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#ifndef _ZoO_CORE_KNOWLEDGE_H_
#define _ZoO_CORE_KNOWLEDGE_H_
#include "../core/char_types.h"
#include "../core/index_types.h"
#include "knowledge_types.h"
void ZoO_knowledge_initialize (struct ZoO_knowledge k [const restrict static 1]);
void ZoO_knowledge_finalize (struct ZoO_knowledge k [const restrict static 1]);
/*
* When returning 0:
* {word} was either added to {k} or its representation in {k} has its
* occurrences count increased.
* {*result} indicates where {word} is in {k->words}.
*
* When returning -1:
* Something went wrong when adding the occurrence of {word} to {k}.
* {k} remains semantically unchanged.
* {*result} may or may not have been altered.
*/
int ZoO_knowledge_learn
(
struct ZoO_knowledge k [const static 1],
const ZoO_char word [const restrict static 1],
ZoO_index result [const restrict static 1]
);
int ZoO_knowledge_learn_sequence
(
struct ZoO_knowledge k [const static 1],
const ZoO_index sequence [const restrict],
const ZoO_index sequence_length
);
int ZoO_knowledge_get_following_sequences_ref
(
const struct ZoO_knowledge k [const static 1],
const ZoO_index initial_word,
const ZoO_index * restrict following_sequences_ref [const restrict static 1],
const ZoO_index * restrict following_sequences_weights [const restrict static 1],
ZoO_index following_sequences_weights_sum [const static 1]
);
int ZoO_knowledge_get_sequence
(
const struct ZoO_knowledge k [const static 1],
const ZoO_index sequences_ref,
const ZoO_index * restrict sequence [const restrict static 1]
);
int ZoO_knowledge_get_word
(
const struct ZoO_knowledge k [const static 1],
const ZoO_index word_ref,
const ZoO_char * word [const restrict static 1],
size_t word_size [const restrict static 1]
);
/*
* When returning 0:
* {word} is in {k}.
* {word} is located at {k->words[*result]}.
*
* When returning -1:
* {word} is not in {k}.
* {*result} is where {word} was expected to be found in
* {k->sorted_indices}.
*/
int ZoO_knowledge_find_word_id
(
const struct ZoO_knowledge k [const restrict static 1],
const ZoO_char word [const restrict static 1],
ZoO_index result [const restrict static 1]
);
int ZoO_knowledge_find_preceding_words
(
const struct ZoO_knowledge k [const static 1],
const ZoO_index sequence [const restrict],
const ZoO_index markov_order,
const ZoO_index * restrict preceding_words [const restrict static 1],
const ZoO_index * restrict preceding_words_weights [const restrict static 1],
ZoO_index preceding_words_weights_sum [const restrict static 1]
);
int ZoO_knowledge_find_following_words
(
const struct ZoO_knowledge k [const static 1],
const ZoO_index sequence [const restrict],
const ZoO_index sequence_length,
const ZoO_index markov_order,
const ZoO_index * restrict following_words [const restrict static 1],
const ZoO_index * restrict following_words_weights [const restrict static 1],
ZoO_index following_words_weights_sum [const restrict static 1]
);
#endif
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