https://pizza.rs/tags/percentile_ranks/Recent content in Percentile_ranks on INFINI PizzaHugoenhttps://pizza.rs/docs/references/aggregation/metric/percentile-ranks/Mon, 01 Jan 0001 00:00:00 +0000https://pizza.rs/docs/references/aggregation/metric/percentile-ranks/<h1 id="percentile-ranks-aggregation"> Percentile ranks aggregation <a class="anchor" href="#percentile-ranks-aggregation">#</a> </h1> <p>A multi-value metrics aggregation that answers the inverse of <a href="https://pizza.rs/docs/references/aggregation/metric/percentiles/"><code>percentiles</code></a>: for each value you provide, what percentage of documents is at or below it.</p> <h2 id="how-it-works"> How it works <a class="anchor" href="#how-it-works">#</a> </h2> <p>The engine collects every value of the field and sorts it once. For each requested value <code>v</code>, the rank is the fraction of collected values that are less than or equal to <code>v</code>:</p> <pre tabindex="0"><code>rank(v) = count(value &lt;= v) / n * 100 </code></pre><p>The comparison is inclusive — a document exactly at <code>v</code> counts toward its own rank, so the rank of the maximum value is <code>100</code>, not <code>100 − 1/n</code>. With no values at all (empty result set, or every document missing the field) each rank is <code>null</code>.</p>