An expert system uses heuristics or rules of thumb, to arrive at conclusions or make suggestions.
meaning and definition of heuristics
Any approach to problem solving or self-discovery that uses a practical method that is not necessarily optimal, perfect, or rational but is nonetheless sufficient for achieving an immediate, short-term goal or approximation is known as a heuristic (from the Ancient Greek (heursk) "I find, discover"). Heuristic methods can be used to expedite the process of obtaining a workable solution in situations when it is impossible or impractical to discover an ideal one. Heuristics are thought of being mental 'shortcuts' that lessen the cognitive strain of decision-making.
Heuristic examples include trial and error, applying a rule of thumb, or making an educated assumption.
Heuristics are tactics that have been developed from prior encounters with challenges that are comparable.
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