fix date parsing

src/main/scala/KMeans.scala

@@ -11,8 +11,8 @@ object KMeans {
 
 
   def train(dataset : DataFrame, iterations:Int) : Unit = {
-    val K = 10 // Number of desired clusters
-    val relevantData = dataset.select("Reputation", "Views", "UpVotes", "DownVotes")
+    val K = 4 // Number of desired clusters
+    val relevantData = dataset.select("Reputation", "LastAccessDate")
     val m = relevantData.columns.length  //number of features
     val rows = relevantData.rdd
     val rowsAsArray = rows.map(row => convertRow(row, m)).persist()

src/main/scala/XMLParser.scala

@@ -62,7 +62,7 @@ object XMLParser {
    */
   private def GenerateSchemaFromString(schemaString: String, schemaType: Array[DataType]) : StructType = {
     // Replace all DateTypes with Longs as date will now be stored as longs.
-    val sT = schemaType.map(i => if (i==DateType) LongType else i)
+    val sT = schemaType.map(i => if (i==DateType) IntegerType else i)
     val schemaPairs = schemaString.split(" ") zip sT
 
     // Create schema for columns and set their datatypes for DataFrame based on attribute names.