/** Orients according to background knowledge */
private void fciOrientbk(IKnowledge bk, Graph graph, List<Node> variables) {
logger.log("info", "Starting BK Orientation.");
for (Iterator<KnowledgeEdge> it = bk.forbiddenEdgesIterator(); it.hasNext(); ) {
KnowledgeEdge edge = it.next();
// match strings to variables in the graph.
Node from = SearchGraphUtils.translate(edge.getFrom(), variables);
Node to = SearchGraphUtils.translate(edge.getTo(), variables);
if (from == null || to == null) {
continue;
}
if (graph.getEdge(from, to) == null) {
continue;
}
// Orient to*->from
graph.setEndpoint(to, from, Endpoint.ARROW);
graph.setEndpoint(from, to, Endpoint.CIRCLE);
changeFlag = true;
logger.log(
"knowledgeOrientation",
SearchLogUtils.edgeOrientedMsg("Knowledge", graph.getEdge(from, to)));
}
for (Iterator<KnowledgeEdge> it = bk.requiredEdgesIterator(); it.hasNext(); ) {
KnowledgeEdge edge = it.next();
// match strings to variables in this graph
Node from = SearchGraphUtils.translate(edge.getFrom(), variables);
Node to = SearchGraphUtils.translate(edge.getTo(), variables);
if (from == null || to == null) {
continue;
}
if (graph.getEdge(from, to) == null) {
continue;
}
graph.setEndpoint(to, from, Endpoint.TAIL);
graph.setEndpoint(from, to, Endpoint.ARROW);
changeFlag = true;
logger.log(
"knowledgeOrientation",
SearchLogUtils.edgeOrientedMsg("Knowledge", graph.getEdge(from, to)));
}
logger.log("info", "Finishing BK Orientation.");
}
