diff --git a/nb-configuration.xml b/nb-configuration.xml
index 63ebc4a..88c05d0 100644
--- a/nb-configuration.xml
+++ b/nb-configuration.xml
@@ -1,18 +1,19 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project-shared-configuration>
-    <!--
-This file contains additional configuration written by modules in the NetBeans IDE.
-The configuration is intended to be shared among all the users of project and
-therefore it is assumed to be part of version control checkout.
-Without this configuration present, some functionality in the IDE may be limited or fail altogether.
+    <!--
+This file contains additional configuration written by modules in the NetBeans IDE.
+The configuration is intended to be shared among all the users of project and
+therefore it is assumed to be part of version control checkout.
+Without this configuration present, some functionality in the IDE may be limited or fail altogether.
 -->
     <properties xmlns="http://www.netbeans.org/ns/maven-properties-data/1">
-        <!--
-Properties that influence various parts of the IDE, especially code formatting and the like. 
-You can copy and paste the single properties, into the pom.xml file and the IDE will pick them up.
-That way multiple projects can share the same settings (useful for formatting rules for example).
-Any value defined here will override the pom.xml file value but is only applicable to the current project.
+        <!--
+Properties that influence various parts of the IDE, especially code formatting and the like. 
+You can copy and paste the single properties, into the pom.xml file and the IDE will pick them up.
+That way multiple projects can share the same settings (useful for formatting rules for example).
+Any value defined here will override the pom.xml file value but is only applicable to the current project.
 -->
         <netbeans.hint.license>apache20</netbeans.hint.license>
     </properties>
+    
 </project-shared-configuration>
diff --git a/pom.xml b/pom.xml
index 55e6d5a..6e4f87f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -3,7 +3,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>certh.iti.mklab</groupId>
     <artifactId>jSimilarity</artifactId>
-    <version>1.0-SNAPSHOT</version>
+    <version>0.1</version>
     <packaging>jar</packaging>
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
@@ -16,6 +16,11 @@
             <artifactId>commons-lang3</artifactId>
             <version>3.4</version>
         </dependency>
+        <dependency>
+            <groupId>org.apache.commons</groupId>
+            <artifactId>commons-collections4</artifactId>
+            <version>4.1</version>
+        </dependency>
     </dependencies>
     <name>jSimilarity</name>
 </project>
\ No newline at end of file
diff --git a/src/main/java/certh/iti/mklab/jSimilarity/Main.java b/src/main/java/certh/iti/mklab/jSimilarity/Main.java
index 811ba7d..4de8507 100644
--- a/src/main/java/certh/iti/mklab/jSimilarity/Main.java
+++ b/src/main/java/certh/iti/mklab/jSimilarity/Main.java
@@ -17,8 +17,8 @@
 
 import certh.iti.mklab.jSimilarity.documentUtils.Corpus;
 import certh.iti.mklab.jSimilarity.documentUtils.TextDocument;
-import certh.iti.mklab.jsimilarity.tfidf.SoftTFIDF;
-import certh.iti.mklab.jsimilarity.tfidf.TFIDF;
+import certh.iti.mklab.jSimilarity.tfidf.SoftTFIDF;
+import certh.iti.mklab.jSimilarity.tfidf.TFIDF;
 
 /**
  *
@@ -27,16 +27,15 @@
 public class Main {
 
     public static void main(String[] args) {
-
-        TextDocument document1 = new TextDocument("Bank of China");
-        TextDocument document2 = new TextDocument("Bank of China Limited");
-        TextDocument document3 = new TextDocument("Adidas AG");
-        TextDocument document4 = new TextDocument("Adidas Group");
-        TextDocument document5 = new TextDocument("Adidas");
-        TextDocument document6 = new TextDocument("BMW Group");
-        TextDocument document7 = new TextDocument("Nike Inc");
-        TextDocument document8 = new TextDocument("PetroChina Company Limited");
-        TextDocument document9 = new TextDocument("PetroChina Comany");
+        TextDocument document1 = new TextDocument.Builder("Bank of China").build();
+        TextDocument document2 = new TextDocument.Builder("Bank of China Limited").build();
+        TextDocument document3 = new TextDocument.Builder("Adidas AG").build();
+        TextDocument document4 = new TextDocument.Builder("Adidas Group").build();
+        TextDocument document5 = new TextDocument.Builder("Adidas").build();
+        TextDocument document6 = new TextDocument.Builder("BMW Group").build();
+        TextDocument document7 = new TextDocument.Builder("Nike Inc").build();
+        TextDocument document8 = new TextDocument.Builder("PetroChina Company Limited").build();
+        TextDocument document9 = new TextDocument.Builder("PetroChina Comany").build();
 
         Corpus corpus = new Corpus();
         corpus.addDocument(document1);