public override HiddenModel createModel(IEnumerable <BaseTrajectory> traces, StrokeMap strokeMap)
{
var strokes = traces.ToArray();
var symbolTraces = strokes.Select(s => strokeMap.getSymbolTrace(s)).ToArray();
var transitionDatas = strokeMap.Areas.Select((a, i) => transitionSetup.createTransitionDataToArea(i, "S" + strokeMap.ID + "_A" + (i + 1))).ToArray();
foreach (var symTrace in symbolTraces)
{
var prevT = symTrace[0].Time;
for (int i = 1; i < symTrace.Length; i++)
{
var dT = (int)(symTrace[i].Time - prevT);
prevT = symTrace[i].Time;
transitionDatas[i - 1].addData(dT);
}
}
var startState = new StartState();
State curState = startState;
State nextState;
foreach (var transData in transitionDatas)
{
nextState = new State();
var transition = transData.createTransition(nextState);
curState.addTransition(transition);
curState = nextState;
}
var model = new HiddenModel(startState, curState);
return(model);
}
/// <summary>
/// determines whether the given trace fits the gesture representation
/// </summary>
/// <param name="trace"></param>
/// <returns>an arbitrary double value giving a measure for the similarity; 0 states that the given trace is no fitting example of the gesture </returns>
public double validateGestureTrace(BaseTrajectory trace)
{
var O = strokeMap.getSymbolTrace(trace);
if (O == null)
{
return(0);
}
//insert dummy symbol
//O = new Observation[] { new Observation("Dummy", O[0].Time) }.Concat(O).ToArray();
//also check time dynamics
var eval = model.evaluate(O, true);
//normalize
return(eval /*/ model.MaxEvaluation*/);
}
/// <summary>
/// determines whether the given trace fits the gesture representation
/// </summary>
/// <param name="trace"></param>
/// <returns>an arbitrary double value giving a measure for the similarity; 0 states that the given trace is no fitting example of the gesture </returns>
public double validateGestureTrace(BaseTrajectory trace)
{
var O = strokeMap.getSymbolTrace(trace);
foreach (var symbol_idx in O)
{
if (symbol_idx == null)
{
return(0);
}
}
O = O.Where(w => w.Symbol != "GestureStart").ToArray();
//return 1;
//insert dummy symbol
//O = new Observation[] { new Observation("Dummy", O[0].Time) }.Concat(O).ToArray();
//also check time dynamics
var eval = model.evaluate(O, true);
//normalize
return(eval /*/ model.MaxEvaluation*/);
}
public override CHnMModel createModel(IEnumerable <BaseTrajectory> traces, StrokeMap strokeMap)
{
var strokes = traces.ToArray();
var symbolTraces = strokes.Select(s => strokeMap.getSymbolTrace(s)).ToArray();
var transitionDatas = strokeMap.Areas.Select((a, i) => transitionSetup.createTransitionDataToArea(i, "S" + strokeMap.ID + "_A" + (i + 1))).ToArray();
foreach (var symTrace in symbolTraces)
{
if (symTrace != null)
{
var has_empty = symTrace.Where(w => w == null).ToArray();
if (has_empty.Length == 0)
{
var symTrace_clean = symTrace.Where(w => w.Symbol != "GestureStart").ToArray();
var prevT = symTrace[0].Time;
for (int i = 0; i < symTrace_clean.Length; i++)
{
var dT = (int)(symTrace_clean[i].Time - prevT);
prevT = symTrace_clean[i].Time;
transitionDatas[i].addData(dT);;
}
}
else
{
//handle the empty datas here
}
}
}
var startState = new StartState();
State curState = startState;
State nextState;
int ai = 0;
foreach (var transData in transitionDatas)
{
nextState = new State();
var transition = transData.createTransition(nextState, strokeMap.Areas[ai++]);
curState.addTransition(transition);
curState = nextState;
}
var model = new CHnMModel(startState, curState);
return(model);
}
public override CHnMModel createModel(IEnumerable <BaseTrajectory> traces, StrokeMap strokeMap)
{
var strokes = traces.ToArray();
var symbolTraces = strokes.Select(s => strokeMap.getSymbolTrace(s)).ToArray();
var transitionDatas = strokeMap.Areas.Select((a, i) => transitionSetup.createTransitionDataToArea("S" + strokeMap.ID + "_A" + (i + 1))).ToArray();
////number of areas -> transitiondata to endState
//var endTransitions = new Dictionary<int,TransitionData>(15);
var endTransitionData = transitionSetup.createTransitionDataToEnd();
foreach (var symTrace in symbolTraces)
{
var prevT = symTrace[0].Time; //GestureStart is dummy symbol marking the beginning
for (int i = 1; i < symTrace.Length; i++) //go through all symbols of a trace (except GestureEnd)
{
var dT = (int)(symTrace[i].Time - prevT);
prevT = symTrace[i].Time;
if (i == symTrace.Length - 1)
{
endTransitionData.addData(dT);
//TransitionData endTransition;
//if(endTransitions.TryGetValue(i, out endTransition))
//{
// endTransition.addData(dT);
//}
//else
//{
// Debug.Assert(symTrace[i].Symbol == "GestureEnd");
// endTransition = transitionSetup.createTransitionDataToEnd(); //use endtransition
// endTransition.addData(dT);
// endTransitions[i] = endTransition;
//}
}
else
{
transitionDatas[i - 1].addData(dT);
}
}
}
//var endTransPositions = endTransitions.Select(e => e.Key).OrderBy(x => x).ToArray();
//Debug.Assert(endTransPositions.Last() - endTransPositions.First() == endTransitions.Count-1);
var startState = new StartState();
var areaStates = new State[strokeMap.Areas.Length];
var endState = new State();
State curState = startState;
State nextState;
int curAreaState = 0;
foreach (var transData in transitionDatas)
{
nextState = new State();
areaStates[curAreaState++] = nextState;
var transition = transData.createTransition(nextState, null);
curState.addTransition(transition);
curState = nextState;
}
curState.addTransition(endTransitionData.createTransition(endState, null));
//add end transitions
//foreach(var end in endTransitions)
//{
// var prevAreaState = areaStates[end.Key - 2];
// prevAreaState.addTransition(end.Value.createTransition(endState));
//}
var model = new CHnMModel(startState, endState);
return(model);
}