Profils utilisateurs correspondant à "Wojtek Kowalczyk"

Wojtek Kowalczyk

Assistant Professor, LIACS, Leiden University
Adresse e-mail validée de liacs.leidenuniv.nl
Cité 1718 fois

Beyond the hype: deep neural networks outperform established methods using a ChEMBL bioactivity benchmark set

…, G Papadatos, HWT Van Vlijmen, W Kowalczyk… - Journal of …, 2017 - Springer
The increase of publicly available bioactivity data in recent years has fueled and catalyzed
research in chemogenomics, data mining, and modeling approaches. As a direct result, over …

[PDF][PDF] Newscast computing

M Jelasity, W Kowalczyk, M Van Steen - 2003 - research.vu.nl
Monitoring large computer networks often involves aggregation of various sorts of data that
are distributed across network components. Finding extreme values, counting discrete …

Reinforcement learning for online control of evolutionary algorithms

AE Eiben, M Horvath, W Kowalczyk… - … Self-Organising Systems …, 2007 - Springer
The research reported in this paper is concerned with assessing the usefulness of reinforcment
learning (RL) for on-line calibration of parameters in evolutionary algorithms (EA). We …

Newscast em

W Kowalczyk, N Vlassis - Advances in neural information …, 2004 - proceedings.neurips.cc
We propose a gossip-based distributed algorithm for Gaussian mixture learning, Newscast
EM. The algorithm operates on network topologies where each node observes a local …

Neural network identification of poets using letter sequences

JF Hoorn, SL Frank, W Kowalczyk… - Literary and Linguistic …, 1999 - academic.oup.com
Stylish differences among poets are usually sought in sound and semantics. In human analysis,
the criteria for recognizing stylistic differences are manifold and intermingled. This study …

Combining deep learning and location-based ranking for large-scale archaeological prospection of LiDAR data from the Netherlands

…, K Lambers, W Kowalczyk… - … International Journal of …, 2020 - mdpi.com
This paper presents WODAN2.0, a workflow using Deep Learning for the automated detection
of multiple archaeological object classes in LiDAR data from the Netherlands. WODAN2.0 …

Cluster-based Kriging approximation algorithms for complexity reduction

B Van Stein, H Wang, W Kowalczyk, M Emmerich… - Applied …, 2020 - Springer
Kriging or Gaussian Process Regression is applied in many fields as a non-linear regression
model as well as a surrogate model in the field of evolutionary computation. However, the …

Improving imbalanced classification by anomaly detection

J Kong, W Kowalczyk, S Menzel, T Bäck - International Conference on …, 2020 - Springer
Although the anomaly detection problem can be considered as an extreme case of class
imbalance problem, very few studies consider improving class imbalance classification with …

Optimally weighted cluster kriging for big data regression

B van Stein, H Wang, W Kowalczyk, T Bäck… - … symposium on intelligent …, 2015 - Springer
In business and academia we are continuously trying to model and analyze complex
processes in order to gain insight and optimize. One of the most popular modeling algorithms is …

Hyperparameter optimisation for improving classification under class imbalance

J Kong, W Kowalczyk, DA Nguyen… - … symposium series on …, 2019 - ieeexplore.ieee.org
Although the class-imbalance classification problem has caught a huge amount of attention,
hyperparameter optimisation has not been studied in detail in this field. Both classification …