Higgins, P. A.
Pérez-Suárez, David
Murray, Sophie A.
Maloney, Shane A.
Gallagher, Peter T.
Bloomfield, Shaun
McCloskey, Aoife E.
Roche, Joseph
O'Callaghan, David
O'Neill, Arlene
Ryan, Dan F.
Leka, K.D.
2018-11-07
<p>Second dataset based on automated detections produced by SMART [1] with data between May 1996 and August 2010 and classifications by volunteers through the zooniverse's <a href="https://www.sunspotter.org/">Sunspotter project</a>.<br>
Volunteers had to choose the most complex active region of a pair based on a random selection of the least classified images. Unlike the first round [2], all active regions were scaled to have the same size. Attempting therefore to remove the bias produced by the differences on sizes.</p>
<p>The dataset is composed of five files:</p>
<ul>
<li>lookup_timesfits.csv: lists the filenames and the date of the data acquisition.</li>
<li>lookup_properties.csv: lists the properties about the active region observed in each frame to be classified. Some of the properties as measured by SMART [1]</li>
<li>classifications.csv: lists each classification made by the volunteers.</li>
<li>rankings.csv: lists the final ranking on complexity.</li>
<li>users_links.csv: cross identifiers of users between dataset 2 (this one) and dataset 1 [2].</li>
</ul>
<p>The score provided on the rankings file follows the <a href="https://en.wikipedia.org/wiki/Elo_rating_system">Elo rating system</a>. However, a new score following other selection mechanism is possible using the data available on the classification file.</p>
<p>Though the user's information has been removed, the classifications keep an index to differentiate classifications made by different users.</p>
<p>Some software to ingest the tables into a sqlite database and to obtain some preliminary results are available on <a href="https://github.com/sunspotter/">GitHub</a>.</p>
<p><br>
[1]: DOI: <a href="https://doi.org/10.1016/j.asr.2010.06.024">10.1016/j.asr.2010.06.024</a></p>
<p>[2]: DOI: <a href="https://doi.org/10.5281/zenodo.1478966">10.5281/zenodo.1478966</a></p>
<p> </p>
https://doi.org/10.5281/zenodo.1478972
oai:zenodo.org:1478972
eng
Zenodo
https://doi.org/10.5281/zenodo.1478971
info:eu-repo/semantics/openAccess
Creative Commons Attribution Share Alike 4.0 International
https://creativecommons.org/licenses/by-sa/4.0/legalcode
active regions
sunspots
solar physics
citizen science
zooniverse
Sunspotter - 14 years of SoHO/MDI
info:eu-repo/semantics/other