cluster_search/commit

remove unused module imports

diff --git a/lib/cluster_search/filter.pl b/lib/cluster_search/filter.pl
index 9d4e698..aa2687d 100644
--- a/lib/cluster_search/filter.pl
+++ b/lib/cluster_search/filter.pl
@@ -24,7 +24,7 @@
 :- module(filter,
 	  [ target_goal/3,            % +Goal, +R, +Options
 	    filter_to_goal/4,		% +FilterList, +R, -Goal, +Options
-	    search_filter/2,		% 
+	    search_filter/2,		%
 
 	    filter_from_parameters/2,   % +Options, -Filter
 	    filter_from_parameters/3,   % +Options, -Filter, -Rest
@@ -34,19 +34,12 @@
 	  ]).
 
 :- use_module(library(semweb/rdf_db)).
-:- use_module(library(semweb/rdfs)).
-:- use_module(library(semweb/owl)).
 :- use_module(library(semweb/rdf_label)).
 
-:- use_module(library(debug)).
 :- use_module(library(error)).
-:- use_module(library(option)).
-:- use_module(library(pairs)).
 :- use_module(library(lists)).
-:- use_module(library(assoc)).
 :- use_module(library(settings)).
 
-:- use_module(rdf_graph).
 :- use_module(rdf_search).
 :- use_module(graph_search).
 :- use_module(rdfs_plus_skos).
diff --git a/lib/cluster_search/fuzzy.pl b/lib/cluster_search/fuzzy.pl
index b01d46a..9bbbe3e 100644
--- a/lib/cluster_search/fuzzy.pl
+++ b/lib/cluster_search/fuzzy.pl
@@ -27,10 +27,8 @@
 	    stem_find_literal/2,	% +Spec, -Literal
 	    literal_distance/3		% +L1, +L2, -D
 	  ]).
-:- use_module(library('semweb/rdf_db')).
-:- use_module(library('semweb/rdf_litindex')).
-:- use_module(library('http/dcg_basics')).
-:- use_module(library(debug)).
+
+:- use_module(library(semweb/rdf_litindex)).
 :- use_module(library(lists)).
 :- use_module(library(find_resource)).
 :- use_module(library(porter_stem)).
diff --git a/lib/cluster_search/graph_search.pl b/lib/cluster_search/graph_search.pl
index d2f575e..8f6f425 100644
--- a/lib/cluster_search/graph_search.pl
+++ b/lib/cluster_search/graph_search.pl
@@ -27,21 +27,14 @@
 	  ]).
 
 :- use_module(library(semweb/rdf_db)).
-% :- use_module(library(semweb/owl')).
 :- use_module(library(debug)).
 :- use_module(library(option)).
-:- use_module(library(pairs)).
-:- use_module(library(lists)).
-:- use_module(library(assoc)).
 :- use_module(library(settings)).
 
 % util modules
-:- use_module(rdf_graph).
 :- use_module(rdf_search).
 :- use_module(rdf_direct_search).
-:- use_module(rdf_hierarchy_search).
 :- use_module(rdf_backward_search).
-:- use_module(rdf_full_search).
 :- use_module(filter).
 
 
diff --git a/lib/cluster_search/kwd_search.pl b/lib/cluster_search/kwd_search.pl
index 55cc819..54df40d 100644
--- a/lib/cluster_search/kwd_search.pl
+++ b/lib/cluster_search/kwd_search.pl
@@ -32,16 +32,13 @@
 :- use_module(library(lists)).
 :- use_module(library(assoc)).
 :- use_module(library(debug)).
-:- use_module(library('semweb/rdf_db')).
-:- use_module(library('semweb/rdfs')).
-:- use_module(library('semweb/rdf_litindex')).
+:- use_module(library(semweb/rdf_db)).
+:- use_module(library(semweb/rdfs)).
+:- use_module(library(semweb/rdf_litindex)).
 :- use_module(library(porter_stem)).
 :- use_module(library(semweb/owl)).
-:- use_module(library(find_resource)).
-:- use_module(rdf_graph).
 :- use_module(rdf_search).
 :- use_module(rdf_cluster).
-:- use_module(library(semweb/rdf_abstract)).
 :- use_module(graph_search).
 :- use_module(fuzzy).
 
diff --git a/lib/cluster_search/parameters.pl b/lib/cluster_search/parameters.pl
index 51c1f0f..7fcfb90 100644
--- a/lib/cluster_search/parameters.pl
+++ b/lib/cluster_search/parameters.pl
@@ -30,8 +30,6 @@
 
 :- use_module(library(http/json_convert)).
 :- use_module(library(http/json)).
-:- use_module(library(http/http_parameters)).
-
 :- use_module(library(semweb/rdf_db)).
 
 /** <module> Utilities for fetching HTTP request parameters
diff --git a/lib/cluster_search/rdf_backward_search.pl b/lib/cluster_search/rdf_backward_search.pl
index a740dc0..a009028 100644
--- a/lib/cluster_search/rdf_backward_search.pl
+++ b/lib/cluster_search/rdf_backward_search.pl
@@ -27,10 +27,6 @@
 	  ]).
 
 :- use_module(rdf_search).
-:- use_module(rdf_graph).
-:- use_module(library(assoc)).
-:- use_module(library(url)).
-:- use_module(library(pairs)).
 :- use_module(library(lists)).
 :- use_module(library(debug)).
 :- use_module(library(option)).
diff --git a/lib/cluster_search/rdf_cluster.pl b/lib/cluster_search/rdf_cluster.pl
index 91c2b4c..b8175cc 100644
--- a/lib/cluster_search/rdf_cluster.pl
+++ b/lib/cluster_search/rdf_cluster.pl
@@ -42,14 +42,10 @@
 :- use_module(library(semweb/rdf_db)).
 :- use_module(library(semweb/rdfs)).
 :- use_module(library(semweb/rdf_label)).
-:- use_module(library(semweb/rdf_abstract)).
 :- use_module(library(assoc)).
-:- use_module(library(rbtrees)).
 :- use_module(library(lists)).
 :- use_module(library(debug)).
 :- use_module(rdf_graph).
-:- use_module(rdf_search).
-:- use_module(graph_search).
 :- use_module(rdf_backward_search).
 
 
diff --git a/lib/cluster_search/rdf_direct_search.pl b/lib/cluster_search/rdf_direct_search.pl
index 74a73c7..c471d30 100644
--- a/lib/cluster_search/rdf_direct_search.pl
+++ b/lib/cluster_search/rdf_direct_search.pl
@@ -22,22 +22,18 @@
 */
 
 :- module(rdf_direct_search,
-	  [ rdf_concept_search/4, 	 % +KeyWord, +TargetCond, -State, +Options
+	  [ rdf_concept_search/4,	 % +KeyWord, +TargetCond, -State, +Options
 	    rdf_literal_search/4 % +KeyWord, +TargetCond, -State, +Options
 	  ]).
 
 :- use_module(library(record)).
-:- use_module(library(assoc)).
-:- use_module(library(url)).
-:- use_module(library(pairs)).
 :- use_module(library(lists)).
 :- use_module(library(debug)).
 :- use_module(library(option)).
 :- use_module(library(semweb/rdf_db)).
 :- use_module(library(semweb/rdfs)).
-:- use_module(filter).
 :- use_module(rdf_search).
-:- use_module(rdf_graph).
+
 
 /** <module> Direct metadata search on RDF graph
 
diff --git a/lib/cluster_search/rdf_full_search.pl b/lib/cluster_search/rdf_full_search.pl
index ac3f161..6a6c3d0 100644
--- a/lib/cluster_search/rdf_full_search.pl
+++ b/lib/cluster_search/rdf_full_search.pl
@@ -22,22 +22,15 @@
 */
 
 :- module(rdf_full_search,
-	  [ rdf_full_search/4 	% +KeyWord, +TargetCond, -State, +Options
+	  [ rdf_full_search/4	% +KeyWord, +TargetCond, -State, +Options
 	  ]).
 
 :- use_module(rdf_search).
-:- use_module(rdf_graph).
-:- use_module(kwd_search).
-:- use_module(library(record)).
-:- use_module(library(assoc)).
-:- use_module(library(url)).
-:- use_module(library(pairs)).
 :- use_module(library(lists)).
 :- use_module(library(debug)).
 :- use_module(library(option)).
 :- use_module(library(semweb/rdf_db)).
 :- use_module(library(semweb/rdfs)).
-:- use_module(filter).
 
 /** <module> Full search on RDF graph
 
diff --git a/lib/cluster_search/rdf_graph.pl b/lib/cluster_search/rdf_graph.pl
index 3b8c756..e553341 100644
--- a/lib/cluster_search/rdf_graph.pl
+++ b/lib/cluster_search/rdf_graph.pl
@@ -51,10 +51,9 @@
 :- use_module(library(record)).
 :- use_module(library(rbtrees)).
 :- use_module(library(error)).
-:- use_module(library(debug)).
 :- use_module(library(lists)).
 :- use_module(library(option)).
-:- use_module(library('semweb/rdf_db')).
+:- use_module(library(semweb/rdf_db)).
 
 /** <module> Representing RDF search paths
 
diff --git a/lib/cluster_search/rdf_hierarchy_search.pl b/lib/cluster_search/rdf_hierarchy_search.pl
index 18c55e7..d500a27 100644
--- a/lib/cluster_search/rdf_hierarchy_search.pl
+++ b/lib/cluster_search/rdf_hierarchy_search.pl
@@ -27,18 +27,7 @@
 
 :- use_module(library(semweb/rdf_db)).
 :- use_module(library(semweb/rdfs)).
-:- use_module(library(record)).
-:- use_module(library(assoc)).
-:- use_module(library(url)).
-:- use_module(library(pairs)).
-:- use_module(library(lists)).
-:- use_module(library(debug)).
-:- use_module(library(option)).
-:- use_module(filter).
-:- use_module(iface_util).
 :- use_module(rdf_search).
-:- use_module(rdf_graph).
-:- use_module(kwd_search).
 
 /** <module> Direct metadata and hierarchy search on RDF graph
 
diff --git a/lib/cluster_search/rdf_search.pl b/lib/cluster_search/rdf_search.pl
index 8acb102..56adcd9 100644
--- a/lib/cluster_search/rdf_search.pl
+++ b/lib/cluster_search/rdf_search.pl
@@ -44,7 +44,6 @@
 
 :- use_module(rdf_graph).
 :- use_module(kwd_search).
-:- use_module(filter).
 
 /** <module> Search RDF graph
 
diff --git a/lib/cluster_search/rdfs_plus_skos.pl b/lib/cluster_search/rdfs_plus_skos.pl
index 96ff9f7..c8d71d2 100644
--- a/lib/cluster_search/rdfs_plus_skos.pl
+++ b/lib/cluster_search/rdfs_plus_skos.pl
@@ -35,9 +35,8 @@
 
 :- use_module(library(assoc)).
 :- use_module(library(error)).
-:- use_module(library(debug)).
-:- use_module(library('semweb/rdf_db')).
-:- use_module(library('semweb/rdfs')).
+:- use_module(library(semweb/rdf_db)).
+:- use_module(library(semweb/rdfs)).
 
 
 :- rdf_meta
diff --git a/lib/cluster_search/settings.pl b/lib/cluster_search/settings.pl
index d3a62e2..ef84488 100644
--- a/lib/cluster_search/settings.pl
+++ b/lib/cluster_search/settings.pl
@@ -1,8 +1,9 @@
 :- module(cluster_search_settings, []).
 
-/***************************************************
+:- use_module(library(settings)).
 
-* Settings
+/***************************************************
+* Cluster search settings
 ***************************************************/
 
 :- setting(search:basic_search_target, uri, rdfs:'Resource',