upStreamItems =
upStreamItems +=
    public int initItemsReceived()     {	//the number of items produced by the upstream filter in	//initialization	int upStreamItems = 0;		if (traceNode.getPrevious().isFilterTrace()) {	    upStreamItems = 		FilterInfo.getFilterInfo((FilterTraceNode)traceNode.getPrevious()).initItemsSent();	}	else { //previous is an input trace	    InputTraceNode in = (InputTraceNode)traceNode.getPrevious();	    	    //add all the upstream filters items that reach this filter	    for (int i = 0; i < in.getWeights().length; i++) {		Edge incoming = in.getSources()[i];		upStreamItems =		    (int)(FilterInfo.getFilterInfo((FilterTraceNode)incoming.getSrc().getPrevious()).initItemsSent() *			  ((double)incoming.getSrc().getWeight(incoming) / incoming.getSrc().totalWeights()));		//upStreamItems += (int)(FilterInfo.getFilterInfo(previous[i]).initItemsSent() *		//   ((double)out.getWeight(in) / out.totalWeights()));	    }	}	return upStreamItems;    }