Salient Imagenet

Class: 623 (Letter Opener), Feature: 507

This feature is core for class Letter Opener. It is the fourth 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 overlapped with stem of the letter opener and the cloth on which its kept.
Main Object	5	Focus is on the body part of the letter opener
Main Object	5	Focus is on the needle of the letter opener
Main Object	5	The focus of the red region in the highlighted visual attributes is on letter opener.
Main Object	4	Focus on the tail of letter opener

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 507 is among Most Important (i.e. top-5)

Feature 507 is core for the following classes: Broom, Drumstick, Hammer, Hatchet, Ladle, Letter Opener, Maraca, Matchstick, Plunger, Shovel, Spatula, Spindle, Mop, Wooden Spoon.
Feature 507 is spurious for the following classes: Eraser.