Guillaume Chero

Data Scientist

After several years in different research institutes worldwide as PhD student and data scientist, I decided to offer my skills to institutional and private projects. Interested in developing tools in R and Python, I am always happy to learn new methods and skills to stay at the cutting edge of the field. Don't hesitate to contact me to talk about your project: guillaumecherodatascience@gmail.com !

Resume

Here's all the stuff I do

Data analyses with R and Python, R package or Shiny, sky is the limit!

Data analyses and Visualization

Data cleaning
Data collation
Data preparation before specific analyses
Modelisation (gam, glm, distance sampling, etc.)
Vizualisation with ggplot2 or Matplotlib

R package

Creation R package
Documentation and website creation (pkgdown)
Custom function
Testing and maintenance

Shiny App

Creation of interactive web apps straight from R
Automation your task online
Results visualization
Deployement online

Server setup and Docker

Server creation and management
Shiny maintenance
Docker Containerization
Setup Rstudio session with high RAM capacity

Automate report

Quarto
Rmarkdown

Python

Big data management
Creation function and workflow

Here’s some stuff I made recently.

Get Segment

A Shiny App to linearize and segment effort table for distance sampling.

pelascope

R package to realize Megascope analyses.

Atlantic Whale Deal

Data analysis: large data collation, modelisation, and data cleaning.

Visualization AWD

A Shiny App to review AWD area and distribution.

Pedagogic Tools

Training tools to present good practices in R: GIT, Quarto & R project.

pelachat

Pelachat is a Python tool that allows you to set up an LLM to create a chatbot.

Contribution to science

Publications

Radchuk, V., Jones, C.V., McLean, N., et al. Changes in phenology mediate vertebrate population responses to temperature globally. Nat Commun (2026). https://doi.org/10.1038/s41467-025-68172-8
Chero, G., Pradel, R., Derville, S., Bonneville, C., Gimenez, O., & Garrigue, C. (2020). Reproductive capacity of an endangered and recovering population of humpback whales in the Southern Hemisphere. Marine Ecology Progress Series, 643, 219-227.
Chero, G., Plard, F., Virgili, A., Lambert, C. & Authier, M. Dealing with data heterogeneity in strip width estimation for rare species - the advantage of fusion models for basin-scale data collations (in preparation).

Conferences

Chero, G., Clobert, J., Jenouvrier S., Reed, T., Kramer-Schadt, S. & Radchuk, V. (2019). Effect of population characteristics on population stability in a fluctuating environment: simulation study. Mathematical Models in Ecology and Evolution. Lyon, France. Poster
Chero, G., Pradel, C., Gimenez, O., & Garrigue, C. (2017). Could increased rates explain the recovery of the New-Caledonian humpback whales ? Society of Marine Mammalogy, Halifax, Canada. Poster

Reports

Authier, M., Ballutaud, M., Brevet, M., Chero, G., Doray, M., Dubroca, L., Genu, M. (2024) Cartes des zones de co-occurence des dauphins et de leurs principales proies dans le golfe de Gascogne. Ref. WP2. Livrable L.231. DELMOGES
G. Chero, F. Plard, M. Authier, M. Correia, E. De Loose, M. Fernandez, E. Hamard, R. Valente, A. Virgili and C. Lambert, Geopackages of ship lanes per season in the Atlantic, 2025, Atlantic Whale Deal Project (InterReg Atlantic Area)
Plard F., Chero G., Authier M., Virgili A., Correia M., De Loose E., Díaz López B., Fernandez M., Magalhaes S., Hamard E., Rodríguez-Juncá A., Lambert C., Geopackages of fin, minke, sperm and beaked whales’ density distributions per season in the Atlantic, 2025, Atlantic Whale Deal Project (InterReg Atlantic Area)

Contact me

Let's get in touch

If you have any specific needs, don't hesitate to contact me. Sky is the limit!