Olaf Hartig
@olafhartig.bsky.social
Senior Associate Professor in Computer Science at Linköping University • Amazon Scholar • research on data management topics related to graph data and data on the Web
https://olafhartig.de
https://olafhartig.de
Reposted by Olaf Hartig
@olafhartig.bsky.social och hans forskargrupp har en vision om att man ska kunna samla information som i dag ligger utspridd på webben inom en organisation. Det ska ske virtuellt, så att varje aktör behåller kontrollen över sin egen information #forskning #vetenskap
tinyurl.com/z9ds5ku8
tinyurl.com/z9ds5ku8
Nyckeln till framtidens smarta informationshantering | Knut och Alice Wallenbergs Stiftelse
En stor mängd av den information som företag, myndigheter eller konsumenter behöver komma åt ligger i dag utspridd på nätet hos olika aktörer. Av olika skäl är det inte alltid möjligt att slå samman o...
tinyurl.com
June 19, 2025 at 11:39 AM
@olafhartig.bsky.social och hans forskargrupp har en vision om att man ska kunna samla information som i dag ligger utspridd på webben inom en organisation. Det ska ske virtuellt, så att varje aktör behåller kontrollen över sin egen information #forskning #vetenskap
tinyurl.com/z9ds5ku8
tinyurl.com/z9ds5ku8
Reposted by Olaf Hartig
@olafhartig.bsky.social and his #research team have a vision that we should be able to bring together information that is currently scattered across the Web by integrating the info virtually so that each player retains control over their own information #science @liu.se
tinyurl.com/yssef6u3
tinyurl.com/yssef6u3
The key to smart information management | Knut and Alice Wallenberg Foundation
Much of the information that businesses, public agencies or consumers need to access is currently in the hands of multiple players spread across the Internet. For various reasons, it is not always pos...
tinyurl.com
June 19, 2025 at 11:37 AM
@olafhartig.bsky.social and his #research team have a vision that we should be able to bring together information that is currently scattered across the Web by integrating the info virtually so that each player retains control over their own information #science @liu.se
tinyurl.com/yssef6u3
tinyurl.com/yssef6u3
Super glad to receive the Best Research Paper Award at #ESWC2025 together with Sitt Min Oo for our work on providing a formal foundation for mapping languages for Knowledge Graph construction.
June 5, 2025 at 4:42 PM
Super glad to receive the Best Research Paper Award at #ESWC2025 together with Sitt Min Oo for our work on providing a formal foundation for mapping languages for Knowledge Graph construction.
June 4, 2025 at 8:16 PM
Related to our approach to represent and to query lists as composite values in RDF-based Knowledge Graphs, I developed a tool to convert RDF files in which lists are represented as RDF collections (rdf:List) into files that use our cdt:List approach.
Repo and download: github.com/hartig/SPARQ...
Repo and download: github.com/hartig/SPARQ...
April 20, 2025 at 8:03 PM
Related to our approach to represent and to query lists as composite values in RDF-based Knowledge Graphs, I developed a tool to convert RDF files in which lists are represented as RDF collections (rdf:List) into files that use our cdt:List approach.
Repo and download: github.com/hartig/SPARQ...
Repo and download: github.com/hartig/SPARQ...
Reposted by Olaf Hartig
Researching graph databases, SPARQL engines, or stores for Knowledge Graphs? Submit to TGDK Special Issue: Data Management for (Knowledge) Graphs. Deadline July 1st, 2025. Resources, experience reports and extended workshop/conference papers welcome. CfP: bit.ly/4luAUXZ
TGDK - CfP Special Issue: Data Management for (Knowledge) Graphs
TGDK - CfP Special Issue: Data Management for (Knowledge) Graphs
bit.ly
April 14, 2025 at 4:13 PM
Researching graph databases, SPARQL engines, or stores for Knowledge Graphs? Submit to TGDK Special Issue: Data Management for (Knowledge) Graphs. Deadline July 1st, 2025. Resources, experience reports and extended workshop/conference papers welcome. CfP: bit.ly/4luAUXZ
So far, declarative mapping languages for knowledge graph construction (RML and the likes) have lacked a solid formal foundation 😶🌫️
⚡ Our latest work, accepted for #ESWC2025, changes that: We introduce an algebra for mappings, provide a formal semantics for RML, and more.
🔎 arxiv.org/abs/2503.10385
⚡ Our latest work, accepted for #ESWC2025, changes that: We introduce an algebra for mappings, provide a formal semantics for RML, and more.
🔎 arxiv.org/abs/2503.10385
An Algebraic Foundation for Knowledge Graph Construction (Extended Version)
Although they exist since more than ten years already, have attracted diverse implementations, and have been used successfully in a significant number of applications, declarative mapping languages fo...
arxiv.org
March 26, 2025 at 8:31 AM
So far, declarative mapping languages for knowledge graph construction (RML and the likes) have lacked a solid formal foundation 😶🌫️
⚡ Our latest work, accepted for #ESWC2025, changes that: We introduce an algebra for mappings, provide a formal semantics for RML, and more.
🔎 arxiv.org/abs/2503.10385
⚡ Our latest work, accepted for #ESWC2025, changes that: We introduce an algebra for mappings, provide a formal semantics for RML, and more.
🔎 arxiv.org/abs/2503.10385
📣 We are looking to expand the Program Committee for this year's CoopIS conference and are calling for self- nominations. If interested, please nominate yourself: forms.gle/CYGYkeqVDBLR... ✍️
ℹ️ More info about CoopIS'25, the 31st Int. Conf. on Cooperative Information Systems: coopis.scitevents.org
ℹ️ More info about CoopIS'25, the 31st Int. Conf. on Cooperative Information Systems: coopis.scitevents.org
CoopIS, 31st Int'l. Conf. on Cooperative Information Systems
Knowledge Graphs, Data, Information, and Knowledge Engineering, Inductive Learning, Machine-Learning and Knowledge Discovery, Process Analytics and Technology, Semantic Interoperability and Open Standards, Human-centric Security and Privacy in Information Systems, Internet of Things and Digital Twins, Architecture and Management of Information Systems, Human Aspects and Social Interaction in Information Systems, Services and Cloud in Information Systems, Applications of Human-centric Information Systems in a Digital World, Software Engineering for Information Systems
coopis.scitevents.org
March 19, 2025 at 8:09 AM
📣 We are looking to expand the Program Committee for this year's CoopIS conference and are calling for self- nominations. If interested, please nominate yourself: forms.gle/CYGYkeqVDBLR... ✍️
ℹ️ More info about CoopIS'25, the 31st Int. Conf. on Cooperative Information Systems: coopis.scitevents.org
ℹ️ More info about CoopIS'25, the 31st Int. Conf. on Cooperative Information Systems: coopis.scitevents.org
In a recent #Dagstuhl seminar we developed a research roadmap towards Computer-Using Personal Agents (CUPAs), automating complex tasks like today's Computer-Using Agents, but including context via controlled access to personal knowledge graphs. Our vision paper: openaccess.city.ac.uk/id/eprint/34...
City Research Online - Towards Computer-Using Personal Agents
openaccess.city.ac.uk
March 12, 2025 at 3:04 PM
In a recent #Dagstuhl seminar we developed a research roadmap towards Computer-Using Personal Agents (CUPAs), automating complex tasks like today's Computer-Using Agents, but including context via controlled access to personal knowledge graphs. Our vision paper: openaccess.city.ac.uk/id/eprint/34...
I just saw that DBLP (@dblp.org) has recently started to provide a public query service for everyone to run SPARQL queries over their database with information about computer science publications. Each author page includes links to relevant example queries. Very nice!
blog.dblp.org/2024/09/09/i...
blog.dblp.org/2024/09/09/i...
March 2, 2025 at 11:38 AM
I just saw that DBLP (@dblp.org) has recently started to provide a public query service for everyone to run SPARQL queries over their database with information about computer science publications. Each author page includes links to relevant example queries. Very nice!
blog.dblp.org/2024/09/09/i...
blog.dblp.org/2024/09/09/i...
Reposted by Olaf Hartig
January 31, 2025 at 6:14 PM
Arrived at Castle Dagstuhl for a week of discussions around "Trust and Accountability in Knowledge Graph-Based AI for Self Determination" www.dagstuhl.de/25051
January 26, 2025 at 4:04 PM
Arrived at Castle Dagstuhl for a week of discussions around "Trust and Accountability in Knowledge Graph-Based AI for Self Determination" www.dagstuhl.de/25051
Interested in translating from the recently-standardized graph database language GQL to Gremlin ? Next Monday (Nov.25), the Tinkerpop community has a talk for you.
discord.gg/tinkerpop?ev...
discord.gg/tinkerpop?ev...
Join the Apache TinkerPop Discord Server!
Apache TinkerPop is an open source graph computing framework and the home of the Gremlin graph query language. | 1333 members
discord.gg
November 21, 2024 at 12:08 AM
Interested in translating from the recently-standardized graph database language GQL to Gremlin ? Next Monday (Nov.25), the Tinkerpop community has a talk for you.
discord.gg/tinkerpop?ev...
discord.gg/tinkerpop?ev...
I have heard the waters here are calmer. Ready to start new.
November 19, 2024 at 9:31 PM
I have heard the waters here are calmer. Ready to start new.