Transcript Case Based Reasoning Melanie Hanson Engr 315

Case Based Reasoning
Melanie Hanson
Engr 315
What is Case-Based Reasoning?
• Storing information from previous
experiences
• Using previously gained knowledge to
solve current problems
• Similar to human problem solving
methods
Basic Steps
• Identify the problem/case
• Look for a similar, previously
experienced case
• Predict a solution, possibly different
from past experiences
• Evaluate the solution
• Update the system with the results
4 General Concepts
• Retrieve
– Find similar cases
• Reuse
– Use old case to solve
current case
• Revise
– Create a solution
• Retain
– Save the correct
solution
Representation Issues
•
•
•
•
Decide what to store
Choosing the appropriate structure
Organizing memory
General knowledge
How are old cases used?
• Compositional: Combine several
solutions to make one best solution
• Transformational: Use the solution from
a previous case
• Derivational: Apply the solution
achieving process
Why Case-Based Reasoning is Good
• Low maintenance
• Improves with use
• Uses learned knowledge plus general
knowledge
• Case representation is easy to
understand
Trends in Case Based Reasoning
• Integrate with other learning methods
• Integrate with other reasoning
components
• Incorporate into massive parallel
processing
• Advancement by focusing on new
cognitive aspects
Applications of CBR
• Help desks
• Diagnosing problems
• Decision making when considering past
similar situations