Submitting a single term in a keyword expansion tool yields which of the following?

Submitting a single term in a keyword expansion tool yields which of the following?

• A. A List Of Unrelated Terms
• B. A List Of Highly Correlated Terms
• C. A List Of Document IDs
• D. A List Of Random Numbers

Answer: (B)

Keyword expansion relies on how terms relate to each other in a text collection. When you submit a single term, the tool looks for terms that are strongly associated with it in that corpus and returns those related terms. That’s why the result is a list of highly correlated terms—they reflect words that tend to appear in the same contexts or share similar meanings. This approach helps broaden a query by including synonyms, related concepts, and common variants, which can improve recall in searching or indexing. For example, if the input is a topic like “photosynthesis,” you’d expect related terms such as “chlorophyll,” “light reactions,” or “Calvin cycle” to appear, because they frequently occur together or in the same discussions. Unrelated terms wouldn’t be useful for expansion, and a list of document IDs or a list of random numbers wouldn’t provide meaningful keywords to broaden the search.

Keyword expansion relies on how terms relate to each other in a text collection. When you submit a single term, the tool looks for terms that are strongly associated with it in that corpus and returns those related terms. That’s why the result is a list of highly correlated terms—they reflect words that tend to appear in the same contexts or share similar meanings.

This approach helps broaden a query by including synonyms, related concepts, and common variants, which can improve recall in searching or indexing. For example, if the input is a topic like “photosynthesis,” you’d expect related terms such as “chlorophyll,” “light reactions,” or “Calvin cycle” to appear, because they frequently occur together or in the same discussions.

Unrelated terms wouldn’t be useful for expansion, and a list of document IDs or a list of random numbers wouldn’t provide meaningful keywords to broaden the search.