Профили пользователей по запросу "George Kopsiaftis"
George KopsiaftisNational Technical University of Athens Подтвержден адрес электронной почты в домене central.ntua.gr Цитируется: 983 |
Multi-class confusion matrix reduction method and its application on net promoter score classification problem
The paper presents a novel method for reducing a multi-class Confusion Matrix into a 2 × 2
version enabling the use of the relevant performance metrics and methods like the Receiver …
version enabling the use of the relevant performance metrics and methods like the Receiver …
Gaussian process regression tuned by bayesian optimization for seawater intrusion prediction
G Kopsiaftis, E Protopapadakis… - Computational …, 2019 - Wiley Online Library
Accurate prediction of the seawater intrusion extent is necessary for many applications,
such as groundwater management or protection of coastal aquifers from water quality …
such as groundwater management or protection of coastal aquifers from water quality …
Vehicle detection and traffic density monitoring from very high resolution satellite video data
G Kopsiaftis, K Karantzalos - 2015 IEEE international …, 2015 - ieeexplore.ieee.org
In this paper an automated vehicle detection and traffic density estimation algorithm has
been developed and validated for very high resolution satellite video data. The algorithm is …
been developed and validated for very high resolution satellite video data. The algorithm is …
Methodology for holistic assessment of grey-green flood mitigation measures for climate change adaptation in urban basins
A novel methodological framework for urban drainage adaptation to climate change is
introduced and tested in a small urban basin. The impact of climate change on Intensity-Duration-…
introduced and tested in a small urban basin. The impact of climate change on Intensity-Duration-…
Performance comparison of physics-based and machine learning assisted multi-fidelity methods for the management of coastal aquifer systems
In this work we investigate the performance of various lower-fidelity models of seawater
intrusion in coastal aquifer management problems. The variable density model is considered as …
intrusion in coastal aquifer management problems. The variable density model is considered as …
Propagating dam breach parametric uncertainty in a river reach using the HEC-RAS software
Dam break studies consist of two submodels: (a) the dam breach submodel which derives
the flood hydrograph and (b) the hydrodynamic submodel which, using the flood hydrograph, …
the flood hydrograph and (b) the hydrodynamic submodel which, using the flood hydrograph, …
[HTML][HTML] An adaptive multi-fidelity optimization framework based on co-Kriging surrogate models and stochastic sampling with application to coastal aquifer …
Surrogate modelling has been used successfully to alleviate the computational burden that
results from high-fidelity numerical models of seawater intrusion in simulation-optimization …
results from high-fidelity numerical models of seawater intrusion in simulation-optimization …
Performance comparison of multiple and single surrogate models for pumping optimization of coastal aquifers
V Christelis, G Kopsiaftis… - Hydrological Sciences …, 2019 - Taylor & Francis
Single and multiple surrogate models were compared for single-objective pumping optimization
problems of a hypothetical and a real-world coastal aquifer. Different instances of radial …
problems of a hypothetical and a real-world coastal aquifer. Different instances of radial …
Assessment of drought impacts on semi-arid coastal aquifers of the Mediterranean
Long-term impacts of drought, such as groundwater decline, can emerge during a persisting
drought. Though not easily visible, they are severe and harder to cope with. Groundwater is …
drought. Though not easily visible, they are severe and harder to cope with. Groundwater is …
A machine learning based classification method for customer experience survey analysis
Customer Experience (CX) is monitored through market research surveys, based on metrics
like the Net Promoter Score (NPS) and the customer satisfaction for certain experience …
like the Net Promoter Score (NPS) and the customer satisfaction for certain experience …