Q84.Marks: +2.0UGC NET Paper 2: Computer Science and Application 26th June 2025 Shift 1
Consider the following statements regarding STRIPS representation of a Planning problem
A. STRIPS is a Feature-centric representation
B. The features describing state of the world are divided into Primitive and Derived
C. The STRIPS representation of the action comprises of Precondition and Effect
D. STRIPS can directly define conditional effects.
Choose the correct answer from the options given below:
1.A, C Only
2.B, C Only✓ Correct
3.A, D Only
4.B, C, D Only
Solution
The correct answer is Option 2: B, C Only
Key Points
Statement B: ✅ In STRIPS representation, features describing the state of the world can be divided into **primitive features** (directly observable and cannot be derived from other features) and **derived features** (computed based on primitive features).
Statement C: ✅ STRIPS representation defines actions in terms of their **preconditions** (conditions that must hold true before the action can be executed) and **effects** (changes to the state of the world caused by the action).
Statement A: ❌ STRIPS is not explicitly referred to as a "feature-centric representation." It is more commonly described as a symbolic representation of actions and states using logical predicates.
Statement D: ❌ STRIPS does not inherently support conditional effects. Conditional effects require extensions to the basic STRIPS framework.
Additional Information
STRIPS: The Stanford Research Institute Problem Solver (STRIPS) is a formalism used to represent planning problems. It uses logical predicates to describe states and actions.
Preconditions: Preconditions specify the conditions that must hold true for an action to be applicable.
Effects: Effects describe the changes to the world state after an action is executed.
Extensions: Conditional effects and other advanced features are typically added in more sophisticated planning frameworks beyond basic STRIPS.
