Johannes Hoffart

Principal Researcher, SAP

Researcher, Saarland Informatics Campus, Max-Planck Institute

Joined

July 2019

Names

Johannes Hoffart

Emails

****@hoffart.ai (Confirmed)

****@sap.com (Confirmed)

Personal Links

Career & Education History

Principal Researcher

SAP (sap.com)

2021 – Present

Researcher

Saarland Informatics Campus, Max-Planck Institute (mpi-inf.mpg.de)

2015 – Present

Researcher

Goldman Sachs (gs.com)

2019 – 2021

CEO

Ambiverse (ambiverse.com)

2015 – 2018

PhD student

Saarland Informatics Campus, Max-Planck Institute (mpi-inf.mpg.de)

2010 – 2015

Advisors, Relations & Conflicts

Coworker

Luciano Del Corro

2019 – Present

PhD Advisor

Gerhard Weikum

2010 – 2015

Expertise

knowledge base

knowledge graph

knowledge graph embeddings

2010 – Present

information extraction

large language models

2010 – Present

entity linking

entity disambiguation

knowledge graph construction

2009 – Present

Publications

PluRel: Synthetic Data unlocks Scaling Laws for Relational Foundation Models
Vignesh Kothapalli, Rishabh Ranjan, Valter Hudovernik, Vijay Prakash Dwivedi, Johannes Hoffart, Carlos Guestrin, Jure Leskovec
- ICLR 2026 Workshop DATA-FM
- Readers: Everyone
SALT-KG: A Benchmark for Semantics-Aware Learning on Enterprise Tables
Isaiah Onando Mulang', Felix Sasaki, Tassilo Klein, Jonas Kolk, Nikolay Grechanov, Johannes Hoffart
- AITD@EurIPS 2025 Oral
- Readers: Everyone
PORTAL: Scalable Tabular Foundation Models via Content-Specific Tokenization
Marco Spinaci, Marek Polewczyk, Johannes Hoffart, Markus C. Kohler, Sam Thelin, Tassilo Klein
- TRL @ NeurIPS 2024 Poster
- Readers: Everyone
SALT: Sales Autocompletion Linked Business Tables Dataset
Tassilo Klein, Clemens Biehl, Margarida Costa, Andre Sres, Jonas Kolk, Johannes Hoffart
- TRL @ NeurIPS 2024 Poster
- Readers: Everyone
CHOLAN: A Modular Approach for Neural Entity Linking on Wikipedia and Wikidata
Manoj Prabhakar Kannan Ravi, Kuldeep Singh, Isaiah Onando Mulang, Saeedeh Shekarpour, Johannes Hoffart, Jens Lehmann
- 2021 (modified: 03 Nov 2022)
- EACL 2021
- Readers: Everyone
RECON: Relation Extraction using Knowledge Graph Context in a Graph Neural Network
Anson Bastos, Abhishek Nadgeri, Kuldeep Singh, Isaiah Onando Mulang, Saeedeh Shekarpour, Johannes Hoffart, Manohar Kaul
- 2021 (modified: 22 Jun 2021)
- WWW 2021
- Readers: Everyone
KGPool: Dynamic Knowledge Graph Context Selection for Relation Extraction
Abhishek Nadgeri, Anson Bastos, Kuldeep Singh, Isaiah Onando Mulang, Johannes Hoffart, Saeedeh Shekarpour, Vijay Saraswat
- 2021 (modified: 22 Jun 2021)
- CoRR 2021
- Readers: Everyone
Evaluating the Impact of Knowledge Graph Context on Entity Disambiguation Models
Isaiah Onando Mulang, Kuldeep Singh, Chaitali Prabhu, Abhishek Nadgeri, Johannes Hoffart, Jens Lehmann
- 2020 (modified: 19 Sept 2023)
- CIKM 2020
- Readers: Everyone
RECON: Relation Extraction using Knowledge Graph Context in a Graph Neural Network
Anson Bastos, Abhishek Nadgeri, Kuldeep Singh, Isaiah Onando Mulang, Saeedeh Shekarpour, Johannes Hoffart
- 2020 (modified: 22 Jun 2021)
- CoRR 2020
- Readers: Everyone
Unsupervised Extraction of Market Moving Events with Neural Attention
Luciano Del Corro, Johannes Hoffart
- 2020 (modified: 22 Jun 2021)
- CoRR 2020
- Readers: Everyone

View all 43 publications

Co-Authors

View all 69 co-authors