Update README.md

README.md

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 ## Dataset Summary
 
-The **Irish Massive ABC Notation (IrishMAN)** dataset includes 216,284 Irish music tunes transcribed in ABC notation. These tunes were collected from thesession.org and abcnotation.com, both renowned for sharing traditional music. To ensure uniformity in formatting, all tunes were converted to XML and then back to ABC using [scripts](https://wim.vree.org/svgParse/), and fields containing natural language (e.g., titles and lyrics) were removed.
+The **Irish Massive ABC Notation (IrishMAN)** dataset includes 216,284 Irish tunes in ABC notation, divided into 99\% (214,122 tunes) for training and 1\% (2,162 tunes) for validation. These tunes were collected from thesession.org and abcnotation.com, both renowned for sharing traditional music. To ensure uniformity in formatting, all tunes were converted to XML and then back to ABC using [scripts](https://wim.vree.org/svgParse/), and fields containing natural language (e.g., titles and lyrics) were removed.
 
 Each tune is automatically annotated with control codes derived from ABC symbols, as described in Section 2.2. These control codes offer insights into the musical forms and structures of each composition.