Class: 558 (Flute), Feature: 1361

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 of the red region in the highlighted visual attributes is on the flute.
Main Object	5	The main object is an flute, transverse flute. the focus of the red region on the highlighted visual attributes is on the flute, showing its main parts. because of that, i choose that focus is on some part of the main object.
Main Object	5	The red areas are focused on the flute in every image.
Main Object	4	The red region mainly focuses on the predicted object but slightly spreads to the background and doesn't cover it fully.
Main Object	5	The focus is on the middle of the flute.


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