Godoggo
21
-
Upload
mskmoorthy -
Category
Education
-
view
278 -
download
1
Transcript of Godoggo
GO?
Friday, April 15, 2011
GOBJECT-DETECTOR
• Go board recognition library.
• Rewritten in C++ for Android NDK.
• Some issues with OpenCv on Android...
Friday, April 15, 2011
IMPROVED GRID DETECTION
• Board has dots to indicate “Hoshi” points (For example Tengen at 10,10)
• Adjust grid to fit better to Hoshi points.
Friday, April 15, 2011
MORE?
• Score boards. Requires a simple MonteCarlo AI or user interaction.
• Live broadcasting to KGS.
Friday, April 15, 2011
GIFU!
• iTunes for your Go game records.
• Fully queryable sqlite backed database.
• Tested with collection of 50,000 games.
Friday, April 15, 2011
TAGS AND COMMENTS
• With a collection of 50,000 games it can be difficult to remember what you are studying...or which game had a particular move.
• Would also be nice to comment game without disturbing the original file.
Friday, April 15, 2011
SGF PRINTER
• Would also be nice to print records in Kifu format.
Friday, April 15, 2011
GO AI
• Really hard :(
Friday, April 15, 2011
BOARD REPRESENTATION
• Keep track of blocks/liberties.
• Zobrist hashing
• Positional Super Ko
• Symmetry Checking.
Friday, April 15, 2011
AI ARCHITECTURE
• Multiple modules generate candidate moves.
• Moves are evaluated by Monte Carlo evaluator.
Friday, April 15, 2011
MONTE CARLO EVALUATOR
• Core of AI move evaluation.
• Randomly plays out thousands of games and calculates win percentage.
• Playouts can be “light” or “heavy”
Friday, April 15, 2011
PATTERN MATCHING
• Match subset of board against pattern.
• Recognize patterns independent of transposition, rotation, etc...
Friday, April 15, 2011
FUSEKI DATABASE
• Compiled from collection of pro and high dan amateur games.
• Typically relevant for first 50 moves.
Friday, April 15, 2011
JOSEKI DATABASE
• Patterns in local corner positions.
• Best moves found for both sides.
Friday, April 15, 2011
CONNECTIVITY
• Higher level concept than blocks.
• The red stones are “connected”
• Every shape has weaknesses.
Friday, April 15, 2011
PROVERBIAL KNOWLEDGE
• Black would like to play inbetween the white stones on top.
• Proverbial knowledg says to build thickness first....pattern database has a suggestion!
Friday, April 15, 2011
THE PEEP
Friday, April 15, 2011
STRATEGIC DECISIONS
• Proverbial knowledge database will enable guiding selection of moves for MonteCarlo based on moves generated by various strategy modules.
• In previous example, “invasion” module, would query the “thickness” module for setup plays.
• Such plays are given heavier play outs in MonteCarlo.
Friday, April 15, 2011
QUESTIONS?
Friday, April 15, 2011
