Author: Christopher Lazik

FONDA PHD student Sarah Kleest-Meißner successfully defends her PhD thesis on “Exploring the Complexity of Event Query Discovery”

Sarah Kleest-Meißner, research group “Logic in Computer Science” at HU Berlin’s computer science department, successfully defended her PhD thesis on September 10, 2024. She proposed an expressive, theoretical query model for sequence data based on subsequences and patterns with variables which captures the core of Complex Event Processing (CEP) languages. Based thereon, she presented an algorithm for solving the task of discovering a query that describes best a given finite set of finite sequences of events. The theoretical basis of her query model enabled a comprehensive analysis of the complexity of event query discovery, whereas a prototypical implementation and an experimental evaluation with synthetic and real-world datasets complemented the formal results.

Congratulations!

FONDA PHD student Masoud Jami successfully defends his PhD thesis on “Optimizing Checkpoint/Restart and Input/Output for Large Scale Applications”

Masoud Jami, né Gholami, of ZIB successfully defended his PhD thesis at the Institute of Computer Science, Humboldt-Universität zu Berlin on October 10, 2024. He enhanced C/R techniques by reducing overhead by more than 10% compared to state-of-the-art, and outperforms Reed-Solomon codes by combining XOR and partner checkpointing in terms of resiliency and computational overhead. His IOSIG plugin for GCC adds pragma annotations to specify I/O characteristics of certain streams, enabling injected code to choose optimal devices during runtime. His accurate I/O models of the Linux kernel that consider page caching behavior estimate I/O costs with over 80-90% accuracy.

Congratulations!

FONDA x Workflows Community Initiative


Since FONDA’s research is focussed on the area of Data Analysis Workflows, we are interested in working with researchers from the community. Therefore, we are especially grateful to spotlight our ongoing collaboration with the Workflows Community Initiative. The Workflows Community Initiative (WCI) is a community-centered effort for gathering and promoting long-standing and recent community-focused efforts. Learn More about WCI here.

FONDA x METIS

We are happy to share that FONDA is a partner of METIS. METIS is a freely available website project providing advice on how to promote gender equality, family friendliness, diversity, and anti-discrimination in research alliances at Humboldt-Universität zu Berlin and at Charité. Learn more about METIS here.

FONDA at Dagstuhl 6.3.-10.3.

In the week from March 5 to March 10 FONDA researchers met with experts from the field of testing and debugging to talk about “Testing and Debugging of Data Analysis Workflows” at Schloss Dagstuhl – Leibniz Center for Informatics. During the 5 days, the participants discussed several subtopics both in the whole group and in breakout groups. We were able to collect a huge amount of ideas and possible research questions. All the new forged ideas will be published in upcoming papers.

We are thankful to all the participants and are looking forward to upcoming cooperations with them: