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Program Structure Tree
A program structure tree (PST) is a hierarchical diagram that displays the nesting relationship of single-entry single-exit (SESE) fragments/regions, showing the organization of a computer program A computer program is a sequence or set of instructions in a programming language for a computer to execute. Computer programs are one component of software, which also includes documentation and other intangible components. A computer program .... Nodes in this tree represent SESE regions of the program, while edges represent nesting regions. The PST is defined for all control flow graphs. Bibliographical notes These notes list important works which fueled research on parsing of programs and/or (work)flow graphs (adapted from Section 3.5 in ). *The connectivity properties are the basic properties of graphs and are useful when testing whether a graph is planar or when determining if two graphs are isomorphic. John Hopcroft and Robert Endre Tarjan (1973) developed an optimal (to wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hierarchical
A hierarchy (from Greek: , from , 'president of sacred rites') is an arrangement of items (objects, names, values, categories, etc.) that are represented as being "above", "below", or "at the same level as" one another. Hierarchy is an important concept in a wide variety of fields, such as architecture, philosophy, design, mathematics, computer science, organizational theory, systems theory, systematic biology, and the social sciences (especially political philosophy). A hierarchy can link entities either directly or indirectly, and either vertically or diagonally. The only direct links in a hierarchy, insofar as they are hierarchical, are to one's immediate superior or to one of one's subordinates, although a system that is largely hierarchical can also incorporate alternative hierarchies. Hierarchical links can extend "vertically" upwards or downwards via multiple links in the same direction, following a path. All parts of the hierarchy that are not linked vertically to one ano ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Single-entry Single-exit
In mathematics graph theory, a single-entry single-exit (SESE) region in a given graph is an ordered edge pair. For example, with the ordered edge pair, (''a'', ''b'') of distinct control-flow edges ''a'' and ''b'' where: #''a'' dominates ''b'' #''b'' postdominates ''a'' # Every cycle containing ''a'' also contains ''b'' and vice versa. where a node ''x'' is said to dominate node ''y'' in a directed graph In mathematics, and more specifically in graph theory, a directed graph (or digraph) is a graph that is made up of a set of vertices connected by directed edges, often called arcs. Definition In formal terms, a directed graph is an ordered pa ... if every path from start to ''y'' includes ''x''. A node ''x'' is said to postdominate a node ''y'' if every path from ''y'' to end includes ''x''. So, ''a'' and ''b'' refer to the entry and exit edge, respectively. * The first condition ensures that every path from start into the region ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Computer Program
A computer program is a sequence or set of instructions in a programming language for a computer to execute. Computer programs are one component of software, which also includes documentation and other intangible components. A computer program in its human-readable form is called source code. Source code needs another computer program to execute because computers can only execute their native machine instructions. Therefore, source code may be translated to machine instructions using the language's compiler. ( Assembly language programs are translated using an assembler.) The resulting file is called an executable. Alternatively, source code may execute within the language's interpreter. If the executable is requested for execution, then the operating system loads it into memory and starts a process. The central processing unit will soon switch to this process so it can fetch, decode, and then execute each machine instruction. If the source code is requested for execution, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nesting (computing)
In computing science and informatics, nestinghttps://study.com/academy/lesson/nesting-loops-statements-in-c-programming.html, title=Nesting Loops & Statements in C Programming is where information is organized in layers, or where objects contain other similar objects. It almost always refers to self-similar or recursive structures in some sense. Terminology Nesting can mean: * nested calls: ** using several levels of subroutines ** recursive calls * nested levels of parentheses in arithmetic expressions * nested blocks of imperative source code such as nested if-clauses, while-clauses, repeat-until clauses etc. * information hiding: ** nested function definitions with lexical scope ** nested data structures such as records, objects, classes, etc. * nested virtualization, also called recursive virtualization: running a virtual machine inside another virtual machine In spreadsheets In a spreadsheet functions can be ''nested'' one into another, making complex formulas. The func ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Petra Mutzel
Petra Mutzel is a German computer scientist, a University Professor of computer science at the University of Bonn. Her research is in the areas of algorithm engineering, graph drawing and combinatorial optimization. Education and career Mutzel earned a diploma in 1990 from the University of Augsburg, in mathematics with computer science. She then earned a doctorate in computer science from the University of Cologne in 1994 under the supervision of Michael Jünger,Faculty profile TU Dortmund, retrieved 2014-07-04. and her in 1999 from the |
Programming Constructs
Program, programme, programmer, or programming may refer to: Business and management * Program management, the process of managing several related projects * Time management * Program, a part of planning Arts and entertainment Audio * Programming (music), generating music electronically * Radio programming, act of scheduling content for radio * Synthesizer programmer, a person who develops the instrumentation for a piece of music Video or television * Broadcast programming, scheduling content for television * Program music, a type of art music that attempts to render musically an extra-musical narrative * Synthesizer patch or program, a synthesizer setting stored in memory * "Program", an instrumental song by Linkin Park from '' LP Underground Eleven'' * Programmer, a film on the lower half of a double feature bill; see B-movie Science and technology * Computer program, a set of instructions that describes how to perform a specific task to a computer. * Computer programmi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
