March 7, 2017

Attacks on Digital Watermarks Classification, by Voloshynovskiy, Pereira, Pun, Eggers, Su

By Voloshynovskiy, Pereira, Pun, Eggers, Su

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The heuristic value of these moves is set as follows. – If the current search goal is boundary safe, then the best attacking or defending move is given the defender’s minimum block value. – If the search goal is territory safe, then the best attacking or defending move receives a value proportional to the number of interior points of the area. 3 Board Partitioning for Identifying Open Boundary Problems The Go program Explorer uses heuristic territory evaluation to partition the board into zones [6].

Set 1 contains a total of 120 test positions, including 60 original open boundary problems and 60 modified problems that are versions of the original problems with some external liberties added. Most original positions are taken from the classic Guan Zi Pu [9]. The remaining problems are collected from several resources, including [10] and positions created by the authors. Set 2 contains 20 positions from computer-computer games. 0 cannot handle open boundary problems, it cannot solve any positions from Set 1 and 2.

5. External liberties affect zone’s safety status – Step 1: After W: c3 it is Black’s turn. The first search is local within Black’s area and pessimistically assumes no external liberties. If the outcome is a win, the area is safe without using any external liberties. No further search is necessary. – If the outcome is seki or loss for Black, then a second search using the real external liberties is performed. In the left of Figure 5, the first search returns a loss. The second search establishes that with two external liberties the Black area is safe.

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