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Topic: Hierarchical


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In the News (Fri 14 Jun 19)

  
  Hierarchy - Wikipedia, the free encyclopedia
Since hierarchical churches such as the Roman Catholic and Eastern Orthodox churches had tables of organization that were "hierarchical" in the modern sense of the word, the term came to refer to similar organizational methods in more general settings.
Feminists may not take issue with inanimate objects being organized in a hierarchical fashion, but rather with the specific asymmetrical organization of unequal value and power between men and women and, usually, other social hierarchies such as in racism and anti-gay bias.
The pitches and form of tonal music are organized hierarchically, all pitches deriving their importance from their relationship to a tonic key, and secondary themes in other keys are brought back to the tonic in a recapitulation of the primary theme.
en.wikipedia.org /wiki/Hierarchy   (1326 words)

  
 Hierarchical model - Wikipedia, the free encyclopedia
A hierarchical database is a kind of database management system that links records together in a tree data structure such that each record type has only one owner (e.g., an order is owned by only one customer).
Hierarchical structures were widely used in the first mainframe database management systems.
Hierarchical relationships between different types of data can make it very easy to answer some questions, but very difficult to answer others.
en.wikipedia.org /wiki/Hierarchical_database   (238 words)

  
 * Hierarchical - (GIS): Definition   (Site not responding. Last check: 2007-08-07)
Hierarchical: A logical structure that classifies information in a series of steps, starting with broad, simple classifications, and proceeding, in stages, to narrow, precise classifications...
Hierarchical data structures have useful applications within archaeology as they arrange the objects in a database in a related tree of linked parent and child records...
Hierarchical organization - this is how you structure your map -- stuff that is most important needs to stand out three types: 1) Stereogramic (color; brighter stands out,...
www.bestknows.com /gis/hierarchical.html   (492 words)

  
 Hierarchical Clustering - Introduction
In hierarchical clustering the data are not partitioned into a particular cluster in a single step.
Hierarchical Clustering is subdivided into agglomerative methods, which proceed by series of fusions of the n objects into groups, and divisive methods, which separate n objects successively into finer groupings.
Hierarchical clustering may be represented by a two dimensional diagram known as dendrogram which illustrates the fusions or divisions made at each successive stage of analysis.
www.resample.com /xlminer/help/HClst/HClst_intro.htm   (1064 words)

  
 Lecture 14   (Site not responding. Last check: 2007-08-07)
In hierarchical diagrams the convention is that all edges emanating from the same parent node are joined together (as in Figure D.1).
A hierarchical path is a sequence of nodes N1, N2,..., Ni, where N1 is the root of a tree and Ni is a child of NJ-1 for j = 2, 3,..., i.
A PCR type is usually implemented by using the hierarchical sequence, whereas a VPCR type is usually implemented by establishing a pointer (a physical one containing an address, or a logical one containing a key) from a virtual child record to its virtual parent record.
carbon.cudenver.edu /~esbrowde/csc4287/lectures/lecture20.html   (2022 words)

  
 Hierarchical State Machine Design Pattern
Hierarchical state machine design captures the commonality by organizing the states as a hierarchy.
Hierarchical state machine design avoids this problem by recognizing that most states differ in the handling of only a few messages.
When a new hierarchical state is defined, only the state specific handlers need to be specified.
www.eventhelix.com /RealtimeMantra/HierarchicalStateMachine.htm   (1024 words)

  
 Hierarchical
Hierarchical cluster analysis is a statistical method for finding relatively homogeneous clusters of cases based on measured characteristics.
This hierarchical clustering process can be represented as a tree, or dendrogram, where each step in the clustering process is illustrated by a join of the tree; for example:
This example illustrates cluster A and cluster B being combined at the fusion value of x, and the horizontal axis of the tree reflects the fusion values {x} of all the fusions, drawn to scale.
www.clustan.com /hierarchical_cluster_analysis.html   (433 words)

  
 Automatically Utilizing XML's Untapped Semantic Goldmine   (Site not responding. Last check: 2007-08-07)
Hierarchical semantics and their use remain consistent and independent of how the structure is stored and represented.
Hierarchical structures are unambiguous which means they can be automatically navigated and naturally processed hierarchically by a 4GL utilizing the hierarchical semantics in the data structure.
This same hierarchical processing is occurring in standard SQL and its relational processing, but takes on significantly more meaning (semantics) when the entire hierarchical structure is recognized and the result is examined against its hierarchical structure template.
www.dmreview.com /editorial/newsletter_article.cfm?nl=dmdirect&articleId=1019816&issue=20131   (3801 words)

  
 Learning by imitation: A hierarchical approach   (Site not responding. Last check: 2007-08-07)
Hierarchical organizations of control, he showed, are easier than linear ones to repair when they fail, allow the economy of multiple access to common subroutines, and combine efficient local action at low hierarchical levels while maintaining the guidance of an overall structure.
Hierarchical processes are considered to underlay the emergence of symbolic abilities in children, and simple physical relationships between objects, like in-ness, on-ness, between-ness, or together-ness, are often found to lie at the core of this early hierarchical behaviour.
Hierarchical organization is pervasive in the nervous system, and has long been believed to apply to the coding of behaviour.
bbsonline.org /documents/a/00/00/04/39/bbs00000439-00/bbs.byrne.html   (15861 words)

  
 Hierarchical B-splines
A hierarchical B-spline allows local refinement of the surface, as shown in the figure below: patch are added only to the region around the bumps.
A hierarchical B-splines surface provides local refinement and the ability to change the overall shape of the surface without having to re-edit (or re-animate in the case of animated surfaces) the details on that surface.
A hierarchical B-splines surface is created by repeated application of local refinement of an initial B-spline surface (either a plane, cylinder or torus).
www.cs.ubc.ca /nest/imager/contributions/forsey/dragon/hbsplines.html   (574 words)

  
 V&V Practices: Hierarchical Verification   (Site not responding. Last check: 2007-08-07)
Hierarchical system composition is consistent with common interpretations of the “V” model of integration and verification (see the "V" Model Figure).
Certainly, hierarchical verification matches the common-sense notion that attempting to integrate a subsystem is futile if any of its components fail to meet their requirements; the defects of the component surely will cause its parent subsystem to fail as well.
Nonetheless, hierarchical verification may be the most appropriate and predominant approach on many projects, especially for large, distributed development teams and for safety-critical systems where rigorous verification is a necessity.
www.software.org /PUB/VNV/hierverification.asp   (438 words)

  
 26.1 Overview of Hierarchical Routing   (Site not responding. Last check: 2007-08-07)
Hierarchical routing was mainly devised, among other things, to reduce memory requirements of simulations over very large topologies.
Optimum results were found for 3 levels of hierarchy and the current ns implementation supports upto a maximum of 3 levels of hierarchical routing.
To be able to use hierarchical routing for the simulations, we need to define the hierarchy of the topology as well as provide the nodes with hierarchical addressing.
www.isi.edu /nsnam/ns/doc-stable/node310.html   (177 words)

  
 Citations: Hierarchical triangulation for multiresolution surface description - de Floriani, Puppo (ResearchIndex)   (Site not responding. Last check: 2007-08-07)
In [Hop98b] a hierarchical mul tiresolution terrain triangulation method is presented that is based on progressive application of edge collapse and vertexsplit mesh simplification and refinement operations [Hop96]....
Hierarchical triangulations may be based on the regular or irregular subdivision of triangular cells.
Adaptive Hierarchical Triangulation (Scarlatos and Pavlidis 1990) and Hierarchical Delaunay Triangulations (HDTs)
citeseer.ist.psu.edu /context/124258/0   (2402 words)

  
 Hierarchical Hybrid OTDM/WDM Network
The hierarchical optical path architecture consisting of WDM bands and channels has been proposed to be suitable for large-scale WDM backbone networks as shown in Fig.1(a) [1].
One of the aims of using OTDM in the wavelength-band path is possibility to monitor error-free transmission in the physical layer, which is necessary to cut through the high-level nodes.
Key technologies for hierarchical hybrid OTDM/WDM network, that is, 3.24 Tbit/s frequency standardized continuous C- and L-wavelength-band signal generation, 40 Gbit/s OTDM-WDM mutual multiplexing format conversions, and 640 Gbit/s OTDM wavelength-band conversions have been developed.
www.ieee.org /organizations/pubs/newsletters/leos/oct02/soto.html   (1821 words)

  
 What is hierarchical? - A Word Definition From the Webopedia Computer Dictionary
Hierarchical systems are as popular in computer systems as they are in other walks of life.
The most obvious example of a hierarchical system in computers is a file system, in which directories have files and subdirectories beneath them.
Menu-driven programs are also hierarchical, because they contain a root menu at the top of the pyramid and submenus below it.
www.webopedia.com /TERM/h/hierarchical.html   (176 words)

  
 Hierarchical Model   (Site not responding. Last check: 2007-08-07)
The hierarchical model is the oldest of the database models.
The hierarchical model is based on the concept of a tree.
Since the underlying structure of the hierarchical model is the tree, reflexive relations are not allowed.
www.iwu.edu /~sander/CS314/Lectures/Models/Models2.html   (469 words)

  
 Winterschool on Hierarchical Matrices
Hierarchical Matrices can be a useful tool for the treatment of integral operators as well as the solution of linear systems arising in the discretisation of elliptic partial differential equations.
Moreover, the representation of matrices in the hierarchical matrix format is suitable for the efficient solution of matrix equations.
The aim of this winterschool is to teach the necessary theoretical foundations for hierarchical matrices, but most of all the efficient implementation of the algorithms.
www.mis.mpg.de /scicomp/winterschool   (130 words)

  
 CRL Newsletter 10-3
Second, the abstract condition showed that contrary to the predictions of the hierarchical model, L2 to L1 translations took longer than L1 to L2 translations, thus suggesting that L2 to L1 translations are less sensitive to lexical processes and perhaps more sensitive to conceptual factors.
Regarding the hierarchical model, it could be that this model is a language proficiency model and it is unable to take language dominance as a major factor in describing bilingual memory structure.
It is important to point out that the present version (R-2) of the hierarchical model makes the same assumptions as Figure 1 regarding the links between the MDL and LDL lexicons and the lexical links to the conceptual store.
crl.ucsd.edu /newsletter/10-3   (2120 words)

  
 Hierarchical keywords
Several hierarchical levels may exist with a keyword and associated value at the lowest level.
Such keywords are mapped to MIDAS descriptors with names starting with the domain, then all levels and ending with the keyword where the components are separated with the full stop character ('.').
The hierarchical structure provides a convenient and clear way to separate information concerning different subsystems.
www.eso.org /projects/esomidas/doc/user/98NOV/vola/node116.html   (214 words)

  
 Iterative Hierarchical Redistribution
Merging combines two sibling clusters in a hierarchical clustering if to do so increases the quality of the partition of which the clusters are members; splitting can remove a cluster and promote its children to the next higher partition; a distinct promotion operator can promote an individual cluster to the next higher level.
In contrast, hierarchical redistribution resorts each cluster, regardless of its initial location in the tree, through the root of the entire tree, thus more vigorously pursuing migration and more globally evaluating the merits of such moves.
In contrast, hierarchical redistribution is motivated by a philosophy that sorting (or some other method) can produce a tentative clustering over all the data quickly, followed by iterative optimization procedures in background that revise the clustering intermittently.
www.cs.washington.edu /research/jair/volume4/fisher96a-html/node9.html   (1014 words)

  
 Hierarchical Linear Models (1997)
Subject: More on Hierarchical Linear Models--a proper subset of multilevel models The well-deserved success of Bryk and Raudenbush's book and computer program have installed the acronym HLM in many people's statistical vocabulary, and sometimes in their toolbox.
Hierarchical, yes--linear, no. Some computer programs only fit linear models, but that should not obscure the more general utility of the multilevel approach.
Diane Hierarchical linear models (HLM) incorporate data from multiple levels in an attempt to determine the impact of individual and grouping factors upon some individual level outcome.
www.pitt.edu /~wpilib/statfaq/97refhlm.html   (586 words)

  
 Augmenting thesaurus relationships: Tudhope et al.: JoDI   (Site not responding. Last check: 2007-08-07)
As we discuss in section 5, this relationship is a subtype of the hierarchical thesaurus relationship.
Whole-Part (partitive): this is a hierarchical relationship between concepts of the same type, where 'the name of the part implies the name of the possessing whole in any context'.
If the three standard thesaurus relationships formed the top level of a hierarchical structure then any such new applications would retain compatibility with the large number of existing thesauri (and indexed collections) where it is infeasible to augment the core relationships.
jodi.ecs.soton.ac.uk /Articles/v01/i08/Tudhope   (8235 words)

  
 RODEO: Hierarchical Context   (Site not responding. Last check: 2007-08-07)
In the hierarchical model, an additional level of indirection is introduced, so that the names visible to the user may (but need not) be different from the PSCAN names.
The hierarchical name spaces are built out of the contents of the mapping files.
The hierarchical name coincides with the pseudo-hierarchical name, except when it is shown in the circuit parameters control block.
pavel.physics.sunysb.edu /RSFQ/Research/PSCAN/hier.html   (776 words)

  
 Hierarchical   (Site not responding. Last check: 2007-08-07)
Hierarchical Menus are created the same way as any other menus; either by using GetMenu or using NewMenu.
Hierarchical Menu will only be displayed when the menu item it attached is highlighted.
Thus, one Hierarchical Menu controls all of the standard Text editing menus that are appearing in more and more programs.
www.mactech.com:16080 /articles/mactech/Vol.03/03.08/Hierarchical   (3006 words)

  
 Hierarchical Geographic Names in the MARC 21 Bibliographic Format
Participants also decided that the portion of Proposal 2004-07 concerning the definition of a subfield $2 and the expansion of subfields' definitions and changes to their repeatability in both the 662 and 752 fields should be covered in a new proposal.
There are a number of hierarchical geographic vocabularies/thesauri that some users might use, depending on the type/level of information desired in the record.
These examples demonstrate that the levels of hierarchical specificity in vocabularies/thesauri varies, ranging from a broad level (the World) to a much smaller level (a neighborhood or subway station).
www.loc.gov /marc/marbi/2005/2005-04R.html   (1720 words)

  
 Citations: Hierarchical triangulation for multiresolution surface description - Floriani, Puppo (ResearchIndex)   (Site not responding. Last check: 2007-08-07)
An Hierarchical Delaunay Triangulation is a matching tree structure that supports an explicit multiresolution representation of irregularly distributed terrain data.
A hierarchical triangulation (HT) is a data structure containing different triangulations of the same terrain, where from top to bottom of the hierarchy the resolution increases.
The concept of vertex based hierarchies is described in detail in Hoppe s papers [8] and [9] In numerics, it is essential to ensure stability of a sequence of triangulations or a hierarchical triangulation, i.e.
citeseer.ist.psu.edu /context/449289/34491   (1586 words)

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