DBTG News
DBTG internal News
News list
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DBTG Meeting April.24.2023
Jamal will present his current research work with title : "Challenges in Estimating Predictability Upper Bound of a Time Series ".
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DBTG Meeting April.17.2023
Loris will present his BSc thesis work entitled : "Integration of Matrix Transposition into Database Systems ".
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DBTG Meeting April.03.2023
Amir will present his research work entitled : "Correlation Joins over Time Series Data Streams ".
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DBTG Meeting March.27.2023
Xinyu will present his MSc Thesis work entitled : "In-place Iterations in RDBMS".
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11th DBTG Retreat 2023:
Date: 03.02.2023 - 05.02.2023
Place: Hotel Oberwir, Feldthurns, Italy
General Chairs: Prof. Dr. Michael Böhlen (University of Zürich), Prof. Dr. Johann Gamper (Free University of Bozen-Bolzano), Prof. Dr. Nikolaus Augsten (University of Salzburg)
Local Chair: Prof. Dr. Johann Gamper (Free University of Bozen-Bolzano)
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VLDB Talk Sept.06.2022
Qing will present: "Dynamic Spanning Trees for Connectivity Queries on Fully-dynamic Undirected Graphs".
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DBTG Meeting Sept.5.2022
Lukas will present his MSc Thesis work entitled : "Optimization of Lempel-Ziv Entropy Rate Estimator for Numerical Time Series".
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DBTG Meeting August.10.2022
Andrin will present his BSc Thesis work entitled : "Orthogonal Recursive Bisection on the GPU for Accelerated Load Balancing in Large N-Body Simulations".
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DBTG Meeting May.30.2022
Qing will give a talk from his research on : "Revisit: dynamic spanning trees for connectivity queries on undirected fully-dynamic graphs".
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DBTG Meeting May.16.2022
Saad will give a talk from his research on : "Finding the application of Multi-Point Incremental Fourier Transform (MPIFT) Algorithm in Radio Astronomy".
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DBTG Meeting May.02.2022
Jamal will give a talk from his research on : "Quantifying and Computing Predictability Upper Bound of Univariate Time series".
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DBTG Meeting April.11.2022
Andris presented his thesis entitled : "Digital Message in a Bottle".
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DBTG Meeting March.21.2022
Nicoletta will present her thesis entitled : "Indexing Videos Containing Human Motion in the Form of Dance".
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DBTG Meeting March.14.2022
Laura will present her thesis entitled : "Exhaustive enumeration of variable-length motifs in time series".
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DBTG Meeting March.07.2022
Amir will give a talk on : "Identifying All-Pair Correlations in Time Series Data Streams".
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DBTG Meeting Feb.21.2022
Xiaozhe will defend his MSc thesis : "Implementing Learned Cardinality Estimation in a Database Systems Context".
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DBTG Meeting Dec.07.2021
Qing will present his research work on: "Dynamic Spanning Trees for Connectivity Queries on Fully-dynamic Undirected Graphs".
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DBTG Meeting Nov.23.2021
Jamal will present his current research on: "Numeric Time Series Predictability".
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DBTG Meeting Nov.16.2021
Amir will present his current research on: "Identifying All-Pair Correlations in Time Series Data Streams".
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DBTG Meeting Nov.09.2021
Saad will present his work: "Multi Point Incremental Fourier Transform on 2D Data Streams".
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DBTG Meeting Nov.02.2021
Alphonse Mariyagnanaseelan will defend his thesis: "Transitioning between data and schema values in MonetDB".
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DBTG Meeting 26.05.2021
Saad will present: "Multi Point Incremental Fourier Transform".
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DBTG Meeting 12.05.2021
Jamal will present: "Intrinsic Predictability of Symbolic Univariate Time series".
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DBTG Meeting 05.05.2021
Neeraj Kumar, Nivedita Nivedita and Xiaozhe Yao will present: "Implementing learned indexes on 1-dimensional and 2-dimensional data".
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DBTG Meeting 28.04.2021
Qing will present: "Dynamic Spanning Tree for Connectivity Queries on Undirected Fully-Dynamic Graphs".
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ICDE Talk 21.04.2021
Saad presents: "Single Point Incremental Fourier Transform on 2D Data Streams".
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DBTG Meeting 21.04.2021
Tobias Egger will present: "Scalable Exploratory Analyses of Feed Data".
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DBTG Meeting 14.04.2021
Kevin will present: "Scalable Content-and-Structure (CAS) Indexing".
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DBTG Meeting 31.03.2021
Amir will present: "Identifying All-Pair Correlations in Time Series Data Streams".
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DBTG Meeting 16.02.2021
Alex Schindler defends his MSc thesis: "Different Approaches to Supporting Connectivity Queries on Undirected Fully-Dynamic Graphs".
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DBTG Meeting 15.12.2020
Jamal will present: "Effect of Smoothing on Complexity of Time series and Prediction Performance".
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DBTG Meeting 01.12.2020
Saad will present: "Convolved Incremental Fourier Transform over 2D-Data Streams".
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DBTG Meeting 17.11.2020
Amir will present: "Computing All-Pair Correlations in Time Series Data Stream".
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DBTG Meeting 03.11.2020
Qing will present: "Euler Tour Representation for dynamic connectivity query".
The presentation takes place at 14:00 in BIN 2.E.18 (and on Zoom).
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DBTG Meeting 20.10.2020
Kevin will present: "Hierarchical Context-Dependent Partitioning of Large Disk-Resident Datasets".
The presentation takes place at 14:00 in BIN 2.E.18.
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DBTG Meeting 06.10.2020
Luka Popovic will defend this MSc thesis titled "Supporting Updates in the RCAS Index".
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DBTG Meeting 01.09.2020
Dominique Hässig and Marc Rettenbacher will defend their BSc theses.
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DBTG Meeting 25.08.2020
Johann Schwabe will defend this BSc thesis titled "A GPU-enabled Single-Point Incremental Fourier Transform".
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DBTG Meeting 18.08.2020
Thomas Mannhart will defend this BSc thesis titled "A General-purpose Range Join Algorithm for PostgreSQL".
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DBTG Meeting 28.05.2019
Saad will present: "Improving Complexity of Incremental Fourier Transform".
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DBTG Meeting 14.05.2019
Kevin will present "Content-and-Structure Indexing of JSON Documents".
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DBTG Meeting 07.05.2019
Nicolas Spielmann will present his BSc thesis, titled "Implementation of Single-Point Discrete Fourier Transform on two dimensional data".
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DBTG Meeting 16.04.2019
Oksana will present "AIDA, MADlib, and R for Combined Queries".
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DBTG Meeting 04.12.2018
Yvonne will present "Tuple-Based Functions in Ongoing Databases".
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Katerina's PhD Defense
On 16 November 2018 Katerina Papaioannou successfully defended her PhD thesis.
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DBTG Meeting 06.11.2018
Katerina will present "Negation in Temporal-Probabilistic Databases".
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DBTG Meeting 23.10.2018
Oksana will present "Evaluation of matrix operations defined over relations".
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DBTG Meeting 09.10.2018
Saad will present "Single Point Fourier Transform on Streaming Data".
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DBTG Meeting 25.09.2018
Timothy Pescatore will present his BSc thesis "Integration of Ongoing Integers into PostgreSQL".
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DBTG Meeting 18.09.2018
Claudio Brasser and Alphonse Mariyagnanaseelan will defend their BSc theses.
The title of Claudio Brasser's thesis is "Implementation and Performance Evaluation of multi dimensional Fast Fourier Transform Algorithms on Streaming Data using Apache Flink".
The title of Alphonse Mariyagnanaseelan's thesis is "Optimization of Mixed Queries in MonetDB System"
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DBTG Meeting 26.06.2018
Valentin Weiss will present his BSc thesis "Development of a Dynamic Web Application".
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DBTG Meeting 29.05.2018
Yvonne Mülle will give a talk on "What makes the difference? Difference Function for ongoing time intervals".
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DBTG Meeting 15.05.2018
Kevin Wellenzohn will give a talk on "Performance Evaluation of the Workload-Aware Property Index (WAPI)".
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DBTG Meeting 17.04.2018
Muhammad Saad will give a talk on "ASKAP Stream Processing using Apache Flink".
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DBTG Meeting 20.03.2018
Oksana Dolmatova will give a talk on "Empirical Evaluation of Relational Matrix Algebra".
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DBTG Meeting 06.03.2018
Katerina Papaioannou will give a talk on "Outer Joins and Anti Join in Temporal Probabilistic Databases".
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DBTG Meeting 12.12.2017
Muhammad Saad will give a talk on "Fourier transformation on stream data".
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DBTG Meeting 21.11.2017
Katerina Papaioannou will give a talk on "Temporal Probabilistic Databases with Rich Tuple Correlations".
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DBTG Meeting 14.11.2017
Noah Berni will defend his thesis on "Linear Optimization in Relational Databases".
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DBTG Meeting 07.11.2017
Kevin Wellenzohn will give a talk on "A Workload-Aware Index for Tree-Structured Data".
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DBTG Meeting 17.10.2017
Georgios Garmpis will give a talk on "Integrating Linear Optimization into Relational Database Systems".
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DBTG Meeting 10.10.2017
Lukas Yu will defend his BSc thesis on "Integration of Generally Valid Predicates into PostgreSQL".
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DBTG Meeting 03.10.2017
Yvonne Mülle will give a talk on "Functions and Predicates on Ongoing Data Types".
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DBTG Meeting 19.09.2017
Oksana Dolmatova will give a talk on "A Relational Matrix Algebra and its Implementation in a Column Store".
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DBTG Meeting 04.07.2017
Mirko Richter and Dzmitry Katsiuba will present their BSc thesis on "Lineage-Enhanced Temporal Aggregation" and "QR decomposition integration in MonetDB system" respectively.
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National Research Programme 75 "Big Data"
The National Research Programme 75 “Big Data” (NRP 75) approved Michael Böhlen’s and Abraham Bernstein’s application for a project on Privacy Preserving, Peta-scale Stream Analytics for Domain-Experts. http://www.nfp75.ch/en/Pages/Home.aspx
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DBTG Meeting 27.09.2016
Jasmin Ebner will present his BSc Thesis on "Temporal Integrity Constraints in Databases With Ongoing Timestamps"
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DBTG Meeting 20.09.2016
Melina Mast will present his BSc Thesis on "Implementing an Index Structure for Streaming Time Series Data"
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PhD Thesis Defense 23.08.2016
Francesco Cafagna successfully defended his PhD Thesis entitled "Levering Sort-Merge for processing temporal data".
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DBTG Meeting: Semester Overview
All meetings start at 14:00 o' clock in room 2.A.10.
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PhD Thesis Defence 29.05.2015
Mourad Khayati will defend his PhD Thesis "Recovery of Missing Values using Matrix Decomposition Techniques" on May, 29 15:45-16:45 in room 1.D.06.
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DBTG Meeting: 14.07.2015
BSc Thesis: Temporal Filtering to Improve Temporal Duplicate Detection
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PhD Thesis Defense
Anton Dignös will defend his PhD Thesis entitled "Interval-Dependent Attributes in Relational Database Systems"
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WWW 2015: Accepted Paper
Pei Li's paper "Robust Group Linkage" has been accepted at the World Wide Web Conference '15.