update readme file

Author: azadsadr

README.md

@@ -1 +1,7 @@
-# Recommender-System
+# Hyybrid Recommendation System
+
+This project is implementation of a hybrid recommender system:
+* Model-based Collaborative-filtering technique in PyTorch
+* Bayesian Average method.
+
+the Model-based Collaborative-filtering technique uses non-negative matrix factorization and is applied for existing users. In case of adding new user to database without any historical data (cold start), the Bayesian Average has been applied.

recsys.ipynb

@@ -5,8 +5,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "# **Recommendation system**\n",
-    "here we will build a hybrid recommender system using Model-based Collaborative-filtering tecnique in PyTorch and Bayesian average method."
+    "# **Recommendation system**"
    ]
   },
   {