plural of natural grammar

A hypothetical alternative to the anthropic principle that attempts to explain the complexity of the universe

(immunology) Any cell that expresses cell surface receptors that deliver signals to either activate or inhibit a response as part of the innate immune system.

A subtopic of natural language processing in artificial intelligence that deals with machine reading comprehension.

Natural gas that has been cooled and compressed to liquid form for transport and storage.

plural of natural user interface

(computing) A user interface for a computer that is effectively invisible, or becomes invisible to its users with successive learned interactions.

A field of computer science and linguistics concerned with the interactions between computers and human (natural) languages, especially computational analysis and processing of large amounts of natural language data.

(demography) The difference between the crude birth rate and the crude death rate of a population

(category theory) An object which has a distinguished global element (which may be called z, for “zero”) and a distinguished endomorphism (which may be called s, for “successor”) such that iterated compositions of s upon z (i.e., sⁿ∘z) yields other global elements of the same object which correspond to the natural numbers (sⁿ∘z↔n). Such object has the universal property that for any other object with a distinguished global element (call it z’) and a distinguished endomorphism (call it s’), there is a unique morphism (call it φ) from the given object to the other object which maps z to z’ (𝜙∘z=z') and which commutes with s; i.e., 𝜙∘s=s'∘𝜙.