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minor fix

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ashwinkumar12345 2021-08-16 12:04:23 -07:00
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_opensearch/rest-api/explain.md
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@ -155,7 +155,7 @@ Field | Description
`matched` | Indicates if the document is a match for the query.
`explanation` | The `explanation` object has three properties: `value`, `description`, and `details`. The `value` shows the result of the calculation, the `description` explains what type of calculation is performed, and the `details` shows any subcalculations performed.
Term frequency (`tf`) | How many times the term appears in a field for a given document. The more times the term occurs the higher is the relevance score.
Inverse document frequency (`idf`) | How often the term appears within the index (across all the documents). The more often the term appears the lower the relevance score.
Inverse document frequency (`idf`) | How often the term appears within the index (across all the documents). The more often the term appears the lower is the relevance score.
Field normalization factor (`fieldNorm`) | The length of the field. OpenSearch assigns a higher relevance score to a term appearing in a relatively short field.
The `tf`, `idf`, and `fieldNorm` values are calculated and stored at index time when a document is added or updated. The values might have some (typically small) inaccuracies as it’s based on summing the samples returned from each shard.