Buckets:
agent-collaborations/hutter-prize-67 / decoder-bundle-minimization /work /paq8px-src /src /APMPost.hpp
| /** | |
| * APMPost maps a 12-bit probability (0-4095) to an n-bit probability (as defined by the Arithmetic Encoder) | |
| * After each guess it updates its state to improve future guesses. | |
| */ | |
| class APMPost : IPredictor { | |
| private: | |
| const Shared * const shared; | |
| uint32_t index; /**< last p, context */ | |
| const uint32_t n; /**< number of contexts */ | |
| Array<uint64_t> t; | |
| public: | |
| /** | |
| * Creates an instance with @ref n contexts. | |
| * @param n the number of contexts | |
| */ | |
| APMPost(const Shared* sh, uint32_t n); | |
| /** | |
| * Returns adjusted probability in context @ref cx (0 to n-1). | |
| * @param pr initial (pre-adjusted) probability | |
| * @param cxt the context | |
| * @return adjusted probability | |
| */ | |
| uint32_t p(uint32_t pr, uint32_t cxt); | |
| void update() override; | |
| void print() { | |
| for (int i = 0; i < 4096; i++) { | |
| printf("%d\t%d\t%d\n",i,(int)(t[i]>>32), (int)(t[i]&0xffffffff)); | |
| } | |
| } | |
| }; | |
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