added topic/title boost parameters to query

vipra-rest/src/main/java/de/vipra/rest/resource/SearchResource.java

@@ -27,6 +27,7 @@ import org.elasticsearch.search.SearchHits;
 import de.vipra.rest.model.APIError;
 import de.vipra.rest.model.Wrapper;
 import de.vipra.util.Config;
+import de.vipra.util.Constants;
 import de.vipra.util.ESClient;
 import de.vipra.util.MongoUtils;
 import de.vipra.util.ex.ConfigException;
@@ -63,7 +64,9 @@ public class SearchResource {
 
 		SearchResponse response = null;
 		try {
-			response = client.prepareSearch("articles").setQuery(QueryBuilders.multiMatchQuery(query, "_all"))
+			response = client.prepareSearch("articles")
+					.setQuery(QueryBuilders.multiMatchQuery(query, "topics^" + Constants.BOOST_TOPICS,
+							"title^" + Constants.BOOST_TITLES, "_all"))
 					.setFrom(skip).setSize(limit).execute().actionGet();
 		} catch (Exception e) {
 			e.printStackTrace();

vipra-util/src/main/java/de/vipra/util/Constants.java

@@ -36,6 +36,16 @@ public class Constants {
 	public static final String ES_HOST = "127.0.0.1";
 	public static final int ES_PORT = 9300;
 
+	/**
+	 * Topic boost parameter. Boosts topic importance in queries.
+	 */
+	public static final int BOOST_TOPICS = 4;
+
+	/**
+	 * Title boost parameter. Boosts title importance in queries.
+	 */
+	public static final int BOOST_TITLES = 2;
+
 	/*
 	 * TOPIC MODELING
 	 */