Chrisanna Kate Cornish

Data Scientist: driven by questions, focused on clarity, fuelled by curiosity (and coffee)

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Permanent Danish residency
Fluent English, Conversational Danish

Profile · Education · Key Skills · Experience · About me

Profile

I have a strong instinct for finding what doesn’t add up, whether in a spreadsheet, a workflow, or a model’s output, and a genuine interest in working out why. My MSc thesis put that instinct to use on DeepSeek R1, and found that the model behaved differently in response to a hint without acknowledging the hint in its reasoning. This does not appear to be dishonesty so much as a plausible narrative constructed after the fact, which is a meaningful problem if chain-of-thought reasoning is being relied on as a genuine window into how a model reaches its answers.

Most of my career, including the parts that do not look like data science on paper, has involved the same underlying question: is this system doing what we think it is doing, and what happens to the people affected when it is not? I would like to keep asking that question somewhere it can make a practical difference.

I work best on problems without a clean answer yet, alongside people willing to get into the detail. I would rather work somewhere disagreement is productive and assumptions get challenged than somewhere everyone nods along.

Education

MSc Data Science — ITU Copenhagen — 2023 – 2025

Selected courses: Advanced Applied Statistics; Advanced Machine Learning; Advanced Robotics; Foundations of Game AI; Data Wrangling and Visualising

Research project: Investigating Comparison Reasoning Skills in an LLM

Thesis: Examining the Faithfulness of DeepSeek R1’s Chain-of-Thought Reasoning
  Published in the ACL Anthology, IJCNLP-AACL 2025, CHOMPS workshop

BSc Data Science — ITU Copenhagen — 2020 – 2023

Thesis: Carbon Footprint of Machine Learning Competitions with Medical Images

Key Skills

Technical: Python, R, SQL, machine learning, statistical analysis, Git, Docker, Singularity, Linux, HPC/Slurm, data pipelines, data wrangling, model evaluation, visualisation, LLMs, NLP, LaTex

Professional: Teaching, technical communication, problem-solving, process improvement, details, critical thinking, being a good human,

Experience

Housekeeping & Admin Assistant — AC Bella Sky, Copenhagen — Sept 2025 – present
  • Approved shifts for payroll, monitored housekeeper efficiency. investigating and reporting discrepancies
  • Inspected rooms to ensure standards were met, giving feedback to housekeepers where needed
  • Undertook housekeeping duties in a very large hotel
Teaching Assistant — BSc & MSc Data Science — ITU Copenhagen — Jan 2023 – Jun 2025
  • Supported teaching across machine learning, statistics, large-scale data analysis, data wrangling, and algorithmic fairness
  • Led tutorials, coding sessions, and project supervision for BSc and MSc students
  • Guided model development, evaluation, and debugging using Python, Git, and ML libraries
  • Explained core concepts including overfitting, bias, interpretability, and statistical inference
Income and Payments Assistant — East Devon District Council, UK — Nov 2018 – Aug 2020
  • Managed financial data and payment processes across departments, ensuring accuracy and compliance
  • Improved tracking workflows and maintained documentation standards supporting transparency and collaboration
Admin / Cash Office Manager — Morrisons, Exeter, UK — Jul 2009 – Nov 2018
  • Led the cash office function in the highest-performing store in the area, which was selected as the pilot site for rollout of a new cash office system
  • Supported system implementation across lower-performing stores during regional rollout, including on-site training and transition support
  • Maintained high levels of accuracy and operational consistency in cash handling, reporting, and compliance
  • Later moved to one of the supported stores as Cash Office / Admin Manager, stabilising processes and improving operational performance
Trainee Nurse — Royal Devon and Exeter Hospital, UK — Sep 2006 – Jul 2009
  • Delivered patient care and maintained accurate clinical records in a regulated healthcare environment
  • Worked within strict governance, safety, confidentiality, and multidisciplinary care frameworks

About me

  • I am a Star Trek nerd. TNG vs VOY vs DS9 is one of my favourite discussions.
     ᯓ★ It’s the same federation, being stress-tested in wildly different situations.
  • I knit, sew, crochet, bake, and grow spinach and flowers in my yard.
  • I was awarded “coffee drinker of the semester” in 2024. I still have the mug.
  • I played monsters and NPCs for a LARP group for several years, which led to building a roundhouse.
  • I cannot do spoonerisms at all. This has never once come up professionally.