Tag Archive | Coleman Krawczyk

Explore Galaxy Zoo Classifications

This post (and visualization) is by Coleman Krawczyk, a Zooniverse Data Scientist at the ICG at the University of Portsmouth

Today we’ve added another new tool for visualizing Galaxy Zoo, this time showing the full vote path of all users for each galaxy from GZ2 onward.  The first node of the visualization shows an image of the galaxy and each of the other nodes represents the answer to a question from the Galaxy Zoo decision tree, and the size of the node is proportional to the number of votes for that answer.  The maximal vote path is highlighted and also shown in words across to top of the tree, and the results of the “Is there anything odd?” question are shown across the bottom.
The full Galaxy Zoo catalog can be searched via Zooniverse ID (the same one used for Talk), RA and Dec, or randomly.  After picking a galaxy the nodes can be moved around by clicking and dragging, and the links can be collapsed/expanded by clicking the attached nodes, both of these functions are useful for untangling complex trees.  Various properties of the visualization can also be controlled with the sliders below the tree.  For a guided tour of this tool click the “Take a tour” button, and for a full list of features click the “Help” button.
Screenshot of the Visualisation Tool

Screenshot of the Visualisation Tool