Search Results for author: Aaron Sim

Found 6 papers, 1 papers with code

Proxy-based Zero-Shot Entity Linking by Effective Candidate Retrieval

no code implementations30 Jan 2023 Maciej Wiatrak, Eirini Arvaniti, Angus Brayne, Jonas Vetterle, Aaron Sim

A recent advancement in the domain of biomedical Entity Linking is the development of powerful two-stage algorithms, an initial candidate retrieval stage that generates a shortlist of entities for each mention, followed by a candidate ranking stage.

Entity Linking Metric Learning +1

Pseudo-Riemannian Embedding Models for Multi-Relational Graph Representations

no code implementations2 Dec 2022 Saee Paliwal, Angus Brayne, Benedek Fabian, Maciej Wiatrak, Aaron Sim

In this paper we generalize single-relation pseudo-Riemannian graph embedding models to multi-relational networks, and show that the typical approach of encoding relations as manifold transformations translates from the Riemannian to the pseudo-Riemannian case.

Graph Embedding Knowledge Graph Completion +1

Directed Graph Embeddings in Pseudo-Riemannian Manifolds

no code implementations16 Jun 2021 Aaron Sim, Maciej Wiatrak, Angus Brayne, Páidí Creed, Saee Paliwal

The inductive biases of graph representation learning algorithms are often encoded in the background geometry of their embedding space.

Graph Representation Learning Link Prediction

Contrastive Mixture of Posteriors for Counterfactual Inference, Data Integration and Fairness

1 code implementation NeurIPS 2021 Adam Foster, Árpi Vezér, Craig A Glastonbury, Páidí Creed, Sam Abujudeh, Aaron Sim

Learning meaningful representations of data that can address challenges such as batch effect correction and counterfactual inference is a central problem in many domains including computational biology.

counterfactual Counterfactual Inference +3

Interpretable Graph Convolutional Neural Networks for Inference on Noisy Knowledge Graphs

no code implementations1 Dec 2018 Daniel Neil, Joss Briody, Alix Lacoste, Aaron Sim, Paidi Creed, Amir Saffari

In this work, we provide a new formulation for Graph Convolutional Neural Networks (GCNNs) for link prediction on graph data that addresses common challenges for biomedical knowledge graphs (KGs).

Denoising Knowledge Graphs +1

Random Forests on Distance Matrices for Imaging Genetics Studies

no code implementations24 Sep 2013 Aaron Sim, Dimosthenis Tsagkrasoulis, Giovanni Montana

We propose a non-parametric regression methodology, Random Forests on Distance Matrices (RFDM), for detecting genetic variants associated to quantitative phenotypes representing the human brain's structure or function, and obtained using neuroimaging techniques.

regression

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