Moyoman

A territory can be formed by multiple SingleGroup
and SingleLooseGroup objects. This tends to be
true mostly in the cases where the player has a moyo.

Rather than classifying territory as undetermined,
determined, or potential, it is more useful to think
of it in terms of probability. Consider an even game
after 12 moves, where Black has taken 2 rows of
star points, and White has played two 3,4 - 5,3
shimaris facing each other with stones on the third
and fifth lines midway between them. This would
be considered to be a roughly even result for the
two sides, or else the difference is only apparent
to very strong players. In terms of secure territory,
White has about 73 points of territory, but Black has 0.
Black certainly does not have extra influence worth
73 points, so how can this be? Black can be considered
to have a set of 159 points which are potential
territory Each point has a probability of becoming
actual territory which is less than a point in Whites area.
Multiplying the set of points for each side by the
probability of each point becoming territory should result
in numbers which are roughly the same.

I will add a new method to the SingleTerritory interface:
float getConfidence(Point pt). This reflects the fact that
most territories are not absolutely set until the endgame,
and that the amount of territory is really just an estimate.