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HumanTaskAgent can now accept `combination_mode` and `poll_options` which are used to generate a poll from the HITs answers. The poll asks additional Mechanical Turk users to rate the responses, and then the best one is returned. This allows for an additional step of validation on user generated content / data.

Andrew Cantino 12 年之前
父节点
403db15b35
当前提交
0eb956e110
共有 2 个文件被更改，包括 367 次插入 和 62 次删除
显示文件统计
  1. 196 44
      app/models/agents/human_task_agent.rb
  2. 171 18
      spec/models/agents/human_task_agent_spec.rb

+ 196 - 44
app/models/agents/human_task_agent.rb
查看文件 

@@ -9,9 +9,13 @@ module Agents
9 9
10 10 
       HITs can be created in response to events, or on a schedule.  Set `trigger_on` to either `schedule` or `event`.
11 11
12 
+      # Schedule
13 
+
12 14 
       The schedule of this Agent is how often it should check for completed HITs, __NOT__ how often to submit one.  To configure how often a new HIT
13 15 
       should be submitted when in `schedule` mode, set `submission_period` to a number of hours.
14 16
17 
+      # Example
18 
+
15 19 
       If created with an event, all HIT fields can contain interpolated values via [JSONPaths](http://goessner.net/articles/JsonPath/) placed between < and > characters.
16 20 
       For example, if the incoming event was a Twitter event, you could make a HITT to rate its sentiment like this:
17 21 
 
@@ -58,8 +62,50 @@ module Agents
58 62 
       which contain `key` and `text`.  For _free\\_text_, the special configuration options are all optional, and are
59 63 
       `default`, `min_length`, and `max_length`.
60 64
61 
-      If all of the `questions` are of `type` _selection_, you can set `take_majority` to _true_ at the top level to
62 
-      automatically select the majority vote for each question across all `assignments`.  If all selections are numeric, an `average_answer` will also be generated.
65 
+      # Combining answers
66 
+
67 
+      There are a couple of ways to combine HITs that have multiple `assignments`, all of which involve setting `combination_mode` at the top level.
68 
+
69 
+      ## Taking the majority
70 
+
71 
+      Option 1: if all of your `questions` are of `type` _selection_, you can set `combination_mode` to `take_majority`.
72 
+      This will cause the Agent to automatically select the majority vote for each question across all `assignments` and return it as `majority_answer`.
73 
+      If all selections are numeric, an `average_answer` will also be generated.
74 
+
75 
+      Option 2: you can have the Agent ask additional human workers to rank the `assignments` and return the most highly ranked answer.
76 
+      To do this, set `combination_mode` to `poll` and provide a `poll_options` object.  Here is an example:
77 
+
78 
+          {
79 
+            "trigger_on": "schedule",
80 
+            "submission_period": 12,
81 
+            "combination_mode": "poll",
82 
+            "poll_options": {
83 
+              "title": "Take a poll about some jokes",
84 
+              "instructions": "Please rank these jokes from most funny (5) to least funny (1)",
85 
+              "assignments": 3,
86 
+              "row_template": "<$.joke>"
87 
+            },
88 
+            "hit": {
89 
+              "assignments": 5,
90 
+              "title": "Tell a joke",
91 
+              "description": "Please tell me a joke",
92 
+              "reward": 0.05,
93 
+              "lifetime_in_seconds": "3600",
94 
+              "questions": [
95 
+                {
96 
+                  "type": "free_text",
97 
+                  "key": "joke",
98 
+                  "name": "Your joke",
99 
+                  "required": "true",
100 
+                  "question": "Joke",
101 
+                  "min_length": "2",
102 
+                  "max_length": "2000"
103 
+                }
104 
+              ]
105 
+            }
106 
+          }
107 
+
108 
+      # Other settings
63 109
64 110 
       `lifetime_in_seconds` is the number of seconds a HIT is left on Amazon before it's automatically closed.  The default is 1 day.
65 111 
 
@@ -70,6 +116,12 @@ module Agents
70 116 
       Events look like:
71 117
72 118 
           {
119 
+            "answers": [
120 
+              {
121 
+                "feedback": "Hello!",
122 
+                "sentiment": "happy"
123 
+              }
124 
+            ]
73 125 
           }
74 126 
     MD
75 127 
 
@@ -97,9 +149,13 @@ module Agents
97 149 
         errors.add(:base, "all questions of type 'selection' must have a selections array with selections that set 'key' and 'name'")
98 150 
       end
99 151
100 
-      if options[:take_majority] == "true" && options[:hit][:questions].any? { |question| question[:type] != "selection" }
152 
+      if take_majority? && options[:hit][:questions].any? { |question| question[:type] != "selection" }
101 153 
         errors.add(:base, "all questions must be of type 'selection' to use the 'take_majority' option")
102 154 
       end
155 
+
156 
+      if create_poll?
157 
+        errors.add(:base, "poll_options is required when combination_mode is set to 'poll' and must have the keys 'title', 'instructions', 'row_template', and 'assignments'") unless options[:poll_options].is_a?(Hash) && options[:poll_options][:title].present? &&  options[:poll_options][:instructions].present? && options[:poll_options][:row_template].present? && options[:poll_options][:assignments].to_i > 0
158 
+      end
103 159 
     end
104 160
105 161 
     def default_options
 
@@ -152,69 +208,152 @@ module Agents
152 208
153 209 
       if options[:trigger_on] == "schedule" && (memory[:last_schedule] || 0) <= Time.now.to_i - options[:submission_period].to_i * 60 * 60
154 210 
         memory[:last_schedule] = Time.now.to_i
155 
-        create_hit
211 
+        create_basic_hit
156 212 
       end
157 213 
     end
158 214
159 215 
     def receive(incoming_events)
160 216 
       if options[:trigger_on] == "event"
161 217 
         incoming_events.each do |event|
162 
-          create_hit event
218 
+          create_basic_hit event
163 219 
         end
164 220 
       end
165 221 
     end
166 222
167 223 
     protected
168 224
225 
+    def take_majority?
226 
+      options[:combination_mode] == "take_majority" || options[:take_majority] == "true"
227 
+    end
228 
+
229 
+    def create_poll?
230 
+      options[:combination_mode] == "poll"
231 
+    end
232 
+
233 
+    def event_for_hit(hit_id)
234 
+      if memory[:hits][hit_id.to_sym].is_a?(Hash)
235 
+        Event.find_by_id(memory[:hits][hit_id.to_sym][:event_id])
236 
+      else
237 
+        nil
238 
+      end
239 
+    end
240 
+
241 
+    def hit_type(hit_id)
242 
+      # Fix this: the Ruby process will slowly run out of RAM by symbolizing these unique keys.
243 
+      if memory[:hits][hit_id.to_sym].is_a?(Hash) && memory[:hits][hit_id.to_sym][:type]
244 
+        memory[:hits][hit_id.to_sym][:type].to_sym
245 
+      else
246 
+        :user
247 
+      end
248 
+    end
249 
+
169 250 
     def review_hits
170 251 
       reviewable_hit_ids = RTurk::GetReviewableHITs.create.hit_ids
171 252 
       my_reviewed_hit_ids = reviewable_hit_ids & (memory[:hits] || {}).keys.map(&:to_s)
172 253 
       if reviewable_hit_ids.length > 0
173 254 
         log "MTurk reports #{reviewable_hit_ids.length} HITs, of which I own [#{my_reviewed_hit_ids.to_sentence}]"
174 255 
       end
256 
+
175 257 
       my_reviewed_hit_ids.each do |hit_id|
176 258 
         hit = RTurk::Hit.new(hit_id)
177 259 
         assignments = hit.assignments
178 260
179 261 
         log "Looking at HIT #{hit_id}.  I found #{assignments.length} assignments#{" with the statuses: #{assignments.map(&:status).to_sentence}" if assignments.length > 0}"
180 262 
         if assignments.length == hit.max_assignments && assignments.all? { |assignment| assignment.status == "Submitted" }
181 
-          payload = { :answers => assignments.map(&:answers) }
182 
-
183 
-          if options[:take_majority] == "true"
184 
-            counts = {}
185 
-            options[:hit][:questions].each do |question|
186 
-              question_counts = question[:selections].inject({}) { |memo, selection| memo[selection[:key]] = 0; memo }
187 
-              assignments.each do |assignment|
188 
-                answers = ActiveSupport::HashWithIndifferentAccess.new(assignment.answers)
189 
-                answer = answers[question[:key]]
190 
-                question_counts[answer] += 1
263 
+          inbound_event = event_for_hit(hit_id)
264 
+
265 
+          if hit_type(hit_id) == :poll
266 
+            # handle completed polls
267 
+
268 
+            log "Handling a poll: #{hit_id}"
269 
+
270 
+            scores = {}
271 
+            assignments.each do |assignment|
272 
+              assignment.answers.each do |index, rating|
273 
+                scores[index] ||= 0
274 
+                scores[index] += rating.to_i
191 275 
               end
192 
-              counts[question[:key]] = question_counts
193 276 
             end
194 
-            payload[:counts] = counts
195 277
196 
-            majority_answer = counts.inject({}) do |memo, (key, question_counts)|
197 
-              memo[key] = question_counts.to_a.sort {|a, b| a.last <=> b.last }.last.first
198 
-              memo
199 
-            end
200 
-            payload[:majority_answer] = majority_answer
201 
-
202 
-            if all_questions_are_numeric?
203 
-              average_answer = counts.inject({}) do |memo, (key, question_counts)|
204 
-                sum = divisor = 0
205 
-                question_counts.to_a.each do |num, count|
206 
-                  sum += num.to_s.to_f * count
207 
-                  divisor += count
278 
+            top_answer = scores.to_a.sort {|b, a| a.last <=> b.last }.first.first
279 
+
280 
+            payload = {
281 
+              :answers => memory[:hits][hit_id.to_sym][:answers],
282 
+              :poll => assignments.map(&:answers),
283 
+              :best_answer => memory[:hits][hit_id.to_sym][:answers][top_answer.to_i - 1]
284 
+            }
285 
+
286 
+            event = create_event :payload => payload
287 
+            log "Event emitted with answer(s) for poll", :outbound_event => event, :inbound_event => inbound_event
288 
+          else
289 
+            # handle normal completed HITs
290 
+            payload = { :answers => assignments.map(&:answers) }
291 
+
292 
+            if take_majority?
293 
+              counts = {}
294 
+              options[:hit][:questions].each do |question|
295 
+                question_counts = question[:selections].inject({}) { |memo, selection| memo[selection[:key]] = 0; memo }
296 
+                assignments.each do |assignment|
297 
+                  answers = ActiveSupport::HashWithIndifferentAccess.new(assignment.answers)
298 
+                  answer = answers[question[:key]]
299 
+                  question_counts[answer] += 1
208 300 
                 end
209 
-                memo[key] = sum / divisor.to_f
301 
+                counts[question[:key]] = question_counts
302 
+              end
303 
+              payload[:counts] = counts
304 
+
305 
+              majority_answer = counts.inject({}) do |memo, (key, question_counts)|
306 
+                memo[key] = question_counts.to_a.sort {|a, b| a.last <=> b.last }.last.first
210 307 
                 memo
211 308 
               end
212 
-              payload[:average_answer] = average_answer
309 
+              payload[:majority_answer] = majority_answer
310 
+
311 
+              if all_questions_are_numeric?
312 
+                average_answer = counts.inject({}) do |memo, (key, question_counts)|
313 
+                  sum = divisor = 0
314 
+                  question_counts.to_a.each do |num, count|
315 
+                    sum += num.to_s.to_f * count
316 
+                    divisor += count
317 
+                  end
318 
+                  memo[key] = sum / divisor.to_f
319 
+                  memo
320 
+                end
321 
+                payload[:average_answer] = average_answer
322 
+              end
213 323 
             end
214 
-          end
215 324
216 
-          event = create_event :payload => payload
217 
-          log "Event emitted with answer(s)", :outbound_event => event, :inbound_event => Event.find_by_id(memory[:hits][hit_id.to_sym])
325 
+            if create_poll?
326 
+              questions = []
327 
+              selections = 5.times.map { |i| { :key => i+1, :text => i+1 } }.reverse
328 
+              assignments.length.times do |index|
329 
+                questions << {
330 
+                  :type => "selection",
331 
+                  :name => "Item #{index + 1}",
332 
+                  :key => index,
333 
+                  :required => "true",
334 
+                  :question => Utils.interpolate_jsonpaths(options[:poll_options][:row_template], assignments[index].answers),
335 
+                  :selections => selections
336 
+                }
337 
+              end
338 
+
339 
+              poll_hit = create_hit :title => options[:poll_options][:title],
340 
+                                    :description => options[:poll_options][:instructions],
341 
+                                    :questions => questions,
342 
+                                    :assignments => options[:poll_options][:assignments],
343 
+                                    :lifetime_in_seconds => options[:poll_options][:lifetime_in_seconds],
344 
+                                    :reward => options[:poll_options][:reward],
345 
+                                    :payload => inbound_event && inbound_event.payload,
346 
+                                    :metadata => { :type => :poll,
347 
+                                                   :original_hit => hit_id,
348 
+                                                   :answers => assignments.map(&:answers),
349 
+                                                   :event_id => inbound_event && inbound_event.id }
350 
+
351 
+              log "Poll HIT created with ID #{poll_hit.id} and URL #{poll_hit.url}.  Original HIT: #{hit_id}", :inbound_event => inbound_event
352 
+            else
353 
+              event = create_event :payload => payload
354 
+              log "Event emitted with answer(s)", :outbound_event => event, :inbound_event => inbound_event
355 
+            end
356 
+          end
218 357
219 358 
           assignments.each(&:approve!)
220 359 
           hit.dispose!
 
@@ -232,22 +371,35 @@ module Agents
232 371 
       end
233 372 
     end
234 373
235 
-    def create_hit(event = nil)
236 
-      payload = event ? event.payload : {}
237 
-      title = Utils.interpolate_jsonpaths(options[:hit][:title], payload).strip
238 
-      description = Utils.interpolate_jsonpaths(options[:hit][:description], payload).strip
239 
-      questions = Utils.recursively_interpolate_jsonpaths(options[:hit][:questions], payload)
374 
+    def create_basic_hit(event = nil)
375 
+      hit = create_hit :title => options[:hit][:title],
376 
+                       :description => options[:hit][:description],
377 
+                       :questions => options[:hit][:questions],
378 
+                       :assignments => options[:hit][:assignments],
379 
+                       :lifetime_in_seconds => options[:hit][:lifetime_in_seconds],
380 
+                       :reward => options[:hit][:reward],
381 
+                       :payload => event && event.payload,
382 
+                       :metadata => { :event_id => event && event.id }
383 
+
384 
+      log "HIT created with ID #{hit.id} and URL #{hit.url}", :inbound_event => event
385 
+    end
386 
+
387 
+    def create_hit(opts = {})
388 
+      payload = opts[:payload] || {}
389 
+      title = Utils.interpolate_jsonpaths(opts[:title], payload).strip
390 
+      description = Utils.interpolate_jsonpaths(opts[:description], payload).strip
391 
+      questions = Utils.recursively_interpolate_jsonpaths(opts[:questions], payload)
240 392 
       hit = RTurk::Hit.create(:title => title) do |hit|
241 
-        hit.max_assignments = (options[:hit][:assignments] || 1).to_i
393 
+        hit.max_assignments = (opts[:assignments] || 1).to_i
242 394 
         hit.description = description
243 
-        hit.lifetime = (options[:hit][:lifetime_in_seconds] || 24 * 60 * 60).to_i
395 
+        hit.lifetime = (opts[:lifetime_in_seconds] || 24 * 60 * 60).to_i
244 396 
         hit.question_form AgentQuestionForm.new(:title => title, :description => description, :questions => questions)
245 
-        hit.reward = (options[:hit][:reward] || 0.05).to_f
397 
+        hit.reward = (opts[:reward] || 0.05).to_f
246 398 
         #hit.qualifications.add :approval_rate, { :gt => 80 }
247 399 
       end
248 400 
       memory[:hits] ||= {}
249 
-      memory[:hits][hit.id] = event && event.id
250 
-      log "HIT created with ID #{hit.id} and URL #{hit.url}", :inbound_event => event
401 
+      memory[:hits][hit.id] = opts[:metadata] || {}
402 
+      hit
251 403 
     end
252 404
253 405 
     # RTurk Question Form

+ 171 - 18
spec/models/agents/human_task_agent_spec.rb
查看文件 

@@ -108,7 +108,43 @@ describe Agents::HumanTaskAgent do
108 108 
       @checker.should_not be_valid
109 109 
     end
110 110
111 
-    it "requires that all questions be of type 'selection' when `take_majority` is `true`" do
111 
+    it "requires that 'poll_options' be present and populated when 'combination_mode' is set to 'poll'" do
112 
+      @checker.options[:combination_mode] = "poll"
113 
+      @checker.should_not be_valid
114 
+      @checker.options[:poll_options] = {}
115 
+      @checker.should_not be_valid
116 
+      @checker.options[:poll_options] = { :title => "Take a poll about jokes",
117 
+                                          :instructions => "Rank these by how funny they are",
118 
+                                          :assignments => 3,
119 
+                                          :row_template => "<$.joke>" }
120 
+      @checker.should be_valid
121 
+      @checker.options[:poll_options] = { :instructions => "Rank these by how funny they are",
122 
+                                          :assignments => 3,
123 
+                                          :row_template => "<$.joke>" }
124 
+      @checker.should_not be_valid
125 
+      @checker.options[:poll_options] = { :title => "Take a poll about jokes",
126 
+                                          :assignments => 3,
127 
+                                          :row_template => "<$.joke>" }
128 
+      @checker.should_not be_valid
129 
+      @checker.options[:poll_options] = { :title => "Take a poll about jokes",
130 
+                                          :instructions => "Rank these by how funny they are",
131 
+                                          :row_template => "<$.joke>" }
132 
+      @checker.should_not be_valid
133 
+      @checker.options[:poll_options] = { :title => "Take a poll about jokes",
134 
+                                          :instructions => "Rank these by how funny they are",
135 
+                                          :assignments => 3}
136 
+      @checker.should_not be_valid
137 
+    end
138 
+
139 
+    it "requires that all questions be of type 'selection' when 'combination_mode' is 'take_majority'" do
140 
+      @checker.options[:combination_mode] = "take_majority"
141 
+      @checker.should_not be_valid
142 
+      @checker.options[:hit][:questions][1][:type] = "selection"
143 
+      @checker.options[:hit][:questions][1][:selections] = @checker.options[:hit][:questions][0][:selections]
144 
+      @checker.should be_valid
145 
+    end
146 
+
147 
+    it "accepts 'take_majority': 'true' for legacy support" do
112 148 
       @checker.options[:take_majority] = "true"
113 149 
       @checker.should_not be_valid
114 150 
       @checker.options[:hit][:questions][1][:type] = "selection"
 
@@ -126,7 +162,7 @@ describe Agents::HumanTaskAgent do
126 162
127 163 
     it "should check for reviewable HITs frequently" do
128 164 
       mock(@checker).review_hits.twice
129 
-      mock(@checker).create_hit.once
165 
+      mock(@checker).create_basic_hit.once
130 166 
       @checker.check
131 167 
       @checker.check
132 168 
     end
 
@@ -135,7 +171,7 @@ describe Agents::HumanTaskAgent do
135 171 
       now = Time.now
136 172 
       stub(Time).now { now }
137 173 
       mock(@checker).review_hits.times(3)
138 
-      mock(@checker).create_hit.twice
174 
+      mock(@checker).create_basic_hit.twice
139 175 
       @checker.check
140 176 
       now += 1 * 60 * 60
141 177 
       @checker.check
 
@@ -144,7 +180,7 @@ describe Agents::HumanTaskAgent do
144 180 
     end
145 181
146 182 
     it "should ignore events" do
147 
-      mock(@checker).create_hit(anything).times(0)
183 
+      mock(@checker).create_basic_hit(anything).times(0)
148 184 
       @checker.receive([events(:bob_website_agent_event)])
149 185 
     end
150 186 
   end
 
@@ -155,7 +191,7 @@ describe Agents::HumanTaskAgent do
155 191 
       now = Time.now
156 192 
       stub(Time).now { now }
157 193 
       mock(@checker).review_hits.times(3)
158 
-      mock(@checker).create_hit.times(0)
194 
+      mock(@checker).create_basic_hit.times(0)
159 195 
       @checker.check
160 196 
       now += 1 * 60 * 60
161 197 
       @checker.check
 
@@ -164,7 +200,7 @@ describe Agents::HumanTaskAgent do
164 200 
     end
165 201
166 202 
     it "should create HITs based on events" do
167 
-      mock(@checker).create_hit(events(:bob_website_agent_event)).times(1)
203 
+      mock(@checker).create_basic_hit(events(:bob_website_agent_event)).times(1)
168 204 
       @checker.receive([events(:bob_website_agent_event)])
169 205 
     end
170 206 
   end
 
@@ -181,7 +217,7 @@ describe Agents::HumanTaskAgent do
181 217 
       mock(hitInterface).question_form(instance_of Agents::HumanTaskAgent::AgentQuestionForm) { |agent_question_form_instance| question_form = agent_question_form_instance }
182 218 
       mock(RTurk::Hit).create(:title => "Hi Joe").yields(hitInterface) { hitInterface }
183 219
184 
-      @checker.send :create_hit, @event
220 
+      @checker.send :create_basic_hit, @event
185 221
186 222 
       hitInterface.max_assignments.should == @checker.options[:hit][:assignments]
187 223 
       hitInterface.reward.should == @checker.options[:hit][:reward]
 
@@ -192,7 +228,7 @@ describe Agents::HumanTaskAgent do
192 228 
       xml.should include("<Text>Make something for Joe</Text>")
193 229 
       xml.should include("<DisplayName>Joe Question 1</DisplayName>")
194 230
195 
-      @checker.memory[:hits][123].should == @event.id
231 
+      @checker.memory[:hits][123][:event_id].should == @event.id
196 232 
     end
197 233
198 234 
     it "works without an event too" do
 
@@ -201,7 +237,7 @@ describe Agents::HumanTaskAgent do
201 237 
       hitInterface.id = 123
202 238 
       mock(hitInterface).question_form(instance_of Agents::HumanTaskAgent::AgentQuestionForm)
203 239 
       mock(RTurk::Hit).create(:title => "Hi").yields(hitInterface) { hitInterface }
204 
-      @checker.send :create_hit
240 
+      @checker.send :create_basic_hit
205 241 
       hitInterface.max_assignments.should == @checker.options[:hit][:assignments]
206 242 
       hitInterface.reward.should == @checker.options[:hit][:reward]
207 243 
     end
 
@@ -259,8 +295,8 @@ describe Agents::HumanTaskAgent do
259 295
260 296 
       # It knows about two HITs from two different events.
261 297 
       @checker.memory[:hits] = {}
262 
-      @checker.memory[:hits][:"JH3132836336DHG"] = @event.id
263 
-      @checker.memory[:hits][:"JH39AA63836DHG"] = event2.id
298 
+      @checker.memory[:hits][:"JH3132836336DHG"] = { :event_id => @event.id }
299 
+      @checker.memory[:hits][:"JH39AA63836DHG"] = { :event_id => event2.id }
264 300
265 301 
       hit_ids = %w[JH3132836336DHG JH39AA63836DHG JH39AA63836DH12345]
266 302 
       mock(RTurk::GetReviewableHITs).create { mock!.hit_ids { hit_ids } } # It sees 3 HITs.
 
@@ -273,7 +309,7 @@ describe Agents::HumanTaskAgent do
273 309 
     end
274 310
275 311 
     it "shouldn't do anything if an assignment isn't ready" do
276 
-      @checker.memory[:hits] = { :"JH3132836336DHG" => @event.id }
312 
+      @checker.memory[:hits] = { :"JH3132836336DHG" => { :event_id => @event.id } }
277 313 
       mock(RTurk::GetReviewableHITs).create { mock!.hit_ids { %w[JH3132836336DHG JH39AA63836DHG JH39AA63836DH12345] } }
278 314 
       assignments = [
279 315 
         FakeAssignment.new(:status => "Accepted", :answers => {}),
 
@@ -288,11 +324,11 @@ describe Agents::HumanTaskAgent do
288 324 
       @checker.send :review_hits
289 325
290 326 
       assignments.all? {|a| a.approved == true }.should be_false
291 
-      @checker.memory[:hits].should == { :"JH3132836336DHG" => @event.id }
327 
+      @checker.memory[:hits].should == { :"JH3132836336DHG" => { :event_id => @event.id } }
292 328 
     end
293 329
294 330 
     it "shouldn't do anything if an assignment is missing" do
295 
-      @checker.memory[:hits] = { :"JH3132836336DHG" => @event.id }
331 
+      @checker.memory[:hits] = { :"JH3132836336DHG" => { :event_id => @event.id } }
296 332 
       mock(RTurk::GetReviewableHITs).create { mock!.hit_ids { %w[JH3132836336DHG JH39AA63836DHG JH39AA63836DH12345] } }
297 333 
       assignments = [
298 334 
         FakeAssignment.new(:status => "Submitted", :answers => {"sentiment"=>"happy", "feedback"=>"Take 2"})
 
@@ -306,11 +342,11 @@ describe Agents::HumanTaskAgent do
306 342 
       @checker.send :review_hits
307 343
308 344 
       assignments.all? {|a| a.approved == true }.should be_false
309 
-      @checker.memory[:hits].should == { :"JH3132836336DHG" => @event.id }
345 
+      @checker.memory[:hits].should == { :"JH3132836336DHG" => { :event_id => @event.id } }
310 346 
     end
311 347
312 348 
     it "should create events when all assignments are ready" do
313 
-      @checker.memory[:hits] = { :"JH3132836336DHG" => @event.id }
349 
+      @checker.memory[:hits] = { :"JH3132836336DHG" => { :event_id => @event.id } }
314 350 
       mock(RTurk::GetReviewableHITs).create { mock!.hit_ids { %w[JH3132836336DHG JH39AA63836DHG JH39AA63836DH12345] } }
315 351 
       assignments = [
316 352 
         FakeAssignment.new(:status => "Submitted", :answers => {"sentiment"=>"neutral", "feedback"=>""}),
 
@@ -337,8 +373,8 @@ describe Agents::HumanTaskAgent do
337 373
338 374 
     describe "taking majority votes" do
339 375 
       before do
340 
-        @checker.options[:take_majority] = "true"
341 
-        @checker.memory[:hits] = { :"JH3132836336DHG" => @event.id }
376 
+        @checker.options[:combination_mode] = "take_majority"
377 
+        @checker.memory[:hits] = { :"JH3132836336DHG" => { :event_id => @event.id } }
342 378 
         mock(RTurk::GetReviewableHITs).create { mock!.hit_ids { %w[JH3132836336DHG JH39AA63836DHG JH39AA63836DH12345] } }
343 379 
       end
344 380 
 
@@ -386,6 +422,10 @@ describe Agents::HumanTaskAgent do
386 422 
       end
387 423
388 424 
       it "should also provide an average answer when all questions are numeric" do
425 
+        # it should accept 'take_majority': 'true' as well for legacy support.  Demonstrating that here.
426 
+        @checker.options.delete :combination_mode
427 
+        @checker.options[:take_majority] = "true"
428 
+
389 429 
         @checker.options[:hit][:questions] = [
390 430 
           {
391 431 
             :type => "selection",
 
@@ -435,5 +475,118 @@ describe Agents::HumanTaskAgent do
435 475 
         @checker.memory[:hits].should == {}
436 476 
       end
437 477 
     end
478 
+
479 
+    describe "creating and reviewing polls" do
480 
+      before do
481 
+        @checker.options[:combination_mode] = "poll"
482 
+        @checker.options[:poll_options] = {
483 
+          :title => "Hi!",
484 
+          :instructions => "hello!",
485 
+          :assignments => 2,
486 
+          :row_template => "This is <.sentiment>"
487 
+        }
488 
+        @event.save!
489 
+        mock(RTurk::GetReviewableHITs).create { mock!.hit_ids { %w[JH3132836336DHG JH39AA63836DHG JH39AA63836DH12345] } }
490 
+      end
491 
+
492 
+      it "creates a poll using the row_template, message, and correct number of assignments" do
493 
+        @checker.memory[:hits] = { :"JH3132836336DHG" => { :event_id => @event.id } }
494 
+
495 
+        # Mock out the HIT's submitted assignments.
496 
+        assignments = [
497 
+          FakeAssignment.new(:status => "Submitted", :answers => {"sentiment"=>"sad",     "feedback"=>"This is my feedback 1"}),
498 
+          FakeAssignment.new(:status => "Submitted", :answers => {"sentiment"=>"neutral", "feedback"=>"This is my feedback 2"}),
499 
+          FakeAssignment.new(:status => "Submitted", :answers => {"sentiment"=>"happy",   "feedback"=>"This is my feedback 3"}),
500 
+          FakeAssignment.new(:status => "Submitted", :answers => {"sentiment"=>"happy",   "feedback"=>"This is my feedback 4"})
501 
+        ]
502 
+        hit = FakeHit.new(:max_assignments => 4, :assignments => assignments)
503 
+        mock(RTurk::Hit).new("JH3132836336DHG") { hit }
504 
+
505 
+        @checker.memory[:hits][:"JH3132836336DHG"].should be_present
506 
+
507 
+        # Setup mocks for HIT creation
508 
+
509 
+        question_form = nil
510 
+        hitInterface = OpenStruct.new
511 
+        hitInterface.id = "JH39AA63836DH12345"
512 
+        mock(hitInterface).question_form(instance_of Agents::HumanTaskAgent::AgentQuestionForm) { |agent_question_form_instance| question_form = agent_question_form_instance }
513 
+        mock(RTurk::Hit).create(:title => "Hi!").yields(hitInterface) { hitInterface }
514 
+
515 
+        # And finally, the test.
516 
+
517 
+        lambda {
518 
+          @checker.send :review_hits
519 
+        }.should change { Event.count }.by(0) # it does not emit an event until all poll results are in
520 
+
521 
+        # it approves the existing assignments
522 
+
523 
+        assignments.all? {|a| a.approved == true }.should be_true
524 
+        hit.should be_disposed
525 
+
526 
+        # it creates a new HIT for the poll
527 
+
528 
+        hitInterface.max_assignments.should == @checker.options[:poll_options][:assignments]
529 
+        hitInterface.description.should == @checker.options[:poll_options][:instructions]
530 
+
531 
+        xml = question_form.to_xml
532 
+        xml.should include("<Text>This is happy</Text>")
533 
+        xml.should include("<Text>This is neutral</Text>")
534 
+        xml.should include("<Text>This is sad</Text>")
535 
+
536 
+        @checker.save
537 
+        @checker.reload
538 
+        @checker.memory[:hits][:"JH3132836336DHG"].should_not be_present
539 
+        @checker.memory[:hits][:"JH39AA63836DH12345"].should be_present
540 
+        @checker.memory[:hits][:"JH39AA63836DH12345"][:event_id].should == @event.id
541 
+        @checker.memory[:hits][:"JH39AA63836DH12345"][:type].should == :poll
542 
+        @checker.memory[:hits][:"JH39AA63836DH12345"][:original_hit].should == "JH3132836336DHG"
543 
+        @checker.memory[:hits][:"JH39AA63836DH12345"][:answers].length.should == 4
544 
+      end
545 
+
546 
+      it "emits an event when all poll results are in, containing the data from the best answer, plus all others" do
547 
+        original_answers = [
548 
+          {:sentiment => "sad",     :feedback => "This is my feedback 1"},
549 
+          {:sentiment => "neutral", :feedback => "This is my feedback 2"},
550 
+          {:sentiment => "happy",   :feedback => "This is my feedback 3"},
551 
+          {:sentiment => "happy",   :feedback => "This is my feedback 4"}
552 
+        ]
553 
+
554 
+        @checker.memory[:hits] = {
555 
+          :JH39AA63836DH12345 => {
556 
+            :type => :poll,
557 
+            :original_hit => "JH3132836336DHG",
558 
+            :answers => original_answers,
559 
+            :event_id => 345
560 
+          }
561 
+        }
562 
+
563 
+        # Mock out the HIT's submitted assignments.
564 
+        assignments = [
565 
+          FakeAssignment.new(:status => "Submitted", :answers => {"1" => "2", "2" => "5", "3" => "3", "4" => "2"}),
566 
+          FakeAssignment.new(:status => "Submitted", :answers => {"1" => "3", "2" => "4", "3" => "1", "4" => "4"})
567 
+        ]
568 
+        hit = FakeHit.new(:max_assignments => 2, :assignments => assignments)
569 
+        mock(RTurk::Hit).new("JH39AA63836DH12345") { hit }
570 
+
571 
+        @checker.memory[:hits][:"JH39AA63836DH12345"].should be_present
572 
+
573 
+        lambda {
574 
+          @checker.send :review_hits
575 
+        }.should change { Event.count }.by(1)
576 
+
577 
+        # It emits an event
578 
+
579 
+        @checker.events.last.payload[:answers].should == original_answers
580 
+        @checker.events.last.payload[:poll].should == [{:"1" => "2", :"2" => "5", :"3" => "3", :"4" => "2"}, {:"1" => "3", :"2" => "4", :"3" => "1", :"4" => "4"}]
581 
+        @checker.events.last.payload[:best_answer].should == {:sentiment => "neutral", :feedback => "This is my feedback 2"}
582 
+
583 
+        # it approves the existing assignments
584 
+
585 
+        assignments.all? {|a| a.approved == true }.should be_true
586 
+        hit.should be_disposed
587 
+
588 
+        @checker.memory[:hits].should be_empty
589 
+      end
590 
+    end
438 591 
   end
439 592 
 end