diff --git a/src/main/java/org/gcube/dataanalysis/ecoengine/transducers/BioClimateHSPENTransducer.java b/src/main/java/org/gcube/dataanalysis/ecoengine/transducers/BioClimateHSPENTransducer.java
index 1a7a26f..f803fdb 100644
--- a/src/main/java/org/gcube/dataanalysis/ecoengine/transducers/BioClimateHSPENTransducer.java
+++ b/src/main/java/org/gcube/dataanalysis/ecoengine/transducers/BioClimateHSPENTransducer.java
@@ -44,7 +44,7 @@ public class BioClimateHSPENTransducer extends BioClimateHSPECTransducer{
 		DatabaseType p6 = new DatabaseType(DatabaseParameters.DATABASETABLESPACE, "DatabaseTableSpace", "db dialect");
 
 		List<TableTemplates> templateHspec = new ArrayList<TableTemplates>();
-		templateHspec.add(TableTemplates.HCAF);
+		templateHspec.add(TableTemplates.HSPEN);
 		TablesList p7 = new TablesList(templateHspec, "HSPEN_TABLE_LIST", "List of HSPEN tables containing the species for which the salinity will be analyzed", false);
 		PrimitiveTypesList p8 = new PrimitiveTypesList(PrimitiveTypes.STRING, "HSPEN_TABLE_NAMES", "List of HSPEN table names to be used as labels", false);
 		
diff --git a/src/main/java/org/gcube/dataanalysis/ecoengine/transducers/OccurrencePointsMerger.java b/src/main/java/org/gcube/dataanalysis/ecoengine/transducers/OccurrencePointsMerger.java
new file mode 100644
index 0000000..966b48b
--- /dev/null
+++ b/src/main/java/org/gcube/dataanalysis/ecoengine/transducers/OccurrencePointsMerger.java
@@ -0,0 +1,343 @@
+package org.gcube.dataanalysis.ecoengine.transducers;
+
+import java.util.ArrayList;
+import java.util.Calendar;
+import java.util.List;
+
+import org.gcube.contentmanagement.graphtools.utils.DateGuesser;
+import org.gcube.contentmanagement.lexicalmatcher.utils.AnalysisLogger;
+import org.gcube.contentmanagement.lexicalmatcher.utils.DatabaseFactory;
+import org.gcube.dataanalysis.ecoengine.configuration.AlgorithmConfiguration;
+import org.gcube.dataanalysis.ecoengine.configuration.INFRASTRUCTURE;
+import org.gcube.dataanalysis.ecoengine.datatypes.StatisticalType;
+import org.gcube.dataanalysis.ecoengine.interfaces.Transducerer;
+import org.gcube.dataanalysis.ecoengine.test.regression.Regressor;
+import org.gcube.dataanalysis.ecoengine.utils.DatabaseUtils;
+import org.hibernate.SessionFactory;
+
+public class OccurrencePointsMerger implements Transducerer{
+
+	static String longitudeColumn= "longitudeColumn";
+	static String latitudeColumn= "latitudeColumn";
+	static String recordedByColumn= "recordedByColumn";
+	static String scientificNameColumn = "scientificNameColumn";
+	static String eventDateColumn = "eventDateColumn";
+	static String lastModificationColumn = "lastModificationColumn";
+	static String rightTableNameF= "rightTableName";
+	static String leftTableNameF = "leftTableName";
+	static String mergedTableNameF = "mergedTableName";
+	static String spatialTolerance= "spatialTolerance";
+	static String confidence= "confidence";
+	
+	protected List<OccurrenceRecord> records_left;
+	protected List<OccurrenceRecord> records_right;
+	protected AlgorithmConfiguration config;
+	
+	protected String lonFld;
+	protected String latFld;
+	protected String recordedByFld;
+	protected String scientificNameFld;
+	protected String eventDatFld;
+	protected String modifDatFld;
+	protected String leftTableName;
+	protected String rightTableName;
+	protected String mergedTableName;
+	protected float spatialToleranceValue;
+	protected float confidenceValue;
+	protected StringBuffer columns;
+	protected List<OccurrenceRecord> objectstoinsert;
+	protected List<OccurrenceRecord> objectstodelete;
+	protected List<Object> columnsNames;
+	protected SessionFactory dbconnection;
+	
+	protected class OccurrenceRecord{
+		
+		public String scientificName;
+		public String recordedby;
+		public Calendar eventdate;
+		public Calendar modifdate;
+//		public String locality;
+//		public String country;
+		public float x;
+		public float y;
+		
+//		Map<String,String> metadata;
+		public List<String> otherValues;
+		public OccurrenceRecord(){
+			otherValues = new ArrayList<String>();
+		}
+	}
+
+
+	public OccurrenceRecord row2OccurrenceRecord(Object[] row){
+		OccurrenceRecord record = new OccurrenceRecord();
+		int index = 0;
+		for (Object name:columnsNames){
+			String name$ = ""+name;
+			String value$ = ""+row[index];
+			if (name$.equalsIgnoreCase(lonFld)){
+				record.x=Float.parseFloat(value$);
+			}
+			else if (name$.equalsIgnoreCase(latFld)){
+				record.y=Float.parseFloat(value$);
+			}
+			else if (name$.equalsIgnoreCase(recordedByFld)){
+				record.recordedby=value$;
+			}
+			else if (name$.equalsIgnoreCase(eventDatFld)){
+				record.eventdate=DateGuesser.convertDate(value$);
+			}
+			else if (name$.equalsIgnoreCase(modifDatFld)){
+				record.modifdate=DateGuesser.convertDate(value$);
+			}
+			else
+				record.otherValues.add(value$);
+			
+			index++;
+		}
+		
+		return record;
+	}
+	
+	public String occurrenceRecord2String(OccurrenceRecord record){
+		StringBuffer buffer =new StringBuffer();
+		int index = 0;
+		int nNames = columnsNames.size();
+		for (Object name:columnsNames){
+			
+			String name$ = ""+name;
+			String value$ = null;
+			if (name$.equalsIgnoreCase(lonFld)){
+				value$="'"+record.x+"'";
+			}
+			else if (name$.equalsIgnoreCase(latFld)){
+				value$="'"+record.y+"'";
+			}
+			else if (name$.equalsIgnoreCase(recordedByFld)){
+				value$="'"+record.recordedby+"'";
+			}
+			else if (name$.equalsIgnoreCase(eventDatFld)){
+				value$="'"+record.eventdate.toString()+"'";
+			}
+			else if (name$.equalsIgnoreCase(modifDatFld)){
+				value$="'"+record.modifdate.toString()+"'"; 
+			}
+			else
+				value$ = "'"+record.otherValues.get(index)+"'";
+			
+			buffer.append(value$);
+			if (index<nNames-1){
+				buffer.append(",");
+			}
+			
+			index++;
+		}
+		
+		return buffer.toString();
+	}
+	
+	
+	public static void main(String[] args) {
+		AlgorithmConfiguration config = Regressor.getConfig();
+		config.setNumberOfResources(1);
+		config.setParam(longitudeColumn,"presence_basking_cluster");
+		config.setParam(latitudeColumn,"centerlong"+AlgorithmConfiguration.getListSeparator()+"centerlat");
+		config.setParam("OccurrencePointsClusterTable","occcluster_xmeans");
+		config.setParam("maxIterations","1000");
+		config.setParam("minClusters","20");
+		config.setParam("maxClusters","30");
+		config.setParam("min_points","1");
+		
+		lonFld=config.getParam(longitudeColumn);
+		latFld=config.getParam(latitudeColumn);
+		recordedByFld=config.getParam(recordedByColumn);
+		scientificNameFld=config.getParam(scientificNameColumn);
+		eventDatFld=config.getParam(eventDateColumn);
+		modifDatFld=config.getParam(lastModificationColumn);
+		leftTableName=config.getParam(leftTableNameF);
+		rightTableName=config.getParam(rightTableNameF);
+		mergedTableName=config.getParam(mergedTableNameF);
+		spatialToleranceValue=Float.parseFloat(config.getParam(spatialTolerance));
+		confidenceValue=Float.parseFloat(config.getParam(confidence));
+		
+	}
+	
+	@Override
+	public List<StatisticalType> getInputParameters() {
+		// TODO Auto-generated method stub
+		return null;
+	}
+
+
+	@Override
+	public String getResourceLoad() {
+		// TODO Auto-generated method stub
+		return null;
+	}
+
+
+	@Override
+	public String getResources() {
+		// TODO Auto-generated method stub
+		return null;
+	}
+
+
+	@Override
+	public float getStatus() {
+		// TODO Auto-generated method stub
+		return 0;
+	}
+
+
+	@Override
+	public INFRASTRUCTURE getInfrastructure() {
+		// TODO Auto-generated method stub
+		return null;
+	}
+
+
+	@Override
+	public StatisticalType getOutput() {
+		// TODO Auto-generated method stub
+		return null;
+	}
+
+
+	@Override
+	public void init() throws Exception {
+		
+		AnalysisLogger.setLogger(config.getConfigPath()+AlgorithmConfiguration.defaultLoggerFile);
+		lonFld=config.getParam(longitudeColumn);
+		latFld=config.getParam(latitudeColumn);
+		recordedByFld=config.getParam(recordedByColumn);
+		scientificNameFld=config.getParam(scientificNameColumn);
+		eventDatFld=config.getParam(eventDateColumn);
+		modifDatFld=config.getParam(lastModificationColumn);
+		leftTableName=config.getParam(leftTableNameF);
+		rightTableName=config.getParam(rightTableNameF);
+		mergedTableName=config.getParam(mergedTableNameF);
+		spatialToleranceValue=Float.parseFloat(config.getParam(spatialTolerance));
+		confidenceValue=Float.parseFloat(config.getParam(confidence));
+		
+		objectstoinsert = new ArrayList<OccurrencePointsMerger.OccurrenceRecord>();
+		objectstodelete = new ArrayList<OccurrencePointsMerger.OccurrenceRecord>();
+	}
+
+
+	@Override
+	public void setConfiguration(AlgorithmConfiguration config) {
+		this.config=config;
+	}
+
+
+	@Override
+	public void shutdown() {
+		// TODO Auto-generated method stub
+		
+	}
+
+
+	@Override
+	public String getDescription() {
+		// TODO Auto-generated method stub
+		return null;
+	}
+
+	protected float extProb(OccurrenceRecord right,OccurrenceRecord left){
+		return (float)Math.random();
+	}
+	
+	protected void manageProbability(float probability, OccurrenceRecord leftOcc, OccurrenceRecord rightOcc){
+	//if over the threshold then add to the complete list of elements
+		if (probability<confidenceValue)
+			objectstoinsert.add(rightOcc);
+	}
+
+	protected void persist(){
+		StringBuffer buffer = new StringBuffer();
+		int toins = objectstoinsert.size();
+		int counter = 0;
+		for (OccurrenceRecord record:objectstoinsert){
+			buffer.append("(");
+			buffer.append(occurrenceRecord2String(record));
+			buffer.append(")");
+			if (counter<toins-1)
+				buffer.append(",");
+
+			counter++;
+		}
+		String updateQ = DatabaseUtils.insertFromBuffer(mergedTableName,columns.toString(),buffer);
+		DatabaseFactory.executeSQLUpdate(updateQ, dbconnection);
+	}
+	
+	@Override
+	public void compute() throws Exception {
+		
+		try{
+			//init DB connection
+			AnalysisLogger.getLogger().trace("Initializing DB Connection");
+			dbconnection = DatabaseUtils.initDBSession(config);
+			AnalysisLogger.getLogger().trace("Taking Table Description");
+			//take the description of the table
+			columnsNames = DatabaseFactory.executeSQLQuery(DatabaseUtils.getColumnsNamesStatement(rightTableName),dbconnection);
+			
+			int nCols = columnsNames.size();
+			columns = new StringBuffer();
+			for (int i=0;i<nCols;i++){
+				columns.append(columnsNames);
+				if (i<nCols-1)
+					columns.append(",");
+			}
+			
+			AnalysisLogger.getLogger().trace("Taken Table Description: "+columns);
+			AnalysisLogger.getLogger().trace("Creating merged table: "+mergedTableName);
+			//create new merged table
+			DatabaseFactory.executeSQLUpdate(DatabaseUtils.dropTableStatement(mergedTableName), dbconnection);
+			DatabaseFactory.executeSQLUpdate(DatabaseUtils.duplicateTableStatement(leftTableName, mergedTableName), dbconnection);
+			//take the elements from sx table
+			AnalysisLogger.getLogger().trace("Taking elements from left table: "+leftTableName);
+			List<Object> leftRows = DatabaseFactory.executeSQLQuery(DatabaseUtils.getColumnsElementsStatement(leftTableName, columns.toString(),""),dbconnection);
+			//take the elements from dx table
+			AnalysisLogger.getLogger().trace("Taking elements from right table: "+rightTableName);
+			List<Object> rightRows = DatabaseFactory.executeSQLQuery(DatabaseUtils.getColumnsElementsStatement(rightTableName, columns.toString(),""),dbconnection);
+			//for each element in dx
+			List<OccurrenceRecord> leftRecords = new ArrayList<OccurrencePointsMerger.OccurrenceRecord>();
+			AnalysisLogger.getLogger().trace("Processing "+leftTableName+" vs "+rightTableName);
+			int iterations = 0;
+			for (Object rRow:rightRows){
+				OccurrenceRecord rightOcc = row2OccurrenceRecord((Object[])rRow);
+				//for each element in sx
+				int k=0;
+				for (Object lRow:leftRows){
+					OccurrenceRecord leftOcc = null;
+					if (iterations==0){
+						leftOcc = row2OccurrenceRecord((Object[])lRow);
+						leftRecords.add(leftOcc);
+					}
+					else
+						leftOcc =leftRecords.get(k); 
+
+					//evaluate P(dx,sx)
+					float p = extProb(leftOcc,rightOcc);
+					manageProbability(p, leftOcc, rightOcc);
+					if (p>=confidenceValue){
+						AnalysisLogger.getLogger().trace("Found a similarity between ("+leftOcc.x+","+leftOcc.y+","+leftOcc.recordedby+ ") "+"("+rightOcc.x+","+rightOcc.y+","+rightOcc.recordedby+")");
+						break;
+					}
+					k++;
+				}
+				iterations++;
+			}
+			//transform the complete list into a table
+			persist();
+			//close DB connection
+		}catch(Exception e){
+			throw e;
+		}
+		finally{
+			if (dbconnection!=null)
+				dbconnection.close();
+		}
+	}
+}
diff --git a/src/main/java/org/gcube/dataanalysis/ecoengine/utils/DatabaseUtils.java b/src/main/java/org/gcube/dataanalysis/ecoengine/utils/DatabaseUtils.java
index df5857a..d033d8d 100644
--- a/src/main/java/org/gcube/dataanalysis/ecoengine/utils/DatabaseUtils.java
+++ b/src/main/java/org/gcube/dataanalysis/ecoengine/utils/DatabaseUtils.java
@@ -8,6 +8,7 @@ import org.hibernate.SessionFactory;
 public class DatabaseUtils {
 
 	static String queryDesc = "SELECT column_name,data_type, character_maximum_length, is_nullable FROM information_schema.COLUMNS WHERE table_name ='%1$s'";
+	static String queryColumns = "SELECT column_name FROM information_schema.COLUMNS WHERE table_name ='%1$s'";
 	static String queryForKeys = "SELECT b.column_name as name, a.constraint_type  as type FROM information_schema.table_constraints as a join information_schema.key_column_usage as b on a.table_name ='%1$s' and a.constraint_name = b.constraint_name";
 	static String genCreationStatement = "CREATE TABLE %1$s ( %2$s  %3$s );";
 	static String updateColValues = "UPDATE %1$s SET %2$s = %3$s.%4$s FROM %3$s WHERE %1$s.%5$s = %3$s.%6$s ;";
@@ -86,7 +87,7 @@ public class DatabaseUtils {
 		columnDescrs = colbuffer.toString();
 	}
 
-	List<Object> columns;
+	public List<Object> columns;
 
 	public List<Object> getColumnDecriptions() {
 		return columns;
@@ -193,6 +194,12 @@ public class DatabaseUtils {
 		return creationStatement;
 	}
 	
+	
+	public static String getColumnsNamesStatement(String table) {
+		String statement = String.format(queryColumns, table);
+		return statement;
+	}
+	
 	public static void createBigTable(boolean createTable, String table, String dbdriver, String dbuser, String dbpassword, String dburl, String creationStatement, SessionFactory dbHibConnection) throws Exception {
 		if (createTable) {
 			try {