文档介绍：Principles of Information Science
Chapter 6
Information Processing & Cognition:
Knowledge Theory
1. Information Processing
Definition of Information processing:
All operations exerted to the information itself for its
better utilization.
Information processing is necessary because most of
the information in its original form may not be good
for use. Thus information processing is the basis of
later operations.
Two categories of information processing:
1) Shallow Level of Information Processing
2) Deeper Level of Information Processing
Shallow Level of Information Processing
1. Processing for better operation:
information transformation & expression
2. Processing for better transferring:
communication & exchange
3. Processing for better maintaining:
record & storage
4. Processing for better sharing:
copying & reproduction
5. Processing for better retrieval:
classification, ordering, indexing
Deeper Level of Information Processing
1. Processing for higher efficiency:
compression based on syntax and semantics
2. Processing for improving noise immunity:
error correction based on syntax & semantics
3. Processing for purifying:
recognition & filtering
4. Processing for security improving
cryptography based on syntax & semantics
5. Processing for better utility:
prediction, search, inference, computation
Information Cognition
The purpose of information cognition is to produce
knowledge from information refining.
Cognition
Information
Knowledge
Information: The state & its varying manner.
Knowledge: The states & their varying laws.
2. Knowledge Theory
Classification of Knowledge
Formal Knowledge --
deals with the morphological relation of the object
Content Knowledge --
deals with the logical relation
Utility Knowledge --
deals with the value relation to the subject
Knowledge can only be the product of epistemological
information.
Representation of Knowledge
The elements of representation:
-- States
-- Manner of the states varying
Stat