2026 — GISVIEW MAP →
Accessibility of Recreational Green Spaces in Nantes: The 10-Minute Walking City and Its Blind Spots
Can Nantes residents reach a public leisure green space within a 10-minute walk? Mapping coverage and four kinds of blind spot.
( 01 ) — SPATIAL NARRATIVE
Reading cities as layered terrain, one contour at a time.
Distilling the complex weave of population, land, and spatial movement into clear, simple stories and maps to inform decision-making.
- 12
- Years mapping
- 40+
- Maps shipped
- 3
- Working langs
NOTEBOOKCITY · PLANNING · LIFE
( 02 ) — SELECTED WORK
Maps that carry a decision.
2026 — GISVIEW MAP →
Cycling–Transit Intermodality Analysis
300-metre interchange coverage between cycle routes and TAN stops across Nantes Métropole.
2026 — GISVIEW MAP →
Senior healthcare accessibility in Nantes
Doctors, pharmacies and older residents within a 10-minute walk.
2026 — GISVIEW MAP →
Childcare supply and demand in Nantes, 2032
Spatial gaps between existing crèches and projected demand among children aged 0–2.
2026 — GISVIEW MAP →
Spatial Analysis of the Digital Divide
Fibre coverage × population density in Loire-Atlantique.
2026 — GIS · PYTHONVIEW MAP →
Seeing Quality Early Education: An Interactive Kindergarten Finder for Tainan and Its Future
An interactive map of public and private kindergartens across Tainan, with locations and contact details.
2026 — GISVIEW MAP →
Bus transit deserts in Tainan City
Locating high-density residential neighbourhoods left beyond the reach of the existing bus network.
2026 — GISVIEW MAP →
Projected population change in Tainan, 2024–2036
A shrinking old city and a polarising new one: where Tainan loses and gains residents.
( 03 ) — PROFILE
Chun-ya LIU, PhD
SOCIO-ECONOMIC STUDIES & GIS SPECIALIST
From Tainan, Taiwan, and living in France for over 15 years, with a PhD in land planning, masters in demography and geography, as well as in national development. I specialise in online platform building and database management, cartographic analysis, AI spatial model training and GIS technical training — and I am dedicated to applying spatial-analysis methods in socio-economic research.
BASED — NANTES, FR
EU LONG-TERM RESIDENT
LANGUAGES
- Chinese · TaiwaneseZH · NATIVE
- FrenchFR · FLUENT
- EnglishEN · IELTS 6.5
EXPERIENCE
GeoAI Spatial Data Specialist — Scale AI (Remote)
2026Geospatial AI & LLM Alignment (RLHF): Evaluated, fine-tuned, and benchmarked generative AI and frontier models, with a specialized focus on spatial reasoning, geostatistics, and GIS workflows.
Geo-statistician — Gérontopôle des Pays de la Loire
2023 — 2025Built and ran Cart'âge, an online mapping platform and territorial database on ageing — grown from nothing to 2,200+ indicators. Trained 50+ public-sector users and published regular regional demographic analyses.
cart-age.gerontopole-paysdelaloire.fr ↗Mandarin Lecturer — Université Lumière Lyon 2
2015–2017 · 2020–2022Taught simplified Chinese to French university students, 200 hours per year.
Doctoral Researcher — Ministry of Education, Taiwan (Grant)
2017 — 2020Research on Taiwan's urban development: political regimes, economic development and urban growth. PhD thesis in Geography, supervised by Natacha Aveline — Université Paris 1 Panthéon-Sorbonne, 2020.
theses.fr/2020PA01H015 ↗
EDUCATION
PhD, Land PlanningUniversité Paris 1 Panthéon-Sorbonne
2014–2020M2 GeographyUniversité Paris Cité
2012–2013M2 DemographyUniversité Paris Cité
2011–2012MA National DevelopmentNational Taiwan University
2005–2008BA Public AdministrationNational Chi Nan University
2002–2005Associate Degree in FrenchWenzao Ursuline University of Languages
1997–2002
TECHNICAL SKILLS
GIS TOOLS
QGISArcGISGéoclipGeoDaGoogle Earth Pro
DATABASE
SQLPostgreSQL/PostGIS
STATISTICS
RSPSSExcel
DATA / WEB VISUALISATION
TableauPower BIIllustratorPhotoshopCanvaLovable
PUBLICATIONS
- Liu, C. Y. (2026). How Much Does the Classifier Matter? A Cluster-Aware Comparison of Six Machine Learning Algorithms for Land Use Land Cover Mapping of Taipei, Taiwan, Using Google Earth Engine and Python. ICCK Journal of Image Analysis and Processing, 2(4), 252-276. (Open Access) doi.org/10.62762/JIAP.2026.490298 ↗
- Liu, Cy., Arora, A. Decadal analysis and simulation of land use and land cover changes in Taiwan using machine learning and Markov chain models. Environ Dev Sustain (2024). (SCI, Impact Score: 5.6) doi.org/10.1007/s10668-024-05859-w ↗