The term “artificial intelligence” had previously been used to describe machines that mimic and display “human” cognitive skills that are associated with the human mind, such as “learning” and “problem-solving”. This definition has since been rejected by major AI researchers who now describe AI in terms of rationality and acting rationally, which does not limit how intelligence can be articulated.

Wikipedia

Data protection law does not use the term ‘AI’, so none of your legal obligations depend on exactly how it is defined. However, it is useful to understand broadly what we mean by AI in the context of this guidance. AI has a variety of meanings, including: in the AI research community, it refers to various methods ‘for using a non-human system to learn from experience and imitate human intelligent behaviour’; or in the data protection context, ‘the theory and development of computer systems able to perform tasks normally requiring human intelligence’.

ICO

Artificial intelligence is the simulation of human intelligence processes by machines, especially computer systems. 

Tech Target