Class: 141 (Common Redshank), Feature: 728

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	5	The focus is on the legs, beak and throat and belly
Main Object	5	The focus is strongly on the bird's legs in all photos. the definition mentions a bird with long legs for wading and this is where the heaviest red areas are.
Main Object	4	Focus is on legs of redshank
Main Object	4	The highlighted red region is over the legs of the bird, which is the main object.
Main Object	5	The focus of the red region in the highlighted visual attributes is on the legs of the bird.


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