Dr. Sahar Vahdati

Research Associate sahar
Information Systems Group
University of Oxford

Profiles: LinkedInGoogle ScholarDBLP

Email: vahdati@cs.uni-bonn.de

Short CV


Research Associate at  the Smart Data Analytics Group, Institute for Computer Science III, Rheinische Friedrich-Wilhelms-Universität,  Bonn, Germany (July 2017 – present)

  • Main research areas: Knowledge Management, Knowledge Embedding, Semantic Web, Scholarly Communication Metadata, Semantic Data Integration, Knowledge Graph Integration and Mining, Linked Data, Semantic Web Services, and Web APIs
  • Research projects: OpenAIRE H2020 (Leading Linked Data Team), OpenResearch (Moderator, Main Developer)

Research Associate at  the Intelligent Database Group, Institute for Computer Science III, Rheinische Friedrich-Wilhelms-Universität, Bonn, Germany (October 2012 – present)

  • Main research areas: Intelligent Information Systems, Temporal Information Systems, Deductive Databases (Datalog).

Research Interests


  • Linked Data,  Semantic Web
  • Knowledge Graph Integration
  • Knowldge Graph Embedding
  • Open Data, Semantic Publishing
  • Metadata Management
  • Deductive Databases (Datalog)

Projects


Publications

2021

Fazeli-Varzaneh, Mohsen; Ghorbi, Ali; Ausloos, Marcel; Sallinger, Emanuel; Vahdati, Sahar

Sleeping Beauties of Coronavirus Research Journal Article

In: IEEE Access, 9 , pp. 21192–21205, 2021.

Links | BibTeX

2020

Fathalla, Said; Vahdati, Sahar; Lange, Christoph; Auer, Sören

Scholarly event characteristics in four fields of science: a metrics-based analysis Journal Article

In: Scientometrics, 123 (2), pp. 677–705, 2020.

Links | BibTeX

Nayyeri, Mojtaba; Vahdati, Sahar; Zhou, Xiaotian; Yazdi, Hamed Shariat; Lehmann, Jens

Embedding-Based Recommendations on Scholarly Knowledge Graphs Inproceedings

In: The Semantic Web - 17th International Conference, ESWC 2020, Heraklion, Crete, Greece, May 31-June 4, 2020, Proceedings, pp. 255–270, Springer, 2020.

Links | BibTeX

Bellomarini, Luigi; Sallinger, Emanuel; Vahdati, Sahar

Knowledge Graphs: The Layered Perspective Incollection

In: Knowledge Graphs and Big Data Processing, 12072 , pp. 20–34, Springer, 2020.

Links | BibTeX

Bellomarini, Luigi; Sallinger, Emanuel; Vahdati, Sahar

Reasoning in Knowledge Graphs: An Embeddings Spotlight Incollection

In: Knowledge Graphs and Big Data Processing, 12072 , pp. 87–101, Springer, 2020.

Links | BibTeX

Say, Zeynep; Fathalla, Said; Vahdati, Sahar; Lehmann, Jens; Auer, Sören

Ontology Design for Pharmaceutical Research Outcomes Inproceedings

In: Digital Libraries for Open Knowledge - 24th International Conference on Theory and Practice of Digital Libraries, TPDL 2020, Lyon, France, August 25-27, 2020, Proceedings, pp. 119–132, Springer, 2020.

Links | BibTeX

Nayyeri, Mojtaba; Zhou, Xiaotian; Vahdati, Sahar; Izanloo, Reza; Yazdi, Hamed Shariat; Lehmann, Jens

Let the Margin SlidE for Knowledge Graph Embeddings via a Correntropy Objective Function Inproceedings

In: 2020 International Joint Conference on Neural Networks, IJCNN 2020, Glasgow, United Kingdom, July 19-24, 2020, pp. 1–9, IEEE, 2020.

Links | BibTeX

Nayyeri, Mojtaba; Xu, Chengjin; Vahdati, Sahar; Vassilyeva, Nadezhda; Sallinger, Emanuel; Yazdi, Hamed Shariat; Lehmann, Jens

Fantastic Knowledge Graph Embeddings and How to Find the Right Space for Them Inproceedings

In: The Semantic Web - ISWC 2020 - 19th International Semantic Web Conference, Athens, Greece, November 2-6, 2020, Proceedings, Part I, pp. 438–455, Springer, 2020.

Links | BibTeX

Say, Aysegul; Fathalla, Said; Vahdati, Sahar; Lehmann, Jens; Auer, Sören

Semantic Representation of Physics Research Data Inproceedings

In: Proceedings of the 12th International Joint Conference on Knowledge Discovery, Knowledge Engineering and Knowledge Management, IC3K 2020, Volume 2: KEOD, Budapest, Hungary, November 2-4, 2020, pp. 64–75, SCITEPRESS, 2020.

Links | BibTeX

Nayyeri, Mojtaba; Alam, Mirza Mohtashim; Lehmann, Jens; Vahdati, Sahar

3D Learning and Reasoning in Link Prediction Over Knowledge Graphs Journal Article

In: IEEE Access, 8 , pp. 196459–196471, 2020.

Links | BibTeX

2019

Vahdati, Sahar

Collaborative Integration, Publishing and Analysis of Distributed Scholarly Metadata PhD Thesis

University of Bonn, 2019.

Abstract | Links | BibTeX

Vahdati, Sahar; Fathalla, Said; Auer, Sören; Lange, Christoph; Vidal, Maria-Esther

Semantic Representation of Scientific Publications Inproceedings

In: Digital Libraries for Open Knowledge - 23rd International Conference on Theory and Practice of Digital Libraries, TPDL 2019, Oslo, Norway, September 9-12, 2019, Proceedings, pp. 375–379, Springer, 2019.

Links | BibTeX

Ali, Mehdi; Vahdati, Sahar; Singh, Shruti; Dasgupta, Sourish; Lehmann, Jens

Improving Access to Science for Social Good Inproceedings

In: Machine Learning and Knowledge Discovery in Databases - International Workshops of ECML PKDD 2019, Würzburg, Germany, September 16-20, 2019, Proceedings, Part I, pp. 658–673, Springer, 2019.

Links | BibTeX

Fathalla, Said; Vahdati, Sahar; Auer, Sören; Lange, Christoph

The scientific events ontology of the OpenResearch.org curation platform Inproceedings

In: Proceedings of the 34th ACM/SIGAPP Symposium on Applied Computing, SAC 2019, Limassol, Cyprus, April 8-12, 2019, pp. 2311–2313, ACM, 2019.

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Fathalla, Said; Vahdati, Sahar; Lange, Christoph; Auer, Sören

SEO: A Scientific Events Data Model Inproceedings

In: The Semantic Web - ISWC 2019 - 18th International Semantic Web Conference, Auckland, New Zealand, October 26-30, 2019, Proceedings, Part II, pp. 79–95, Springer, 2019.

Links | BibTeX

González-Beltrán, Alejandra N.; Osborne, Francesco; Peroni, Silvio; Vahdati, Sahar

Editorial: Special Issue on Scholarly Đata Analysis (Semantics, Analytics, Visualisation) Journal Article

In: Data Sci., 2 (1-2), pp. 177–179, 2019.

Links | BibTeX

González-Beltrán, Alejandra N.; Osborne, Francesco; Peroni, Silvio; Vahdati, Sahar

Editorial: Special Issue on Scholarly Data Analysis (Semantics, Analytics, Visualisation) Journal Article

In: Data Sci., 2 (1-2), pp. 177–179, 2019.

Links | BibTeX

2018

Fathalla, Said; Vahdati, Sahar; Auer, Sören; Lange, Christoph

Metadata Analysis of Scholarly Events of Computer Science, Physics, Engineering, and Mathematics Inproceedings

In: Digital Libraries for Open Knowledge, 22nd International Conference on Theory and Practice of Digital Libraries, TPDL 2018, Porto, Portugal, September 10-13, 2018, Proceedings, pp. 116–128, Springer, 2018.

Links | BibTeX

Vahdati, Sahar; Palma, Guillermo; Nath, Rahul Jyoti; Lange, Christoph; Auer, Sören; Vidal, Maria-Esther

Unveiling Scholarly Communities over Knowledge Graphs Inproceedings

In: Digital Libraries for Open Knowledge, 22nd International Conference on Theory and Practice of Digital Libraries, TPDL 2018, Porto, Portugal, September 10-13, 2018, Proceedings, pp. 103–115, Springer, 2018.

Links | BibTeX

Fathalla, Said; Vahdati, Sahar; Auer, Sören; Lange, Christoph

SemSur: A Core Ontology for the Semantic Representation of Research Findings Inproceedings

In: Proceedings of the 14th International Conference on Semantic Systems, SEMANTICS 2018, Vienna, Austria, September 10-13, 2018, pp. 151–162, Elsevier, 2018.

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Behrend, Andreas; Gawlick, Dieter; Vahdati, Sahar; Liu, Zhen Hua

Reasoning Under Situation Awareness in a Temporal Database Inproceedings

In: Second IEEE International Conference on Robotic Computing, IRC 2018, Laguna Hills, CA, USA, January 31 - February 2, 2018, pp. 387–391, IEEE Computer Society, 2018.

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Omar, Rebaz; Vahdati, Sahar; Lange, Christoph; Vidal, Maria-Esther; Behrend, Andreas

SAANSET: Semi-Automated Acquisition of Scholarly Metadata Using OpenResearch.org Platform Inproceedings

In: 12th IEEE International Conference on Semantic Computing, ICSC 2018, Laguna Hills, CA, USA, January 31 - February 2, 2018, pp. 41–48, IEEE Computer Society, 2018.

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Behrend, Andreas; Vahdati, Sahar; Lange, Christoph; Engels, Christiane

Towards a Cloud-Based Service for Maintaining and Analyzing Data About Scientific Events Inproceedings

In: Semantics, Analytics, Visualization - 3rd International Workshop, SAVE-SD 2017, Perth, Australia, April 3, 2017, and 4th International Workshop, SAVE-SD 2018, Lyon, France, April 24, 2018, Revised Selected Papers, pp. 1–14, Springer, 2018.

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2017

Behrend, Andreas; Calvanese, Diego; Cerquitelli, Tania; Chiusano, Silvia; Engels, Christiane; Jean, Stéphane; Kozmina, Natalija; Markhoff, Béatrice; Romero, Oscar; Vahdati, Sahar

New Trends in Databases and Information Systems: Contributions from ADBIS 2017 Workshops Inproceedings

In: New Trends in Databases and Information Systems - ADBIS 2017 Short Papers and Workshops, AMSD, BigNovelTI, DAS, SW4CH, DC, Nicosia, Cyprus, September 24-27, 2017, Proceedings, pp. 111–122, Springer, 2017.

Links | BibTeX

Ameri, Shirin; Vahdati, Sahar; Lange, Christoph

Exploiting Interlinked Research Metadata Inproceedings

In: Research and Advanced Technology for Digital Libraries - 21st International Conference on Theory and Practice of Digital Libraries, TPDL 2017, Thessaloniki, Greece, September 18-21, 2017, Proceedings, pp. 3–14, Springer, 2017.

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Fathalla, Said; Vahdati, Sahar; Lange, Christoph; Auer, Sören

Analysing Scholarly Communication Metadata of Computer Science Events Inproceedings

In: Research and Advanced Technology for Digital Libraries - 21st International Conference on Theory and Practice of Digital Libraries, TPDL 2017, Thessaloniki, Greece, September 18-21, 2017, Proceedings, pp. 342–354, Springer, 2017.

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Fathalla, Said; Vahdati, Sahar; Auer, Sören; Lange, Christoph

Towards a Knowledge Graph Representing Research Findings by Semantifying Survey Articles Inproceedings

In: Research and Advanced Technology for Digital Libraries - 21st International Conference on Theory and Practice of Digital Libraries, TPDL 2017, Thessaloniki, Greece, September 18-21, 2017, Proceedings, pp. 315–327, Springer, 2017.

Links | BibTeX

González-Beltrán, Alejandra N.; Osborne, Francesco; Peroni, Silvio; Vahdati, Sahar

SAVE-SD 2017: Third Workshop on Semantics, Analytics and Visualisation: Enhancing Scholarly Data Inproceedings

In: Proceedings of the 26th International Conference on World Wide Web Companion, Perth, Australia, April 3-7, 2017, pp. 1681–1682, ACM, 2017.

Links | BibTeX

Dimou, Anastasia; Vahdati, Sahar; Iorio, Angelo Di; Lange, Christoph; Verborgh, Ruben; Mannens, Erik

Challenges as enablers for high quality Linked Data: insights from the Semantic Publishing Challenge Journal Article

In: PeerJ Computer Science, 3 , pp. e105, 2017.

Links | BibTeX

2016

Vahdati, Sahar

Facilitating the Management and Analysis of Scholarly Communication Metadata Inproceedings

In: Knowledge Engineering and Knowledge Management - EKAW 2016 Satellite Events, EKM and Drift-an-LOD, Bologna, Italy, November 19-23, 2016, Revised Selected Papers, pp. 278–285, Springer, 2016.

Links | BibTeX

Vahdati, Sahar; Arndt, Natanael; Auer, Sören; Lange, Christoph

OpenResearch: Collaborative Management of Scholarly Communication Metadata Inproceedings

In: Knowledge Engineering and Knowledge Management - 20th International Conference, EKAW 2016, Bologna, Italy, November 19-23, 2016, Proceedings, pp. 778–793, 2016.

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Ghavimi, Behnam; Mayr, Philipp; Vahdati, Sahar; Lange, Christoph

Identifying and Improving Dataset References in Social Sciences Full Texts Inproceedings

In: Positioning and Power in Academic Publishing: Players, Agents and Agendas, 20th International Conference on Electronic Publishing, Göttingen, Germany, June 7-9, 2016, pp. 105–114, IOS Press, 2016.

Links | BibTeX

Dimou, Anastasia; Iorio, Angelo Di; Lange, Christoph; Vahdati, Sahar

Semantic Publishing Challenge - Assessing the Quality of Scientific Output in Its Ecosystem Inproceedings

In: Semantic Web Challenges - Third SemWebEval Challenge at ESWC 2016, Heraklion, Crete, Greece, May 29 - June 2, 2016, Revised Selected Papers, pp. 243–254, Springer, 2016.

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Ghavimi, Behnam; Mayr, Philipp; Lange, Christoph; Vahdati, Sahar; Auer, Sören

A semi-automatic approach for detecting dataset references in social science texts Journal Article

In: Inf. Serv. Use, 36 (3-4), pp. 171–187, 2016.

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2015

Iorio, Angelo Di; Lange, Christoph; Dimou, Anastasia; Vahdati, Sahar

Semantic Publishing Challenge - Assessing the Quality of Scientific Output by Information Extraction and Interlinking Inproceedings

In: Semantic Web Evaluation Challenges - Second SemWebEval Challenge at ESWC 2015, Portorov z, Slovenia, May 31 - June 4, 2015, Revised Selected Papers, pp. 65–80, Springer, 2015.

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Knuth, Magnus; Reddy, Dinesh; Dimou, Anastasia; Vahdati, Sahar; Kastrinakis, George

Towards Linked Data Update Notifications Reviewing and Generalizing the SparqlPuSĦ Approach Inproceedings

In: Proceedings of the Workshop on Negative or Inconclusive Results in Semantic Web, NoISE 2015, Co-located with the 12th Extended Semantic Web Conference (ESWC 2015), Portoroz, Slovenia, June 1st, 2015, CEUR-WS.org, 2015.

Links | BibTeX

Vahdati, Sahar; Lange, Christoph; Auer, Sören

OpenCourseWare observatory: does the quality of OpenCourseWare live up to its promise? Inproceedings

In: Proceedings of the Fifth International Conference on Learning Analytics And Knowledge, LAK '15, Poughkeepsie, NY, USA, March 16-20, 2015, pp. 73–82, ACM, 2015.

Links | BibTeX

Vahdati, Sahar; Karim, Farah; Huang, Jyun-Yao; Lange, Christoph

Mapping Large Scale Research Metadata to Linked Data: A Performance Comparison of HBase, CSV and XML Inproceedings

In: Metadata and Semantics Research - 9th Research Conference, MTSR 2015, Manchester, UK, September 9-11, 2015, Proceedings, pp. 261–273, Springer, 2015.

Links | BibTeX

Knuth, Magnus; Reddy, Dinesh; Dimou, Anastasia; Vahdati, Sahar; Kastrinakis, George

Towards Linked Data Update Notifications Reviewing and Generalizing the SparqlPuSH Approach Inproceedings

In: Proceedings of the Workshop on Negative or Inconclusive Results in Semantic Web, NoISE 2015, Co-located with the 12th Extended Semantic Web Conference (ESWC 2015), Portoroz, Slovenia, June 1st, 2015, CEUR-WS.org, 2015.

Links | BibTeX

2014

Vahdati, Sahar; Behrend, Andreas; Lange, Christoph

Identifying research schools using enriched bibliographical metadata Inproceedings

In: 14th International Conference on Knowledge Management and Data-driven Business, I-KNOW '14, Graz, Austria, September 16-19, 2014, pp. 39:1–39:4, ACM, 2014.

Links | BibTeX

Vahdati, Sahar; Behrend, Andreas; Schüller, Gereon; Manthey, Rainer

A Flexible System for a Comprehensive Analysis of Bibliographical Data Inproceedings

In: WEBIST 2014 - Proceedings of the 10th International Conference on Web Information Systems and Technologies, Volume 1, Barcelona, Spain, 3-5 April, 2014, pp. 143–151, SciTePress, 2014.

Links | BibTeX

0000

Iorio, Angelo Di; Lange, Christoph; Dimou, Anastasia; Vahdati, Sahar

Semantic Publishing Challenge Inproceedings

In: pp. 65–80, 0000.

BibTeX

Dimou, Anastasia; Iorio, Angelo Di; Lange, Christoph; Vahdati, Sahar

Semantic Publishing Challenge Inproceedings

In: pp. 243–254, 0000.

BibTeX