Page 219 - DCAP310_INTRODUCTION_TO_ARTIFICIAL_INTELLIGENCE_AND_EXPERT_SYSTEMS

Unit 11: Knowledge Organization and Management

Self Assessment Notes

State whether the following statements are true or false:
13. The long-term memory refers to the ability to hold information from immediate past for
a short duration of time.
14. Varieties of same memory models have been proposed to account for different types of
recall processes.
15. E-MOPs are indexed in memory by one or more distinguishing features.

11.6 Summary

The maim aspect of knowledge organization is frame problem.

Among the different file organization is indexed organizations that allows efficient access
are based on the use of a hash function.
One of the important issue is retrieval techniques is concerned with a specific aspect of
research and development (R&D) in information retrieval (IR) systems–that is, the means
for identifying retrieving, and/or ranking texts in a collection of texts, that might be
relevant to a given query (or useful for resolving a particular problem).

Hypertext systems are examples of information organized through associative links, like
associative networks.
The HAM is informed of new sentences; they are parsed and formed into new tree-like
memory structures or integrated with existing ones.

11.7 Keywords

Exact Match Retrieval Techniques: These are those that require that the request model be
contained, precisely as represented in the query formulation, within the text representation.

Expert System: It can be expected to have thousands or even tens of thousands of rules (or their
equivalent) in its KB.
Index File: It is searched to find the desired record key and obtain the corresponding block
address the block is then accessed using this address.
Indexing: It is accomplished by organizing the information in some way for easy access one way
to index is by segregating knowledge.
Object Attributes: It can also serve as indices to locate items based on the attribute values.
Retrieval Techniques: These are based on formal models of document retrieval and indexing.

11.8 Review Questions

1. Explain knowledge organization and management in AI.
2. Explain the indexing and retrieval technique.
3. What is integrating knowledge in memory?
4. Explain the important characteristics should a computer memory organization system
possess.
5. Describe the basic operations must a program perform in order to access specific chunks of
knowledge?

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