Toward scalable and unbiased scene graph generation: Active learning and causal inference perspectives

Thesis event information

Date and time of the thesis defence

Place of the thesis defence

Online

Topic of the dissertation

Toward scalable and unbiased scene graph generation: Active learning and causal inference perspectives

Doctoral candidate

Doctor of Philosophy Shuzhou Sun

Faculty and unit

University of Oulu Graduate School, Faculty of Information Technology and Electrical Engineering, Center for Machine Vision and Signal Analysis (CMVS)

Subject of study

Visual Understanding and Structured Representation

Opponent

Associate Professor Miaomiao Liu, Australian National University

Custos

Professor Janne Heikkilä, University of Oulu

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Building Visual Relationships with AI: How to Reduce Bias and Save Time

This dissertation addresses machine learning methods used to generate visual structures based on data perceived by computers. Specifically, the study examines two major challenges: how to reduce manual annotations and how to improve the predictability of systems by mitigating prediction biases. This dissertation introduces a novel approach to solve these problems by combining active learning with causal inference.

The study presents a model named EDAL, which reduces the amount of labeled data required and improves predictability with very small data sets. The second part of the research explores how biases in predictions, such as long-tail distributions and semantic errors, can be eliminated through causal methods. This research introduces three causal approaches that enhance prediction accuracy and help create fair systems.
Created 16.11.2025 | Updated 17.11.2025