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Understanding PEAS in Artificial Intelligence

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  • Difficulty Level : Easy
  • Last Updated : 12 Jul, 2022

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 a highly efficient action. For example, it chooses the shortest path with low cost for high efficiency. PEAS stands for a 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 precepts.
  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: An actuator is a part of the agent that delivers the output of action to the environment.
  4. Sensor: Sensors are the receptive parts of an agent that 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 DriveThe comfortable 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
Part-picking robotPercentage of parts in correct binsConveyor belt with parts; binsJointed arms and handCamera, joint angle sensors
Satellite image analysis systemCorrect image categorizationDownlink from orbiting satelliteDisplay categorization of sceneColor pixel arrays
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