Update README.md

README.md

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 ## <span id="Introduction">Introduction</span>
 
 The Nanbeige2-8B-Chat is the latest 8B model developed by the Nanbeige Lab, which utilized 4.5T tokens of high-quality training data during the training phase. 
-During the alignment phase, we initially trained our model using 1 million samples through Supervised Fine-Tuning (SFT). We then engaged in curriculum learning with 400,000 high-quality samples that presented a greater level of difficulty. Subsequently, we incorporated human feedback through the Dynamic Policy Optimization (DPO), culminating in the development of Nanbeige2-8B-Chat. Nanbeige2-8B-Chat has achieved superior performance across various authoritative benchmark datasets.
+During the alignment phase, we initially trained our model using 1 million samples through Supervised Fine-Tuning (SFT). We then engaged in curriculum learning with 400,000 high-quality samples that presented a greater level of difficulty. Subsequently, we incorporated human feedback through the Direct Preference Optimization (DPO), culminating in the development of Nanbeige2-8B-Chat. Nanbeige2-8B-Chat has achieved superior performance across various authoritative benchmark datasets.
 
 
 ## <span id="Evaluation">Evaluation</span>