change keeper name to tagger

app/logical/post_keeper_manager.rb

@@ -7,9 +7,13 @@ class PostKeeperManager
     delay(queue: "default").check_and_update(post_id)
   end
 
+  # in general, unweighted changes attribution 5% of the time,
+  # weighted changes attribution 12% of the time at w=1000,
+  # up to 17% of the time at w=100.
   def self.evaluate(post_ids)
     total = 0
     matches = 0
+    weighted_matches = 0
     keeper_dist = {}
     uploader_dist = {}
     Post.where(id: post_ids).find_each do |post|
@@ -17,15 +21,20 @@ class PostKeeperManager
       total += 1
       if keeper != post.uploader_id
         matches += 1
-        keeper_dist[keeper] ||= 0
-        keeper_dist[keeper] += 1
-        uploader_dist[post.uploader_id] ||= 0
-        uploader_dist[post.uploader_id] += 1
+        # keeper_dist[keeper] ||= 0
+        # keeper_dist[keeper] += 1
+        # uploader_dist[post.uploader_id] ||= 0
+        # uploader_dist[post.uploader_id] += 1
+      end
+      if check_weighted(post) != post.uploader_id
+        puts post.id
+        weighted_matches += 1
       end
     end
 
     puts "total: #{total}"
-    puts "changes: #{matches}"
+    puts "unweighted changes: #{matches}"
+    puts "weighted changes: #{weighted_matches}"
     # puts "keepers:"
     # keeper_dist.each do |k, v|
     #   puts "  #{k}: #{v}"
@@ -44,6 +53,72 @@ class PostKeeperManager
     end
   end
 
+  def self.print_weighted(post, w = 1000)
+    changes = {}
+    final_tags = Set.new(post.tag_array)
+
+    # build a mapping of who added a tag first
+    PostArchive.where(post_id: post.id).order("updated_at").each do |pa|
+      pa.added_tags.each do |at|
+        if pa.updater_id
+          if !changes.has_key?(at) && final_tags.include?(at)
+            changes[at] = pa.updater_id 
+          end
+
+          if pa.source_changed? && pa.source == post.source
+            changes[" source"] = pa.updater_id
+          end
+        end
+      end
+    end
+
+    # add up how many changes each user has made
+    ranking = changes.values.uniq.inject({}) do |h, user_id|
+      h[user_id] = changes.select {|k, v| v == user_id}.map do |tag, user_id|
+        count = Tag.find_by_name(tag).try(:post_count) || 0
+        1.0 / (w + count)
+      end.sum
+      h
+    end
+
+    ranking.sort_by {|k, v| v}.each do |user_id, score|
+      user = User.find(user_id)
+      sum = changes.select {|k, v| v == user_id}.size
+      Rails.logger.debug "#{user.name}: %.4f (%d)" % [score, sum]
+    end
+  end
+
+  def self.check_weighted(post, w = 1000)
+    changes = {}
+    final_tags = Set.new(post.tag_array)
+
+    # build a mapping of who added a tag first
+    PostArchive.where(post_id: post.id).order("updated_at").each do |pa|
+      pa.added_tags.each do |at|
+        if pa.updater_id
+          if !changes.has_key?(at) && final_tags.include?(at)
+            changes[at] = pa.updater_id 
+          end
+
+          if pa.source_changed? && pa.source == post.source
+            changes[" source"] = pa.updater_id
+          end
+        end
+      end
+    end
+
+    # add up how many changes each user has made
+    ranking = changes.values.uniq.inject({}) do |h, user_id|
+      h[user_id] = changes.select {|k, v| v == user_id}.map do |tag, user_id|
+        count = Tag.find_by_name(tag).try(:post_count) || 0
+        1.0 / (w + count)
+      end.sum
+      h
+    end
+
+    ranking.max_by {|k, v| v}.first
+  end
+
   def self.check(post)
     changes = {}
     final_tags = Set.new(post.tag_array)
@@ -84,20 +159,10 @@ class PostKeeperManager
 
     # add up how many changes each user has made
     ranking = changes.values.uniq.inject({}) do |h, user_id|
-      # h[user_id] = changes.select {|k, v| v == user_id}.map do |tag, user_id|
-      #   count = Tag.find_by_name(tag).try(:post_count) || 0
-      #   1.0 / (1000 + count)
-      # end.sum
       h[user_id] = changes.select {|k, v| v == user_id}.size
       h
     end
 
-    # ranking.sort_by {|k, v| v}.each do |user_id, score|
-    #   user = User.find(user_id)
-    #   sum = changes.select {|k, v| v == user_id}.size
-    #   Rails.logger.debug "#{user.name}: %.4f (%d)" % [score, sum]
-    # end
-
     ranking.max_by {|k, v| v}.first
   end
 end

app/views/posts/partials/show/_information.html.erb

@@ -1,6 +1,6 @@
 <ul itemscope itemtype="http://schema.org/ImageObject">
   <li>ID: <%= post.id %></li>
-  <li>Keeper: <%= link_to_user(post.keeper) %></li>
+  <li>Tagger: <%= link_to_user(post.keeper) %></li>
   <li>
     Date: <%= link_to time_ago_in_words_tagged(post.created_at), posts_path(:tags => "date:#{post.created_at.to_date}"), :rel => "nofollow" %>
     <meta itemprop="uploadDate" content="<%= post.created_at.iso8601 %>">