From 889543559130cefb43d38b79dd87a941e8af31fe Mon Sep 17 00:00:00 2001
From: Kishore Nallan <kishorenc@gmail.com>
Date: Fri, 16 Sep 2022 16:48:59 +0530
Subject: [PATCH] Ensure that vec distance is always positive for cosine.

---
 src/index.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/index.cpp b/src/index.cpp
index a10f1840..c7acb92a 100644
--- a/src/index.cpp
+++ b/src/index.cpp
@@ -2572,8 +2572,11 @@ void Index::search(std::vector<query_tokens_t>& field_query_tokens, const std::v
                     groups_processed.emplace(distinct_id);
                 }
 
+                auto vec_dist_score = (field_vector_index->distance_type == cosine) ? std::abs(dist_label.first) :
+                                      dist_label.first;
+
                 int64_t scores[3] = {0};
-                scores[0] = -float_to_int64_t(dist_label.first);
+                scores[0] = -float_to_int64_t(vec_dist_score);
                 int64_t match_score_index = -1;
 
                 //LOG(INFO) << "SEQ_ID: " << seq_id << ", score: " << dist_label.first;