Results 31 to 40 of about 1,397,188 (342)

Grand Canonical Ensembles of Sparse Networks and Bayesian Inference

open access: yesEntropy, 2022
Maximum entropy network ensembles have been very successful in modelling sparse network topologies and in solving challenging inference problems. However the sparse maximum entropy network models proposed so far have fixed number of nodes and are ...
Ginestra Bianconi
doaj   +1 more source

Decays in Quantum Hierarchical Models

open access: yes, 2007
We study the dynamics of a simple model for quantum decay, where a single state is coupled to a set of discrete states, the pseudo continuum, each coupled to a real continuum of states.
Ariel Amir   +5 more
core   +1 more source

Recursive image sequence segmentation by hierarchical models [PDF]

open access: yes, 1994
This paper addresses the problem of image sequence segmentation. A technique using a sequence model based on compound random fields is presented. This technique is recursive in the sense that frames are processed in the same cadency as they are produced.
Gasull Llampallas, Antoni   +2 more
core   +1 more source

Hierarchical Models in the Brain

open access: yesPLoS Computational Biology, 2008
This paper describes a general model that subsumes many parametric models for continuous data. The model comprises hidden layers of state-space or dynamic causal models, arranged so that the output of one provides input to another. The ensuing hierarchy furnishes a model for many types of data, of arbitrary complexity.
openaire   +5 more sources

Hierarchical models of rigidity percolation

open access: yes, 2009
We introduce models of generic rigidity percolation in two dimensions on hierarchical networks, and solve them exactly by means of a renormalization transformation.
J. Barré, M. Chubynsky, M. F. Thorpe
core   +1 more source

Analysis of criteria system model for construction contract evaluation

open access: yesTechnological and Economic Development of Economy, 2007
A number of multicriteria decisions must be made during construction investment processes. A number of support systems for multicriteria tasks of construction investment processes are available. Part of them is reviewed in this article.
Sigitas Mitkus, Eva Trinkūnienė
doaj   +1 more source

Zero-Inflated Generalized Linear Mixed Models: A Better Way to Understand Data Relationships

open access: yesMathematics, 2021
Our article explores an underused mathematical analytical methodology in the social sciences. In addition to describing the method and its advantages, we extend a previously reported application of mixed models in a well-known database about corruption ...
Luiz Paulo Fávero   +4 more
doaj   +1 more source

Nonparametric Bayes modeling of count processes [PDF]

open access: yes, 2013
Data on count processes arise in a variety of applications, including longitudinal, spatial and imaging studies measuring count responses. The literature on statistical models for dependent count data is dominated by models built from hierarchical ...
Canale, Antonio, Dunson, David B.
core   +2 more sources

Population–reaction model and microbial experimental ecosystems for understanding hierarchical dynamics of ecosystems [PDF]

open access: yes, 2016
Understanding ecosystem dynamics is crucial as contemporary human societies face ecosystem degradation. One of the challenges that needs to be recognized is the complex hierarchical dynamics.
Hosoda, Kazufumi   +3 more
core   +1 more source

Evaluation of Risk Prediction with Hierarchical Data: Dependency Adjusted Confidence Intervals for the AUC

open access: yesStats, 2023
The area under the true ROC curve (AUC) is routinely used to determine how strongly a given model discriminates between the levels of a binary outcome. Standard inference with the AUC requires that outcomes be independent of each other.
Camden Bay   +4 more
doaj   +1 more source

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