Fix distance computation (#251)

Signed-off-by: zh Wang <[email protected]>
zilliztech · Dec 5, 2023 · 63b28e1 · 63b28e1
1 parent 981a204
commit 63b28e1
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/thirdparty/DiskANN/src/pq_flash_index.cpp b/thirdparty/DiskANN/src/pq_flash_index.cpp
@@ -851,7 +851,7 @@ namespace diskann {
               distances[i] *= (max_base_norm * query_norm);
             }
           } else if (metric == diskann::Metric::COSINE) {
-            distances[i] = 1.0 - distances[i];
+            distances[i] = -distances[i];
           }
         }
       } else {