Machine Learning Scientist · Mathematician · Researcher

Marios Koulakis

Geometry For Machine Learning

ABOUT ME

Portrait of Marios Koulakis

I work at the intersection of machine learning, mathematics, and applied AI. My background spans deep learning, computer vision, industrial ML, and mathematical research, with a growing focus on manifold learning and geometric views of representation learning and deep networks.

I am particularly interested in research directions that connect geometry, manifold structure, data analysis, and deep learning theory. At the moment, I am especially interested in collaborations and academic opportunities related to the theory of deep learning.

Manifold Learning Geometry For ML Computer Vision Dimensionality Reduction Reliable AI Teaching
2022–Present

Senior Machine Learning Scientist · DeepHealth

Working on deep learning for lung disease detection, including model development, data selection, and reliability- and regulation-oriented workflows.

2021–2023

Postdoctoral Researcher · Karlsruhe Institute of Technology

Research in computer vision and machine learning, including h-NNE, supervision, and construction-related vision projects.

2019–2021

Data Scientist / Senior Data Scientist · Royal Schiphol Group

Built computer vision and activity-recognition solutions for aircraft handling processes and operational analytics.

2016–2018

Software Engineer / Data Scientist & Engineer · Nulogy

Worked on predictive modeling, optimization, data infrastructure, and AWS-based systems in manufacturing and supply-chain settings.

2015–2016

Software Engineer · ASD Personalinformationssysteme

Full-stack development for scheduling and time-tracking software in an agile environment.

2011–2015

PhD Researcher · University of Münster

Research in mathematical logic and set theory as a Marie Skłodowska-Curie fellow.

Geometry, dimensionality reduction, and structure in data

Manifold Microscope

ICML 2026

Benchmarking datasets and geometric tools for studying simple but real-life-like data manifolds, with a focus on analysis and experimentation.

Hierarchical Nearest Neighbor Graph Embedding for Efficient Dimensionality Reduction

CVPR 2022

A hierarchical dimensionality reduction method designed for efficient and structured visual exploration of high-dimensional data.

Applied AI, anomaly detection, and industrial computer vision

Position: Quo Vadis, Unsupervised Time Series Anomaly Detection?

ICML 2024

A critical perspective on evaluation practices and benchmarking in time series anomaly detection.

Domain-independent Detection of Known Anomalies

CVPR VAND 2.0 2024

Approaches for anomaly detection across previously unseen objects in industrial inspection settings.

Bildbasierte Baufortschrittsüberwachung

Book chapter 2024

Image-based construction progress monitoring in a practical engineering context.

Reliable perception and representation learning

Is My Driver Observation Model Overconfident? Input-Guided Calibration Networks for Reliable and Interpretable Confidence Estimates

IEEE T-ITS 2022

Work on calibration and confidence estimation for driver observation models under real-world deployment shifts.

Affect-DML: Context-Aware One-Shot Recognition of Human Affect using Deep Metric Learning

FG 2021

Context-aware one-shot affect recognition using deep metric learning.

Mathematical logic

Coding into Inner Models at the Level of Strong Cardinals

PhD Thesis

My PhD thesis.

Large Cardinals and Elementary Embeddings of V

Master Thesis

My master thesis.

Manifold Microscope

A benchmarking and experimentation toolkit for studying geometric properties of synthetic and real-life-like data manifolds.

  • Benchmark datasets for manifold analysis
  • Geometry-oriented evaluation tools
  • Public codebase for reproducing the framework and experiments

CVPR 2025 tutorial

Co-organized tutorial on dimensionality reduction, clustering, and structure in data for computer vision and machine learning.

  • Conceptual overview and practical materials
  • Bridges theory, visualization, and applications
  • Part of a broader interest in structure-aware ML

Awesome Dimensionality reduction and Clustering

Curated reading and implementation lists for two closely related toolboxes: dimensionality reduction and clustering.

  • Surveys and landmark methods with paper and code links
  • Frameworks, metrics, and datasets for practical comparison
  • Clustering resources also include theory and cluster-number estimation

h-NNE

A hierarchical dimensionality reduction method related in spirit to t-SNE and UMAP, but designed for speed, simplicity, and structured coarse-to-fine exploration.

  • Built around hierarchical structure in the data
  • Supports interpretable zoom-like exploration
  • Useful for visualization and data analysis