Oliver Hennhöfer

Oliver Hennhöfer

Unsupervised Learning & Uncertainty Quantification

PhD candidate & Research Associate · Karlsruhe University of Applied Sciences

Portrait of Oliver Hennhöfer

Goals

CV

  1. Karlsruhe University of Applied Sciences2023 – now
    • PhD Candidateongoing
      • Working title: Operationalizing Conformal Anomaly Detection: Scoring, Calibration, Error Control, and Deployment Beyond Idealized Conditions.
    • Lecturer2023 – 26
      • Unsupervised Learning (M.Sc.)
      • Data Science (M.Sc.)
      • Software Engineering (B.Sc.)
      • Environmental Monitoring (B.Sc.)
    • Research Associate, Intelligent Systems Research Group2023 – now
      • Research on uncertainty quantification for anomaly detection in data streams, with a focus on conformal inference and statistical error control.
      • Lead developer of off-key within BiFlex-Industrie: set technical direction and priorities, write most of the code, and supervise student contributors.
      • Author of the open-source Python packages nonconform, online-fdr and aberrant.
  2. INIT Group2021 – 2023
    • Software Engineer, Machine Learning2022 – 23
      • Built a cloud-based, real-time application for public transport.
      • Sole responsibility for the machine-learning pipeline predicting passenger numbers.
    • Business Analyst, Project Coordination2021 – 22
  3. Disy Informationssysteme2020
    • Master’s Thesis Research
      • Applied geostatistics and spatial econometrics to anomaly detection in environmental data.
      • Deployed the methods through an API and improved the project’s data preprocessing.
  4. 1&1 IONOS2018 – 2020
    • Working Student, Data Analysis2019 – 20
    • Working Student, Quality Assurance2018 – 19
  5. Karlsruhe University of Applied Sciences2018 – 2021
    • Student Research Assistant, Statistics with R2018 – 21
    • M.Sc. Geomatics2018 – 20
      • Thesis: Anomaly Detection in Precision Farming with R.
      • Coursework in programming, software engineering, spatial databases, geostatistics, web services and open-source GIS.
  6. Modus Consult Gericke2015 – 2016
    • Intern, Traffic Statistics
  7. Karlsruhe University of Applied Sciences2013 – 2017
    • B.Sc. Geoinformation Management
      • Thesis: Statistik und Geoanalyse mit R im hochschulischen Kontext.
Printable CV with skills and teaching details →

Skills

Software

Publications

6 publications, 4 as first author. Google Scholar ↗

2026
  1. Between Resolution Collapse and Variance Inflation: Weighted Conformal Anomaly Detection in Low-Data Regimes

    arXivPreprintHennhöfer, Preisach

  2. TalkTag: Fine-Grained Morphosyntactic Error Annotation for Transcribed Speech

    LAW XXWorkshopVenturini, Hennhöfer, Kinkel, Strötgen

  3. Conformal Anomaly Detection in Python: Moving Beyond Heuristic Thresholds with nonconform

    COPA, PMLR 329ConferenceHennhöfer, Kirsch, Preisach

2025
  1. Interdisciplinary Harmonies: A Story-Driven Course on AI and Music to Increase Interest in Computer Science

    ECSEEConferenceMarquardt, Shang, Hennhöfer, Happe

2024
  1. Leave-One-Out-, Bootstrap- and Cross-Conformal Anomaly Detectors

    IEEE ICKGConferenceHennhöfer, Preisach

2021
  1. Multidimensional Exploratory Spatial Data Analysis

    GI_ForumJournalHennhöfer et al.

Perspectives

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19 countries. Austria, China, Croatia, Cuba, Czechia, England, France, Germany, Greece, Italy, Japan, Morocco, New Zealand, Norway, Scotland, Sri Lanka, Sweden, Switzerland, United Arab Emirates.