Ejemplo n.º 1
0
        //nbest MIRA
        public void taskRunner_nbestMIRA(object task)
        {
            int i = (int)task;

            foreach (dataSeq x in Global.threadX[i])
            {
                //find the output nbest path
                List <double>      logNumers   = new List <double>();
                List <List <int> > taggingList = new List <List <int> >();
                AStarSearch        aStar       = new AStarSearch();
                aStar.getNBest(_model, _inf, x, Global.nBest, ref taggingList, ref logNumers);

                //oracle Viterbi path
                List <int> goldStates = new List <int>(x.getTags());

                foreach (List <int> outStates in taggingList)
                {
                    int diff = listTool.compare(outStates, goldStates);
                    if (diff > 0)
                    {
                        updateWeights(x, outStates, goldStates, _model.W, _tmpW, Global.xsize, Global.k, diff);
                        Global.wUpdate++;
                    }
                }
                Global.k++;
                Global.countWithIter++;
            }
        }
Ejemplo n.º 2
0
        public void taskRunner(object task)
        {
            int i = (int)task;

            foreach (dataSeq x in Global.threadX[i])
            {
                //find the output nbest path
                List <List <int> > taggingList = new List <List <int> >();
                List <double>      logNumers   = new List <double>();
                AStarSearch        aStar       = new AStarSearch();
                Global.threadError[i] += aStar.getNBest(_model, _inf, x, Global.nBest, ref taggingList, ref logNumers);

                //oracle Viterbi path
                List <int> goldStates = new List <int>(x.getTags());

                Global.r_k = Global.rate0 * Math.Pow(Global.decayFactor, (double)Global.countWithIter / (double)Global.xsize);
                if (Global.countWithIter % (Global.xsize / 4) == 0)
                {
                    Global.swLog.WriteLine("iter{0}    decay_rate={1}", Global.glbIter, Global.r_k.ToString("e2"));
                }

                if (taggingList.Count == 1 && listTool.compare(taggingList[0], goldStates) == 0)
                {
                    Global.k++;
                    Global.countWithIter++;
                    continue;
                }
                else
                {
                    //update the weights
                    updateWeights(x, taggingList, logNumers, goldStates, _model.W, Global.xsize, Global.k);
                    Global.wUpdate++;

                    Global.k++;
                    Global.countWithIter++;
                }
            }
        }