doc and config rerank (#475)

projects/app/src/service/core/dataset/data/pg.ts

@@ -131,13 +131,15 @@ export async function searchDatasetData({
   model,
   similarity = 0,
   limit,
-  datasetIds = []
+  datasetIds = [],
+  rerank = false
 }: {
   text: string;
   model: string;
   similarity?: number; // min distance
   limit: number;
   datasetIds: string[];
+  rerank?: boolean;
 }) {
   const { vectors, tokenLen } = await getVectorsByText({
     model,
@@ -219,6 +221,13 @@ export async function searchDatasetData({
     return true;
   });
 
+  if (!rerank) {
+    return {
+      searchRes: filterData.slice(0, limit),
+      tokenLen
+    };
+  }
+
   // ReRank result
   const reRankResult = await reRankSearchResult({
     query: text,