Quantum Positional Encodings for Graph Neural Networks

Fuente: arXiv
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Autores principales: Thabet, Slimane, Djellabi, Mehdi, Sokolov, Igor, Kasture, Sachin, Henry, Louis-Paul, Henriet, Loïc
Formato: Preprint
Publicado: 2024
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author Thabet, Slimane
Djellabi, Mehdi
Sokolov, Igor
Kasture, Sachin
Henry, Louis-Paul
Henriet, Loïc
author_facet Thabet, Slimane
Djellabi, Mehdi
Sokolov, Igor
Kasture, Sachin
Henry, Louis-Paul
Henriet, Loïc
contents In this work, we propose novel families of positional encodings tailored to graph neural networks obtained with quantum computers. These encodings leverage the long-range correlations inherent in quantum systems that arise from mapping the topology of a graph onto interactions between qubits in a quantum computer. Our inspiration stems from the recent advancements in quantum processing units, which offer computational capabilities beyond the reach of classical hardware. We prove that some of these quantum features are theoretically more expressive for certain graphs than the commonly used relative random walk probabilities. Empirically, we show that the performance of state-of-the-art models can be improved on standard benchmarks and large-scale datasets by computing tractable versions of quantum features. Our findings highlight the potential of leveraging quantum computing capabilities to enhance the performance of transformers in handling graph data.
format Preprint
id arxiv_https___arxiv_org_abs_2406_06547
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Quantum Positional Encodings for Graph Neural Networks
Thabet, Slimane
Djellabi, Mehdi
Sokolov, Igor
Kasture, Sachin
Henry, Louis-Paul
Henriet, Loïc
Quantum Physics
In this work, we propose novel families of positional encodings tailored to graph neural networks obtained with quantum computers. These encodings leverage the long-range correlations inherent in quantum systems that arise from mapping the topology of a graph onto interactions between qubits in a quantum computer. Our inspiration stems from the recent advancements in quantum processing units, which offer computational capabilities beyond the reach of classical hardware. We prove that some of these quantum features are theoretically more expressive for certain graphs than the commonly used relative random walk probabilities. Empirically, we show that the performance of state-of-the-art models can be improved on standard benchmarks and large-scale datasets by computing tractable versions of quantum features. Our findings highlight the potential of leveraging quantum computing capabilities to enhance the performance of transformers in handling graph data.
title Quantum Positional Encodings for Graph Neural Networks
topic Quantum Physics
url https://arxiv.org/abs/2406.06547