Search Results for author: Katrien Antonio

Found 9 papers, 5 papers with code

Reducing the dimensionality and granularity in hierarchical categorical variables

1 code implementation6 Mar 2024 Paul Wilsens, Katrien Antonio, Gerda Claeskens

We apply our methodology on a real dataset and find that the reduced hierarchy is an improvement over the original hierarchical structure and reduced structures proposed in the literature.

Neural networks for insurance pricing with frequency and severity data: a benchmark study from data preprocessing to technical tariff

1 code implementation19 Oct 2023 Freek Holvoet, Katrien Antonio, Roel Henckaerts

We compare in detail the performance of: a generalized linear model on binned input data, a gradient-boosted tree model, a feed-forward neural network (FFNN), and the combined actuarial neural network (CANN).

An engine to simulate insurance fraud network data

no code implementations21 Aug 2023 Bavo D. C. Campo, Katrien Antonio

We therefore design a simulation machine that is engineered to create synthetic data with a network structure and available covariates similar to the real life insurance fraud data set analyzed in \'Oskarsd\'ottir et al. (2022).

Fraud Detection

Bridging the gap between pricing and reserving with an occurrence and development model for non-life insurance claims

no code implementations14 Mar 2022 Jonas Crevecoeur, Katrien Antonio, Stijn Desmedt, Alexandre Masquelein

The advantages of our proposed strategy are most compelling in the reinsurance illustration where large uncertainties in the best estimates originate from long reporting and settlement delays, low claim frequencies and heavy (even extreme) claim sizes.

Assessing the impact of the COVID-19 shock on a stochastic multi-population mortality model

no code implementations19 Nov 2021 Jens Robben, Katrien Antonio, Sander Devriendt

To be compliant with the design and calibration strategy of the Li & Lee model, we have to transform the weekly mortality data collected in age buckets to yearly, age-specific observations.

Social network analytics for supervised fraud detection in insurance

1 code implementation15 Sep 2020 María Óskarsdóttir, Waqas Ahmed, Katrien Antonio, Bart Baesens, Rémi Dendievel, Tom Donas, Tom Reynkens

Finally, we combine these network features with the claim-specific features and build a supervised model with fraud in motor insurance as the target variable.

Fraud Detection

A hierarchical reserving model for reported non-life insurance claims

1 code implementation28 Oct 2019 Jonas Crevecoeur, Jens Robben, Katrien Antonio

We present the hierarchical reserving model as a modular framework for integrating a claim's history and claim-specific covariates into the development process.

Boosting insights in insurance tariff plans with tree-based machine learning methods

3 code implementations12 Apr 2019 Roel Henckaerts, Marie-Pier Côté, Katrien Antonio, Roel Verbelen

With the upswing of data analytics, our study puts focus on machine learning methods to develop full tariff plans built from both the frequency and severity of claims.

BIG-bench Machine Learning

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