Search Results for author: Tim Verdonck

Found 16 papers, 4 papers with code

Inferring the relationship between soil temperature and the normalized difference vegetation index with machine learning

no code implementations19 Dec 2023 Steven Mortier, Amir Hamedpour, Bart Bussmann, Ruth Phoebe Tchana Wandji, Steven Latré, Bjarni D. Sigurdsson, Tom De Schepper, Tim Verdonck

Ultimately, this study contributes to our knowledge of the relationships between soil temperature, meteorological variables, and vegetation phenology, providing valuable insights for predicting vegetation phenology characteristics and managing subarctic grasslands in the face of climate change.

POS

Tree-based Forecasting of Day-ahead Solar Power Generation from Granular Meteorological Features

no code implementations30 Nov 2023 Nick Berlanger, Noah van Ophoven, Tim Verdonck, Ines Wilms

Accurate forecasts for day-ahead photovoltaic (PV) power generation are crucial to support a high PV penetration rate in the local electricity grid and to assure stability in the grid.

A Causal Perspective on Loan Pricing: Investigating the Impacts of Selection Bias on Identifying Bid-Response Functions

no code implementations7 Sep 2023 Christopher Bockel-Rickermann, Sam Verboven, Tim Verdonck, Wouter Verbeke

In lending, where prices are specific to both customers and products, having a well-functioning personalized pricing policy in place is essential to effective business making.

Causal Inference Selection bias

TSLiNGAM: DirectLiNGAM under heavy tails

no code implementations10 Aug 2023 Sarah Leyder, Jakob Raymaekers, Tim Verdonck

TSLiNGAM leverages the non-Gaussianity assumption of the error terms in the LiNGAM model to obtain more efficient and robust estimation of the causal structure.

Causal Discovery

Fast Linear Model Trees by PILOT

no code implementations8 Feb 2023 Jakob Raymaekers, Peter J. Rousseeuw, Tim Verdonck, Ruicong Yao

Linear model trees are regression trees that incorporate linear models in the leaf nodes.

Model Selection regression

Fraud Analytics: A Decade of Research -- Organizing Challenges and Solutions in the Field

no code implementations7 Dec 2022 Christopher Bockel-Rickermann, Tim Verdonck, Wouter Verbeke

In addition, we build a framework for fraud analytical methods and propose a keywording strategy for future research.

Fraud Detection

Prescriptive maintenance with causal machine learning

no code implementations3 Jun 2022 Toon Vanderschueren, Robert Boute, Tim Verdonck, Bart Baesens, Wouter Verbeke

This work proposes to relax both assumptions by learning the effect of maintenance conditional on a machine's characteristics from observational data on similar machines using existing methodologies for causal inference.

BIG-bench Machine Learning Causal Inference

A new perspective on classification: optimally allocating limited resources to uncertain tasks

no code implementations9 Feb 2022 Toon Vanderschueren, Bart Baesens, Tim Verdonck, Wouter Verbeke

A central problem in business concerns the optimal allocation of limited resources to a set of available tasks, where the payoff of these tasks is inherently uncertain.

Fraud Detection Learning-To-Rank

Computational Efficient Approximations of the Concordance Probability in a Big Data Setting

no code implementations21 May 2021 Robin Van Oirbeek, Jolien Ponnet, Tim Verdonck

Contrary to AUC, the concordance probability can also be extended to the situation with a continuous response variable.

Weight-of-evidence 2.0 with shrinkage and spline-binning

1 code implementation5 Jan 2021 Jakob Raymaekers, Wouter Verbeke, Tim Verdonck

We present the results of a series of experiments in a fraud detection setting, which illustrate the effectiveness of the presented approach.

Decision Making Fraud Detection

Instance-Dependent Cost-Sensitive Learning for Detecting Transfer Fraud

1 code implementation5 May 2020 Sebastiaan Höppner, Bart Baesens, Wouter Verbeke, Tim Verdonck

Fraud detection is to be acknowledged as an instance-dependent cost-sensitive classification problem, where the costs due to misclassification vary between instances, and requiring adapted approaches for learning a classification model.

Applications

robROSE: A robust approach for dealing with imbalanced data in fraud detection

1 code implementation22 Mar 2020 Bart Baesens, Sebastiaan Höppner, Irene Ortner, Tim Verdonck

Detecting fraud in such a highly imbalanced data set typically leads to predictions that favor the majority group, causing fraud to remain undetected.

Anomaly Detection Fraud Detection

Concordance probability in a big data setting: application in non-life insurance

no code implementations14 Nov 2019 Robin Van Oirbeek, Christopher Grumiau, Tim Verdonck

Due to the typical large sample size of the frequency data in particular, two different adaptations of the estimation procedure of the concordance probability are presented.

regression

Profit Driven Decision Trees for Churn Prediction

no code implementations21 Dec 2017 Sebastiaan Höppner, Eugen Stripling, Bart Baesens, Seppe vanden Broucke, Tim Verdonck

Customer retention campaigns increasingly rely on predictive models to detect potential churners in a vast customer base.

Binary Classification General Classification

Cannot find the paper you are looking for? You can Submit a new open access paper.