Rule Based System
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Rule based systems are specialized software that encapsulate human intelligence and knowledge to make intelligent decisions quickly and repeatedly. They represent knowledge using if-then rules and work memory. There are two types of rules - forward chaining which is data-driven and deductive, and backward chaining which is goal-driven and inductive. While rule engines are the core of applications, fully utilizing them requires additional components for interfacing, data exchange, data storage, and version management. Examples of companies using rule engines include Dell, Cisco, Vodafone, and Blue Cross Blue Shield.
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Is a good solution to the problem is absolute or relative?
Is the solution to the problem a state or a path?
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Does the task of solving a problem require human interaction?
1. Is the problem decomposable into small sub-problems which are easy to solve?
Can the problem be broken down into smaller problems to be solved independently?
See also Water Jug Problem in Artificial Intelligence
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In the 8-Puzzle, Moves can be undone and backtracked.
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Directions: Insert your answers directly in the Student Analysis column below by doing the following:
· In each of the “Tech Description” fields, describe the GPOS feature using relevant technical terms and topic-related details.
· In each of the “Business Requirement” fields, describe (in business terms) how the absence of this GPOS feature impacts a business such as TSI.
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GPOS Feature
Profile Criteria
Student Analysis
Multiprogramming
Tech Description
In a multiprogramming system, the CPU can switch from one process to another quickly. This allows processes to use the CPU when it would otherwise become idle, basically improving the CPU utilization. Since the TSI OS is incapable of multiprogramming, it is difficult for their systems to switch processes quickly and efficiently, meaning the only way for another process to begin is to wait for the active job to be completed for the next job in line can begin.
Business Requirement
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Multiprocessing
Tech Description
Any system that has a multiprocessor has 2 or more CPUs sharing the same physical memory. It allows multiple processes to run at once. This concept can be tied to multiprogramming as it allows switching between multiple processes.
Business Requirement
The TSI OS cannot support multiple processors on a physical device and the single core processors they purchase are only found on old, decommissioned hardware. The OS freezes when a second processor generates an interrupts.
Multithreading
Tech Description
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Business Requirement
Because the TSI OS system call interface is basic, developers use an open-source software to remove multithreading functionality because the back-office applications that has multithreaded operations hang at launch.
Virtual Memory
Tech Description
Virtual memory gives the ability to run programs larger than the machine’s physical memory. This is done by moving pieces back and forth between the RAM and disk. Also allows a program to dynamically link in a library at run time instead of being compiled (Tanenbaum, 2015, p. 50).
Business Requirement
Because the TSI OS uses a flat memory model without paging, users in the back office have to reboot the system whenever it crashes due to insufficient memory.
System Call Interface
Tech Description
The TSI OS has a basic system call interface. Because of this, there will be compatibility issues with newer sof.
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- 1. Rule Based System Suresh Sambandam
- 2. Rule Based System Also commonly know as Knowledge Based System Expert Systems Artificial Intelligence (AI) History 1970 Stanford University Mycin experiment
- 3. What is a Rule Based System? Rule based system or knowledge based systems are specialized software that encapsulate ‘Human Intelligence’ like knowledge there by make intelligent decisions quickly and in repeatable form
- 4. Key words Quick Repeatable Knowledge
- 5. Understanding Knowledge Factual Knowledge Sequential Knowledge Logical knowledge
- 6. Factual Knowledge Facts Think Data e.g. Info about Employees, Customers, Products, etc Represented in the memory of the computer
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- 10. Gap between the way the problem is stated naturally by a lay person and the way it needs to be coded as a program in a computer. Semantic Gap Scientific Equation FORTRAN vs Assembly Language
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- 14. Forward Chaining - Engine
- 15. Backward Chaining - Engine
- 16. Why are they not widely used ? No standard language for rule definition Proprietary and vendor specific Huge learning curve in vendor specific rule languages Rule Engine Still expects to deal with meta-data (not data) Beats the purpose Current State of Rule Based Systems
- 17. And there is more to it .... Business Rules are core part of any application But there is more to it.You still have to User Interface to drive the business rules Mechanisms to exchange data between the rule engine and application Mechanisms to store the result to a permanent storage (database). Mechanism to reload a previously saved data into the rule engine Ability to deal with multiple versions of the rule base and its effect of past results stored in the database etc etc etc
- 18. Some Real Examples of usage of Rule Engines Dell Cisco Vodafone Blue Cross Blue Shield - Insurance
- 19. Thank You