ver4a/llama.cpp
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convert : fix nomic-bert-moe mask token (#13757)

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Sigbjørn Skjæret 2025-06-01 18:07:21 +02:00 • committed by GitHub
parent c496fe0b1d
commit 5e1c3aed40
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2 changed files with 13 additions and 2 deletions
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6
convert_hf_to_gguf.py
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@ -3889,6 +3889,12 @@ class BertModel(TextModel):
SentencePieceTokenTypes.UNKNOWN,
] + toktypes[3:-1]
if self.model_arch == gguf.MODEL_ARCH.NOMIC_BERT_MOE:
# Add mask token missing from sentencepiece.bpe.model
tokens[250001] = b'<mask>'
scores[250001] = 0.0
toktypes[250001] = SentencePieceTokenTypes.CONTROL
self.gguf_writer.add_tokenizer_model("t5")
self.gguf_writer.add_tokenizer_pre("default")
self.gguf_writer.add_token_list(tokens)

9
src/llama-vocab.cpp
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@ -2080,9 +2080,11 @@ void llama_vocab::impl::load(llama_model_loader & ml, const LLM_KV & kv) {
std::string model_name;
std::string tokenizer_pre;
std::string general_arch;
ml.get_key(LLM_KV_GENERAL_NAME, model_name, false);
ml.get_key(LLM_KV_TOKENIZER_PRE, tokenizer_pre, false);
ml.get_key(LLM_KV_GENERAL_ARCHITECTURE, general_arch, false);
// model name to lowercase
std::transform(model_name.begin(), model_name.end(), model_name.begin(),
@ -2091,8 +2093,11 @@ void llama_vocab::impl::load(llama_model_loader & ml, const LLM_KV & kv) {
}
);
// set attributes by model/tokenizer name
if (_contains_any(tokenizer_pre, {"jina-v2-de", "jina-v2-es", "jina-v2-code"})) {
// set attributes by model/tokenizer/architecture name
if (false
|| _contains_any(tokenizer_pre, {"jina-v2-de", "jina-v2-es", "jina-v2-code"})
|| _contains_any(general_arch, {"nomic-bert-moe"})
) {
_set_token_attr("<mask>", LLAMA_TOKEN_ATTR_LSTRIP, true);
} else if (_contains_any(model_name, {"phi-3", "phi3"})) {
for (auto id : cache_special_tokens) {