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Optimize MathFunction

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This commit is contained in:
Joel Therrien 2018-09-10 17:16:43 -07:00
parent e0681763ef
commit 6e58122380
1 changed files with 17 additions and 8 deletions
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25
src/main/java/ca/joeltherrien/randomforest/utils/MathFunction.java
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@ -35,20 +35,29 @@ public class MathFunction implements Serializable {
} }
public Point evaluate(double time){ public Point evaluate(double time){
final Optional<Point> pointOptional = points.stream() Point point = defaultValue;
.filter(point -> point.getTime() <= time)
.max(Comparator.comparingDouble(Point::getTime));
return pointOptional.orElse(defaultValue); for(final Point currentPoint: points){
if(currentPoint.getTime() > time){
break;
}
point = currentPoint;
}
return point;
} }
public Point evaluatePrevious(double time){ public Point evaluatePrevious(double time){
final Optional<Point> pointOptional = points.stream() Point point = defaultValue;
.filter(point -> point.getTime() < time)
.max(Comparator.comparingDouble(Point::getTime));
return pointOptional.orElse(defaultValue); for(final Point currentPoint: points){
if(currentPoint.getTime() >= time){
break;
}
point = currentPoint;
}
return point;
} }
@Override @Override