From 060c7c3b1f16d26283235c746edf7f523a299509 Mon Sep 17 00:00:00 2001
From: KaiMao LEE <361204176@qq.com>
Date: Sun, 30 Nov 2025 17:06:39 +0800
Subject: [PATCH] Update accuracy_reward.py
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

原来的编辑距离相似度准确性是错误的，计算的是编辑距离即不相似度。
---
 .../tools/reasoning_data_pipeline/utils/accuracy_reward.py     | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/internvl_chat/tools/reasoning_data_pipeline/utils/accuracy_reward.py b/internvl_chat/tools/reasoning_data_pipeline/utils/accuracy_reward.py
index 32c0ec0b..e88b1628 100644
--- a/internvl_chat/tools/reasoning_data_pipeline/utils/accuracy_reward.py
+++ b/internvl_chat/tools/reasoning_data_pipeline/utils/accuracy_reward.py
@@ -512,7 +512,8 @@ def check_answer(answer_pred, answer_gt, mode):
         det_answer = ' '.join(answer_pred.strip().lower().split())
         dist = levenshtein_distance(gt_answer, det_answer)
         length = max(len(answer_gt.upper()), len(answer_pred.upper()))
-        accuracy = max(accuracy, float(dist) / float(length))
+        similarity = 1 -  float(dist) / float(length)
+        accuracy = max(accuracy, similarity)
 
     if 'mc_score' in mode:
         accuracy = max(accuracy, multi_choice_score(answer_pred, answer_gt))