Class: 94 (Hummingbird), Feature: 1912

MTurk Worker Annotations

We now show the responses from five crowdworkers used to annotate this class-feature pair as core or spurious. Workers first denote if the focus of the image is on the main object (core), or a separate or background object (spurious). They also mark their confidence on a scale of 1 to 5, and provide written explanations for their annotation.



Main Focus	Confidence	Explanation
Main Object	3	Hummingbird's feathers are highlighted.
Main Object	4	The red region mainly focuses on the predicted object but slightly spreads to the background.
Main Object	5	All 5 images have red regions focusing on parts of the main object. there is no other object highlited in red in any of the 5 pictures, and the little overlap the red regions have with the background i've judged insignificant.
Main Object	4	Focus is on the wings and torso of the hummingbird.
Main Object	4	Images mostly focused on some part of the main object.


Votes for core: 5, Votes for spurious: 0. Feature is thus annotated as core for the class.