diff --git a/docs/src/ann_indexes.md b/docs/src/ann_indexes.md
index ec4d9713..95ae6e90 100644
--- a/docs/src/ann_indexes.md
+++ b/docs/src/ann_indexes.md
@@ -140,13 +140,15 @@ There are a couple of parameters that can be used to fine-tune the search:
- **limit** (default: 10): The amount of results that will be returned
- **nprobes** (default: 20): The number of probes used. A higher number makes search more accurate but also slower.
- Most of the time, setting nprobes to cover 5-10% of the dataset should achieve high recall with low latency.
- e.g., for 1M vectors divided up into 256 partitions, nprobes should be set to ~20-40.
- Note: nprobes is only applicable if an ANN index is present. If specified on a table without an ANN index, it is ignored.
+ Most of the time, setting nprobes to cover 5-15% of the dataset should achieve high recall with low latency.
+ - _For example_, For a dataset of 1 million vectors divided into 256 partitions, `nprobes` should be set to ~20-40. This value can be adjusted to achieve the optimal balance between search latency and search quality.
+
- **refine_factor** (default: None): Refine the results by reading extra elements and re-ranking them in memory.
A higher number makes search more accurate but also slower. If you find the recall is less than ideal, try refine_factor=10 to start.
- e.g., for 1M vectors divided into 256 partitions, if you're looking for top 20, then refine_factor=200 reranks the whole partition.
- Note: refine_factor is only applicable if an ANN index is present. If specified on a table without an ANN index, it is ignored.
+ - _For example_, For a dataset of 1 million vectors divided into 256 partitions, setting the `refine_factor` to 200 will initially retrieve the top 4,000 candidates (top k * refine_factor) from all searched partitions. These candidates are then reranked to determine the final top 20 results.
+!!! note
+ Both `nprobes` and `refine_factor` are only applicable if an ANN index is present. If specified on a table without an ANN index, those parameters are ignored.
+
=== "Python"