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Release new docs
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Milvus-doc-bot authored and Milvus-doc-bot committed Sep 12, 2023
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10 changes: 9 additions & 1 deletion v2.3.x/site/en/reference/index.md
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Expand Up @@ -191,7 +191,9 @@ Similar to IVF_FLAT, GPU_IVF_FLAT also divides vector data into `nlist` cluster

By adjusting `nprobe`, an ideal balance between accuracy and speed can be found for a given scenario. Results from the [IVF_FLAT performance test](https://zilliz.com/blog/Accelerating-Similarity-Search-on-Really-Big-Data-with-Vector-Indexing) demonstrate that query time increases sharply as both the number of target input vectors (`nq`), and the number of clusters to search (`nprobe`), increase.

IVF_FLAT is the most basic IVF index, and the encoded data stored in each unit is consistent with the original data.
GPU_IVF_FLAT is the most basic IVF index, and the encoded data stored in each unit is consistent with the original data.

When conducting searches, note that you can set the top-K up to 256 for any search against a GPU_IVF_FLAT-indexed collection.

- Index building parameters

Expand All @@ -205,6 +207,12 @@ IVF_FLAT is the most basic IVF index, and the encoded data stored in each unit i
| --------- | ------------------------ | --------------- | ------------- |
| `nprobe` | Number of units to query | [1, nlist] | 8 |

- Limits on search

| Parameter | Range |
| --------- | ------ |
| `top-K` | <= 256 |

### IVF_SQ8

IVF_FLAT does not perform any compression, so the index files it produces are roughly the same size as the original, raw non-indexed vector data. For example, if the original 1B SIFT dataset is 476 GB, its IVF_FLAT index files will be slightly smaller (~470 GB). Loading all the index files into memory will consume 470 GB of storage.
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