兼容解析重排序服务返回score字段

internal/models/rerank/reranker.go

@@ -2,9 +2,10 @@ package rerank
 
 import (
 	"context"
+	"encoding/json"
 	"fmt"
 	"strings"
-
+    
 	"github.com/Tencent/WeKnora/internal/types"
 )
 
@@ -25,6 +26,33 @@ type RankResult struct {
 	Document       DocumentInfo `json:"document"`
 	RelevanceScore float64      `json:"relevance_score"`
 }
+//Handles the RelevanceScore field by checking if RelevanceScore exists first, otherwise falls back to Score field
+func (r *RankResult) UnmarshalJSON(data []byte) error {
+
+	var temp struct {
+		Index          int           `json:"index"`
+		Document       DocumentInfo  `json:"document"`
+		RelevanceScore *float64      `json:"relevance_score"`
+		Score          *float64      `json:"score"`
+	}
+
+
+	if err := json.Unmarshal(data, &temp); err != nil {
+		return fmt.Errorf("failed to unmarshal rank result: %w", err)
+	}
+
+	r.Index = temp.Index
+	r.Document = temp.Document
+
+	if temp.RelevanceScore != nil {
+		r.RelevanceScore = *temp.RelevanceScore
+	} else if temp.Score != nil {
+		r.RelevanceScore = *temp.Score
+	}
+
+
+	return nil
+}
 
 type DocumentInfo struct {
 	Text string `json:"text"`