Search Results for author: Ralf Lämmel

Found 8 papers, 4 papers with code

From Shapes to Shapes: Inferring SHACL Shapes for Results of SPARQL CONSTRUCT Queries (Extended Version)

1 code implementation13 Feb 2024 Philipp Seifer, Daniel Hernández, Ralf Lämmel, Steffen Staab

However, it becomes challenging to understand what graph data can be expected at the end of a data processing pipeline without knowing the particular input data: Shape constraints on the input graph may affect the output graph, but may no longer apply literally, and new shapes may be imposed by the query template.

AutArch: An AI-assisted workflow for object detection and automated recording in archaeological catalogues

no code implementations29 Nov 2023 Kevin Klein, Alyssa Wohde, Alexander V. Gorelik, Volker Heyd, Ralf Lämmel, Yoan Diekmann, Maxime Brami

The contribution of this paper is a new workflow for collecting data from archaeological find catalogues available as legacy resources, such as archaeological drawings and photographs in large unsorted PDF files; the workflow relies on custom software (AutArch) supporting image processing, object detection, and interactive means of validating and adjusting automatically retrieved data.

Contour Detection object-detection +1

ProGS: Property Graph Shapes Language (Extended Version)

1 code implementation12 Jul 2021 Philipp Seifer, Ralf Lämmel, Steffen Staab

In RDF representations, this error can be addressed by shape languages such as SHACL or ShEx, which allow for checking whether graphs are valid with respect to a set of domain constraints.

Knowledge Graphs Position +1

Seamless Variability Management With the Virtual Platform

1 code implementation28 Feb 2021 Wardah Mahmood, Daniel Strüber, Thorsten Berger, Ralf Lämmel, Mukelabai Mukelabai

Two opposing strategies are commonly used to create variants: software clone & own and software configuration with an integrated platform.

Software Engineering

Ownership at Large -- Open Problems and Challenges in Ownership Management

no code implementations15 Apr 2020 John Ahlgren, Maria Eugenia Berezin, Kinga Bojarczuk, Elena Dulskyte, Inna Dvortsova, Johann George, Natalija Gucevska, Mark Harman, Shan He, Ralf Lämmel, Erik Meijer, Silvia Sapora, Justin Spahr-Summers

Software-intensive organizations rely on large numbers of software assets of different types, e. g., source-code files, tables in the data warehouse, and software configurations.

BIG-bench Machine Learning Management

Understanding What Software Engineers Are Working on -- The Work-Item Prediction Challenge

no code implementations13 Apr 2020 Ralf Lämmel, Alvin Kerber, Liane Praza

Understanding what a software engineer (a developer, an incident responder, a production engineer, etc.)

Tutorial on Online Partial Evaluation

1 code implementation5 Sep 2011 William R. Cook, Ralf Lämmel

This paper is a short tutorial introduction to online partial evaluation.

Programming Languages

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