Philipp Christmann
Postdoctoral Researcher at CISPA Helmholtz Center for Information Security
Saarbrücken, Saarland, Germany
Summary
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Senior🎓
Top SchoolPhilipp Christmann is a postdoctoral researcher at CISPA with nine years of experience bridging academic research and applied AI, focused on improving the interaction between large language models and external tools to boost factuality, security, and traceability. He completed a PhD at the Max Planck Institute for Informatics where his work combined knowledge graphs, question answering, and conversational systems under leaders Rishiraj Saha Roy and Gerhard Weikum. Philipp has hands-on industry experience from an Applied Science internship at Amazon on retrieval-augmented generation, giving him practical insight into production-scale AGI components. Based in Saarbrücken, he blends deep theoretical grounding with engineering pragmatism and a track record of shipping research-driven prototypes. Notably, his trajectory shows a sustained focus on making knowledge representations usable in conversational settings—translating structured knowledge into reliable, auditable language-model behavior.
9 years of coding experience
2 years of employment as a software developer
Doctor of Philosophy - PhD, Computer Science, Doctor of Philosophy - PhD, Computer Science at Universität des Saarlandes
Github Skills (28)
speech10
artificial-intelligence9
datasets9
natural-language-processing9
huggingface9
nlp9
computer-vision9
deep-learning8
pandas8
ai8
tensorflow8
machine-learning8
llm8
pytorch8
sparql7
Programming languages (4)
Github contributions (5)
PhilippChr/CLOCQ
Feb 2022 - Dec 2022
Code for our WSDM 2022 paper. CLOCQ is a framework which allows efficient access to knowledge bases (KB) for functionalities related to question answering (QA). CLOCQ can retrieve a set of relevant facts from the KB for a given user question. Further, it provides efficient retrieval of KB-neighborhoods, KB-connectivities and labels, aliases etc.
Contributions:16 commits, 24 pushes, 1 branch in 9 months
question-answeringqaknowledge-baseknowledge-graphnamed-entity-disambiguation
PhilippChr/FiD
May 2022 - May 2023
Fusion-in-Decoder -> To run on standard CPU/GPU
Contributions:7 pushes in 11 months
cudacpugpuaccelerationdecoder
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