PEAS

 

Understanding PEAS in Artificial Intelligence

 

We know that there are different types of agents in AI. PEAS System is used to categorize similar agents together. The PEAS system delivers the performance measure with respect to the environment, actuators and sensors of the respective agent. Most of the highest performing agents are Rational Agents. 
Rational Agent: The rational agent considers all possibilities and chooses to perform the highly efficient action. For example it chooses the shortest path with low cost for high efficiency. 
PEAS stands for Performance measure, Environment, Actuator, Sensor. 
 

  1. Performance Measure: Performance measure is the unit to define the success of an agent.Performance varies with agents based on their different precept.
  2. Environment: Environment is the surrounding of an agent at every instant. It keeps changing with time if the agent is set in motion.There are 5 major types of environments: 
    • Fully Observable & Partially Observable
    • Episodic & Sequential
    • Static & Dynamic
    • Discrete & Continuous
    • Deterministic & Stochastic
  3. Actuator: Actuator is a part of the agent that delivers the output of an action to the environment.
  4. Sensor: Sensors are the receptive parts of an agent which takes in the input for the agent.

 

AgentPerformance MeasureEnvironmentActuatorSensor
Hospital Management SystemPatient’s health, Admission process, PaymentHospital, Doctors, PatientsPrescription, Diagnosis, Scan reportSymptoms, Patient’s response
Automated Car DriveComfortable trip, Safety, Maximum DistanceRoads, Traffic, VehiclesSteering wheel, Accelerator, Brake, MirrorCamera, GPS, Odometer
Subject TutoringMaximize scores, Improvement is studentsClassroom, Desk, Chair, Board, Staff, StudentsSmart displays, CorrectionsEyes, Ears, Notebooks

 

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