Two adults and two children are on the left side of the river. They all want to cross to the right side of the river. However, the only means of transportation they can use is a boat (also initially on the left bank) which can carry either just one adult or one adult and one child or just one child or two children from one bank to the other bank. Any adult or child can operate the boat, but the boat cannot be operated without having at least one person on the boat. The goal is to come up with a plan for moving everyone from the left side to the right side using multiple boat trips. Describe the initial state and the goal, using PDDL. Define appropriate actions for this planning problem, in the PDDL language. For each action, provide a name, arguments, preconditions, and effects.

A plan to move both the adults and two children from the left side of the river to its right side by using multiple boat trips is described through PDDL below.

What is AI?

AI is an abbreviation for Artificial Intelligence and it can be defined as a subfield in computer science that deals with the use of advanced computer algorithms and technology to develop an intelligent, smart computer-controlled robot with the abilities to proffer solutions to very complex problems.

What is PDDL?

PDDL is an abbreviation for Planning Domain Definition Language and it can be defined as a group of programming languages which are designed and developed to avail an end user the ability to define a planning problem.

A plan to move both the adults and two children from the left side of the river to its right side by using multiple boat trips is described through PDDL as follows:

(adult1 Adult)

(adult2 Adult)

(child1 Child)

(child2 Child)

(boat Boat)

(preconditions

(left adult1) (left adult2) (left child1) (left child2) (left boat))

(effects

(right adult1) (right adult2) (right child1) (right child1) (right boat))

For each action, a name, preconditions, arguments, and effects are provided as follows:

(operator

travel-adult

(parameters

(<adult> Adult) (<boat> Boat))

(preconditions

(left <adult>) (left <boat>))

(effects

(right <adult>) (right<boat>) (del left <adult>) (del left <boat>)))

(operator

travel-child-right

(parameters

(<child1> Child) (<child2> Child) (<boat> Boat))

(preconditions

(left <child1>) (left <child2>) (left <boat>))

(effects

(right <child1>) (right <child2>) (right <boat>) (del left <child2>) (del left <child2>)

(del left <boat>)))

(operator

travel-child-left

(parameters

(<child1> Child) (boat Boat))

(preconditions

(right <child1>) (right <boat>))

(effects

(left <child1>) (left <boat>) (del right <child1>) (del right <boat>)))

By using a Planning Domain Definition Language (PDDL), the initial state and goal state are specified as follows:

Initial State: left(child1), left(child2), left(adult1), left(adult2) and left(boat).

Goal State: right(child1), right(child2), right(adult1), right(adult2) and right(boat).

Read more on PDDL here: https://brainly.com/question/15993488

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