## 5 Experiments
### Experimental Results
\begin{table}
\begin{tabular}{c c c c c c c c c c c} \hline \hline \multirow{2}{*}{**LLMs**} & \multirow{2}{*}{**Dataset**} & \multirow{2}{*}{**ACC**} & \multicolumn{2}{c}{**ACC of SwapAlpha**} & \multicolumn{2}{c}{**ACC of SwapWord**} & \multicolumn{2}{c}{**ACC of CaseAlpha**} \\  & & **0\%** & **20\%** & **50\%** & **100\%** & **20\%** & **50\%** & **100\%** & **20\%** & **50\%** & **100\%** \\ \hline \multirow{4}{*}{GLM4} & MMLU & 65.1\({}_{\text{o}}\) & 62.80\({}_{\text{o}}\) & 58.20\({}_{\text{o}}\) & 49.30\({}_{\text{o}}\) & 53.60\({}_{\text{o}}\) & 50.00\({}_{\text{o}}\) & 47.90\({}_{\text{o}}\) & 64.00\({}_{\text{o}}\) & 62.00\({}_{\text{o}}\) & 59.20\({}_{\text{o}}\) \\  & LogiQA-en & 48.8\({}_{\text{o}}\) & 45.8\({}_{\text{o}}\) & 42.10\({}_{\text{o}}\) & 36.91\({}_{\text{o}}\) & 37.10\({}_{\text{o}}\) & 32.62\({}_{\text{o}}\) & 31.30\({}_{\text{o}}\) & 47.20\({}_{\text{o}}\) & 46.70\({}_{\text{o}}\) & 43.30\({}_{\text{o}}\) \\  & LSAT & 54.5\({}_{\text{o}}\) & 51.32\({}_{\text{o}}\) & 48.10\({}_{\text{o}}\) & 39.10\({}_{\text{o}}\) & 38.91\({}_{\text{o}}\) & 35.50\({}_{\text{o}}\) & 31.70\({}_{\text{o}}\) & 52.10\({}_{\text{o}}\) & 50.80\({}_{\text{o}}\) & 47.01\({}_{\text{o}}\) \\  & SAT-en & 83.3\({}_{\text{o}}\) & 78.9\({}_{\text{o}}\) & 76.01\({}_{\text{o}}\) & 65.80\({}_{\text{o}}\) & 68.40\({}_{\text{o}}\) & 60.70\({}_{\text{o}}\) & 54.90\({}_{\text{o}}\) & 81.30\({}_{\text{o}}\) & 86.10\({}_{\text{o}}\) \\ \hline \multirow{4}{*}{Llama3.1} & MMLU & 61.2\({}_{\text{o}}\) & 58.8\({}_{\text{o}}\) & 54.50\({}_{\text{o}}\) & 47.30\({}_{\text{o}}\) & 51.40\({}_{\text{o}}\) & 48.90\({}_{\text{o}}\) & 47.10\({}_{\text{o}}\) & 59.80\({}_{\text{o}}\) & 57.40\({}_{\text{o}}\) & 53.80\({}_{\text{o}}\) \\  & LogiQA-en & 39.5\({}_{\text{o}}\) & 37.40\({}_{\text{o}}\) & 36.80\({}_{\text{o}}\) & 31.81\({}_{\text{o}}\) & 33.50\({}_{\text{o}}\) & 23.30\({}_{\text{o}}\) & 28.32\({}_{\text{o}}\) & 38.91\({}_{\text{o}}\) & 37.50\({}_{\text{o}}\) & 37.01\({}_{\text{o}}\) \\  & LSAT & 49.0\({}_{\text{o}}\) & 46.10\({}_{\text{o}}\) & 42.70\({}_{\text{o}}\) & 35.50\({}_{\text{o}}\) & 36.02\({}_{\text{o}}\) & 33.50\({}_{\text{o}}\) & 29.71\({}_{\text{o}}\) & 46.62\({}_{\text{o}}\) & 41.26\({}_{\text{o}}\) & 42.02\({}_{\text{o}}\) & 40.70\({}_{\text{o}}\) \\  & SAT-en & 80.8\({}_{\text{o}}\) & 76.9\({}_{\text{o}}\) & 69.21\({}_{\text{o}}\) & 52.70\({}_{\text{o}}\) & 59.52\({}_{\text{o}}\) & 49.50\({}_{\text{o}}\) & 46.81\({}_{\text{o}}\) & 76.72\({}_{\text{o}}\) & 74.01\({}_{\text{o}}\) & 61.20\({}_{\text{o}}\) \\ \hline \multirow{4}{*}{Qwen2.5} & MMLU & 69.4\({}_{\text{o}}\) & 67.9\({}_{\text{o}}\) & 64.70\({}_{\text{o}}\) & 57.20\({}_{\text{o}}\) & 57.60\({}_{\text{o}}\) & 55.00\({}_{\text{o}}\) & 52.70\({}_{\text{o}}\) & 68.70\({}_{\text{o}}\) & 67.40\({}_{\text{o}}\) & 65.70\({}_{\text{o}}\) \\  & LogiQA-en & 55.9\({}_{\text{o}}\) & 53.90\({}_{\text{o}}\) & 51.40\({}_{\text{o}}\) & 45.20\({}_{\text{o}}\) & 42.10\({}_{\text{o}}\) & 40.31\({}_{\text{o}}\) & 38.50\({}_{\text{o}}\) & 55.10\({}_{\text{o}}\) & 54.01\({}_{\text{o}}\) & 51.40\({}_{\text{o}}\) \\  & LSAT & 60.9\({}_{\text{o}}\) & 60.20\({}_{\text{o}}\) & 56.80\({}_{\text{o}}\) & 46.30\({}_{\text{o}}\) & 44.40\({}_{\text{o}}\) & 38.70\({}_{\text{o}}\) & 36.10\({}_{\text{o}}\) & 99.71\({}_{\text{o}}\) & 57.70\({}_{\text{o}}\) & 54.00\({}_{\text{o}}\) \\  & SAT-en & 85.9\({}_{\text{o}}\) & 85.40\({}_{\text{o}}\) & 82.30\({}_{\text{o}}\) & 73.50\({}_{\text{o}}\) & 69.21\({}_{\text{o}}\) & 61.91\({}_{\text{o}}\) & 58.70\({}_{\text{o}}\) & 84.70\({}_{\text{o}}\) & 83.30\({}_{\text{o}}\) & 82.80\({}_{\text{o}}\) \\ \hline \multirow{4}{*}{Falcon3-Mamba} & MMLU & 62.6\({}_{\text{o}}\) & 59.60\({}_{\text{o}}\) & 55.70\({}_{\text{o}}\) & 47.20\({}_{\text{o}}\) & 51.90\({}_{\text{o}}\) & 49.20\({}_{\text{o}}\) & 47.90\({}_{\text{o}}\) & 60.70\({}_{\text{o}}\) & 59.00\({}_{\text{o}}\) & 56.40\({}_{\text{o}}\) \\  & LogiQA-en & 42.30\({}_{\text{o}}\) & 41.60\({}_{\text{o}}\) & 38.20\({}_{\text{o}}\) & 33.80\({}_{\text{o}}\) & 37.80\({}_{\text{o}}\) & 37.10\({}_{\text{o}}\) & 36.60\({}_{\text{o}}\) & 41.30\({}_{\text{o}}\) & 40.50\({}_{\text{o}}\) & 3 Figure 6 presents line charts that visualize the performance decline trends of different LLMs under varying perturbation levels.