Ethics Of Artificial Intelligence (AI) Practice Test

What does a cosine similarity score of 0 indicate about two vectors?

No similarity Opposite meanings Identical meaning Moderate similarity

Correct Answer:

Opposite meanings

Explanation:

Cosine similarity measures how much two vectors point in the same direction, ignoring how long they are. A score of 1 means they point the same way, exactly aligned. A score of -1 means they point in opposite directions. A score of 0 means the vectors are perpendicular to each other, with no directional alignment between their features. In other words, there’s no shared orientation in the space the vectors live in, which is what we mean by no similarity in their directions. Opposite meanings would correspond to a cosine similarity of -1, not 0. Identical meaning would be 1, and moderate similarity would be a positive value between 0 and 1.

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