Kant argued that the mind imposes categories on the objects of experience and perception must conform to a spatial-temporal shaping. In the A.s.a. H. light software* spatial shaping is performed by the NM input arrangement and temporal shaping is performed by the steps T and by TMAX. Categories/concepts are formed by the various layers of the hierarchical memory.** At the lowest level of the hierarchy Russell's "sense-data" are input, the data of immediate experience.
* See blogs of 10 February 2011 and 14 May 2012.
** See, for example, blogs of 1 January 2017 and 3 August 2018.