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Sandip S. Patil, profile picture
Uploaded bySandip S. Patil
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Script

Conceptual Dependency (CD) is a theory that uses a set of primitive symbols to represent complicated knowledge and solve problems by graphically presenting high-level concepts. Various primitives used in CD include actions like transferring objects or information, moving body parts, grasping objects, ingesting objects, and speaking. An example CD representation shows "John ate the egg" using symbols like INGEST to represent the action of eating.

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Conceptual Dependency (CD): Conceptual Dependency is a high level strong filler structure which is used to represent high level complicated knowledge which requires solving complicated problems. CD is collection of symbols which are used to represent knowledge. CD is the graphical presentation of high level knowledge. CD is a theory of how to represent the kind of natural about events that is usually contained in natural language sentences
Various Primitives (Symbols) used in CD The set of primitive actions in CD, proposed by Schank and Abelson, is presented below 1. ATRANS: - Transfer of an abstract entity (e.g. Give) 2. PTRANS: - Transfer of an physical location of an object (Go) 3. PROPEL:- application of physical force to an object (Push) 4. MOVE:- movement of body part by it’s owner (Kick) 5. GRASP: - Grasping or holding the object tightly by an actor (Clutch , Grasp) 6. INGEST: - Ingestion of an object by an animal (eat) 7. XPEL:- expulsion of something from the body of animal (Cry) 8. MTRANS: - transfer of an mental information (Tell) 9. MBUILD:- Building a new information out of old (Decide) 10. SPEAK: - Production of sound 11. ATTEND: - Focusing of a sense organ towards a stimulus (listen)
Conceptual dependency representing “John ate the egg”(Schank and Rieger 1974).
Script (1977):- (Schank and Abelson, 1977). Script is a structure which is used to represent the knowledge . Script is a structure that describe a sequence of events in particular context scripts are frame like structures used to represent commonly occurring experiences such as going to movies, shopping in supermarket, eating in restaurant, banking. A script consist set of slots and information (knowledge) contained in it Various components of Script are Script Name: - Title Track: - Special situation, specific variation Roles:- peoples involve in the event described in script Entry condition: - required pre situation to execute the script Props: - non live object involve in the Script Scenes: - The actual sequence of events that occur Result: - Condition that will be True after execution of script
• Script Name: -Shopping Script Track:- Super Market Roles: - Shopper, deli attendant , Check out clerk , sacking clerk , Cashier Entry Condition: - Shopper needs groceries, food market open Props: - Shopping Cart , Display aisles , market items ,checkout stands, money SCENE1: - Enter Market Shopper PTRANS Shopper into Market Shopper PTRANS Shopping Cart to Shopper SCENE2: - Shop For Item Shopper MOVE Shopper through aisles Shopper ATTEND eyes to display items Shopper PTRANS item to Shopping Cart SCENE3:- Check Out Shopper MOVE Shopper to check out stand Shopper ATTEND Eyes to charges Shopper ATRANS money to cashier Sacker ATRANS bag to shopper
SCENE4:- Exit Market Shopper PTRANS shopper to exit market Results:- Shopper has less money Shopper has grocery items Market has less grocery items Market has more money
Script