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Original file line number | Diff line number | Diff line change |
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[[discover-search-for-relevance]] | ||
== Search for relevance | ||
Sometimes you might be unsure which documents best match your question. | ||
Sometimes you might be unsure which documents best match your search. | ||
{es} assigns a relevancy, or score to each document, so you can | ||
can narrow your search to the documents with the most relevant results. | ||
The higher the score, the better it matches your query. | ||
|
||
For example, suppose you have the <<gs-get-data-into-kibana, sample flights data set>>, and you're a searching for | ||
a flight that arrived or departed from `Warsaw` or `Venice` when the weather was clear. | ||
This example shows how to use *Discover* to list | ||
your documents from most relevant to least relevant. This example uses | ||
the <<gs-get-data-into-kibana, sample flights data set>>, or you can use your own data. | ||
|
||
. In *Discover*, open the index pattern dropdown, and select `kibana_sample_data_flight`. | ||
. In the query bar, click *KQL*, and switch to the <<lucene-query, Lucene query syntax>>. | ||
. Search for `Warsaw OR Venice OR Clear`. | ||
. If you don't see any results, open the time filter and select a time range that contains data. | ||
. From the list of *Available fields*, add `_score` to the document table. | ||
. In the document table, click the header for the `_score` column, and then sort the column by descending scores. | ||
. In *Discover*, open the index pattern dropdown, and select that data you want to work with. | ||
+ | ||
The results are currently sorted by first `Time`, and then by `_score`. | ||
. To sort only by `_score`, remove the `Time` field. | ||
For the sample flights data, set the index pattern to *kibana_sample_data_flights*. | ||
. In the query bar, click *KQL*, and then turn it off. | ||
+ | ||
Your table now shows documents with the best matches, from most to least relevant. | ||
You're now using the <<lucene-query, Lucene query syntax>>. | ||
. Run your search. For the sample data, try: | ||
+ | ||
```ts | ||
Warsaw OR Venice OR Clear | ||
``` | ||
. If you don't see any results, expand the <<set-time-filter,time range>>, for example to *Last 7 days*. | ||
. From the list of *Available fields*, add `_score` and any other fields you want to the document table. | ||
. To sort the `_score` column in descending order, hover over its header, and then click twice on | ||
the arrow icon | ||
image:images/double-arrow.png[Double arrow icon to indicate sorting] so it changes to | ||
image:images/downward-arrow.png[Downward pointing arrow to indicate descending sorting]. | ||
+ | ||
At this point, you're doing a multi-column sort: first by `Time`, and then by `_score`. | ||
. To turn off sorting for the `Time` field, hover over its header, and then click the down arrow. | ||
+ | ||
Your table now sorts documents from most to least relevant. | ||
+ | ||
[role="screenshot"] | ||
image::images/discover-search-for-relevance.png["Example of a search for relevance"] |
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