Hierarchy — A hierarchy (Greek: hierarchia (ἱεραρχία), from hierarches, leader of sacred rites ) is an arrangement of items (objects, names, values, categories, etc.) in which the items are represented as being above, below, or at the same level as one… … Wikipedia
Nested set model — The nested set model is a particular technique for representing nested sets (also known as trees or hierarchies) in relational databases. The term was apparently introduced by Joe Celko; others describe the same technique without naming it [1] or … Wikipedia
Nested word — In computer science, more specifically in automata and formal language theory, nested words are a concept proposed by Alur and Madhusudan as a joint generalization of words, as traditionally used for modelling linearly ordered structures, and of… … Wikipedia
Nested quotation — A nested quotation is a quotation that is encapsulated inside another quotation, forming a hierarchy with multiple levels. When focusing on a certain quotation, one must interpret it within its scope. Nested quotation can be used in literature… … Wikipedia
Nested quote — A nested quote is a quote that is encapsulated inside another quote, forming a hierarchy with multiple levels. When focusing on a certain quote, one must interpret it within its scope. Nested quotes can be used in literature (as in nested… … Wikipedia
Nested stack automaton — In automata theory, a nested stack automaton is a finite automaton that can make use of a stack containing data which can be additional stacks.[1] A nested stack automaton may read its stack, in addition to pushing or popping it. A nested stack… … Wikipedia
nested — ˈnestəd adjective Etymology: from past participle of nest (II) : forming a sequence or hierarchy with each member contained in or containing the next nested subroutines in computer programming … Useful english dictionary
hierarchy — noun /ˈhaɪə.ɹɑː.kɪ,ˈhaɪɹ.ɑːɹ.kɪ/ a) A body of authoritative officials organized in nested ranks. b) Any group of objects ranked so that every one but the topmost is subordinate to a specified one above it. See Also: hierarch, hierarchic,… … Wiktionary
Chomsky hierarchy — Within the field of computer science, specifically in the area of formal languages, the Chomsky hierarchy (occasionally referred to as Chomsky–Schützenberger hierarchy) is a containment hierarchy of classes of formal grammars. This hierarchy of… … Wikipedia
Containment hierarchy — A containment hierarchy is a hierarchical collection of strictly nested sets. Each entry in the hierarchy designates a set such that the previous entry is a strict superset, and the next entry is a strict subset. For example, all rectangles are… … Wikipedia
