vbatts/llama.cpp
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Minor improvements in GPT2 tokenizer (#3567)

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* Fixing minor bugs in bpe_gpt2_preprocess

* Don't add bos token in test
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goerch 2023-10-10 18:59:52 +02:00 • committed by GitHub
parent c5b49360d0
commit 233fc1c69f
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5 changed files with 17 additions and 20 deletions
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llama.cpp
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@ -6342,7 +6342,6 @@ private:
for (int i = 0; i < (int)text_utf.size(); i++) {
const std::string & utf_char = text_utf[i];
bool split_condition = false;
// const char* text_pos = raw_text_p + utf_char.seq_offset_bytes;
int bytes_remain = text_utf.size() - i;
// forward backward lookups
const std::string & utf_char_next = (i + 1 < (int)text_utf.size()) ? text_utf[i + 1] : "";
@ -6368,9 +6367,9 @@ private:
if (!split_condition && bytes_remain >= 3) {
// 're|'ve|'ll
if (utf_char == "\'" && (
(utf_char_next == "r" || utf_char_next_next == "e") ||
(utf_char_next == "v" || utf_char_next_next == "e") ||
(utf_char_next == "l" || utf_char_next_next == "l"))
(utf_char_next == "r" && utf_char_next_next == "e") ||
(utf_char_next == "v" && utf_char_next_next == "e") ||
(utf_char_next == "l" && utf_char_next_next == "l"))
) {
split_condition = true;
}
@ -6421,7 +6420,7 @@ private:
else if (collecting_special && (codepoint_type(utf_char) == CODEPOINT_TYPE_LETTER || codepoint_type(utf_char) == CODEPOINT_TYPE_DIGIT || codepoint_type(utf_char) == CODEPOINT_TYPE_WHITESPACE)) {
split_condition = true;
}
else if (collecting_whitespace_lookahead && codepoint_type(utf_char_next) != CODEPOINT_TYPE_WHITESPACE) {
else if (collecting_whitespace_lookahead && (codepoint_type(utf_char_next) == CODEPOINT_TYPE_LETTER || codepoint_type(utf_char_next) == CODEPOINT_TYPE_DIGIT)) {
split_condition = true;
}
}