Searched for: subject%3A%22model%255C+validation%22
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van Bohemen, Robin (author)
Plastic has many valuable properties and has become an intrinsic part of our everyday life. An approximated 400 million tonnes is produced every year, consequently, vast quantities of plastic waste find their way into the oceans. The question "Why don't we just clean it up?" led to the founding of The Ocean Cleanup by Dutch entrepreneur Boyan...
master thesis 2024
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Bakker, A.M.R. (author), Busnach, Tycho (author), Mooyaart, L.F. (author), Van Gijzen, L. (author)
The efficacy of risk models and risk analyses critically hinges on sufficient model evaluation. Nevertheless, the usefulness for the intended purpose is rarely systematically assessed. Poor or even lacking model evaluation of the applied risk models and analyses also troubles the asset management of storm surge barriers in the Netherlands. In...
conference paper 2023
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Troost, Christian (author), Huber, Robert (author), Bell, Andrew R. (author), van Delden, Hedwig (author), Filatova, T. (author), Le, Quang Bao (author), Lippe, Melvin (author), Niamir, Leila (author), Polhill, J. Gareth (author), Sun, Zhanli (author), Berger, Thomas (author)
There has so far been no shared understanding of validity in agent-based simulation. We here conceptualise validation as systematically substantiating the premises on which conclusions from simulation analysis for a particular modelling context are built. Given such a systematic perspective, validity of agent-based models cannot be ensured if...
journal article 2023
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Hooyberghs, H. (author), De Craemer, S. (author), Lefebvre, W. (author), Vranckx, S. (author), Maiheu, B. (author), Trimpeneers, E. (author), Vanpoucke, C. (author), Janssen, S. (author), Meysman, F.J.R. (author), Fierens, F. (author)
Detailed validation of air quality models is essential, but remains challenging, due to a lack of suitable high-resolution measurement datasets. This is particularly true for pollutants with short-scale spatial variations, such as nitrogen dioxide (NO<sub>2</sub>). While street-level air quality model chains can predict concentration...
journal article 2022
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Siebinga, O. (author), Zgonnikov, A. (author), Abbink, D.A. (author)
A major challenge for autonomous vehicles is interacting with other traffic participants safely and smoothly. A promising approach to handle such traffic interactions is equipping autonomous vehicles with interaction-aware controllers (IACs). These controllers predict how surrounding human drivers will respond to the autonomous vehicle’s actions...
journal article 2022
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Harlequin, Denzel (author)
The overarching aim of this research is to contribute towards a best practice in modelling meso-scale O(10km), medium-term O(5yrs.) morphological features in Tidal &amp; Estuarine environments. Therefore, various modelling aspects and stages are reviewed. The first pillar argues the need for numerical models in the...
student report 2021
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Xu, L. (author), Guo, Fang (author), Hoes, Pieter-Jan (author), Yang, Xudong (author), Hensen, Jan (author)
This paper presents a modeling and simulation method that supports energy performance assessment and operation strategy investigation of borehole thermal energy storage in the Chifeng district heating (DH) system. A living laboratory in Chifeng, China that integrates a 0.5 million m3 borehole thermal energy storage system, an on-site solar...
journal article 2021
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Rood, N.M. (author)
In this study, two interest rate models are analysed in context of counterparty credit risk. The goal of the study is to find a model that performs well on historical simulation for the PFE and EPE. The two models analysed are the Dynamic Nelson-Siegel model and the Displaced Diffusion model.<br/>In the Dynamic Nelson-Siegel model, a Nelson...
master thesis 2020
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Bussemakers, Matthijs (author)
Climate change, as a result from global warming, requires an energy transition: the reduction of greenhouse gas emissions from fossil fuels and a radical innovation of the global energy system to proceed apace. Offshore wind is an important source of clean, renewable energy, and it plays a key role in the transition. 80% of the worldwide...
master thesis 2020
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Mazza, Piero (author)
This work follows the wind energy airfoil probabilistic design approach that allows to derive a probability density function which gives an estimation of how much the angle of attack is likely to fluctuate, according to the considered non-uniform perturbations in the wind speed. Several combinations of the perturbation sources are possible in...
master thesis 2020
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Bosboom, J. (author)
This thesis investigates the behaviour of the often used point-wise skill score, the MSESSini a.k.a. BSS, and develops new error metrics that, as opposed to point-wise metrics, take the spatial structure of morphological patterns into account. The...
doctoral thesis 2020
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den Boer, Tjerk (author)
A dynamic power system model cannot perfectly predict the behaviour of a physical power system. Model validation tries to answer the question whether the model predicts the behaviour of the physical system sufficiently. This study evaluates if and how a dynamic power system model of the Dutch power grid can be validated using PMU measurements....
master thesis 2020
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Bosboom, J. (author), Mol, M. (author), Reniers, A.J.H.M. (author), Stive, M.J.F. (author), de Valk, C. F. (author)
Although commonly used for the validation of morphological predictions, point-wise accuracy metrics, such as the root-mean-squared error (RMSE), are not well suited to demonstrate the quality of a high-variability prediction; in the presence of (often inevitable) location errors, the comparison of depth values per grid point tends to favour...
journal article 2020
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Liu, X. (author), Markine, V.L. (author)
This paper presents the development of a multi-body system (MBS) vehicle-crossing model and its application in the structural health monitoring (SHM) of railway crossings. The vehicle and track configurations in the model were adjusted to best match the real-life situation. By using the measurement results obtained from an instrumented...
journal article 2020
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Garg, Shiwankar (author)
Photovoltaic Technologies in recent years have gained immense attention owing to reduced costs and increasing efficiencies. While decades of research in Photovoltaic Thermal (PVT) technologies, producing thermal and electrical energy simultaneously have brought these costs further down, improving a system’s overall performance. PVT collectors...
master thesis 2018
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Brons, Rick (author)
The restoration of the walking function of paraplegic patients requires long and extensive training. Physicians themselves are not able to provide this training due to the physical labour required. Robots and soft exoskeletons are in development to assist the physicians in this task, however, they are either bulky and restrictive or lack a...
master thesis 2018
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Silva Pinto Wahnon, S. (author), Ammirabile, L. (author), Kloosterman, J.L. (author), Lathouwers, D. (author)
The demonstrated technological feasibility of Sodium-cooled Fast Reactors (SFRs) makes them stand out among the other reactor concepts proposed by Generation IV International Forum (GIF) for short-term deployment. The availability of reliable computational tools in support of safety analyses and plant simulations under complex transient...
journal article 2018
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Caballero Hernandez, Enrique (author)
Nowadays more attention to environmental-friendly sources of energy has been given, aiming to slow down and counteract the damage to the ecosystem product of the abuse of fossil fuels. Different technologies on energy production, solar, wind, tidal, geothermic, etc., have been researched with the additional challenge of how to store it.<br/>From...
master thesis 2017
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Ivanov, Viktor (author)
Model selection is associated to model assessment, which is the problem of comparing different models, or model hyperparameters, for a particular learning task. It constitutes a fundamental step in building machine learning models. The central question is: How a model will work in the future? In this thesis, a new model selection scheme for...
master thesis 2017
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Van Emmerik, T.H.M. (author), Mulder, G. (author), Eilander, D. (author), Piet, M. (author), Savenije, H.H.G. (author)
The hydrological decade on Predictions in Ungauged Basins (PUB) led to many new insights in model development, calibration strategies, data acquisition and uncertainty analysis. Due to a limited amount of published studies on genuinely ungauged basins, model validation and realism assessment of model outcome has not been discussed to a great...
journal article 2015
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