could also be conceived with reference to chunks and chunking? and as concerned with an environment model of evaluation
also see:
http://lispm.dyndns.org/news?ID=NEWS-2005-12-25-1
from Rainer Joswig:
The Frame Representation Language (FRL) is an adjunct to LISP which implements several representation techniques suggested by Marvin Minsky's concept of a frame: defaults, constraints, inheritance, procedural attachment and annotation. FRL extends the Property List representation scheme by allowing properties to have comments, defaults and constraints, to inherit information from abstract forms of the same type, and to have attached procedures triggered by adding or deleting values, or if a value is needed.
Carl Hewitt presents an approach to modelling intelligence in terms of communicating knowledge-based problem-solving experts. He describes PLASMA (Planner-like System Modeled on Actors), implemented in terms of actor message passing that is convenient for the interactive construction of scenarious, scripts and justifications. PLASMA is implemented in LISP.
links:
ftp://publications.ai.mit.edu/ai-publications/pdf/AIM-408.pdf ftp://publications.ai.mit.edu/ai-publications/pdf/AIM-409.pdf ftp://publications.ai.mit.edu/ai-publications/pdf/AIM-410.pdf