Results 31 to 40 of about 1,141,332 (255)

Machine learning approaches for forecasting inflation: empirical evidence from Sri Lanka

open access: yesRuhuna Journal of Science, 2023
The aim of this study is to forecast the inflation rate using supervised machine learning models (SMLM). While SMLMs are widely used in various fields, they have also been widely applied to forecast inflation rates.
W.M.S Bandara, W.A.R. De Mel
doaj   +1 more source

Efficient Cross-Validation in ILP [PDF]

open access: yes, 2001
Cross-validation is a technique used in many different machine learning approaches. Straightforward implementation of this technique has the disadvantage of causing computational overhead. However, it has been shown that this overhead often consists of redundant computations, which can be avoided by performing all folds of the cross-validation in ...
Struyf, Jan, Blockeel, Hendrik
openaire   +2 more sources

ECG Arrhythmia Classification using High Order Spectrum and 2D Graph Fourier Transform

open access: yesApplied Sciences, 2020
Heart diseases are in the front rank among several kinds of life threats, due to its high incidence and mortality. Regarded as a powerful tool in the diagnosis of the cardiac disorder and arrhythmia detection, analysis of electrocardiogram (ECG) signals ...
Shu Liu   +3 more
doaj   +1 more source

A theory of cross-validation error [PDF]

open access: yesJournal of Experimental & Theoretical Artificial Intelligence, 1994
This paper presents a theory of error in cross-validation testing of algorithms for predicting real-valued attributes. The theory justifies the claim that predicting real-valued attributes requires balancing the conflicting demands of simplicity and accuracy. Furthermore, the theory indicates precisely how these conflicting demands must be balanced, in
openaire   +4 more sources

Compressed Sensing With Cross Validation [PDF]

open access: yesIEEE Transactions on Information Theory, 2009
Compressed Sensing decoding algorithms can efficiently recover an N dimensional real-valued vector x to within a factor of its best k-term approximation by taking m = 2klog(N/k) measurements y = Phi x. If the sparsity or approximate sparsity level of x were known, then this theoretical guarantee would imply quality assurance of the resulting compressed
openaire   +2 more sources

Analyzing the Uncertainty of Estimating Forest Aboveground Biomass Using Optical Imagery and Spaceborne LiDAR

open access: yesRemote Sensing, 2019
Accurate estimation of forest aboveground biomass (AGB) is important for carbon accounting. Forest AGB estimation has been conducted with a variety of data sources and prediction methods, but many uncertainties still exist.
Xiaofang Sun   +3 more
doaj   +1 more source

An Application of High-Dimensional Statistics to Predictive Modeling of Grade Variability

open access: yesGeosciences, 2020
The economic viability of a mining project depends on its efficient exploration, which requires a prediction of worthwhile ore in a mine deposit. In this work, we apply the so-called LASSO methodology to estimate mineral concentration within unexplored ...
Juri Hinz   +2 more
doaj   +1 more source

Spatiotemporal patterns of precipitation based on the Bayesian maximum entropy method in a typical catchment of the Heihe River watershed, northwest China

open access: yesInternational Journal of Digital Earth, 2022
Precipitation patterns are vital to water resource management and hydrological research, especially in the upper reaches of inland rivers in arid and semiarid areas.
Hong Wang   +5 more
doaj   +1 more source

Debt-by-Price Ratio, End-of-Year Economic Growth, and Long-Term Prediction of Stock Returns

open access: yesMathematics, 2021
With the prominent role of government debt in economic growth in recent decades, one would expect that government debt alongside economic growth to be a risk factor priced in the time series of stock returns.
Parastoo Mousavi
doaj   +1 more source

Using Different Single-Step Strategies to Improve the Efficiency of Genomic Prediction on Body Measurement Traits in Pig

open access: yesFrontiers in Genetics, 2019
In genomic prediction, single-step method has been demonstrated to outperform multi-step methods. This study investigated the efficiency of genomic prediction for seven body measurement traits in Yorkshire population and simulated data using single-step ...
Hailiang Song   +4 more
doaj   +1 more source

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