acTL

acTL is an acronym that can refer to more than one concept, depending on the field. There is no single universally adopted definition. In the field of computer science and machine learning, acTL is sometimes used to denote adaptive curriculum transfer learning, a framework that combines transfer learning with an adaptive task curriculum to improve learning efficiency across related tasks. In this context, a model is progressively exposed to tasks ordered by difficulty and relevance, with transfer strategies selected based on performance signals.

In electrical engineering and power systems, acTL is occasionally used as shorthand for alternating-current transmission line, which describes the portion of the electrical grid that carries alternating current between substations. Standard terminology typically emphasizes AC transmission line or high-voltage AC line, but acTL appears in some technical glossaries and vendor documents as a compact form.

Other uses have appeared in various organizations' internal documentation, where acTL may stand for organization-specific terms. Because the term is not standardized, readers should rely on contextual definitions within the cited source to determine the intended meaning.

Etymology: The letters expand differently in each field; no common origin is recorded for a universal meaning.

See also: acronym, initialism, transfer learning, alternating-current.