Update README.md

Author: iamjagdeesh

README.md

@@ -1,15 +1,15 @@
-# Apache Spark setup and spatial queries execution
+# Large Scale Geo-Spatial Data Analysis using SparkSQL
 
 ## CSE 512 - Distributed and Parallel Database Systems
 
 ## Project description
 
-The project was aimed to setup a spark cluster with HDFS and run SparkSQL queries on the it.
+The project was aimed to setup a spark cluster with HDFS and run SparkSQL queries (geo-spatial) on the it.
 
 * Native spark cluster was used as cluster manager.
 * Hadoop Distributed File System (HDFS) was used as distributed storage system.
 * The setup was done using Amazon EC2 virtual machines as nodes.
-* Spatial queries such as range query, range join query, distance query and distance join query were executed.
+* Spatial queries such as range query, range join query, distance query, distance join query, hot zone analysis and hot cell analysis were executed.
   - Spatial queries were executed by implementing user defined functions such as ST_contains and ST_within in Scala.
   - ST_contains takes a point and a rectangle and returns a boolean indicating whether the point is inside the rectangle.
   - ST_within takes two points and a distance and returns a boolean indication whether the distance between the points is not more than the distance provided.