Mikael Vejdemo-Johansson RSS Feed
https://figshare.com/authors/Mikael_Vejdemo_Johansson/456994
RSS feed for Figshare Profile Mikael Vejdemo-JohanssonSupplementary material for Fibres of Failure
https://figshare.com/articles/dataset/Supplementary_material_for_Fibres_of_Failure/6476426
Supplementary material for the paper Fibres of Failure.Topology, Applied Statistics2018-06-11 09:10:51[Poster] Certified Mapper: obstructions and good covers
https://figshare.com/articles/poster/_Poster_Certified_Mapper_obstructions_and_good_covers/6297071
Poster for the IMA Conference Bridging Statistics and Sheaves, and for the Abel Symposium 2018.Pure Mathematics not elsewhere classified, Applied Mathematics not elsewhere classified2018-05-29 14:52:36Maple worksheet for Weighted Growth Functions of B3
https://figshare.com/articles/software/Maple_worksheet_for_Weighted_Growth_Functions_of_B3/5375431
Maple worksheet performing the calculation of a growth function for Charney's automatic structure of B3Pure Mathematics not elsewhere classified2017-09-05 16:15:57Tieknot grammar brochure
https://figshare.com/articles/dataset/Tieknot_grammar_brochure/2060184
This is a brochure illustrating the notation used in More ties than we thought (2015) PeerJ Computer Science DOI: 10.7717/peerj-cs.2Applied Discrete Mathematics, Computational Logic and Formal Languages2016-01-04 11:09:53Visualization of the World Color Survey webapp
https://figshare.com/articles/software/Visualization_of_the_World_Color_Survey_webapp/1317345
This is a visualization tool for the world color survey using Python Mapper [MB].
The zip-file contains a full repository of the web application code, setup to unpack into a web server hierarchy starting with /var/www. It contains webpages with the visualization engine, datasets derived from the World Color Survey [WCS], a CGI script to glue the visualization engine to Python Mapper, and a copy of the Python Mapper code.
The whole setup depends on Python 2 (2.7 or later recommended), with the additional libraries colormath, scipy, numpy, matplotlib installed.
[MB] Daniel Müllner and Aravindakshan Babu, Python Mapper: An open-source toolchain for data exploration, analysis and visualization, 2013, URL http://danifold.net/mapper
[WCS] Berlin, B., Maffi, L., Merrifield, W. R., & Cook, R. (2009). The world color survey. Stanford, California: CSLI Publications. Data accessed at http://www1.icsi.berkeley.edu/wcs/. Linguistics, Computer Software2015-02-25 15:07:32World Color Survey visualization web app
https://figshare.com/articles/dataset/World_Color_Survey_visualization_web_app/1317339
This is a full distribution of a webapp for visualizing the World Color Survey using Mapper.
The zip archive contains all files used, including the PyMapper library [MB]. It will distribute into the /var/www library of a file system, and includes a README-file with technical details for getting file permissions right.
The app depends on a Python 2 installation (2.7 or later), with the colormath, matplotlib, numpy and scipy additional libraries.
[MB] Daniel Müllner and Aravindakshan Babu, Python Mapper: An open-source toolchain for data exploration, analysis and visualization, 2013, URL http://danifold.net/mapperLinguistics, Computer Software2015-02-25 14:49:45In-order incremental Vietoris-Rips construction
https://figshare.com/articles/dataset/In_order_incremental_Vietoris_Rips_construction/1305769
Timing and growth rate data, as well as python scripts with a reference implementation and with testing functionality for the in-order incremental Vietoris-Rips constructions as proposed in Vejdemo-Johansson and Skraba: Vietoris-Rips and persistent homology of streaming data (2015). Theoretical Computer Science, Geometry, Computer Software, Distributed Computing2015-02-12 13:03:07Random Tie Knots webpage
https://figshare.com/articles/software/Random_Tie_Knots_webpage/1300138
This is the entire website for generating random tie knots from the enumeration by Hirsh-Patterson-Sandberg-Vejdemo Johansson.Design, Algebra, Computation Theory and Mathematics2015-02-03 20:40:38Lecture notes, IMA seminar 23 October 2014
https://figshare.com/articles/journal_contribution/Lecture_notes_IMA_seminar_23_October_2014/829576
Lecture notes for the seminar talk at the Institute of Mathematics and its Applications, 23 October 2014, on approaching a topos-theoretic foundation for persistent homology.Geometry2013-10-22 17:32:06Earth Mover's Distance on World Color Survey language response vectors
https://figshare.com/articles/dataset/Earth_Mover/796378
Computing the Earth Mover's Distance (EMD) metric on language response vectors of the World Color Survey (WCS) is a significant undertaking even with sophisticated computational tools. Still, the distance measure is more appropriate for research into the WCS than many of the easier accessible choices.
In this dataset, we publish a precomputed version of the EMD distance matrix for use by researchers, as well as a collection of scripts code libraries we have developed for interacting with the WCS.Anthropology2013-09-11 10:59:34