In the artificial intelligence (ai) field, engineers try to discover "rules of thumb" that enable computers to perform tasks usually handled by humans.

Knowledge

Explanation:

Knowledge engineering is done in the field of artificial intelligence (AI)  that attempts to imitate the judgment and conduct of a human master in a given field and help with issues identified with their customized field of information.

A knowledge engineer is an expert whose work is to build up advanced logic into PC frameworks so as to attempt to simulate cognitive tasks of higher level and decision-making in human beings.

Thus a knowledge engineer provides the details of the entire knowledge associated with the built technology.

Therefore, a knowledge engineer tries to find to find out the 'rule of thumbs' thus replacing the task of humans by a computer.

how many characteristics are used to describe living things?

explanation:

the number of senators, and representatives, the state has in congress.