Explain: Property Inheritance Algorithm, with example.

In property inheritance, elements inherit values from being members of a class.

• Data must be organized into a hierarchy of classes.
• This is shown in the figure below –

Here, the BOXED NODES represent objects and values of attributes of the objects.

• The VALUES can be objects with attributes, and so on.
• ARROWS point from object to its value.
• This structure is known as Slot and Filler structure, Semantic network, or a collection of frames.

Algorithm:

    1. Find the object in the knowledge base.

    2. If there is a value for the attribute, report it.

    3. Otherwise, look for a value of instance, if none fail.

    4. Otherwise, go to that node and find a value for the attribute, and then report it.

    5. Otherwise, search through using isa until a value for the attribute is found.