private void findRandomEdgeTopic(out EdgeNavigationData edgeTopic, out string edgeHypothesis)
{
var rndIndex = _rnd.Next(_edges.Length);
var edge = _edges[rndIndex];
edgeTopic = _data.GetEdgeData(edge);
var hypotheses = edgeTopic.ExpressionVotes.ToArray();
var totalVoteCount = hypotheses.Select(t => Math.Abs(t.Item2)).Sum() + 1;
//TODO format edge to be readable
edgeHypothesis = formatFreebaseEdge(edgeTopic.Edge);
var repetitionCount = hypotheses.Length * 5;
for (var i = 0; i < repetitionCount; ++i)
{
var hypothesisSample = hypotheses[i % hypotheses.Length];
var threshold = 1.0 * Math.Max(1, hypothesisSample.Item2) / totalVoteCount;
if (_rnd.NextDouble() >= threshold)
{
continue;
}
edgeHypothesis = hypothesisSample.Item1;
}
}
private void setRandomTopic()
{
_currentEntityTopic = null;
_currentEdgeTopic = null;
_currentEdgeHypothesis = null;
_initialEdgeHypothesis = null;
//TODO select random state
_currentState = NavigationDialogState.ExpectsEdgeHint;
switch (_currentState)
{
case NavigationDialogState.ExpectsEntityLabelHint:
_currentEntityTopic = getRandomEntityTopic();
return;
case NavigationDialogState.ExpectsEdgeHint:
findRandomEdgeTopic(out _currentEdgeTopic, out _currentEdgeHypothesis);
_initialEdgeHypothesis = _currentEdgeHypothesis;
_currentEdgeRepresentant = getRandomEdgeRepresentant(_currentEdgeTopic.Edge);
return;
}
}
