Results 21 to 30 of about 282,414 (265)

Point and Interval Forecasting of Zonal Electricity Prices and Demand Using Heteroscedastic Models: The IPEX Case

open access: yesEnergies, 2020
Since the electricity market liberalisation of the mid-1990s, forecasting energy demand and prices in competitive markets has become of primary importance for energy suppliers, market regulators and policy makers.
Mauro Bernardi, Francesco Lisi
doaj   +1 more source

USING MULTIVARIATE ADAPTIVE REGRESSION SPLINE AND ARTIFICIAL NEURAL NETWORK TO SIMULATE URBANIZATION IN MUMBAI, INDIA [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2015
Land use change (LUC) models used for modelling urban growth are different in structure and performance. Local models divide the data into separate subsets and fit distinct models on each of the subsets.
M. Ahmadlou   +3 more
doaj   +1 more source

Non-Parametric Learning of Gaifman Models

open access: yesCoRR, 2020
We consider the problem of structure learning for Gaifman models and learn relational features that can be used to derive feature representations from a knowledge base. These relational features are first-order rules that are then partially grounded and counted over local neighborhoods of a Gaifman model to obtain the feature representations.
Devendra Singh Dhami   +3 more
openaire   +2 more sources

A non-parametric model for the cosmic velocity field [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 1999
We present a self consistent nonparametric model of the local cosmic velocity field based on the density distribution in the PSCz redshift survey of IRAS galaxies. The error analysis, carried out on mock PSCz catalogues constructed from N-body simulations, reveals uncertainties of ~70 km/sec.
BRANCHINI, ENZO FRANCO   +12 more
openaire   +2 more sources

Non-parametric Models for Non-negative Functions

open access: yesCoRR, 2020
Linear models have shown great effectiveness and flexibility in many fields such as machine learning, signal processing and statistics. They can represent rich spaces of functions while preserving the convexity of the optimization problems where they are used, and are simple to evaluate, differentiate and integrate.
Ulysse Marteau-Ferey   +2 more
openaire   +3 more sources

The influence of vegetation height heterogeneity on forest and woodland bird species richness across the United States. [PDF]

open access: yesPLoS ONE, 2014
Avian diversity is under increasing pressures. It is thus critical to understand the ecological variables that contribute to large scale spatial distribution of avian species diversity.
Qiongyu Huang   +3 more
doaj   +1 more source

Non-parametric Bayesian Constrained Local Models [PDF]

open access: yes2014 IEEE Conference on Computer Vision and Pattern Recognition, 2014
This work presents a novel non-parametric Bayesian formulation for aligning faces in unseen images. Popular approaches, such as the Constrained Local Models (CLM) or the Active Shape Models (ASM), perform facial alignment through a local search, combining an ensemble of detectors with a global optimization strategy that constraints the facial feature ...
Pedro Martins 0004   +2 more
openaire   +1 more source

Bayesian Non-Parametric Mixtures of GARCH(1,1) Models

open access: yesJournal of Probability and Statistics, 2012
Traditional GARCH models describe volatility levels that evolve smoothly over time, generated by a single GARCH regime. However, nonstationary time series data may exhibit abrupt changes in volatility, suggesting changes in the underlying GARCH regimes ...
John W. Lau, Ed Cripps
doaj   +1 more source

Functional non-parametric mixed effects models for cytotoxicity assessment and clustering

open access: yesScientific Reports, 2023
A multitude of natural and synthetic chemicals are present in our environment.Through the study of a compound’s cytotoxicity, researchers can carefully set regulations regarding how much of a certain chemical in the ambient environment is tolerable.
Tiantian Ma   +4 more
doaj   +1 more source

Explaining predictive models using Shapley values and non-parametric vine copulas

open access: yesDependence Modeling, 2021
In this paper the goal is to explain predictions from complex machine learning models. One method that has become very popular during the last few years is Shapley values.
Aas Kjersti   +3 more
doaj   +1 more source

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