Estimating the monthly pan evaporation with limited climatic data in dryland based on the extended long short-term memory model enhanced with meta-heuristic algorithms

Scientific Reports, Год журнала: 2023, Номер 13(1)

Опубликована: Апрель 12, 2023

Accurate estimation of evaporation is great significance for understanding regional drought, and managing applying limited water resources in dryland. However, the application traditional approaches due to lack required meteorological parameters or experimental conditions. In this study, a novel hybrid model was proposed estimate monthly pan Ep dryland by integrating long short-term memory (LSTM) with grey wolf optimizer (GWO) algorithm Kendall-τ correlation coefficient, where GWO employed find optimal hyper-parameters LSTM, coefficient used determine input combination variables. The performance compared other methods based on evaluation metrics, including root mean squared error (RMSE), normalized (NMSE), absolute (MAE), percentage (MAPE), Nash-Sutcliffe efficiency (NSCE). results indicated that Kendall-τ-GWO-LSTM models are average temperature, minimum air maximum values RMSE, NMSE, MAE, MAPE 38.28, 0.20, 26.62, 19.96%, NSCE 0.89, suggesting exhibit better than models. Thus, highly recommended estimating information present investigation provides method variables coupling deep learning meta-heuristic algorithms data preprocessing techniques.

Язык: Английский

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Defining model complexity: An ecological perspective

Meteorological Applications, Год журнала: 2024, Номер 31(3)

Опубликована: Май 1, 2024

Abstract Models have become a key component of scientific hypothesis testing and climate sustainability planning, as enabled by increased data availability computing power. As result, understanding how the perceived ‘complexity’ model corresponds to its accuracy predictive power has prevalent research topic. However, wide variety definitions complexity been proposed used, leading an imprecise what is consequences across studies, study systems, disciplines. Here, we propose more explicit definition complexity, incorporating four facets—model class, inputs, parameters, computational complexity—which are modulated real‐world process being modelled. We illustrate these facets with several examples drawn from ecological literature. Overall, argue that precise terminology metrics (e.g., number inputs) may be necessary characterize emergent outcomes including comparison, performance, transferability decision support.

Язык: Английский

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Nonequilibrium dynamics in conservation biology: Scales, attractors and critical points

Biological Conservation, Год журнала: 2024, Номер 294, С. 110601 - 110601

Опубликована: Май 24, 2024

Preserving and restoring biodiversity is becoming a great challenge as we face world where planetary boundaries will likely be crossed over the following decades. Such needs to consider multiple scales of complexity, both in space time. A common threat most cases presence nonlinear phenomena generating shifts among alternative states. These breaking points imply new perception risk different management strategies. broad range affect preservation healthy communities constrain ways deal with conservation, from local features associated habitat loss or facilitation mesoscale global network-level ecological complexity role played by extreme events. How are these connected? can emergent properties ecosystem dynamics exploited? Here synthesis ideas presented, complex systems view involved, separating them, universal that allow defining simple models on each scale.

Язык: Английский

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Biosphere, hydrosphere and noosphere as components of the hypercomplex system of planet Earth. Part 2. Biosphere as a system: a system approach in the study and representation of the biosphere

Hydrosphere Еcology (Экология гидросферы), Год журнала: 2024, Номер 1(11), С. 28 - 60

Опубликована: Авг. 1, 2024

This part of the analytical review considers biosphere as unique, living, ecological, complex, Earth system (ESS), a hypercomplex, and adaptive system, hyperobject object representation. The contribution by K. Linnaeus, A.A. Bogdanov, J. Lovelock, E. Morin, T. Morton other thinkers for approach is described.

Язык: Английский

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CompLex: Legal systems through the lens of complexity science

EPL (Europhysics Letters), Год журнала: 2024, Номер 149(2), С. 22001 - 22001

Опубликована: Дек. 3, 2024

Abstract While “complexity science” has achieved significant successes in several interdisciplinary fields such as economics and biology, it is only a very recent observation that legal systems —from the way texts are drafted connected to rest of corpus, up level how judges courts reach decisions under variety conflicting inputs— share features with standard Complex Adaptive Systems. This review meant gentle introduction use quantitative tools techniques complexity science describe, analyse, tame complex web human interactions Law supposed regulate. We offer an overview main directions research undertaken so far well outlook for future research, we argue statistical physicists scientists should not ignore opportunities offered by cross-fertilisation between scholarship complex-systems modelling.

Язык: Английский

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