Search Results for author: Paul G. Spirakis

Found 5 papers, 1 papers with code

Bayesian Decision Trees Inspired from Evolutionary Algorithms

no code implementations30 May 2023 Efthyvoulos Drousiotis, Alexander M. Phillips, Paul G. Spirakis, Simon Maskell

Bayesian Decision Trees (DTs) are generally considered a more advanced and accurate model than a regular Decision Tree (DT) because they can handle complex and uncertain data.

Evolutionary Algorithms

Parallel Approaches to Accelerate Bayesian Decision Trees

no code implementations22 Jan 2023 Efthyvoulos Drousiotis, Paul G. Spirakis, Simon Maskell

None-the-less, we propose two methods for exploiting parallelism in the MCMC: in the first, we replace the MCMC with another numerical Bayesian approach, the Sequential Monte Carlo (SMC) sampler, which has the appealing property that it is an inherently parallel algorithm; in the second, we consider data partitioning.

Single MCMC Chain Parallelisation on Decision Trees

no code implementations26 Jul 2022 Efthyvoulos Drousiotis, Paul G. Spirakis

Decision trees are highly famous in machine learning and usually acquire state-of-the-art performance.

Threshold-based Network Structural Dynamics

no code implementations8 Mar 2021 Evangelos Kipouridis, Paul G. Spirakis, Kostas Tsichlas

In particular, in each discrete round $t$, each pair of nodes $u$ and $v$ that are allowed to communicate by the scheduler, computes a value $\mathcal{E}(u, v)$ (the potential of the pair) as a function of the local structure of the network at round $t$ around the two nodes.

Distributed, Parallel, and Cluster Computing Data Structures and Algorithms

Crystal Structure Prediction via Oblivious Local Search

1 code implementation27 Mar 2020 Dmytro Antypov, Argyrios Deligkas, Vladimir Gusev, Matthew J. Rosseinsky, Paul G. Spirakis, Michail Theofilatos

In addition, due to the chemical expertise involved in the parameter-tuning, these approaches can be {\em biased} towards previously-known crystal structures.

Computational Engineering, Finance, and Science

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