Vasileios Vittis
PhD Student
Manning College of Information and Computer Sciences
University of Massachusetts Amherst
vvittis [at] cs [dot] umass [dot] edu
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Vasileios Vittis
PhD Student vvittis [at] cs [dot] umass [dot] edu |
I am a PhD student at UMass Amherst, advised by Alexandra Meliou and Peter J. Haas, together with Azza Abouzied of NYU Abu Dhabi. My research is on in-database prescriptive analytics, in particular the incremental maintenance of package queries under evolving data and constraints [project]. More broadly, I am interested in database systems, query optimization, and machine learning for data management. Lately, I am exploring the trust layer for agentic data systems: keeping automated decisions provably correct as data and models change.
Before UMass, I completed an MEng/BSc in Electrical and Computer Engineering at the Technical University of Crete, working with Antonios Deligiannakis on random forests under data drift.
Dominance-Based Data Reduction for Package Queries.
Vasileios Vittis, Azza Abouzied, Peter J. Haas, Alexandra Meliou.
Demonstration Paper, VLDB 2026
[paper]
[live demo],
NEDB'26 [poster],
NEDB'23 [poster].
Online Maintenance of Random Forests over Big Data Streams on Apache Flink MEng thesis, TUC, Greece, 2021. [thesis]
Ph.D., Computer Science, University of Massachusetts Amherst, 2022–present.
M.S., Computer Science, University of Massachusetts Amherst, 2022–2024.
M.Eng. / B.Sc., Electrical and Computer Engineering, Technical University of Crete, 2021.
Teaching Assistant, UMass Amherst:
COMPSCI 645: Database Design and Implementation (Spring 2026), with
Marco Serafini.
COMPSCI 445: Information Systems (Fall 2026), with
Neha Makhija.