コード例 #1
0
ファイル: event_server.py プロジェクト: daifanxiang/CityBeat
 def getEventByID(self, event_id):
     event = self.ei.getEventByID(event_id)
     event = Event(event)
     event.selectOnePhotoForOneUser()
     event_dic = event.toJSON()
     event_dic['_id'] = str(event_dic['_id'])
     return json.dumps(event_dic)
コード例 #2
0
    def goThroughCandidateDB(self):
        """Go through candidate event db and classify whatever is left"""
        ei = EventInterface(self.candidate_db, self.candidate_collection)
        ei_classified = EventInterface(self.classified_event_db, self.classified_event_collection)
        cnt = 0
        # consider past 2 hours for merge
        low_bound = str(int(getCurrentStampUTC()) - 60 * 60 * 2)
        condition = {'created_time':{ '$gte':  low_bound}}
        for e in ei.getAllDocuments(condition=condition):
            logging.warning("Classifying %d-th candidate event..." % cnt)
            e = Event(e)
            cnt += 1
            region = Region(e.getRegion())
            corpus = self.all_corpus[region.getKey()]
            ef = BaseFeatureProduction(e, corpus)
            prob = self.clf.classify(ef.extractFeatures())

            if ei_classified.getEventByID(e.getID()) is not None:
                if prob > 0.5:
                    print 'already in front end collection, merge it'
                    ei_classified.addEvent(e)
                else:
                    print 'after merge it becomes none event, delete it'
                    ei_classified.deleteEventByID(e.getID())
            else:
                if prob > 0.5:
                    print 'new events find in collection but not in front end , add it'
                    ei_classified.addEvent(e)
コード例 #3
0
    def fireAlarm(self):
        prediction = self.getNearestPrediction()
        
        self._getFiftenMiniutesPhotos()
        if prediction is None:
            #print 'None data for this region: details as follow'
            #self.region.display()
            #print 'time:' ,self.cur_time
            return 
        else:
            print 'Data!'
        mu = float(prediction['mu'])/4.0
        std = float(prediction['std'])/4.0
        time_stamp = prediction['time']

        zscore = (self.current_value - mu)*1.0/std


        if zscore > 3:
            e = Event()
            e.setPredictedValues(mu, std)
            e.setZscore(zscore)
            e.setRegion(self.region)
            e.setCreatedTime(self.cur_time)
            e.setActualValue(self.current_value)

            for p in self.photos:
                e.addPhoto(p)
            #print 'current value ',4.0*self.current_value, ' predict = ',mu*4.0,' std = ',std*4.0
        
            ei = EventInterface( )
            ei.setCollection(self.candidate_collection)
            print e.getEarliestPhotoTime(),e.getLatestPhotoTime()
            #print e.toJSON()['region']
            #ei.addEvent(e)
            ei.addEventWithoutMerge(e)
コード例 #4
0
ファイル: run_baseline.py プロジェクト: daifanxiang/CityBeat
    def fireAlarm(self):
        self._getFiftenMiniutesPhotos() #get current_value
        cur_hour = datetime.utcfromtimestamp(float(self.cur_time)).hour
        #print 'cur_hour = ',cur_hour, 'time = ',self.cur_time 
        mu = self.means[cur_hour]/4.0
        std = self.stds[cur_hour]/4.0
        #print 'mu is ',mu, 'std is ',std, 'cur_value = ',self.current_value
        zscore = (self.current_value - mu)*1.0/std

        if zscore > 3 and self.current_value>=8:
            e = Event()
            e.setPredictedValues(mu, std)
            e.setZscore(zscore)
            e.setRegion(self.region)
            e.setCreatedTime(self.cur_time)
            e.setActualValue(self.current_value)

            for p in self.photos:
                e.addPhoto(p)
        
            ei = EventInterface( )
            ei.setCollection(self.candidate_collection)
            #print datetime.utcfromtimestamp(float(e.getEarliestPhotoTime())), datetime.utcfromtimestamp(float(e.getLatestPhotoTime()))
            #print e.getEarliestPhotoTime(),e.getLatestPhotoTime()
            #print e.toJSON()['region']
            ei.addEvent(e)