Class: 634 (Sawmill), Feature: 1752

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	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 red areas are on the sawmill and the wood it is milling.
Main Object	4	The red region in the highlighted visual attributes focuses on the part of a sawmill.
Main Object	5	The red area is focusing n the sawmill itself.
Main Object	5	The focus of the red region in the highlighted visual attributes is on the wood on the lumbermill.


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