
The LISP Interpreter program maintains several general data structures. The first data structure is a symbol table with an entry for every named data object. These named data objects are called ordinary atoms, and the symbol table of ordinary atoms is called the atom table. (The term atom is historical; that is the term John McCarthy, the designer of LISP [McC60][MIT62], used.) The atom table is conceptually of the following form:
| citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | 0 | |
| popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network. | Average | |
| influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | Average | |
| impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network. | Average |
