diff --git a/README.md b/README.md
index bce146720e4de8856fcc3a7c39ce73964f418d59..80a9ec2ccae82e207c9303db6a6b60a728bd28fd 100644
--- a/README.md
+++ b/README.md
@@ -3,8 +3,17 @@
 
 AMR Batch is a python library to parse natural language sentences in order to build AMR graphs. It requires, as input, a textual document, and gives as output a set of AMR graphs corresponding to each sentence of the input document.
 
-This library is currently under development, and therefore in unstable state.
+The library is based on `amrlib` to produce AMR graphs and `amr-ld` to additionaly produce RDF representations of the AMR graphs.
 
+Compared to `amrlib`, AMR Batch is designed to process documents or copora and  adds the following features :
+
+- It processes the text sentence by sentence and produces a directory hierarchy containing different representations of the sentence in AMR :   
+    1. Penman 
+    2. dot
+    3. PNG
+    4. SVG
+    5. AMR-RDF in turtle format
+    6. AMR-RDF in n-triple format
 
 ### Installation
 This project was developp under Python 3.7 and Manjaro Linux system, but should be run on most common systems (Linux, Windows, Mac).
@@ -17,7 +26,7 @@ For example, 'venv' can be create and use with the following commands:
 
     source venv/bin/activate
 
-The necessary libraries are defined in the file 'requirements.txt', and can be installed in the virtual environment using package installer as pip:
+The necessary libraries are defined in the file 'requirements.txt', and can be installed in the virtual environment using package installer as pip :
 
     pip install -r requirements.txt