DOC-5495: modify vector set docs for 8.2 (initial commit)

content/commands/vismember.md

@@ -0,0 +1,66 @@
+---
+arguments:
+- name: key
+  type: key
+- name: element
+  type: string
+arity: 3
+categories:
+- docs
+- develop
+- stack
+- oss
+- rs
+- rc
+- oss
+- kubernetes
+- clients
+command_flags:
+- READONLY
+complexity: O(1)
+description: Check if an element exists in a vector set.
+function: vismemberCommand
+group: vector_set
+hidden: false
+linkTitle: VISMEMBER
+since: 8.0.0
+summary: Check if an element exists in a vector set.
+syntax_fmt: VISMEMBER key element
+syntax_str: element
+title: VISMEMBER
+bannerText: Vector set is a new data type that is currently in preview and may be subject to change.
+---
+
+Check if an element exists in a vector set.
+
+## Required arguments
+
+<details open>
+<summary><code>key</code></summary>
+
+is the name of the key that holds the vector set.
+</details>
+
+<details open>
+<summary><code>element</code></summary>
+
+is the name of the element you want to check for membership.
+</details>
+
+## Related topics
+
+- [Vector sets]({{< relref "/develop/data-types/vector-sets" >}})
+
+## Return information
+
+{{< multitabs id="vismember-return-info" 
+    tab1="RESP2" 
+    tab2="RESP3" >}}
+
+[Integer reply](../../develop/reference/protocol-spec#integers): `0` if the element does not exist in the vector set, or the key does not exist. `1` if the element exists in the vector set.
+
+-tab-sep-
+
+[Boolean reply](../../develop/reference/protocol-spec#booleans): `false` if the element does not exist in the vector set, or the key does not exist. `true` if the element exists in the vector set.
+
+{{< /multitabs >}}

content/commands/vrem.md

@@ -10,12 +10,12 @@ categories:
 - kubernetes
 - clients
 complexity: O(log(N)) for each element removed, where N is the number of elements in the vector set.
-description: Remove one or more elements from a vector set.
+description: Remove an element from a vector set.
 group: vector_set
 hidden: false
 linkTitle: VREM
 since: 8.0.0
-summary: Remove one or more elements from a vector set.
+summary: Remove an element from a vector set.
 syntax_fmt: "VREM key element"
 title: VREM
 bannerText: Vector set is a new data type that is currently in preview and may be subject to change.
@@ -26,14 +26,10 @@ Remove an element from a vector set.
 ```shell
 VADD vset VALUES 3 1 0 1 bar
 (integer) 1
-```
 
-```shell
 VREM vset bar
 (integer) 1
-```
 
-```shell
 VREM vset bar
 (integer) 0
 ```

content/commands/vsim.md

@@ -19,7 +19,7 @@ history:
 linkTitle: VSIM
 since: 8.0.0
 summary: Return elements by vector similarity.
-syntax_fmt: "VSIM key (ELE | FP32 | VALUES num) (vector | element) [WITHSCORES] [WITHATTRIBS] [COUNT num]\n  [EF search-exploration-factor] [FILTER expression] [FILTER-EF max-filtering-effort] [TRUTH] [NOTHREAD]"
+syntax_fmt: "VSIM key (ELE | FP32 | VALUES num) (vector | element) [WITHSCORES] [WITHATTRIBS] [COUNT num]\n  [EPSILON delta] [EF search-exploration-factor] [FILTER expression] [FILTER-EF max-filtering-effort]\n  [TRUTH] [NOTHREAD]"
 title: VSIM
 bannerText: Vector set is a new data type that is currently in preview and may be subject to change.
 ---
@@ -99,6 +99,12 @@ returns, for each element, the JSON attribute associated with the element or NUL
 limits the number of returned results to `num`.
 </details>
 
+<details open>
+<summary><code>EPSILON delta</code></summary>
+
+is a floating point number between 0 and 1. It is used to retrieve elements that have a distance that is no further than the specified `delta`. In vector sets, returned elements have a similarity score (when compared to the query vector) that is between 1 and 0, where 1 means identical and 0 means opposite vectors. For example, if the `EPSILON` option is specified with an argument of `0.2`, it means only elements that have a similarity of 0.8 or better (a distance < 0.2) are returned. This is useful when you specify a large `COUNT`, but you don't want elements that are too far away from the query vector.
+</details>
+
 <details open>
 <summary><code>EF search-exploration-factor</code></summary>
 

content/develop/data-types/vector-sets/_index.md

@@ -33,6 +33,7 @@ The following commands are available for vector sets:
 - [VEMB]({{< relref "/commands/vemb" >}}) - retrieve the approximate vector associated with a vector set element.
 - [VGETATTR]({{< relref "/commands/vgetattr" >}}) - retrieve the attributes of a vector set element.
 - [VINFO]({{< relref "/commands/vinfo" >}}) - retrieve metadata and internal details about a vector set, including size, dimensions, quantization type, and graph structure.
+- [VISMEMBER]({{< relref "/commands/vismember" >}}) - check if an element exists in a vector set.
 - [VLINKS]({{< relref "/commands/vlinks" >}}) - retrieve the neighbors of a specified element in a vector set; the connections for each layer of the HNSW graph.
 - [VRANDMEMBER]({{< relref "/commands/vrandmember" >}}) - retrieve random elements of a vector set.
 - [VREM]({{< relref "/commands/vrem" >}}) - remove an element from a vector set.