Replaced the custom weighting calculation by making use of MusicBrainz scoring scheme.

lib/musicbrainz/artist.rb

@@ -46,19 +46,6 @@ module MusicBrainz
           :query => CGI.escape(name).gsub(/\!/, '\!') + '~',
           :limit => 50
         })
-        artists.each { |artist|
-          if artist[:name].downcase == name.downcase
-            artist[:weight] += 80
-          elsif artist[:name].downcase.gsub(/\s/, "") == name.downcase.gsub(/\s/, "")
-            artist[:weight] += 25
-          elsif artist[:aliases].include? name
-            artist[:weight] += 20
-          elsif artist[:aliases].map { |item| item.downcase }.include?(name.downcase)
-            artist[:weight] += 10
-          elsif artist[:aliases].map { |item| item.downcase.gsub(/\s/, "") }.include?(name.downcase.gsub(/\s/, ""))
-            artist[:weight] += 5
-          end
-        }
         artists.sort{ |a, b| b[:weight] <=> a[:weight] }.take(10)
       end
 

lib/parsers/artist.rb

@@ -26,7 +26,7 @@ module MusicBrainz
             artists << {
               :name => a.first_element_child.text.gsub(/[`’]/, "'"),
               :sort_name => safe_get_value(a, "sort-name").gsub(/[`’]/, "'"),
-              :weight => 0,
+              :score => (safe_get_attr(a, nil, "score") .to_i rescue 0),
               :desc => safe_get_value(a, "disambiguation"),
               :type => safe_get_attr(a, nil, "type"),
               :mbid => safe_get_attr(a, nil, "id"),

spec/requests/artist_spec.rb

@@ -20,6 +20,19 @@ describe MusicBrainz::Artist do
     matches.first[:name].should == "Kasabian"
   end
 
+  it "should return search results in the right order and pass back the correct score" do
+    matches = MusicBrainz::Artist.search('Chris Martin')
+    
+    matches.first[:score].should == 100
+    matches.first[:mbid].should == "98d1ec5a-dd97-4c0b-9c83-7928aac89bca"
+    matches[1][:score].should == 100
+    matches[1][:mbid].should == "af2ab893-3212-4226-9e73-73a1660b6952"
+    matches[2][:score].should == 95
+    matches[2][:mbid].should == "444d1b63-534b-4ea6-89f0-0af6ab2e20c3"
+    matches[3][:score].should == 95
+    matches[3][:mbid].should == "90fff570-a4ef-4cd4-ba21-e00c7261b05a"
+  end
+  
   it "finds name first than alias" do
     matches = MusicBrainz::Artist.search('Chris Martin')
     matches.length.should be > 0