feature: add strategies to recommendations

server/src/handlers/chunk_handler.rs

@@ -1438,6 +1438,8 @@ pub struct RecommendChunksRequest {
     pub positive_tracking_ids: Option<Vec<String>>,
     /// The tracking_ids of the chunks to be used as negative examples for the recommendation. The chunks in this array will be used to filter out similar chunks.
     pub negative_tracking_ids: Option<Vec<String>>,
+    /// Strategy to use for recommendations, either "average_vector" or "best_score". The default is "average_vector". The "average_vector" strategy will construct a single average vector from the positive and negative samples then use it to perform a pseudo-search. The "best_score" strategy is more advanced and navigates the HNSW with a heuristic of picking edges where the point is closer to the positive samples than it is the negatives.
+    pub strategy: Option<String>,
     /// Filters to apply to the chunks to be recommended. This is a JSON object which contains the filters to apply to the chunks to be recommended. The default is None.
     pub filters: Option<ChunkFilter>,
     /// The number of chunks to return. This is the number of chunks which will be returned in the response. The default is 10.
@@ -1618,6 +1620,7 @@ pub async fn get_recommended_chunks(
     let recommended_qdrant_point_ids = recommend_qdrant_query(
         positive_qdrant_ids,
         negative_qdrant_ids,
+        data.strategy.clone(),
         data.filters.clone(),
         limit,
         dataset_org_plan_sub.dataset.id,

server/src/handlers/group_handler.rs

@@ -1,8 +1,6 @@
 use super::{
     auth_handler::{AdminOnly, LoggedUser},
-    chunk_handler::{
-        parse_query, ChunkFilter, ScoreChunkDTO, SearchChunkData,
-    },
+    chunk_handler::{parse_query, ChunkFilter, ScoreChunkDTO, SearchChunkData},
 };
 use crate::{
     data::models::{
@@ -876,7 +874,7 @@ pub struct GenerateOffGroupData {
 }
 
 #[derive(Debug, Serialize, Deserialize, Clone, ToSchema)]
-pub struct ReccomendGroupChunksRequest {
+pub struct RecommendGroupChunksRequest {
     /// The ids of the groups to be used as positive examples for the recommendation. The groups in this array will be used to find similar groups.
     pub positive_group_ids: Option<Vec<uuid::Uuid>>,
     /// The ids of the groups to be used as negative examples for the recommendation. The groups in this array will be used to filter out similar groups.
@@ -885,6 +883,8 @@ pub struct ReccomendGroupChunksRequest {
     pub positive_group_tracking_ids: Option<Vec<String>>,
     /// The ids of the groups to be used as negative examples for the recommendation. The groups in this array will be used to filter out similar groups.
     pub negative_group_tracking_ids: Option<Vec<String>>,
+    /// Strategy to use for recommendations, either "average_vector" or "best_score". The default is "average_vector". The "average_vector" strategy will construct a single average vector from the positive and negative samples then use it to perform a pseudo-search. The "best_score" strategy is more advanced and navigates the HNSW with a heuristic of picking edges where the point is closer to the positive samples than it is the negatives.
+    pub strategy: Option<String>,
     /// Filters to apply to the chunks to be recommended. This is a JSON object which contains the filters to apply to the chunks to be recommended. The default is None.
     pub filters: Option<ChunkFilter>,
     /// The number of groups to return. This is the number of groups which will be returned in the response. The default is 10.
@@ -958,7 +958,7 @@ pub enum RecommendGroupChunkResponseTypes {
     path = "/chunk_group/recommend",
     context_path = "/api",
     tag = "chunk_group",
-    request_body(content = ReccomendGroupChunksRequest, description = "JSON request payload to get recommendations of chunks similar to the chunks in the request", content_type = "application/json"),
+    request_body(content = RecommendGroupChunksRequest, description = "JSON request payload to get recommendations of chunks similar to the chunks in the request", content_type = "application/json"),
     responses(
         (status = 200, description = "JSON body representing the groups which are similar to the groups in the request", body = RecommendGroupChunkResponseTypes),
         (status = 400, description = "Service error relating to to getting similar chunks", body = ErrorResponseBody),
@@ -972,7 +972,7 @@ pub enum RecommendGroupChunkResponseTypes {
 )]
 #[tracing::instrument(skip(pool))]
 pub async fn get_recommended_groups(
-    data: web::Json<ReccomendGroupChunksRequest>,
+    data: web::Json<RecommendGroupChunksRequest>,
     pool: web::Data<Pool>,
     _user: LoggedUser,
     dataset_org_plan_sub: DatasetAndOrgWithSubAndPlan,
@@ -1080,6 +1080,7 @@ pub async fn get_recommended_groups(
     let recommended_qdrant_point_ids = recommend_qdrant_groups_query(
         positive_qdrant_ids,
         negative_qdrant_ids,
+        data.strategy.clone(),
         data.filters.clone(),
         limit,
         data.group_size.unwrap_or(10),

server/src/lib.rs

@@ -130,7 +130,7 @@ impl Modify for SecurityAddon {
             name = "BSL",
             url = "https://github.com/devflowinc/trieve/blob/main/LICENSE.txt",
         ),
-        version = "0.5.9",
+        version = "0.6.0",
     ),
     servers(
         (url = "https://api.trieve.ai",
@@ -227,7 +227,7 @@ impl Modify for SecurityAddon {
             handlers::chunk_handler::ReturnQueuedChunk,
             handlers::chunk_handler::UpdateChunkData,
             handlers::chunk_handler::RecommendChunksRequest,
-            handlers::group_handler::ReccomendGroupChunksRequest,
+            handlers::group_handler::RecommendGroupChunksRequest,
             handlers::chunk_handler::UpdateChunkByTrackingIdData,
             handlers::chunk_handler::SearchChunkQueryResponseBody,
             handlers::chunk_handler::GenerateChunksRequest,

server/src/operators/qdrant_operator.rs

@@ -12,9 +12,10 @@ use qdrant_client::{
         group_id::Kind, payload_index_params::IndexParams, point_id::PointIdOptions,
         quantization_config::Quantization, BinaryQuantization, CountPoints, CreateCollection,
         Distance, FieldType, Filter, HnswConfigDiff, PayloadIndexParams, PointId, PointStruct,
-        QuantizationConfig, RecommendPointGroups, RecommendPoints, SearchPointGroups, SearchPoints,
-        SparseIndexConfig, SparseVectorConfig, SparseVectorParams, TextIndexParams, TokenizerType,
-        Value, Vector, VectorParams, VectorParamsMap, VectorsConfig,
+        QuantizationConfig, RecommendPointGroups, RecommendPoints, RecommendStrategy,
+        SearchPointGroups, SearchPoints, SparseIndexConfig, SparseVectorConfig, SparseVectorParams,
+        TextIndexParams, TokenizerType, Value, Vector, VectorParams, VectorParamsMap,
+        VectorsConfig,
     },
 };
 use serde::{Deserialize, Serialize};
@@ -799,6 +800,7 @@ pub async fn search_qdrant_query(
 pub async fn recommend_qdrant_query(
     positive_ids: Vec<uuid::Uuid>,
     negative_ids: Vec<uuid::Uuid>,
+    strategy: Option<String>,
     filters: Option<ChunkFilter>,
     limit: u64,
     dataset_id: uuid::Uuid,
@@ -807,10 +809,15 @@ pub async fn recommend_qdrant_query(
 ) -> Result<Vec<uuid::Uuid>, ServiceError> {
     let qdrant_collection = config.QDRANT_COLLECTION_NAME;
 
-    let filter = assemble_qdrant_filter(filters, None, None, dataset_id, pool).await?;
+    let recommend_strategy = match strategy {
+        Some(strategy) => match strategy.as_str() {
+            "best_score" => RecommendStrategy::BestScore,
+            _ => RecommendStrategy::AverageVector,
+        },
+        None => RecommendStrategy::AverageVector,
+    };
 
-    let qdrant =
-        get_qdrant_connection(Some(&config.QDRANT_URL), Some(&config.QDRANT_API_KEY)).await?;
+    let filter = assemble_qdrant_filter(filters, None, None, dataset_id, pool).await?;
 
     let positive_point_ids: Vec<PointId> = positive_ids
         .iter()
@@ -851,11 +858,14 @@ pub async fn recommend_qdrant_query(
         read_consistency: None,
         positive_vectors: vec![],
         negative_vectors: vec![],
-        strategy: None,
+        strategy: Some(recommend_strategy.into()),
         timeout: None,
         shard_key_selector: None,
     };
 
+    let qdrant =
+        get_qdrant_connection(Some(&config.QDRANT_URL), Some(&config.QDRANT_API_KEY)).await?;
+
     let recommended_point_ids = qdrant
         .recommend(&recommend_points)
         .await
@@ -880,6 +890,7 @@ pub async fn recommend_qdrant_query(
 pub async fn recommend_qdrant_groups_query(
     positive_ids: Vec<uuid::Uuid>,
     negative_ids: Vec<uuid::Uuid>,
+    strategy: Option<String>,
     filter: Option<ChunkFilter>,
     limit: u64,
     group_size: u32,
@@ -889,8 +900,13 @@ pub async fn recommend_qdrant_groups_query(
 ) -> Result<Vec<GroupSearchResults>, ServiceError> {
     let qdrant_collection = config.QDRANT_COLLECTION_NAME;
 
-    let qdrant =
-        get_qdrant_connection(Some(&config.QDRANT_URL), Some(&config.QDRANT_API_KEY)).await?;
+    let recommend_strategy = match strategy {
+        Some(strategy) => match strategy.as_str() {
+            "best_score" => RecommendStrategy::BestScore,
+            _ => RecommendStrategy::AverageVector,
+        },
+        None => RecommendStrategy::AverageVector,
+    };
 
     let filters = assemble_qdrant_filter(filter, None, None, dataset_id, pool).await?;
 
@@ -932,14 +948,17 @@ pub async fn recommend_qdrant_groups_query(
         read_consistency: None,
         positive_vectors: vec![],
         negative_vectors: vec![],
-        strategy: None,
+        strategy: Some(recommend_strategy.into()),
         timeout: None,
         shard_key_selector: None,
         group_by: "group_ids".to_string(),
         group_size: if group_size == 0 { 1 } else { group_size },
         with_lookup: None,
     };
 
+    let qdrant =
+        get_qdrant_connection(Some(&config.QDRANT_URL), Some(&config.QDRANT_API_KEY)).await?;
+
     let data = qdrant
         .recommend_groups(&recommend_points)
         .await