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Welcome alien overlord! I'm Ludvig Olsen

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I'm an R and python developer with an MSc in Cognitive Science, working as a PhD student at the Department of Molecular Medicine (MOMA) at Aarhus University Hospital. Current projects revolve around detection and localization of cancers from cell-free DNA.

I have worked with deep learning on text at UNSILO and medical imaging data at Cercare Medical.

The goal of my career is to have a very big positive impact on this world of ours! 🌍

R packages

I have developed a set of open source R packages. Feel free to check them out :-)


  • Divide data into groups
  • Create balanced partitions and cross-validation folds
  • Perform time series windowing
  • Balance existing groups with up- and downsampling

  • Cross-validate regression and classification models
  • Evaluate predictions with a tidy output
  • Extract challenging observations
  • Find baselines for a wide range of metrics

  • Generate testthat tests
  • RStudio addins for faster development

  • Rearrrange data points
    - center max value, roll elements, shuffle hierarchy, ...
  • Mutate data points
    - rotate, swirl, cluster, roll values, ...
  • Scaling and measuring utilities
    - MinMax scaling, find angle, find centroid, ...

GitHub stats


  1. groupdata2 Public

    R-package: Methods for dividing data into groups. Create balanced partitions and cross-validation folds. Perform time series windowing and general grouping and splitting of data. Balance existing g…

    R 22 2

  2. cvms Public

    R Package: Cross-validate one or multiple gaussian or binomial regression models at once. Perform repeated cross-validation. Returns results in a tibble for easy comparison, reporting and further a…

    R 31 5

  3. xpectr Public

    R package for generating expectations for `testthat` unit testing

    R 29 1

  4. rearrr Public

    Rearrrange data by a set of methods

    R 11 2

  5. transfrr Public

    Add summary information from one dataframe to the dataframe that has been summarized, given only starting posititions of summarized groups.


  6. utipy Public

    Python utilities, e.g. for pandas


283 contributions in the last year

May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Mon Wed Fri
Activity overview
Contributed to LudvigOlsen/groupdata2, LudvigOlsen/cvms, LudvigOlsen/rearrr and 8 other repositories

Contribution activity

May 2022

LudvigOlsen has no activity yet for this period.

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