I'm Gabriel Budel — also known as Gaby Budel — an Applied Scientist at Uber with a Ph.D. in Artificial Intelligence and Network Science from TU Delft. My Ph.D. research focused on embeddings of complex networks and the roles of complementarity and similarity in these embeddings, with applications to semantic networks and NLP. My interests include artificial intelligence, machine learning, causal inference, hyperbolic graph embeddings, deep learning, and NLP.

Publications

2024
Random hyperbolic graphs in d + 1 dimensions. Budel, G., M. Kitsak, R. Aldecoa, K. Zuev, and D. Krioukov. Physical Review E 109(5), 054131. doi code
2024
DBHC: Discrete Bayesian HMM Clustering. Budel, G., F. Frasincar, and D. Boekestijn. International Journal of Machine Learning and Cybernetics, 1–16. doi code
2023
Topological properties and organizing principles of semantic networks. Budel, G., Y. Jin, P. Van Mieghem, and M. Kitsak. Nature Scientific Reports 13(1), 11728. doi
2020
Detecting the number of clusters in a network. Budel, G. and P. Van Mieghem. Journal of Complex Networks 8(6), cnaa047. doi
2018
Predicting user flight preferences in an airline E-shop. Budel, G., L. Hoogenboom, W. Kastrop, N. Reniers, and F. Frasincar. In: Mikkonen T., Klamma R., Hernández J. (eds) Web Engineering. ICWE 2018. Lecture Notes in Computer Science, vol 10845. Springer, Cham. doi

Working Papers

2026
Complementarity in Complex Networks. Budel, G. and M. Kitsak. arXiv:2003.06665 code
2026
How science gets by with a little help from the Beatles: Detecting cultural wordplay in scientific literature using large language models. Budel, G., R.E. Kooij, and M. Tjepkema. code data

Ph.D. Thesis

2024
Complementarity and Similarity in Complex Networks. Budel, G.J.A. doi

Presentations

2023
Complementarity vs. Similarity in Semantic Networks Regular talk at NetSci 2023, Vienna, Austria, July 2023.
2021
Random Hyperbolic Graphs in d + 1 Dimensions Regular talk at the 10th International Conference on Complex Networks and their Applications, Madrid, Spain, December 2021.
2018
Predicting User Flight Preferences in an Airline E-Shop Full paper at the 18th International Conference on Web Engineering 2018, Cáceres, Spain, June 2018.

Software

2025
Complementarity-based HyperLink Embedder Budel, G. and M. Kitsak bitbucket
2022
RHG Generator Budel, G. and M. Kitsak bitbucket
2018
DBHC Budel, G. and F. Frasincar · R package cran
2018
FX Trading NEAT Budel, G. github

Experience

2025–
Scientist Uber, Amsterdam, Netherlands, Nov 2025 – Present
2023–25
Data Scientist KPN, Amsterdam, Netherlands, Dec 2023 – Oct 2025
2019–23
Ph.D. Researcher Technische Universiteit Delft, Delft, Netherlands, Aug 2019 – Oct 2023

Education

2019–24
Ph.D. in Artificial Intelligence and Network Science Delft University of Technology · In collaboration with KPN in the NExTWORKx program
2018–19
Advanced Language Program Mandarin Chinese Fudan University, Shanghai, China · non-degree
2017–18
M.Sc. in Finance & Investments Rotterdam School of Management
2016–18
M.Sc. in Econometrics & Management Science Erasmus University Rotterdam · Specialization in Business Analytics & Quantitative Marketing
2013–16
B.Sc. in Econometrics & Operations Research Erasmus University Rotterdam · Major in Business Analytics & Quantitative Marketing