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convert-llama-7b-pth-to-gguf.py : add token types

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klosax 2023-08-14 22:10:50 +02:00 committed by GitHub
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commit ab2cbd03ca
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1 changed files with 20 additions and 14 deletions
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convert-llama-7b-pth-to-gguf.py
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@ -110,8 +110,9 @@ gguf_writer.add_layer_norm_rms_eps(llm_arch, hparams["rms_norm_eps"])
print("gguf: get tokenizer metadata")
tokens: List[str] = []
tokens: List[bytes] = []
scores: List[float] = []
toktypes: List[int] = []
if Path(dir_model + "/tokenizer.model").is_file():
# vocab type sentencepiece
@ -121,26 +122,31 @@ if Path(dir_model + "/tokenizer.model").is_file():
for i in range(tokenizer.vocab_size()):
text: bytes
if tokenizer.is_unknown(i):
text = " \u2047 ".encode("utf-8")
elif tokenizer.is_control(i):
text = b""
if tokenizer.is_byte(i):
piece = tokenizer.id_to_piece(i)
if len(piece) != 6:
raise Exception(f"Invalid token: {piece}")
byte_value = int(piece[3:-1], 16)
text = struct.pack("B", byte_value)
else:
text = tokenizer.id_to_piece(i).replace("\u2581", " ").encode("utf-8")
score: float = tokenizer.get_score(i)
score: float
piece = tokenizer.id_to_piece(i)
text = piece.encode("utf-8")
score = tokenizer.get_score(i)
toktype = 1 # defualt to normal token type
if tokenizer.is_unknown(i): toktype = 2
if tokenizer.is_control(i): toktype = 3
# TODO: How to determinate if a token is user defined?
# ref: https://github.com/google/sentencepiece/blob/master/src/sentencepiece_model.proto
# if tokenizer.is_user_defined(i): toktype = 4
if tokenizer.is_unused(i): toktype = 5
if tokenizer.is_byte(i): toktype = 6
tokens.append(text)
scores.append(score)
toktypes.append(toktype)
gguf_writer.add_tokenizer_model("llama")
gguf_writer.add_token_list(tokens)
gguf_writer.add_token_scores(scores)
gguf_writer.add_token_types(toktypes)
if Path(dir_model + "/tokenizer.json").is_file():
with open(dir_model + "/tokenizer.json", "r", encoding="utf-8") as f: