Search Results for author: Johannes Lutzeyer

Found 4 papers, 3 papers with code

Graph Neural Machine: A New Model for Learning with Tabular Data

1 code implementation5 Feb 2024 Giannis Nikolentzos, Siyun Wang, Johannes Lutzeyer, Michalis Vazirgiannis

We then propose a new machine learning model for tabular data, the so-called Graph Neural Machine (GNM), which replaces the MLP's directed acyclic graph with a nearly complete graph and which employs a synchronous message passing scheme.

Path Neural Networks: Expressive and Accurate Graph Neural Networks

1 code implementation9 Jun 2023 Gaspard Michel, Giannis Nikolentzos, Johannes Lutzeyer, Michalis Vazirgiannis

We derive three different variants of the PathNN model that aggregate single shortest paths, all shortest paths and all simple paths of length up to K. We prove that two of these variants are strictly more powerful than the 1-WL algorithm, and we experimentally validate our theoretical results.

Graph Classification Graph Regression

How the Move Acceptance Hyper-Heuristic Copes With Local Optima: Drastic Differences Between Jumps and Cliffs

no code implementations20 Apr 2023 Benjamin Doerr, Arthur Dremaux, Johannes Lutzeyer, Aurélien Stumpf

In recent work, Lissovoi, Oliveto, and Warwicker (Artificial Intelligence (2023)) proved that the Move Acceptance Hyper-Heuristic (MAHH) leaves the local optimum of the multimodal cliff benchmark with remarkable efficiency.

Evolutionary Algorithms Open-Ended Question Answering

Learning Parametrised Graph Shift Operators

1 code implementation ICLR 2021 George Dasoulas, Johannes Lutzeyer, Michalis Vazirgiannis

In many domains data is currently represented as graphs and therefore, the graph representation of this data becomes increasingly important in machine learning.

Graph Classification

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