Update README.md

README.md

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 license: mit
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-This is a pre-trained model using the dataset from [tatsu-lab/stanford_alpaca: Code and documentation to train Stanford's Alpaca models, and generate the data. (github.com)](https://github.com/tatsu-lab/stanford_alpaca).
+# Introduction
+This is ItbearZhang/facebook-opt-125m-with-alpacadataset using the dataset from [tatsu-lab/stanford_alpaca: Code and documentation to train Stanford's Alpaca models, and generate the data. (github.com)](https://github.com/tatsu-lab/stanford_alpaca)
+and the opt-125m pretrained lm model from facebook/opt-125m.
+
+# How to use it to interfere?