From f108b9570497a96cfb554134f983202c0366e2ff Mon Sep 17 00:00:00 2001
From: EYHN <cneyhn@gmail.com>
Date: Mon, 5 Aug 2024 02:29:50 +0000
Subject: [PATCH] feat(core): tuning for better search (#7713)

---
 .../src/sync/indexer/impl/indexeddb/__tests__/bm25.spec.ts      | 1 +
 packages/common/infra/src/sync/indexer/impl/indexeddb/bm25.ts   | 2 +-
 .../core/src/modules/docs-search/services/docs-search.ts        | 2 +-
 3 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/packages/common/infra/src/sync/indexer/impl/indexeddb/__tests__/bm25.spec.ts b/packages/common/infra/src/sync/indexer/impl/indexeddb/__tests__/bm25.spec.ts
index d6856167c..ea9012b5d 100644
--- a/packages/common/infra/src/sync/indexer/impl/indexeddb/__tests__/bm25.spec.ts
+++ b/packages/common/infra/src/sync/indexer/impl/indexeddb/__tests__/bm25.spec.ts
@@ -6,4 +6,5 @@ test('bm25', () => {
   expect(bm25(1, 1, 10, 10, 15)).toEqual(3.2792079793859643);
   expect(bm25(2, 1, 10, 10, 15) > bm25(1, 1, 10, 10, 15)).toBeTruthy();
   expect(bm25(1, 1, 10, 10, 15) > bm25(2, 1, 10, 100, 15)).toBeTruthy();
+  expect(bm25(1, 1, 10, 10, 15) > bm25(1, 1, 10, 100, 15)).toBeTruthy();
 });
diff --git a/packages/common/infra/src/sync/indexer/impl/indexeddb/bm25.ts b/packages/common/infra/src/sync/indexer/impl/indexeddb/bm25.ts
index 9f69b5642..d401ae32e 100644
--- a/packages/common/infra/src/sync/indexer/impl/indexeddb/bm25.ts
+++ b/packages/common/infra/src/sync/indexer/impl/indexeddb/bm25.ts
@@ -57,6 +57,6 @@ export const bm25 = (
     invDocFreq *
     (d +
       (termFreq * (k + 1)) /
-        (termFreq + k * (1 - b + (b * fieldLength) / avgFieldLength)))
+        (termFreq + k * (1 - b + b * (fieldLength / avgFieldLength))))
   );
 };
diff --git a/packages/frontend/core/src/modules/docs-search/services/docs-search.ts b/packages/frontend/core/src/modules/docs-search/services/docs-search.ts
index 0a5f7e42a..58bd00823 100644
--- a/packages/frontend/core/src/modules/docs-search/services/docs-search.ts
+++ b/packages/frontend/core/src/modules/docs-search/services/docs-search.ts
@@ -146,7 +146,7 @@ export class DocsSearchService extends Service {
                 },
                 {
                   type: 'boost',
-                  boost: 100,
+                  boost: 1.5,
                   query: {
                     type: 'match',
                     field: 'flavour',