https://pizza.rs/tags/diversified_sampler/Recent content in Diversified_sampler on INFINI PizzaHugoenhttps://pizza.rs/docs/references/aggregation/bucket/diversified-sampler/Mon, 01 Jan 0001 00:00:00 +0000https://pizza.rs/docs/references/aggregation/bucket/diversified-sampler/<h1 id="diversified-sampler-aggregation"> Diversified sampler aggregation <a class="anchor" href="#diversified-sampler-aggregation">#</a> </h1> <p>Like <a href="https://pizza.rs/docs/references/aggregation/bucket/sampler/"><code>sampler</code></a>, but the sample is diversified by a field — up to one (or few) documents per value — so rare categories survive the sampling. A plain sampler can be flooded by the most common value (every sampled <code>type</code> being <code>t-shirt</code>); the diversified variant guarantees representation for every distinct value first.</p> <h2 id="how-it-works"> How it works <a class="anchor" href="#how-it-works">#</a> </h2> <p>The sampler walks the matching documents in two passes. First it caps each distinct value of the diversify <code>field</code> at <code>max_docs_per_value</code> (default <code>1</code>) — extra documents with an already-full value are dropped. Documents missing the diversify field share one common group. The survivors are then sorted and truncated to the overall <code>shard_size</code> (default <code>100</code>).</p>