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Add customizable ban tokens (#3899)

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saltacc 2023-09-15 14:27:27 -07:00 committed by GitHub
parent fb864dad7b
commit f01b9aa71f
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16 changed files with 56 additions and 5 deletions
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1
api-examples/api-example-chat-stream.py
View File

@ -70,6 +70,7 @@ async def run(user_input, history):
'add_bos_token': True,
'truncation_length': 2048,
'ban_eos_token': False,
'custom_token_bans': '',
'skip_special_tokens': True,
'stopping_strings': []
}

1
api-examples/api-example-chat.py
View File

@ -64,6 +64,7 @@ def run(user_input, history):
'add_bos_token': True,
'truncation_length': 2048,
'ban_eos_token': False,
'custom_token_bans': '',
'skip_special_tokens': True,
'stopping_strings': []
}

1
api-examples/api-example-stream.py
View File

@ -53,6 +53,7 @@ async def run(context):
'add_bos_token': True,
'truncation_length': 2048,
'ban_eos_token': False,
'custom_token_bans': '',
'skip_special_tokens': True,
'stopping_strings': []
}

1
api-examples/api-example.py
View File

@ -45,6 +45,7 @@ def run(prompt):
'add_bos_token': True,
'truncation_length': 2048,
'ban_eos_token': False,
'custom_token_bans': '',
'skip_special_tokens': True,
'stopping_strings': []
}

1
extensions/api/util.py
View File

@ -49,6 +49,7 @@ def build_parameters(body, chat=False):
'seed': int(body.get('seed', -1)),
'add_bos_token': bool(body.get('add_bos_token', True)),
'truncation_length': int(body.get('truncation_length', body.get('max_context_length', 2048))),
'custom_token_bans': str(body.get('custom_token_bans', '')),
'ban_eos_token': bool(body.get('ban_eos_token', False)),
'skip_special_tokens': bool(body.get('skip_special_tokens', True)),
'custom_stopping_strings': '', # leave this blank

1
extensions/openai/defaults.py
View File

@ -37,6 +37,7 @@ default_req_params = {
'guidance_scale': 1,
'negative_prompt': '',
'ban_eos_token': False,
'custom_token_bans': '',
'skip_special_tokens': True,
'custom_stopping_strings': '',
# 'logits_processor' - conditionally passed

5
modules/exllama.py
View File

@ -108,6 +108,11 @@ class ExllamaModel:
else:
self.generator.disallow_tokens(None)
if state['custom_token_bans']:
to_ban = [int(x) for x in state['custom_token_bans'].split(',')]
if len(to_ban) > 0:
self.generator.disallow_tokens(self.tokenizer, to_ban)
# Case 1: no CFG
if state['guidance_scale'] == 1:
self.generator.end_beam_search()

7
modules/exllamav2.py
View File

@ -30,7 +30,7 @@ class Exllamav2Model:
config.max_seq_len = shared.args.max_seq_len
config.scale_pos_emb = shared.args.compress_pos_emb
config.scale_alpha_value = shared.args.alpha_value
model = ExLlamaV2(config)
split = None
@ -60,6 +60,11 @@ class Exllamav2Model:
if state['ban_eos_token']:
settings.disallow_tokens(self.tokenizer, [self.tokenizer.eos_token_id])
if state['custom_token_bans']:
to_ban = [int(x) for x in state['custom_token_bans'].split(',')]
if len(to_ban) > 0:
settings.disallow_tokens(self.tokenizer, to_ban)
ids = self.tokenizer.encode(prompt)
ids = ids[:, -get_max_prompt_length(state):]
initial_len = ids.shape[-1]

20
modules/llamacpp_model.py
View File

@ -31,6 +31,13 @@ def ban_eos_logits_processor(eos_token, input_ids, logits):
return logits
def custom_token_ban_logits_processor(token_ids, input_ids, logits):
for token_id in token_ids:
logits[token_id] = -float('inf')
return logits
class LlamaCppModel:
def __init__(self):
self.initialized = False
@ -104,6 +111,15 @@ class LlamaCppModel:
prompt = prompt[-get_max_prompt_length(state):]
prompt = self.decode(prompt).decode('utf-8')
logit_processors = LogitsProcessorList()
if state['ban_eos_token']:
logit_processors.append(partial(ban_eos_logits_processor, self.model.tokenizer.eos_token_id))
if state['custom_token_bans']:
to_ban = [int(x) for x in state['custom_token_bans'].split(',')]
if len(to_ban) > 0:
logit_processors.append(partial(custom_token_ban_logits_processor, to_ban))
completion_chunks = self.model.create_completion(
prompt=prompt,
max_tokens=state['max_new_tokens'],
@ -116,9 +132,7 @@ class LlamaCppModel:
mirostat_tau=state['mirostat_tau'],
mirostat_eta=state['mirostat_eta'],
stream=True,
logits_processor=LogitsProcessorList([
partial(ban_eos_logits_processor, self.model.token_eos()),
]) if state['ban_eos_token'] else None,
logits_processor=logit_processors,
)
output = ""

9
modules/loaders.py
View File

@ -150,6 +150,7 @@ loaders_samplers = {
'guidance_scale',
'negative_prompt',
'ban_eos_token',
'custom_token_bans',
'add_bos_token',
'skip_special_tokens',
'auto_max_new_tokens',
@ -176,6 +177,7 @@ loaders_samplers = {
'guidance_scale',
'negative_prompt',
'ban_eos_token',
'custom_token_bans',
'add_bos_token',
'skip_special_tokens',
'auto_max_new_tokens',
@ -191,6 +193,7 @@ loaders_samplers = {
'guidance_scale',
'negative_prompt',
'ban_eos_token',
'custom_token_bans',
'auto_max_new_tokens',
},
'ExLlamav2': {
@ -201,6 +204,7 @@ loaders_samplers = {
'repetition_penalty_range',
'seed',
'ban_eos_token',
'custom_token_bans',
'auto_max_new_tokens',
},
'ExLlamav2_HF': {
@ -225,6 +229,7 @@ loaders_samplers = {
'guidance_scale',
'negative_prompt',
'ban_eos_token',
'custom_token_bans',
'add_bos_token',
'skip_special_tokens',
'auto_max_new_tokens',
@ -255,6 +260,7 @@ loaders_samplers = {
'guidance_scale',
'negative_prompt',
'ban_eos_token',
'custom_token_bans',
'add_bos_token',
'skip_special_tokens',
'auto_max_new_tokens',
@ -285,6 +291,7 @@ loaders_samplers = {
'guidance_scale',
'negative_prompt',
'ban_eos_token',
'custom_token_bans',
'add_bos_token',
'skip_special_tokens',
'auto_max_new_tokens',
@ -299,6 +306,7 @@ loaders_samplers = {
'mirostat_tau',
'mirostat_eta',
'ban_eos_token',
'custom_token_bans',
},
'llamacpp_HF': {
'temperature',
@ -322,6 +330,7 @@ loaders_samplers = {
'guidance_scale',
'negative_prompt',
'ban_eos_token',
'custom_token_bans',
'add_bos_token',
'skip_special_tokens',
'auto_max_new_tokens',

1
modules/presets.py
View File

@ -28,6 +28,7 @@ def default_preset():
'num_beams': 1,
'length_penalty': 1,
'early_stopping': False,
'custom_token_bans': '',
}

1
modules/shared.py
View File

@ -49,6 +49,7 @@ settings = {
'auto_max_new_tokens': False,
'max_tokens_second': 0,
'ban_eos_token': False,
'custom_token_bans': '',
'add_bos_token': True,
'skip_special_tokens': True,
'stream': True,

8
modules/text_generation.py
View File

@ -266,6 +266,14 @@ def generate_reply_HF(question, original_question, seed, state, stopping_strings
if state['ban_eos_token']:
generate_params['suppress_tokens'] = [shared.tokenizer.eos_token_id]
if state['custom_token_bans']:
to_ban = [int(x) for x in state['custom_token_bans'].split(',')]
if len(to_ban) > 0:
if generate_params.get('suppress_tokens', None):
generate_params['suppress_tokens'] += to_ban
else:
generate_params['suppress_tokens'] = to_ban
generate_params.update({'use_cache': not shared.args.no_cache})
if shared.args.deepspeed:
generate_params.update({'synced_gpus': True})

1
modules/ui.py
View File

@ -118,6 +118,7 @@ def list_interface_input_elements():
'guidance_scale',
'add_bos_token',
'ban_eos_token',
'custom_token_bans',
'truncation_length',
'custom_stopping_strings',
'skip_special_tokens',

2
modules/ui_parameters.py
View File

@ -118,8 +118,8 @@ def create_ui(default_preset):
with gr.Column():
shared.gradio['auto_max_new_tokens'] = gr.Checkbox(value=shared.settings['auto_max_new_tokens'], label='auto_max_new_tokens', info='Expand max_new_tokens to the available context length.')
shared.gradio['ban_eos_token'] = gr.Checkbox(value=shared.settings['ban_eos_token'], label='Ban the eos_token', info='Forces the model to never end the generation prematurely.')
shared.gradio['custom_token_bans'] = gr.Textbox(value=shared.settings['custom_token_bans'] or None, label='Custom token bans', info='Specific token IDs to ban from generating, comma-separated. The IDs can be found in a tokenizer.json file.')
shared.gradio['add_bos_token'] = gr.Checkbox(value=shared.settings['add_bos_token'], label='Add the bos_token to the beginning of prompts', info='Disabling this can make the replies more creative.')
shared.gradio['skip_special_tokens'] = gr.Checkbox(value=shared.settings['skip_special_tokens'], label='Skip special tokens', info='Some specific models need this unset.')
shared.gradio['stream'] = gr.Checkbox(value=shared.settings['stream'], label='Activate text streaming')

1
settings-template.yaml
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@ -19,6 +19,7 @@ custom_stopping_strings: ''
auto_max_new_tokens: false
max_tokens_second: 0
ban_eos_token: false
custom_token_bans: ''
add_bos_token: true
skip_special_tokens: true
stream: true