Class: 731 (Plunger), Feature: 953

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 red zone marks the joint of the handle and plunger. this part is the important part in plunger. training the ai to find this part is a nice supervisory teaching. the joint is the portion of the main part so chose the focus falls in the part of the main object
Main Object	4	Focus is on the bottom part of the plunger.
Main Object	5	Focus is on the rubber of the plunger.
Main Object	4	Based on images 1-5.
Main Object	3	It mostly focus on the joint of stick with rubber suction cup


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