3 papers
cs.DB2025
How Good are Learned Cost Models, Really? Insights from Query Optimization Tasks
Roman Heinrich, Manisha Luthra, Johannes Wehrstein +2
Traditionally, query optimizers rely on cost models to choose the best execution plan from several candidates, making precise cost estimates critical for efficient query execution.…
astro-ph.IM2024
Detailed Analysis of Local Climate at the CTAO-North Site on La Palma from 20 Years of MAGIC Weather Station Data
Markus Gaug, Alessandro Longo, Stefano Bianchi +8
The Observatorio del Roque de los Muchachos will host the northern site of the Cherenkov Telescope Array Observatory (CTAO), in an area about 200 m below the mountain rim, where th…
cs.DC2024
COSTREAM: Learned Cost Models for Operator Placement in Edge-Cloud Environments
Roman Heinrich, Carsten Binnig, Harald Kornmayer +1
In this work, we present COSTREAM, a novel learned cost model for Distributed Stream Processing Systems that provides accurate predictions of the execution costs of a streaming que…