diff --git a/docs/intro.md b/docs/intro.md
index 1f2830e..c18df18 100644
--- a/docs/intro.md
+++ b/docs/intro.md
@@ -1,5 +1,6 @@
 ---
 slug: /
+id: intro
 sidebar_position: 1
 ---
 
diff --git a/docusaurus.config.js b/docusaurus.config.js
index a8e42de..4af01ab 100644
--- a/docusaurus.config.js
+++ b/docusaurus.config.js
@@ -5,6 +5,7 @@ const lightCodeTheme = require('prism-react-renderer/themes/github');
 const darkCodeTheme = require('prism-react-renderer/themes/dracula');
 const math = require('remark-math');
 const katex = require('rehype-katex');
+const { filterItems } = require('./sidebar-utils');
 
 /** @type {import('@docusaurus/types').Config} */
 const config = {
@@ -38,7 +39,16 @@ const config = {
           routeBasePath: '/', // serve the docs at the site's route
 
           sidebarPath: require.resolve('./sidebars.js'),
+          async sidebarItemsGenerator({ defaultSidebarItemsGenerator, ...args }) {
+            const sidebarItems = await defaultSidebarItemsGenerator(args); 
 
+            const itemsToFilterOut = [ 
+              'data-model/entities/entity-identifiers', 
+              'data-model/entities/other'
+            ];
+
+            return filterItems(sidebarItems, itemsToFilterOut);
+          },
           // Please change this to your repo.
           // Remove this to remove the "edit this page" links.
           // editUrl:
diff --git a/sidebar-utils.js b/sidebar-utils.js
new file mode 100644
index 0000000..c910d53
--- /dev/null
+++ b/sidebar-utils.js
@@ -0,0 +1,18 @@
+// filter out specific items from the sidebar
+function filterItems(items, itemsToFilter) {
+
+    // filter out items of categories
+    let result = items.map((item) => {
+      if (item.type === 'category') {
+        return {...item, items: filterItems(item.items, itemsToFilter)};
+      }
+      return item;
+    });
+  
+    // filter out items in current level
+    return result.filter( item => !itemsToFilter.includes(item.id) );
+  }
+
+  module.exports = {
+    filterItems
+  };
\ No newline at end of file