M4 Flashcards
An approach to building a knowledge based system which is radically different to the rule-based and other knowledge-representation approaches we have seen so far.
Case-base reasoning
The principle of this is to find a solution which has been shown to solve problems like your current problem in the past, and adapt it so that it solves the current problem.
Case-base reasoning
The ___ contains a collection of representative cases (of faults, say, if the system is concerned with fault diagnosis), with their
o symptoms,
o causes,
o and treatments
knowledge base
In case-base reasoning, the user is instructed to provide the (relevant) ___ of the current case. The similarity between this set of ___, and the ___characteristic of each of the stored cases is calculated, and the best match is chosen.
features
In case-base reasoning, the features which have been identified as important in the stored cases, and which the user is asked about, are known as “____”.
indices
The sequence of operations, for a simple CBR systems
1. assign ___
2. retrieve a similar case
indices
The sequence of operations, for a “full-blown” CBR system:
1. assign indices
2. retrieve a similar case
3. modify the ___
4. test the case
5. assign indices to this new case, and store as a working solution OR
6. explain failure, repair the solution, and test again.
past case
Available techniques for case memory organization is by:
o ___ (“flat”) case memory
o case hierarchy
o nested cases
o decision-tree orientated memory
o knowledge-guided indexing
linear
Available techniques for case retrieval is by:
o Nearest neighbor case matching
o ___ nearest neighbor case matching
o Decision tree methods
o Knowledge-guided retrieval
Weighted
This type of memory organization
o case hierarchy
o nested cases
o decision-tree orientated memory
o knowledge-guided indexing
and this type of case retrieval
o Decision tree methods
o Knowledge-guided retrieval
are thought of as ____ systems
hybrid
In CBR, this si also known as “Fixing” inconsistencies between diagnosis and symptoms.
case adaptation
The following are the different techniques for case adaptation
o the end user does it
o knowledge-based (qualitative reasoning, etc)
o a fixed ___.
procedure
One of the advantages of CBR is that it can interpret ___ and ill-defined concepts.
open-ended
What is the granularity of Rule-Base compared to Case based
Coarse, Fine
What is the granularity of Rule-Base compared to Case based
Potentially high, Low
