Feat: Implement KD Tree Indexer

Author: 4adex

Cargo.lock

@@ -6,6 +6,6 @@ version = "0.1.0"
 edition = "2021"
 
 [dependencies]
-
+serde = { version = "1.0", features = ["derive"] }
 core = { path = "../core" }
 

crates/index/Cargo.toml

@@ -46,12 +46,7 @@ impl VectorIndex for FlatIndex {
         let mut scores = self
             .index
             .iter()
-            .map(|point| {
-                (
-                    point.id,
-                    distance(point.vector.clone(), query_vector.clone(), similarity),
-                )
-            })
+            .map(|point| (point.id, distance(&point.vector, &query_vector, similarity)))
             .collect::<Vec<_>>();
 
         // Sorting logic according to type of metric used