Common Data Representation

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Topic: Common Data Representation

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	Data Compression - Encyclopedia.WorldSearch
		In computer science, data compression or source coding is the process of encoding information using fewer bits (or other information-bearing units) than a more obvious representation would use, thanks to specific encoding schemes.
		The idea of data compression is deeply connected with statistical inference and particularly with the maximum likelihood principle.
		As is the case with any form of communication, compressed data communication only works when both the sender and receiver of the information understand the encoding scheme.
	encyclopedia.worldsearch.com /data_compression.htm (1370 words)

	DX Data File Formats
		The headers describe one or more DX objects, and the data section is a text or binary representation of the data.
		This DX file format is very extensive, and can represent almost any type of data because of this complexity, there are too many possible examples to present here.
		CDF Homepage at the National Space Science Data Center - This site contains all of the latest disrtibutions for the CDF Libraries, and other information relating to the CDF data format.
	www.cs.wpi.edu /Research/DataExplorer/tutorial/data.html (463 words)

	UNC Scientific Computation Club
		Another simple data format is the machine's native binary representation.
		The Hierarchical Data Format has been developed by the National Center for Supercomputing Applications at the University of Illinois at Urbana-Champaign.
		It is useful to define data formats that do not depend on the characteristics of a specific computer.
	www.amath.unc.edu /SCC/dataformats.html (143 words)

	Cover Pages: Incident Object Description and Exchange Format (IODEF)
		Such event data is commonly used by a CSIRT as the basis for an incident report or investigation which is represented by the IODEF.
		Since it merely introduces another representation for existing data, the underlying storage mechanism and schema of the IHS need not be changed to accommodate the IODEF.
		The data model is described in Section 3, and the implementation considerations are covered in Sections 4 through 6, and 9.
	xml.coverpages.org /iodef.html (1295 words)

	COM1391
		Understand several standard representations for fundamental data structures and their tradeoffs with respect to the efficiency of common operations and transformations.
		Examines methods and techniques for representation, organization, transformation, and security of data. Studies fundamental structures such as sets, graphs, and finite functions. Examples focus on large objects such as images, video, and sound, and on large systems such as file systems, data bases, and networks.
		Understand at least one standard representation for several different kinds of high-volume data.
	www.ccs.neu.edu /teaching/Curriculum/UndergraduateGuide/Courses/com1391/CourseDescription.html (245 words)

	Techquila - Conclusions
		As explained in the analysis for that model, API-1 is not really suitable for representing a topic map as it is based on an programming model originally developed for the representation of an ordered tree data structure rather than the graph structure of a topic map.
		In practice, we believe that the real reasons for choosing one API over another are not so much the size and representational complexity issues as they are an issue of having a basic data model suitable for the representation of a topic map and convergence with XTM syntax to flatten the learning curve.
		A purely statistical comparison such as this is somewhat inconclusive, especially with such a limited set of use cases to determine the Representation Complexity index, and with no historical data to more accurately weight the method and class counts.
	www.techquila.com /pmodel_6.html (725 words)

	Swing model filtering
		Model filtering can modify the representation of data within a model, and can also change the apparent number and order of the data it is encapsulating.
		A delegate is an object that implements a common Java interface, and that is associated with a particular component.
		This data may or may not be another model filter; the behavior is the same in either case.
	www-106.ibm.com /developerworks/java/library/j-filters (725 words)

	UBC Database Group Website
		While previous techniques (e.g., SVD, DFT and DWT) choose a common representation for all the items in the database that minimizes the global reconstruction error, APCA approximates each time series by a set of constant value segments of varying lengths such that their individual reconstruction errors are minimal.
		Since a tabular representation with additional index structure is neither as compact as it could be nor efficient to maintain, secondly, we propose a more efficient data structure called QC-tree to store and index quotient cube.
		Quotient cube was proposed as a summary structure for a data cube that retains its semantics.
	www.cs.ubc.ca /nest/dbsl/dbTalks/Fall2003.html (725 words)

	Integer (computer science) - Wikipedia, the free encyclopedia
		The most common representation of a positive integer is a string of bits, using the binary numeral system.
		The value of a datum with an integral type is the mathematical integer that it corresponds to.
		The width or precision of an integral type is the number of bits in its representation.
	en.wikipedia.org /wiki/Integral_data_type (1028 words)

	Press Release -- ESRI Announces ArcGIS Pipeline Data Model
		The model is a first step toward broad industry consensus on a common conceptual data model for the pipeline industry.
		Because data modeling represents a common, expensive part of every geographic information system (GIS) implementation, ESRI makes these models available to help lower the cost of implementing enterprisewide GIS technology and to jump-start projects with a standard, flexible model.
		Both a conceptual (analysis diagram) and logical (computer automated systems engineering tool unified modeling language representation) data model have been developed.
	www.esri.com /news/releases/02_3qtr/arcgispipeline.html (604 words)

	WIL: A Compiler Intermediate Language with Explicit Support for Representations
		For example, consider the case of the representation of an array of complex numbers, a common data type in numerical computations (figure 2).
		This representation can be either partially or fully abstract, which allows the ability to defer decisions about the concrete bit layout of some or all of the value’s contents to later stages of compilation.
		Representations for generic Objects and 2Dpoints are named, and each value in the program is annotated with a representation.
	www.cs.washington.edu /homes/tapan/projects/WIL (8206 words)

	GS-7.0.html
		When working with 16-bits linear, it is possible to maintain the full printing density range, although the common practice is to put reference white at the maximum code value of 65535.
		Conversion of logarithmic printing density to a linear representation requires both a scaling and an anti-log operation.
		A reasonable approximation for the transformation described above can be implemented simply by applying a gamma pre-correction of 0.35 to the clipped and scaled printing density data.
	www.cinesite.com /CineonTech/GrayScale/Sections/GS-7.0.html (917 words)

	Internal representation of boundary models
		The most common representation technique is the winged-edge[
		The internal representation of boundary models can be based on faces, on vertices, or on edges.
		In this representation, a solid consists of a list of faces, a list of edges and a list of vertices.
	www.ipf.tuwien.ac.at /fr/buildings/diss/node33.html (404 words)

	Amazon.com: Core Java Data Objects: Books: Sameer Tyagi,Michael Vorburger,Keiron McCammon,Heiko Bobzin,Keiron McCannon
		Irrespective of the technique and the varying degree of complexity involved, each of these approaches has one common conceptual characteristic: the dependence on the developer to extract state information from the objects when it needs to be saved and re-create that state in the object representation when needed by the application.
		Java Data Objects is not just another specification that has been put together by the community process-It is a new standard for persistence in Java applications.
		Java Data Objects (JDO) is an alternative to JDBC that allows you to treat rows from a database as Java objects.
	www.amazon.com /exec/obidos/tg/detail/-/0131407317?v=glance (3302 words)

	City & County of Honolulu: Department of Planning and Permitting Web Site
		The GIS data or cartographic digital files are not a legal representation of any of the features in which it depicts, and disclaims any assumption of the legal status of which it represents.
		All applicable common law and statutory rights in the GIS data, including, but not limited to, rights in copyright, shall and will remain the property of the City.
		The GIS data are proprietary to the City, and title to this information remains in the City.
	gis.hicentral.com (3302 words)

	Intermediate
		Intermediate representation In program, and from which part or all of the output data of the program is constructed in t...
		Common Intermediate Format CIF (Common Intermediate Format) is used to standardize the horizontal and vertical resolutio...
		Intermediate Egret Egretta intermedia (1827 The Intermediate Egret (Egretta intermedia or Ardea intermedia) is a medium-...
	www.brainyencyclopedia.com /topics/intermediate.html (393 words)

	Music and Artificial Intelligence
		In practice, however, primarily for reasons of ease of measurement and computer representation, one of the most common ways the designers of cognitive models measure music is to use a MIDI controller to capture data measuring performance gesture.
		If we were to translate these representations back into notation and perform them, their phenomenological similarity to the original sound would probably increase in direct proportion to the detail of the original measurement.
		The fragmenting and reordering can be applied to the representation of the sound (the music in its traditionally notated form) or to the sound itself (with "splicing" of digital recordings).
	music.arts.uci.edu /dobrian/CD.music.ai.htm (393 words)

	Learning-Theoretic Methods in Lossy Data Compression
		Thus lossy compression shares this common feature with other nonparametric learning scenarios: some unknown system generates data and the best action to be taken must be learned from these data.
		Abstract: The goal of lossy data compression is to give a compact representation of data (using as few bits as possible) that still results in an acceptable (but not necessarily perfect) reproduction.
		In most practical situations, one has only limited information about the source generating the data, and an adequate (probabilistic) description of it must be learned from the data itself in order to choose a suitable compression algorithm.
	www.pims.math.ca /industrial/2001/caims/Linder.html (196 words)

	Dublin Core Element Set, Version 1.1 - Reference Description
		The Definition attribute captures the semantic concept and the Datatype and Comment attributes capture the data representation.
		Fortunately, six of the above ten attributes are common to all the Dublin Core elements.
		ISO11179] standard for the description of data elements.
	dublincore.org /documents/1999/07/02/dces (1329 words)

	CSC-148, Spring 98, Assignment 2
		The other common representation is the adjacency list representation, which consists of a list of the vertices, and associated with each vertex a list of all the vertices which are adjacent to it.
		Although the implementation details will be hidden by use of abstract data types, at the core will be an adjacency list representation of the graph.
		The adjacency list representation of this same graph looks like this.
	www.cs.utoronto.ca /~mitchell/csc148/s98/a2/handout.html (1329 words)

	Marlos Viana's Personal Home Page
		We will discover how symmetry provides a common link between problems in molecular biology and classical physics, with the utilization of simple elements of algebra, probability and data analysis.
		Canonical projections for the regular representation of the Klein 4-group Worksheet
		The seminar will discuss the presence of symmetry in nature and its representation in scientific investigation, through specific applications.
	www.uic.edu /labs/crc/viana/TMPc7ohh3h5c1.htm (295 words)

	Unit 1 c The Concept of Ideal Weight
		BMI is perhaps the most common criterion used for determining "healthy" weight and is defined as weight in pounds multiplied by 700, then divided by height in inches squared.
		Dublin reviewed insurance data and found that policy holders who weighed the least had the lowest mortality.
		Height/weight tables have influenced conceptualization of weight, overweight, and obesity since their development by Louis Dublin in his work for Metropolitan Life during the early 1940's.
	www.jonrobison.net /FDNH/unit1c_a.htm (295 words)

	Cyrus' Blather : The future of the C# language
		Even when selecting the data, the most common operation I do is probably selecting the direct children of a particular node.
		Inserting and removing nodes in the usual representation requires only updating that record (and perhaps fixing up the sort orders of other records with the same parent id), but in a nested set representation it requires modifyng the lft and rgt columns of potentially the entire table.
		In the adjacency list representation, this is an easy "select * from page where parent_id = @whatever".
	blogs.msdn.com /cyrusn/archive/2005/07/13/438702.aspx (295 words)

	ESSENTIAL FACTS WEBLOG
		The Systems Biology Markup Language (SBML) has become the most widely-used common representation format for storing qualitative and quantitative models of biochemical reaction networks.
		Annual market data and projections are presented in units and dollars and growth rates for the years 1999 through 2005.
		It is natural for researchers to want to use the same computational models with different software tools.
	blog.essential-facts.com (295 words)

	Concept Paper: Premarketing Risk Assessment
		If there is a range of doses studied, administered dose is the most common way to assess dose-response, but it may be useful to look at rate by weight- or body surface area-adjusted dose, especially if most patients are given the same dose regardless of weight or size.
		Analyses of event rate and severity by dose should be conducted for clinically important adverse events that may be drug-related or that would be expected based on pharmacologic class or pre-clinical data.
		For chronic use products that are novel in mechanism or class, we believe the 1500 patients should include only those who have been exposed to the product in multiple dose studies of four or more weeks' duration, as many adverse events of concern (e.g., hepatotoxicity, hematologic events) do not usually appear with shorter exposure.
	www.fda.gov /cder/meeting/riskManageI.htm (295 words)

	GFF CD-ROM/Internet Edition: Index
		BUFR (Binary Universal Form for the Representation of Meteorological Data), Overview
		This page is taken from the Encyclopedia of Graphics File Formats and is licensed by O'Reilly under the Creative Common/Attribution license.
		AutoCAD DXF (Data Exchange Format), Reading a Graphics File Header, Vector Formats, Vector File Size Issues, Overview, Sources of Vector Format Files
	www.fileformat.info /mirror/egff/bookidx.htm (295 words)

	MODEL BASED CONTROL OF HIGH CONSISTENCY
		These composite variables are a mathematical representation of the independent properties which underlie the raw data.
		This mode is used to remove variation in the data which are not common to multiple variables.
		In the first stage, process data are used to calculate a theoretical consistency using mass and energy balances.
	www.pacsim.com /Articles/Mod_base/MOD_BASE.HTM (3169 words)

	Start-up Profits From E-Legal Activities - Computerworld
		Although legal departments have wanted to move to electronic billing for years, there isn't a common document format used throughout the industry that will ease the process, says Eric M. Elfman, president and CEO of Houston-based DataCert.
		All DataCert needs is a digital representation from which to scrape data; it will generate a translation scheme to convert from the outside counsel's file format to the client's format.
		DataCert has integrated its software with the management systems most commonly used by legal departments, says Elfman.
	www.computerworld.com /printthis/2001/0,4814,60201,00.html (3169 words)

	DVB Glosarry - Sat Industry Forums
		UNO-CDR Universal Networked Object - Common Data Representation
		SimulCrypt A process that facilitates using several Conditional Access (CA) systems in parallel, in conjunction with the DVB common scrambling algorithm, to control access to pay-TV services.
		DVB-Cook A guideline for the use of DVB specifications and standards (TR 101 200)
	sat-industry.net /forums/showthread.php?t=849 (640 words)

	CodeFutures launches FireStorm/DAO
		According to Andy Grove, CodeFutures CTO, FireStorm/DAO ensures a consistent approach to the common task of database access in large organizations with multiple development teams or where there are multiple development projects.
		Rather than attempting to map any Java code to any database schema using complex rules, FireStorm generates Java source code that is a one-to-one representation of a relational database schema.
		FireStorm imports database schema definitions from SQL scripts or from live databases via JDBC and then generates a complete data-access tier based on the Data Access Object (DAO) design pattern.
	wvwv.programmersheaven.com /d/click.aspx?ID=N3031 (640 words)

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