
	Where results make sense

Topic: Hierarchical model

Related Topics

Relational DBMS

Database

Relational model

Special Air Service

History of Vietnam

1300

In the News (Mon 7 Dec 09)

Northern Trust

Marvin Harrison

Peter Chernin

Gary Locke

Match Play

Penelope Cruz

Mickey Rourke

AR Rahman

Danny Boyle

Hugh Jackman

	Hierarchical model - Wikipedia, the free encyclopedia
		In a hierarchical data model, data is organized into a tree-like structure in such a way that it cannot have too many relationships.
		Hierarchical structures were widely used in the first mainframe database management systems.
		While the hierarchical model is rare in modern databases, it is common in many other means of storing information, ranging from filesystems to the Windows registry to XML documents.
	en.wikipedia.org /wiki/Hierarchical_model (378 words)

	Relational model - Wikipedia, the free encyclopedia
		The relational model was invented by E.F. (Ted) Codd as a general model of data, and subsequently maintained and developed by Chris Date and Hugh Darwen among others.
		The relational model depends on the law of excluded middle under which anything that is not true is false and anything that is not false is true; it also requires every tuple in a relation body to have a value for every attribute of that relation.
		Usually in the relational model a database schema is said to consist of a set of relation names, the headers that are associated with these names and the constraints that should hold for every instance of the database schema.
	en.wikipedia.org /wiki/Relational_model (2948 words)

	Relational model article - Relational model Database management systems Hierarchical model Network model - ... (Site not responding. Last check: 2007-11-03)
		After it was defined, formal models were made to describe hierarchical databases (the hierarchical model,) and network databases (the network model).
		The relational model was invented by Dr. Ted Codd and subsequently maintained and developed by Chris Date and Hugh Darwen, as a general model of data.
		In the mathematical model (unlike SQL), reasoning about such data is done in two-valued predicate logic (that is, without a null value), meaning there are two possible evaluations for each proposition: either true or false.
	www.what-means.com /encyclopedia/Relational_model (1176 words)

	Network model - Wikipedia, the free encyclopedia
		The network model is a database model conceived as flexible way of representing objects and their relationships.
		Where the hierarchical model structures data as a tree of records, with each record having one parent record and many children, the network model allows each record to have multiple parent and child records, forming a lattice structure.
		Firstly, IBM chose to stick to the hierarchical model in their established products such as IMS and DL/I. Secondly, it was eventually displaced by the relational model, which offered a higher-level, more declarative interface.
	en.wikipedia.org /wiki/Network_model (347 words)

	Birats: a bivariate Normal hierarchical model
		This is the model adopted by gelfand:etal:90 for this data, and assumes a priori that the intercept and slope parameters for each rat are correlated.
		In general we would advise using the multivariate normal model for multiple random effects, particularly when interest lies in functions of the population coefficients, such as predictions.
		However, we have found these models have very poor convergence properties: initial poor estimates lead to the variance-covariance matrix of the observation vector having very large entries, and once this has occurred the sampler tends to `stick' with these values since the fitted curves have little incentive to approach the data.
	www.mrc-bsu.cam.ac.uk /bugs/documentation/exampVol2/node10.html (675 words)

	Database Models: Hierarcical, Network, Relational, Object-Oriented, Semistructured, Associative and Context. (Site not responding. Last check: 2007-11-03)
		These record types are the equivalent of tables in the relational model, and with the individual records being the equivalent of rows.
		In semistructured data model, the information that is normally associated with a schema is contained within the data, which is sometimes called ``self-describing''.
		Such databases subsume the modelling power of recent extensions of flat relational databases, to nested databases which allow the nesting (or encapsulation) of entities, and to object databases which, in addition, allow cyclic references between objects.
	unixspace.com /context/databases.html (2376 words)

	Database (Site not responding. Last check: 2007-11-03)
		The flat (or table) model consists of a single, two-dimensional array of data elements, where all members of a given column are assumed to be similar values, and all members of a row are assumed to be related to one another.
		This model is the basis of the spreadsheet.
		A particular subset of the network model, the hierarchical model, limits the relationships to a tree structure, instead of the more general directed graph structure implied by the full network model.
	www.freedownloadsoft.com /info/database.html (1785 words)

	Hierarchical model selection (Site not responding. Last check: 2007-11-03)
		The segmentation tends to be consistent for at least several frames due to local constraints in the model (equations 12-16), but not consistent enough to lead directly to foreground-background segmentation.
		The result is based on the hierarchical model switching whose details are given in Section 4.
		The mask defining the shape, for example, is allowed to switch between an MRF model, a global blob shape model, a global per-pixel model, a model conditioned on the previous frame, and a model conditioned on the segmentation variables g (illustrated in the previous video).
	research.microsoft.com /users/jojic/mm.html (366 words)

	HMVC: The layered pattern for developing strong client tiers
		The controller uses the model to coordinate the effects of user events on the view with the model; it also caters to logic flow.
		Typically, the model receives a delegated data-service request from the controller, fetches the data, and notifies the associated view of the availability of fresh data.
		However, in most thin-client architectures, the role of the model tends to be that of a data conduit that hides the complexity of data fetching and decouples the rest of the client tier from server-side data formats.
	www.javaworld.com /javaworld/jw-07-2000/jw-0721-hmvc_p.html (2873 words)

	A hierarchical model for ageing
		We present a one-dimensional model for diffusion on a hierarchical tree structure.
		It is shown numerically that this model exhibits ageing phenomena although no disorder is present.
		The origin of ageing in this model is therefore the hierarchical structure of phase space.
	stacks.iop.org /0305-4470/30/L393 (204 words)

	Hierarchical GRF Model (Site not responding. Last check: 2007-11-03)
		A hierarchical two-level Gibbs model has been proposed to represent both noise-contaminated and textured images [Derin and Cole 1986; Derin and Elliott 1987].
		Various hierarchical Gibbs models result according to what are chosen for the regions and for the filling-in's, respectively.
		For example, each region may be filled in by an auto-normal texture [Simchony and Chellappa 1988; Won and Derin 1992] or an auto-binomial texture [Hu and Fahmy 1987]; the MLL for the region formation may be substituted by another appropriate MRF.
	www.cs.cornell.edu /~rdz/664/MRF_Book/Chapter_1/node19.html (247 words)

	Hierarchical Model of IM and EM (Site not responding. Last check: 2007-11-03)
		Vallerand, R. Toward a hierarchical model of intrinsic and extrinsic motivation.
		A review using the hierarchical model of intrinsic and extrinsic motivation.
		Vallerand, R. J., and Ratelle, C. Intrinsic and extrinsic motivation: A hierarchical model.
	www.uiowa.edu /~c07p075a/class2/Theories/hierarchicalmodelofimandem.htm (77 words)

	Hierarchical Model-Based Diagnosis - Mozetic (ResearchIndex)
		In order to increase the efficiency of model-based diagnosis, we propose a model representation at several levels of detail, and define three refinement (abstraction) operators.
		We specify formal conditions that have to be satisfied by the...
		The Challenge of Deep Models, Inference Structures, and Abstract..
	citeseer.ist.psu.edu /221872.html (541 words)

	Publications and Technical Reports
		1999-1 Criticism of a hierarchical model using Bayes factors.
		1996-2 Bayesian probit modeling of binary repeated measures data with an application to a cross-over trial (with Sid Chib).
		1995-1 Bayesian residual analysis for binary response regression models (with Sid Chib).
	bayes.bgsu.edu /papers/papers.html (1088 words)

	Database model: Facts and details from Encyclopedia Topic (Site not responding. Last check: 2007-11-03)
		A database model is a theory or specification describing how a database is structured and used.
		Hierarchical model[For more facts and a topic of this subject, click this link]
		The network model is a database model conceived as a more flexible alternative to the hierarchical model....
	www.absoluteastronomy.com /encyclopedia/d/da/database_model.htm (89 words)

	CCNA Study Guide: Internetworking: Cisco Hierarchical Model
		Cisco has defined a hierarchical model known as the hierarchical internetworking model.
		This model simplifies the task of building a reliable, scalable, and less expensive hierarchical internetwork because rather than focusing on packet construction, it focuses on the three functional areas, or layers, of your network:
		Behavior prediction: When planning or managing a network, the model allows you determine what will happen to the network when new stresses are placed on it.
	www.semsim.com /ccna/ccna-study-guide.asp?ain=57 (477 words)

	[No title] (Site not responding. Last check: 2007-11-03)
		In the hierarchical database model, a database consists of a collection of occurrences of a single type of tree.
		In this model, each named node or segment contains one or mode named fields or data items that represent attributes describing an entity.
		The entire tree may be a description of a single entity, or different segments within a tree may be used to represent different, but related, entities.
	www.iit.edu /~abdemet/INSY328hrm.html (256 words)

	Citebase - Inverted Hierarchical Model of Neutrino Masses Revisited
		In this paper we propose a kind of natural selection which can discriminate the three possible neutrino mass models, namely the degenerate, inverted hierarchical and normal hierarchical models, using the framework of Type II seesaw formula.
		We show that the inverted hierarchical model with opposite CP parity in the first two mass eigenvalues, has enormous flexibility to lower the solar mixing angle from its tri-bimaximal mixing, without sacrificing the conditions of maximal atmospheric mixing angle and exact zero reactor angle.
		We reconsider the possibility that the masses of the three light neutrinos of the Standard Model might be almost degenerate and close to the present upper limits from Tritium beta decay and cosmology.
	citebase.eprints.org /cgi-bin/citations?id=oai:arXiv.org:hep-ph/0306252 (1179 words)

	Hierarchical Model of Turbulence
		The hierarchical model consists of vortices of different sizes that move in the fluid.
		We call it a model because we have so far not been able to find an exact representation of the hydrodynamical equations in such a basis.
		The code can be improved considerably by embedding the hierarchical tree of vortices differently into the Connection Machine.
	www.pdc.kth.se /info/reports/1992/section2_2_5.html (695 words)

	An MMPP-Based Hierarchical Model of Internet Traffic (ResearchIndex)
		Using the notion of sessions and flows, the proposed MMPP model mimics the real hierarchical behavior of the packet generation process by Internet users.
		Thanks to its hierarchical structure, the proposed model is both simple and intuitive: it allows the generation of traffic with desired characteristics by...
		98 A multifractal Wavelet Model with application to data traffi..
	citeseer.ist.psu.edu /681411.html (451 words)

	MC MCSE - The Cisco Three-Layered Hierarchical Model
		A collision domain describes a portion of an Ethernet network at layer 1 of the OSI model where any communication sent by a node can be sensed by any other node on the network.
		This is different from a broadcast domain which describes any part of a network at layer 2 or 3 of the OSI model where a node can broadcast to any node on the network.
		Enable MAC address filtering: It is possible to program a switch to allow only certain systems to access the connected LANs.
	www.mcmcse.com /cisco/guides/hierarchical_model.shtml (1025 words)

	Pump: conjugate gamma-Poisson hierarchical model (Site not responding. Last check: 2007-11-03)
		Next: Seeds: random effects logistic Up: BUGS 0.5 Examples Volume Previous: Rats: Normal hierarchical models
		george:makov:smith:93 discuss Bayesian analysis of hierarchical models where the conjugate prior is adopted at the first level, but for any given prior distribution of the hyperparameters, the joint posterior is not of closed form.
		Figure 2 shows the graph corresponding to the above model, and the associated
	www.stat.ufl.edu /system/man/BUGS/eg05vol1/node4.html (177 words)

	Cisco Hierarchical Model
		Networking Topics > Miscellaneous > Cisco Hierarchical Model
		Cisco have devised a logical network model, which attempts to help you design and build a scalable and reliable hierarchical network.
		It divides the specific functions of a network into three distinct layers, helping you avoid common pitfalls when designing or upgrading your network.
	internetworktraining.com /kbase/.../cisco_hierarchical_model.html (275 words)

	Home Page of Konrad Paul Körding
		Learning a hierarchical model of cortical function from natural stimuli
		Oldenburg, 2003,Sparse Coding of speech data predicts properties of the auditory system
		GATSBY, London, 2003, Learning hierarchical representations from videos of natural scenes
	www.neuroinf.com /pubs (864 words)

Try your search on: Qwika (all wikis)