add abstract

app.py

@@ -210,15 +210,21 @@ def model_card_length_by_autogenerated():
     )
 
 
+_ABSTRACT = """
+tl;dr this dashboard aims to provide an overview of metadata associated with models hosted on the Hugging Face hub. 
+\n
+Each tab of this dashboard focuses on a different aspect of model metadata on the hub. 
+Many of the tabs in the dashboard have a particular focus on the metadata coverage for different libraries in the hub.
+"""
+
+
 df = load_data()
 top_n = df.library.value_counts().shape[0]
 libraries = [library for library in df.library.unique() if library]
 metadata_coverage_columns = [c for c in df.columns if c.startswith("has")]
 with gr.Blocks() as demo:
     gr.Markdown("# 🤗 Hub Metadata Explorer")
-    gr.Markdown(
-        "tl;dr: this dashboard aims to provide an overview of model metadata on the hub"
-    )
+    gr.Markdown(_ABSTRACT)
     with gr.Tab("Tag frequencies"):
         gr.Markdown(
             "Tags are one of the key ways in which users may identify models which are of interest. This tab provides "