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A Denoising Adversarial Model Based on Hyperellipsoidal Knowledge Representation Learning for DTI Prediction.

Chunming Yang, Fang Xiong, Yue Luo

IEEE Transactions on Computational Biology and Bioinformatics

|July 6, 2026

Summary

This study introduces DAH-DTI, a novel model for predicting drug-target interactions (DTI) by addressing knowledge graph biases. DAH-DTI improves prediction accuracy by denoising data, generating quality samples, and using hyperellipsoid embedding.

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Area of Science:

Bioinformatics
Computational Chemistry
Drug Discovery

Background:

Drug-target interaction (DTI) prediction is crucial for drug discovery.
Knowledge representation learning embeds drug knowledge graphs but often overlooks network biases like noise and sparsity.
These biases lead to incomplete semantic representations and suboptimal DTI prediction.

Purpose of the Study:

To propose a novel model, DAH-DTI, to address inherent biases in knowledge graph embedding for improved DTI prediction.
To enhance the accuracy and reliability of predicting potential drug-target interactions.

Main Methods:

Implemented a four-component model: knowledge graph denoising, high-quality negative sample generation, hyperellipsoid embedding using Mahalanobis distance, and DTI link prediction.

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Denoised the knowledge graph to create a high-quality dataset and used adversarial negative sampling for pre-training.

Embedded tail entities into a hyperellipsoid for training the DTI prediction model.

Main Results:

DAH-DTI demonstrated significant improvements in accuracy (ACCU), recall (REC), mean reciprocal rank (MRR), and Hit@10 on a multi-level knowledge graph.
Effectively mitigated challenges posed by data noise, long-tail distribution, data sparsity, and complex relations.
Molecular docking simulations confirmed the reliability of DAH-DTI predictions for AR target interactions.

Conclusions:

DAH-DTI offers a robust approach to overcome inherent biases in network characteristics for knowledge graph embedding.
The model provides a promising strategy for accurate prediction of potential drug-target interactions, advancing drug discovery.
DAH-DTI enhances the semantic representation of knowledge graphs, leading to superior DTI prediction performance.