Results 51 to 60 of about 18,151,622 (163)

The formulation of structural time series models in discrete and continuous time [PDF]

open access: yes, 1983
This paper sets out an approach for modelling univariate time series, including those in which observations are available on a daily basis. An underlying continuous time model is formulated and it is shown that this model has important implications for ...
Harvey, A. C., Harvey, Andrew C.
core   +1 more source

A Novel Combination of Segmentation, Ensemble Clustering and Genetic Algorithm for Clustering Time Series [PDF]

open access: yesJournal of Artificial Intelligence and Data Mining
Increasing the accuracy of time-series clustering while reducing execution time is a primary challenge in the field of time-series clustering. Researchers have recently applied approaches, such as the development of distance metrics and dimensionality ...
Zahra Ghorbani, Ali Ghorbanian
doaj   +1 more source

Fuzzy clustering of univariate and multivariate time series by genetic multiobjective optimization [PDF]

open access: yes
Given a set of time series, it is of interest to discover subsets that share similar properties. For instance, this may be useful for identifying and estimating a single model that may fit conveniently several time series, instead of performing the usual
S. Bandyopadhyay, R. Baragona, U. Maulik
core  

Regional economic disparities in Europe: time-series clustering of NUTS 3 regions

open access: yes, 2023
The aim of this research is to identify the regional economic disparities in the level of economic wealth and its dynamics in the NUTS 3 regions in EU28 over the period from 2000 to 2017.
López-Villuendas, Ana María   +1 more
core   +1 more source

Efficient Time-Series Clustering through Sparse Gaussian Modeling

open access: yesAlgorithms
In this work, we consider the problem of shape-based time-series clustering with the widely used Dynamic Time Warping (DTW) distance. We present a novel two-stage framework based on Sparse Gaussian Modeling.
Dimitris Fotakis   +3 more
doaj   +1 more source

Time-series clustering for sensor fault detection in large-scale Cyber-Physical Systems [PDF]

open access: yes
Large-scale Cyber-Physical Systems (CPSs) are information systems that involve a vast network of sensor nodes and other devices that stream observations in real-time and typically are deployed in uncontrolled, broad geographical terrains.
Brimicombe, Allan   +5 more
core   +1 more source

Clustering life trajectories: A new divisive hierarchical clustering algorithm for discrete-valued discrete time series [PDF]

open access: yes
A new algorithm for clustering life course trajectories is presented and tested with large register data. Life courses are represented as sequences on a monthly timescale for the working-life with an age span from 16-65.
Dlugosz, Stephan
core  

Exploring Optimal Strategies for Small Hydro Power Forecasting: Training Periods and Methodological Variations

open access: yesEngineering Proceedings
This study investigates optimal training intervals for small hydro power regression models, crucial for accurate forecasts in diverse conditions, particularly focusing on Portugal’s small hydro portfolio.
Duarte Lopes, Isabel Preto, David Freire
doaj   +1 more source

Unraveling Meteorological Dynamics: A Two-Level Clustering Algorithm for Time Series Pattern Recognition with Missing Data Handling

open access: yesStats
Identifying regions with similar meteorological features is of both socioeconomic and ecological importance. Towards that direction, useful information can be drawn from meteorological stations, and spread in a broader area.
Ekaterini Skamnia   +2 more
doaj   +1 more source

Labor Market Entry and Earnings Dynamics: Bayesian Inference Using Mixtures-of-Experts Markov Chain Clustering [PDF]

open access: yes
This paper analyzes patterns in the earnings development of young labor market entrants over their life cycle. We identify four distinctly different types of transition patterns between discrete earnings states in a large administrative data set. Further,
Sylvia Frühwirth-Schnatter   +3 more
core   +2 more sources

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