Update README.md

README.md

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 # MOLE: *Metadata Extraction and Validation in Scientific Papers*
 
+MOLE is a dataset for evaluating and validating metadata extracted from scientific papers
+
+![pipeline](https://raw.githubusercontent.com/IVUL-KAUST/MOLE/refs/heads/main/images/pipeline.png)
 
 ## 📋 Dataset Structure
 Description of the dataset features