Update README.md

README.md

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 # Config-Optimization
 This project includes implementations of different configuration optimization methods in prior papers. 
-Note that due to the randomness of each method, we can roughly replicate their experimental results in folder `/experiments/`. 
+Note that due to the randomness of each method, we can only roughly replicate their experimental results in folder `/experiments/`. 
 
 ### 1. CART method