Class: 117 (Chambered Nautilus), Feature: 1507

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 highlighted visual attribute is on the shell in each image.
Main Object	5	The main object is an chambered nautilus, pearly nautilus, nautilus. the focus of the red region in the highlighted visual attributes is on the inverterbrates's head and body, showing its main parts. because of that, i choose focus is on some part of the main object.
Main Object	4	The red region in the highlighted visual attributes focuses on the part of a chambered nautilus.
Main Object	5	Focus is highlighting the shell and the entire central animal
Main Object	3	Nautilus is red focused on.


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