update README.md

byemaxx · Sep 12, 2024 · 893cdbd · 893cdbd
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diff --git a/Docs/MetaX_Cookbook.assets/OTF_Structure.png b/Docs/MetaX_Cookbook.assets/OTF_Structure.png
diff --git a/README.md b/README.md
@@ -6,7 +6,15 @@ MetaX also features <u>statistical modules</u> and <u>plotting tools</u> for ana
 
 
 ![abstract](https://github.com/byemaxx/MetaX/raw/main/Docs/MetaX_Cookbook.assets/abstract.png)
-## Taxa-Functions Linkage
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+## Operational Taxon-Function (OTF)
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+**Operational Taxon-Function (OTF) Unit**: An operational unit which represents the association between specific taxa and biological functions. 
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+![OTF_Structure](https://github.com/byemaxx/MetaX/raw/main/Docs/MetaX_Cookbook.assets/OTF_Structure.png)
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+## OTFs Network
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 Linking Taxa and Functions in different levels of the hierarchy, and different functional categories. e.g., **Species-KO**, **Genus-CAZy**, **Phylum-EC**, etc.
 
 - ![OTF](https://github.com/byemaxx/MetaX/raw/main/Docs/MetaX_Cookbook.assets/tf_link_net.png)