diff --git a/README.md b/README.md index a4386bc..b45c94c 100644 --- a/README.md +++ b/README.md @@ -40,7 +40,7 @@ Create a vector column with 3 dimensions CREATE TABLE items (id bigserial PRIMARY KEY, embedding vector(3)); ``` -Insert values +Insert vectors ```sql INSERT INTO items (embedding) VALUES ('[1,2,3]'), ('[4,5,6]'); @@ -128,7 +128,7 @@ SELECT embedding <-> '[3,1,2]' AS distance FROM items; For inner product, multiply by -1 (since `<#>` returns the negative inner product) ```sql -SELECT -1 * (embedding <#> '[3,1,2]') AS inner_product FROM items; +SELECT (embedding <#> '[3,1,2]') * -1 AS inner_product FROM items; ``` For cosine similarity, use 1 - cosine distance @@ -137,7 +137,7 @@ For cosine similarity, use 1 - cosine distance SELECT 1 - (embedding <=> '[3,1,2]') AS cosine_similarity FROM items; ``` -#### Averaging +#### Aggregates Average vectors