ctak/include/xorshift64.c, branch hybrid_rootstrapAn implementation of Tak and a computer opponent in Chttps://git.l-3.space/ctak/atom/include/xorshift64.c?h=hybrid_rootstrap2026-09-02T11:13:01ZTD(lambda), and a big rework2026-09-02T11:13:01Ztsliltslil@posteo.de2026-08-30T18:46:07Zurn:sha1:241156da6f35cb888253e6b8814e7b61a76b4fc7
NOTE: 6x6 weights are as-yet untrained
On the performance side:
* switch from linked-list chaining hash table to direct mapping
* cache check_win by hash
* persist transposition tables across plies (this was a big deal and difficult to puzzle out)
* add align directives to the network floats
* prepare_nn_input gained a small LUT to avoid branching (i suppose you might call this 1D embedding)
* apply mtune=native for the native builds
On the correctness side:
* Zobrist has now includes the ply parity
* the network now predicts something in [-1, 1] using tanh (approximated by polynomials)
* the training object is now MSE because we're learning a value estimate
* use .clangd instead of compile_commands.json
On the training side:
* completely forgo human-derived data set
* implement td(lambda), self-play, tournaments
Welcome geminict!2021-10-05T22:23:32Ztslil clingmantslil@posteo.de2021-10-05T22:22:23Zurn:sha1:c9fa20b590de94a9ddb408e277065a117b16570b
This is a special interface to negamax_cnn1986 which is designed to
generate output for use in a CGI tak interface to be used over gemini.
Also in this commit is a reformating of the various source files to
use the traditional tab width of 8 spaces.
Fix copyright notice in files, and small preemptive optimisation2021-03-28T04:19:05Ztslil clingmantslil@posteo.de2021-03-28T04:19:05Zurn:sha1:b8a88e53aa2a933d39777ba435a6cad9f5c42428
Eventually there'll be a more complicated data generation step than
the one we're presently using, so having it in-lined in the loop is
wasteful. Ideally also this would be update per ply and we could avoid
recalculating it entirely for every query -- though it's probably
``fast enough'' for now. Also, caching is WIP.
Rename ct_k -> ct, IANAL but ...2021-02-05T21:49:14Ztsliltslil@posteo.de2021-02-05T21:49:14Zurn:sha1:5c8e082276a24b9f266396874d3e72c05990a3dfAdded license information!2021-01-29T02:30:30Ztslil clingmantslil@posteo.de2021-01-29T02:30:30Zurn:sha1:e8fd4e0fd0056c3f91d9b773f5e727614b0c2638Hash collisions2021-01-24T01:48:34Ztslil clingmantslil@posteo.de2021-01-24T01:48:34Zurn:sha1:d16cdbd9b8a9a8b364c59858f94b695266b62f4dAttempting Zobrist hashing2021-01-23T23:20:05Ztslil clingmantslil@posteo.de2021-01-23T23:20:05Zurn:sha1:50678edd7ed39049902bedeb57c8044c7375e126