Principles of Information Science Chapter 2 The Concept description of information
Chapter 2 The Concept & Description of Information Principles of Information Science
Problems to be concerned with 1. How should we define the concept of Information 2. What are the typical features of Information compared with matter and energy 3. What are the relationship and difference between Shannon Information and Comprehensive Information 4. How to reasonably classify Information 5. How to properly represent Information
Problems To Be Concerned With 1. How should we define the concept of Information ? 2. What are the typical features of Information compared with matter and energy ? 3. What are the relationship and difference between Shannon Information and Comprehensive Information ? 4. How to reasonably classify Information ? 5. How to properly represent Information ?
2-1 Definitions of information Some of the existing definitions N. Wiener: Neither matter, nor energy. C. Shannon: Something that can be used to remove uncertainty. R. Ashby: The variety of a set L Bertalanffy: The complexity of a system G. Longo: The difference among things Dictionary: The message unknown before
2-1 Definitions of Information Some of the existing definitions N. Wiener: Neither matter, nor energy. C. Shannon: Something that can be used to remove uncertainty. R. Ashby: The variety of a set. L. Bertalanffy: The complexity of a system. G. Longo: The difference among things. Dictionary: The message unknown before
Some Interrelated and Easily Confused Concepts Information Message Signal/ media Data Code Knowledge
Information Signal / Media Message Data Knowledge Some Interrelated and Easily Confused Concepts Code
Our Understanding of Information Constraints Levels Applicability None Highest Widest Least Second Highest Second Widest More Lower Narrower The most The lowest The narrowest
Our Understanding of Information Constraints Levels Applicability None Highest Widest Least Second Highest Second Widest More Lower Narrower The Most The Lowest The Narrowest