Class: 845 (Syringe), Feature: 768

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 overlaps with the background.
Main Object	5	The red areas are all on the syringe.
Separate Object	5	The first image does not contain the main object, so the red region overlaps with the other object (pencil) shown. images 2, 3, 4 and 5 the red region overlaps with the main object, with no overlapping with other objects. there is no overlapping in between a red region and the background in all five images.
Main Object	4	All of the pictures has athe main area highted in red, but one of the pictures does not have a syringe in it.
Main Object	4	Most of these pictures highlight the main body of a syringe


Votes for core: 4, Votes for spurious: 1. Feature is thus annotated as core for the class.