Publications

See Google Scholar for additional details.

* denotes equal contribution

Sub-continental-scale carbon stocks of individual trees in African drylands
Compton J. Tucker*, Martin Brandt*, Pierre Hiernaux*, Ankit Kariryaa*, Kjeld Rasmussen, Jennifer Small, Christian Igel, Florian Reiner, Katherine Melocik, Jesse Meyer, Scott Sinno, Eric Romero, Erin Glennie, Yasmin Fitts, August Morin, Jorge Pinzon, Devin McClain, Paul Moran, Claire Porter, Shane Loefflet, Laurent Kergoat, Jean-Pierre Wigneron, Benjamin Poulter, Philippe Ciais, and Rasmus Fensholt.
Nature 615, 80-86 (2023)
Link | PDF

A consistent assessment of trees inside and outside forests improves estimates of total tree cover in Africa
Florian Reiner, Martin Brandt, Xiaoye Tong, David Skole, Ankit Kariryaa, Philippe Ciais, Andrew Davies, Pierre Hiernaux, Jerome Chave, Maurice Mugabowindekwe, Christian Igel, Stefan Oehmcke, Fabian Gieseke, Sizhuo Li, Siyu Liu, Sassan Saatchi, Peter Boucher, Jenia Singh, Simon Taugourdeau, Morgane Dendoncker, Xiao-Peng Song, Ole Mertz, Compton J. Tucker, Rasmus Fensholt.
Nature Communications 14, 2258 (2023)
Link | PDF

Deep learning enables image-based tree counting, crown segmentation and height prediction at national scale
Sizhuo Li, Martin Brandt, Rasmus Fensholt, Ankit Kariryaa, Christian Igel, Fabian Gieseke, Thomas Nord-Larsen, Stefan Oehmke, Ask Holm-Carlsen, Samuli Junttila, Xiaoye Tong, Alexandre d’Aspremont, Philippe Ciais
PNAS Nexus, pgad076 (2023)
Link | PDF

Detection and mapping of artillery craters with very high spatial resolution satellite imagery and deep learning
Erik C Duncan, Sergii Skakun, Ankit Kariryaa, Alexander V Prishchepov
Science of Remote Sensing 7-100092 (2023)
Link | PDF

Nation-wide mapping of tree level carbon stocks in Rwanda
Maurice Mugabowindekwe, Martin Brandt, Jerome Chave, Florian Reiner, David Skole, Ankit Kariryaa, Christian Igel, Pierre Hiernaux, Philippe Ciais, Ole Mertz, Xiaoye Tong, Sizhuo Li, Gaspard Rwanyiziri, Thaulin Dushimiyimana, Alain Ndoli, Valens Uwizeyimana, Jens-Peter Lillesø, Fabian Gieseke, Compton Tucker, Sassan S Saatchi, Rasmus Fensholt.
Nature Climate Change (2022)
Link | PDF | Code

Allometric Equations to Estimate the Dry Mass of Sahel Woody Plants from Very-High Resolution Satellite Imagery
Pierre Hiernaux, Bil-Assanou Hassane Issoufou, Christian Igel, Ankit Kariryaa, Moussa Kourouma, Jérôme Chave, Eric Mougin, Patrice Savadogo.
Forest Ecology and Management (2022)
Link | PDF

Free as a Bird, but at What Cost? The Impact of Street Networks on the User Experience of As-The-Crow-Flies Navigation for Cyclists
Gian-Luca Savino, Ankit Kariryaa, Johannes Schöning.
MobileHCI 2022: Proceedings of the International Conference on Human-Computer Interaction with Mobile Devices and Service (2022)
Honorable Mention Award
Link | PDF

Understanding user-belief about the privacy threats of browser extensions
Ankit Kariryaa*, Gian-Luca Savino*, Carolin Stellmacher and Johannes Schöning.
SOUPS 2021: Seventeenth Symposium on Usable Privacy and Security, SOUPS pp. 99-118 (2021)
Link | PDF | Slides

OPTIMADE, an API for exchanging materials data
Casper W. Andersen, Rickard Armiento, Evgeny Blokhin, Gareth J. Conduit, Shyam Dwarak- nath, Matthew L. Evans, Ádám Fekete, Abhijith Gopakumar, Saulius Gražulis, Andrius Merkys, Fawzi Mohamed, Corey Oses, Giovanni Pizzi, Gian-Marco Rignanese, Markus Schei- dgen, Leopold Talirz, Cormac Toher, Donald Winston, Rossella Aversa, Kamal Choudhary, Pauline Colinet, Stefano Curtarolo, Davide Di Stefano, Claudia Draxl, Suleyman Er, Marco Esters, Marco Fornari, Matteo Giantomassi, Marco Govoni, Geoffroy Hautier, Vinay Hegde, Matthew K. Horton, Patrick Huck, Georg Huhs, Jens Hummelshøj, Ankit Kariryaa, Boris Kozinsky, Snehal Kumbhar, Mohan Liu, Nicola Marzari, Andrew J. Morris, Arash Mostofi, Kristin A. Persson, Guido Petretto, Thomas Purcell, Francesco Ricci, Frisco Rose, Matthias Scheffler, Daniel Speckhard, Martin Uhrin, Antanas Vaitkus, Pierre Villars, David Waroquiers, Chris Wolverton, Michael Wu, Xiaoyu Yang.
Scientific Data 8, 217 (2021)
Link | PDF | API

An unexpectedly large count of trees in the West African Sahara and Sahel
Martin Brandt, Compton J. Tucker, Ankit Kariryaa, Kjeld Rasmussen, Christin Abel, Jennifer Small, Jerome Chave, Laura Vang Rasmussen, Pierre Hiernaux, Abdoul Aziz Diouf, Laurent Kergoat, Ole Mertz, Christian Igel, Fabian Gieseke, Johannes Schöning, Sizhuo Li, Katherine Melocik, Jesse Meyer, Scott Sinno, Eric Romero, Erin Glennie, Amandine Montagu, Morgane Dendoncker, Rasmus Fensholt.
Nature 587, 78–82 (2020)
Link | Popular Science Commentary | Remarkable Discoveries 2020 | Code

The Role of Flag Emoji in Online Political Communication
Ankit Kariryaa, Simon Rundé, Hendrik Heuer, Andreas Jungherr, Johannes Schöning.
Social Science Computer Review (2020)
Link | PDF

MoiPrivacy: Design and evaluation of a Personal Password Meter
Ankit Kariryaa, Johannes Schöning.
MUM 2020: In the 19th International Conference on Mobile and Ubiquitous Multimedia, pp. 201-211 (2020)
Link | PDF

Defining and Predicting the Localness of Volunteered Geographic Information using Ground Truth Data
Ankit Kariryaa, Isaac Johnson, Johannes Schöning, Brent Hecht
CHI’ 18: In Proceedings of the 2018 CHI Conference on Human Factors in Computing Systems (2018)
Link | PDF On