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Added guidance for probes to readme [skip ci]

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Andrew Kane
2023-04-20 12:32:49 -07:00
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README.md
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@@ -160,8 +160,8 @@ You can add an index to use approximate nearest neighbor search, which trades so
Three keys to achieving good recall are: Three keys to achieving good recall are:
1. Create the index *after* the table has some data 1. Create the index *after* the table has some data
2. Choose an appropriate number of lists (a good place to start is `rows / 1000` for up to 1M rows and `sqrt(rows)` for over 1M rows) 2. Choose an appropriate number of lists - a good place to start is `rows / 1000` for up to 1M rows and `sqrt(rows)` for over 1M rows
3. When querying, specify an appropriate number of [probes](#query-options) (higher is better for recall, lower is better for speed) 3. When querying, specify an appropriate number of [probes](#query-options) (higher is better for recall, lower is better for speed) - a good place to start is `lists / 10` for up to 1M rows and `sqrt(lists)` for over 1M rows
Add an index for each distance function you want to use. Add an index for each distance function you want to use.