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	Abstract data structure - Wikipedia, the free encyclopedia
		In theoretical computer science, an abstract data structure is an abstract storage for data defined in terms of the set of operations to be performed on data and computational complexity for performing these operations, regardless the implementation in a concrete data structure.
		Selection of an abstract data structure is crucial in design of efficient algorithms and in estimating their computational complexity, while selection of concrete data structures is important for efficient implementation of algorithms.
		A close notion of data model additionally considers the pattern of interrelations between data elements (structure of the data structure, however awkward that may sound).
	en.wikipedia.org /wiki/Abstract_data_structure (169 words)

	Data structure - Wikipedia, the free encyclopedia
		In the design of many types of programs, the choice of data structures is a primary design consideration, as experience in building large systems has shown that the difficulty of implementation and the quality and performance of the final result depends heavily on choosing the best data structure.
		After the data structures are chosen, the algorithms to be used often become relatively obvious.
		A data structure can be viewed as an interface between two functions or as an implementation of methods to access storage that is organized according to the associated data type.
	en.wikipedia.org /wiki/Data_structure (469 words)

	Abstract structure (Site not responding. Last check: 2007-10-25)
		In this abstract structure, the king, for example, is defined as a piece that can move one square in any direction (except that it may not move onto a square that is under attack by an enemy piece).
		Euclidean geometry is an abstract structure, but the theory of continental drift is not, because it depends on the geology of the Earth.
		A formal language is an abstract structure, but a natural language is not, because its rules of grammar and syntax are open to debate and interpretation.
	hallencyclopedia.com /Abstract_structure (741 words)

	DATA STRUCTURES
		structure of data, for the term is sometime used with that meaning in mind.
		It is an organized structure because, for example, a shelving unit will be a food items substructure within the overall food items structure, and will itself have substructures, such as individual shelves.
		data type, is an abstraction of, that is, what is common to all members of, a set of data structures of the same type.
	pages.cpsc.ucalgary.ca /~bradley/Lec01Cpsc331.htm (955 words)

	ENGR 691 (Software Architecture) Lecture Notes on Data Abstraction, Spring 2004
		By approaching the design of the collection as an abstract data structure, we have limited the parts of the program that must be changed to the small group of procedures that used the array directly; other parts of the program are not affected.
		Conceptually, an abstract data type is a set of entities whose logical behavior is defined by a domain of values and a set of operations on that domain.
		In the terminology we used above, an ADT is set of abstract data structures all of whom have the same domain of possible states and have the same set of operations.
	john.cs.olemiss.edu /~hcc/softArch/notes/dataAbstraction.html (6371 words)

	Encyclopedia: Abstract data structure
		A data model is a model that describes in an abstract way how data is represented in a business organization, an information system or a database management system.
		Data structures Jump to: navigation, search It has been suggested that Stack-Based Memory Allocation be merged into this article or section.
		In computing, an associative array, also known as a map, lookup table, or dictionary, is an abstract data type very closely related to the mathematical concept of a function with a finite domain.
	www.nationmaster.com /encyclopedia/Abstract-data-structure (443 words)

	[No title] (Site not responding. Last check: 2007-10-25)
		Data encapsulation simplifies modification by isolating changes to the implementation and behavior of an abstract data type.
		To perform encapsulation, a programmer must understand how the data structure is used in the code, identify abstract operations performed on the data structure, and choose concrete expressions to be made into functions.
		Additionally, the visualization elides code unrelated to the data structure and to the task, and collapses similar expressions to allow the programmer to identify frequently occurring code fragments and manipulate them together.
	www-cse.ucsd.edu /users/wgg/Abstracts/robert.html (244 words)

	data structure (Site not responding. Last check: 2007-10-25)
		external memory data structure, passive data structure, active data structure, persistent data structure, recursive data structure.
		Note: Most data structures have associated algorithms to perform operations, such as search, insert, or balance, that maintain the properties of the data structure.
		Paul E. Black, "data structure", from Dictionary of Algorithms and Data Structures, Paul E. Black, ed., NIST.
	www.nist.gov /dads/HTML/datastructur.html (143 words)

	ADT
		The structure of data and its values are visible to other parts of the program.
		The data and the operations that manipulate the data are all combined (encapsulated) in one place.
		An abstract data structure is an instance of the ADT.
	condor.depaul.edu /~jpetlick/extra/212/ADT.htm (1084 words)

	Data Structures Index - www.computer-tutorials-online.com (Site not responding. Last check: 2007-10-25)
		data structure and algorithm in java data structure definition data structure exam data structure in c data structure in java data structure interview question data structure lecture note data structure note
		dictionary of algorithm and data structure exercises for data types and data structures faq data structures graph data structure heap data structure hierarchical data structure intro to data structures syllabus introduction to data structure
		tree in data structure type of data structure types of data structures what are the six basic types of data structures
	www.computer-tutorials-online.com /Data-Structures (724 words)

	Abstract Data Types (Site not responding. Last check: 2007-10-25)
		Abstract data types are a way of dealing with specific data structures without losing sight of the problem.
		All too often the way a particular data structure is encoded in software (for example as an array) is scattered throughout the source code.
		The data structure is PRIVATE to the MODULE - that is NOTHING apart from the access routines is allowed to alter or read the data structure.
	www.lightsoft.co.uk /PD/rob/rp_abstrdata.html (359 words)

	AbstractDataTypes < CPP < Globewide Network Academy (Site not responding. Last check: 2007-10-25)
		Within this section we introduce abstract data types as a basic concept for object-orientation and we explore concepts used in the list example of the last section in more detail.
		To sum up, abstraction is the structuring of a nebulous problem into well-defined entities by defining their data and operations.
		Let's summarize this: The separation of data structures and operations and the constraint to only access the data structure via a well-defined interface allows you to choose data structures appropriate for the application environment.
	www.gnacademy.org /twiki/bin/view/CPP/AbstractDataTypes?raw=on (2098 words)

	3 Abstract Data Types (Site not responding. Last check: 2007-10-25)
		Figure 3.2 shows an ADT which consists of an abstract data structure and operations.
		To represent a complex number it is necessary to define the data structure to be used by its ADT.
		Data: This part describes the structure of the data used in the ADT in an informal way.
	www.zib.de /Visual/people/mueller/Course/Tutorial/node4.html (1998 words)

	CTAC 2001 Abstract: An MCST-Based Data Structure for Nearest-Neighbour Matching - Joselito Chua
		Data warehouses and multimedia databases, for example, require efficient methods for finding the closest match to a given query item with respect to a distance function.
		Although the performance of the algorithm has not yet been verified analytically, our experiments on vector quantisation coding of images suggest that the use of the data structure leads to algorithms which can often find a nearest-neighbour in O(log n) distance function calculations.
		The results on our test data are comparable to many of the techniques proposed recently.
	conference.maths.uq.edu.au /ctac2001/abstracts/JoselitoChua1.html (154 words)

	A Data Structure for Artificial Terrain Generation (Abstract) (Site not responding. Last check: 2007-10-25)
		Existing polyhedral data structures are reviewed and shown to be inadequate for maintenance of consistency as polygons are subdivided.
		A new edge-based data structure is presented which provides for the efficient use and consistent storage of spatial data under these conditions.
		The data structure is applicable to polygons of any order and allows neighbouring polygons of different order to be stored and subdivided.
	www.eg.org /EG/CGF/Volume13/Issue1/v13i1pp37-48_abstract.html (148 words)

	Dictionary of Algorithms and Data Structures
		This is a dictionary of algorithms, algorithmic techniques, data structures, archetypical problems, and related definitions.
		We do not include algorithms particular to business data processing, communications, operating systems or distributed algorithms, programming languages, AI, graphics, or numerical analysis: it is tough enough covering "general" algorithms and data structures.
		Data Structures and Algorithms is a wonderful site with illustrations, explanations, analysis, and code taking the student from arrays and lists through trees, graphs, and intractable problems.
	www.nist.gov /dads (594 words)

	The List Abstract Data Structure
		An Abstract Data Type is a type which is defined in terms of the operations possible on it, and not in terms of how it is represented in the computer.
		When programming in any language, keeping to the principal of abstract data types is recommended, but it can be up to the programmer to ensure it.
		Linked lists are generally the most sensible way to implement the abstract data type list, but to show it is not necessary to implement them in this way, and to illustrate the general principle that the implementation of an abstract data type does not affect its behaviour, we give an alternative implementation here.
	www.dcs.qmw.ac.uk /~mmh/ItP/resources/lists.html (2530 words)

	[No title]
		A collection of all the customer-related data needed by services executed by the SEP. The definition and contents of this database are completely under the control of the external user; no SEP specific information is stored in the database.
		An entity used to ensure that data is replicated between the active and standby hosts on the SEP. During normal SEP operation, the two hosts, active and hot standby, are running together.
		Each update to a data field declared in the data model is propagated to the standby host immediately (in real time, over a direct connection between the two Service Logic Execution Environments [SLEEs]) and may also be propagated to a Service Management System (SMS) depending on the replication flag of the data field being updated.
	docs.hp.com /hpux/onlinedocs/2085/temp/oc_glossary_18_June_2002.html (10056 words)

	Method and apparatus for encoding and decoding a data unit whose structure is defined by a description conforming to ... (Site not responding. Last check: 2007-10-25)
		Records corresponding to the label used in an abstract syntax are entered in a database, and decoding or encoding is performed while retrieving records one after another in accordance with their contents.
		An apparatus for generating data for transfer conforming to a prescribed transfer syntax from a data unit, whose structure is defined by a description including a label and an assignment thereto conforming to a prescribed abstract syntax notation, into data for transfer conforming to a prescribed transfer syntax, comprising:
		On the other hand, transferred data received at the communications controller 14 is supplied to the encoder/decoder section 12, and converted in the decoder 16 into an abstract syntax format by referencing the database 11.
	www.freepatentsonline.com /5778360.html (6379 words)

	Object-Oriented Programming using C++ (Site not responding. Last check: 2007-10-25)
		Once a new employee is ``created'' the data structure is filled with actual values: You now have an instance of an abstract employee.
		The principle of hiding the used data structure and to only provide a well-defined interface is known as encapsulation.
		Point 3 of the ADT definition says that for each access to the data structure there must be an operation defined.
	brain.com.pk /~mnk/Spring2001/OOP/6.htm (646 words)

	[No title] (Site not responding. Last check: 2007-10-25)
		A case study of structure and evolution of the ash cloud derived from Unzen pyroclastic flow using radar data.
		Abstract Structure and evolution of the ash cloud derived from Unzen pyroclastic flow at 18:23, May 21, 1993 was studied using a weather-radar data.
		The ejected mass of volcanic-ash particles estimated from radar data reached the maximum 30 minutes after the occurrence of the pyroclastic flow.
	hakone.eri.u-tokyo.ac.jp /kazan/Vol/Vol.41.4/arao.txt (184 words)

	Course Description and Info (Site not responding. Last check: 2007-10-25)
		Abstract data structures such as lists, stacks, queues and trees will be studied as well as programming techniques using recursion and pointers.
		In the first part of the course, which will be primarily in the classroom, several abstract data types will be introduced using problem solving learning techniques.
		You will be presented with the desired properties for abstract data types and will be expected to come up with theoretical solutions.
	www.conncoll.edu /academics/departments/comsci/com212/description.html (767 words)

	Abstract Data Types
		At the level of the tcl language string (together with all the commands which manipulate strings) is an abstract data type, since it defines a type of data which you can operate on using the string interface commands, but you can't tell from the tcl language whether it's null-terminated or length-prepended.
		Array is an abstract data type, since you can access its contents with [array get] or using (), but you can't tinker with the hash collision tables which underly the array representation.
		Lars H: Given a range of implementations of a data structure, the right question is probably rather what the computational complexities of standard operations are for these implementations.
	wiki.tcl.tk /11450 (2992 words)

	MAGNETIC INSPECTION OF METAL STRUCTURE, MECHANICAL PROPERTIES AND THEIR DEGRADATION IN SERVICE
		For estimating the structure and phase composition of products and testing their physicomechanical properties, magnetic methods of nondestructive testing are widely spread in Russia.
		Investigations into the nature of relation between magnetic properties and the structure of cold-and hot-deformed steels after different kinds of annealing have enabled us to recommend that magnetic methods should be applied for evaluating the structural state and mechanical properties of the rolled steel.
		In many cases the changes occurring in the structure and phase composition of steel during hardening and tempering adequately affect its magnetic and mechanical properties, therefore one can use magnetic methods to determine mechanical properties of steel after hardening or tempering.
	www.ndt.net /abstract/wcndt96/data/340.htm (736 words)

	Seminar Abstract (Site not responding. Last check: 2007-10-25)
		Enhancements in data capturing technology have lead to exponential growth in amounts of data being stored in information systems.
		In this presentation, we motivate the need for an incremental data mining approach based on data structure called the item-set tree.
		The proposed approach is shown to be effective for solving problems related to efficiency of handling data updates, accuracy of data mining results, processing input transactions, and answering user queries.
	www.csc.lsu.edu /~seminar/abst.talk.1999.11.19.html (155 words)

	Comp210
		Data definitions -- be able to write them for both concrete and abstract data structures.
		Design templates -- be able to generate one from your data definition, especially if the data definition is that of an abstract data structure.
		Be able to write functions on compound data structures.
	www.owlnet.rice.edu /~comp210/03fall/Exams/exam1n2k.htm (294 words)

	Abstract Data Structure Encyclopedia Article, Definition, History, Biography (Site not responding. Last check: 2007-10-25)
		Abstract Data Structure Encyclopedia Article, Definition, History, Biography
		Looking For abstract data structure - Find abstract data structure and more at Lycos Search.
		Find abstract data structure - Your relevant result is a click away!
	www.karr.net /encyclopedia/Abstract_data_structure (377 words)

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