance (1 is most important): ___ Economic costs of the clean-up
___ Human illness caused by the hazard
___ Damage caused to the natural environment
(i.e. flora and fauna)
Decisions Based on Values: Decisions Based on Values Most common error: which objective is most important In cleaning up hazardous waste sites, check the alternative that you prefer:
___ Alternative A which costs $1 billion and 20 people nationwide subsequently get very ill for 1 week each.
___ Alternative B which costs $2 billion and 10 people nationwide subsequently get very ill for 1 week each.
Uncertainty: Uncertainty Uncertainty is the lack of complete knowledge of what is or what might occur
Probability quantifies uncertainty (coin flip)
Because of uncertainty, you won’t know what consequences you will get until after deciding
What are some decisions without uncertainties?
Risk Profile: Introduction: Risk Profile: Introduction What are the key uncertainties?
What are the possible outcomes of these uncertainties?
What are the probabilities of occurrence of each possible outcome?
What are the consequences of each outcome?
A Perspective on Analysis: A Perspective on Analysis People make decisions
The model is not the real world, so answers for the model are not answers to the problem
No analysis ever makes a decision
Analysis, done well, can provide insight to make good (or better) decisions
Good analysis includes sensitivity analyses
Analysis and insights provide a basis for communicating
On Objective Analysis: On Objective Analysis There is no objective analysis
The foundation of any analysis is based on subjective judgments
Problem
Objectives
Alternatives
Data and Information Sources
Foundation is common sense
Analysis can be systematic, honest, justifiable, consistent, understandable
Summary Points: Summary Points The problem drives the analysis
The objectives and alternatives define the analysis
Include all that is important to the problem
The standard for what you should do and how you should do it is common sense