enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Hierarchical database model - Wikipedia

    en.wikipedia.org/wiki/Hierarchical_database_model

    An example is a "customer" record that has links to that customer's "orders", which in turn link to "line_items". The hierarchical database model mandates that each child record has only one parent, whereas each parent record can have zero or more child records. The network model extends the hierarchical by allowing multiple parents and ...

  3. Bayesian hierarchical modeling - Wikipedia

    en.wikipedia.org/wiki/Bayesian_hierarchical_modeling

    Bayesian hierarchical modelling is a statistical model written in multiple levels (hierarchical form) that estimates the parameters of the posterior distribution using the Bayesian method. [1] The sub-models combine to form the hierarchical model, and Bayes' theorem is used to integrate them with the observed data and account for all the ...

  4. Multilevel model - Wikipedia

    en.wikipedia.org/wiki/Multilevel_model

    Multilevel models are a subclass of hierarchical Bayesian models, which are general models with multiple levels of random variables and arbitrary relationships among the different variables. Multilevel analysis has been extended to include multilevel structural equation modeling , multilevel latent class modeling , and other more general models.

  5. Hierarchical network model - Wikipedia

    en.wikipedia.org/wiki/Hierarchical_network_model

    The hierarchical network model is part of the scale-free model family sharing their main property of having proportionally more hubs among the nodes than by random generation; however, it significantly differs from the other similar models (Barabási–Albert, Watts–Strogatz) in the distribution of the nodes' clustering coefficients: as other models would predict a constant clustering ...

  6. Bayesian network - Wikipedia

    en.wikipedia.org/wiki/Bayesian_network

    This is the simplest example of a hierarchical Bayes model. The process may be repeated; for example, the parameters may depend in turn on additional parameters , which require their own prior. Eventually the process must terminate, with priors that do not depend on unmentioned parameters.

  7. DIKW pyramid - Wikipedia

    en.wikipedia.org/wiki/DIKW_Pyramid

    DIKW is a hierarchical model often depicted as a pyramid, sometimes as a chain, with data at its base and wisdom at its apex (or chain-beginning and -end). [ 1 ] [ 14 ] [ 4 ] [ 15 ] Both Zeleny and Ackoff have been credited with originating the pyramid representation, [ 14 ] although neither used a pyramid to present their ideas.

  8. Model of hierarchical complexity - Wikipedia

    en.wikipedia.org/wiki/Model_of_hierarchical...

    The model of hierarchical complexity (MHC) is a formal theory and a mathematical psychology framework for scoring how complex a behavior is. [4] Developed by Michael Lamport Commons and colleagues, [3] it quantifies the order of hierarchical complexity of a task based on mathematical principles of how the information is organized, [5] in terms of information science.

  9. Database model - Wikipedia

    en.wikipedia.org/wiki/Database_model

    A database model is a type of data model that determines the logical structure of a database. It fundamentally determines in which manner data can be stored, organized and manipulated. The most popular example of a database model is the relational model, which uses a table-based format.