Search Results for author: İsmail İlkan Ceylan

Found 15 papers, 7 papers with code

Graph neural network outputs are almost surely asymptotically constant

1 code implementation6 Mar 2024 Sam Adam-Day, Michael Benedikt, İsmail İlkan Ceylan, Ben Finkelshtein

Our results apply to a broad class of random graph models, including the (sparse) Erd\H{o}s-R\'enyi model and the stochastic block model.

Stochastic Block Model

Link Prediction with Relational Hypergraphs

no code implementations6 Feb 2024 Xingyue Huang, Miguel Romero Orth, Pablo Barceló, Michael M. Bronstein, İsmail İlkan Ceylan

In this paper, we propose two frameworks for link prediction with relational hypergraphs and conduct a thorough analysis of the expressive power of the resulting model architectures via corresponding relational Weisfeiler-Leman algorithms, and also via some natural logical formalisms.

Inductive Link Prediction Knowledge Graphs

Future Directions in Foundations of Graph Machine Learning

no code implementations3 Feb 2024 Christopher Morris, Nadav Dym, Haggai Maron, İsmail İlkan Ceylan, Fabrizio Frasca, Ron Levie, Derek Lim, Michael Bronstein, Martin Grohe, Stefanie Jegelka

Machine learning on graphs, especially using graph neural networks (GNNs), has seen a surge in interest due to the wide availability of graph data across a broad spectrum of disciplines, from life to social and engineering sciences.

Position

Cooperative Graph Neural Networks

no code implementations2 Oct 2023 Ben Finkelshtein, Xingyue Huang, Michael Bronstein, İsmail İlkan Ceylan

Graph neural networks are popular architectures for graph machine learning, based on iterative computation of node representations of an input graph through a series of invariant transformations.

PlanE: Representation Learning over Planar Graphs

1 code implementation NeurIPS 2023 Radoslav Dimitrov, Zeyang Zhao, Ralph Abboud, İsmail İlkan Ceylan

Graph neural networks are prominent models for representation learning over graphs, where the idea is to iteratively compute representations of nodes of an input graph through a series of transformations in such a way that the learned graph function is isomorphism invariant on graphs, which makes the learned representations graph invariants.

Isomorphism Testing Representation Learning

A Theory of Link Prediction via Relational Weisfeiler-Leman on Knowledge Graphs

1 code implementation NeurIPS 2023 Xingyue Huang, Miguel Romero Orth, İsmail İlkan Ceylan, Pablo Barceló

Our goal is to provide a systematic understanding of the landscape of graph neural networks for knowledge graphs pertaining to the prominent task of link prediction.

Knowledge Graphs Link Prediction +1

Shortest Path Networks for Graph Property Prediction

1 code implementation2 Jun 2022 Ralph Abboud, Radoslav Dimitrov, İsmail İlkan Ceylan

Most graph neural network models rely on a particular message passing paradigm, where the idea is to iteratively propagate node representations of a graph to each node in the direct neighborhood.

Graph Classification Graph Property Prediction +1

Equivariant Quantum Graph Circuits

no code implementations10 Dec 2021 Péter Mernyei, Konstantinos Meichanetzidis, İsmail İlkan Ceylan

We investigate quantum circuits for graph representation learning, and propose equivariant quantum graph circuits (EQGCs), as a class of parameterized quantum circuits with strong relational inductive bias for learning over graph-structured data.

Graph Representation Learning Inductive Bias

Temporal Knowledge Graph Completion using Box Embeddings

1 code implementation18 Sep 2021 Johannes Messner, Ralph Abboud, İsmail İlkan Ceylan

Temporal knowledge graph completion (TKGC) is an extension of this task to temporal knowledge graphs, where each fact is additionally associated with a time stamp.

Knowledge Graph Embedding Temporal Knowledge Graph Completion

Node Classification Meets Link Prediction on Knowledge Graphs

no code implementations14 Jun 2021 Ralph Abboud, İsmail İlkan Ceylan

Node classification and link prediction are widely studied in graph representation learning.

Benchmarking Classification +4

The Surprising Power of Graph Neural Networks with Random Node Initialization

1 code implementation2 Oct 2020 Ralph Abboud, İsmail İlkan Ceylan, Martin Grohe, Thomas Lukasiewicz

In this work, we analyze the expressive power of GNNs with RNI, and prove that these models are universal, a first such result for GNNs not relying on computationally demanding higher-order properties.

Representation Learning

BoxE: A Box Embedding Model for Knowledge Base Completion

1 code implementation NeurIPS 2020 Ralph Abboud, İsmail İlkan Ceylan, Thomas Lukasiewicz, Tommaso Salvatori

Knowledge base completion (KBC) aims to automatically infer missing facts by exploiting information already present in a knowledge base (KB).

Knowledge Base Completion Knowledge Graphs +1

On the Approximability of Weighted Model Integration on DNF Structures

no code implementations17 Feb 2020 Ralph Abboud, İsmail İlkan Ceylan, Radoslav Dimitrov

Weighted model counting (WMC) consists of computing the weighted sum of all satisfying assignments of a propositional formula.

Dynamic Bayesian Ontology Languages

no code implementations26 Jun 2015 İsmail İlkan Ceylan, Rafael Peñaloza

Many formalisms combining ontology languages with uncertainty, usually in the form of probabilities, have been studied over the years.

Adding Context to Knowledge and Action Bases

no code implementations26 Dec 2014 Diego Calvanese, İsmail İlkan Ceylan, Marco Montali, Ario Santoso

Knowledge and Action Bases (KABs) have been recently proposed as a formal framework to capture the dynamics of systems which manipulate Description Logic (DL) Knowledge Bases (KBs) through action execution.

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