public void addUnaryExtensionsToLexProds() {
for (int i = 0; i < chart.size(); i++) {
final HashSetChartCell cell = chart.getCell(i, i + 1);
for (final int pos : cell.getPosNTs()) {
for (final Production unaryProd : grammar.getUnaryProductionsWithChild(pos)) {
// cell.addEdge(unaryProd, cell, null, cell.getBestEdge(pos).inside + unaryProd.prob);
cell.updateInside(unaryProd, cell.getInside(pos) + unaryProd.prob);
}
}
}
}
protected void addLexicalProductions(final int sent[]) {
// ChartEdge newEdge;
HashSetChartCell cell;
for (int i = 0; i < chart.size(); i++) {
cell = chart.getCell(i, i + 1);
for (final Production lexProd : grammar.getLexicalProductionsWithChild(sent[i])) {
// newEdge = chart.new ChartEdge(lexProd, chart.getCell(i, i + 1));
// chart.getCell(i, i + 1).addEdge(newEdge);
cell.updateInside(lexProd, lexProd.prob);
}
}
}
protected void addBestEdgesToChart(
final HashSetChartCell cell, final ChartEdge[] bestEdges, final int maxEdgesToAdd) {
ChartEdge edge, unaryEdge;
int numAdded = 0;
final PriorityQueue<ChartEdge> agenda = new PriorityQueue<ChartEdge>();
for (int i = 0; i < bestEdges.length; i++) {
if (bestEdges[i] != null) {
addEdgeToAgenda(bestEdges[i], agenda);
}
}
while (agenda.isEmpty() == false && numAdded <= maxEdgesToAdd) {
edge = agenda.poll();
// addedEdge = cell.addEdge(edge);
// if (addedEdge) {
final int nt = edge.prod.parent;
final float insideProb = edge.inside();
if (insideProb > cell.getInside(edge.prod.parent)) {
cell.updateInside(nt, insideProb);
// System.out.println(" addingEdge: " + edge);
numAdded++;
// Add unary productions to agenda so they can compete with binary productions
for (final Production p : grammar.getUnaryProductionsWithChild(edge.prod.parent)) {
unaryEdge = chart.new ChartEdge(p, cell);
addEdgeToAgenda(unaryEdge, agenda);
}
}
}
// TODO: should I decrease the maxEdgeFOM here according to the best edge NOT in the chart?
// won't this just be overrun when we expand the frontier?
if (agenda.isEmpty()) {
maxEdgeFOM[cell.start()][cell.end()] = Float.NEGATIVE_INFINITY;
} else {
maxEdgeFOM[cell.start()][cell.end()] = agenda.peek().fom;
}
}