Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
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A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Alien categories with corresponding feature values for categorization.
| Category | Feature 1 | Feature 2 | Feature 3 | Feature 4 |
|---|---|---|---|---|
| A1 | 1 | 1 | 1 or 2 | 1 or 2 |
| A2 | 1 | 2 | 1 or 2 | 1 or 2 |
| B1 | 2 | 1 or 2 | 1 | 1 or 2 |
| B2 | 2 | 1 or 2 | 2 | 1 or 2 |
Features for which one feature value is given are relevant for categorizing a stimulus as a member of the category; features with two possible values are irrelevant for the category.
