Salient Imagenet

Class: 623 (Letter Opener), Feature: 750

This feature is core for class Letter Opener. It is the fifth most important feature for class Letter Opener.

Below, we display the five Letter Opener images that most highly activate the feature, along with the Neural Activation Map (heatmap) and Feature Attack for each image. These are the same as the images shown to crowdworkers to annotate this class-feature pair.

We additionally provide the full responses of the five crowdworkers that annotated this pair, as well as links to other related pairs (i.e. same class or same feature).

MTurk Worker Annotations

core

spurious

core

spurious

Main Focus	Confidence	Explanation
Main Object	4	Focus is on the structure of letter opener
Main Object	3	The main obect is paper knife whose some part got focus.
Main Object	5	Focus is on the cutting area of the paper knife
Main Object	5	The focus of the red region in the highlighted visual attributes is on letter opener.
Main Object	5	Focus is on the body and edges of the paper knife.

core

Related Class-Feature Pairs

Important Features for Letter Opener

There are 5 features annotated as core and 0 features annotated as spurious for Letter Opener. Core features include 107, 507, 750, 1281, 1361.

Classes where Feature 750 is among Most Important (i.e. top-5)

Feature 750 is core for the following classes: Can Opener, Cleaver, Hatchet, Ladle, Letter Opener, Screwdriver, Spatula, Syringe.