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[Train-on-what; human simulator] #85

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8 changes: 8 additions & 0 deletions tinker_cookbook/renderers.py
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Original file line number Diff line number Diff line change
Expand Up @@ -42,6 +42,7 @@ class TrainOnWhat(StrEnum):
ALL_MESSAGES = "all_messages"
ALL_TOKENS = "all_tokens"
ALL_USER_AND_SYSTEM_MESSAGES = "all_user_and_system_messages"
ALL_BUT_FIRST_USER_AND_SYSTEM_MESSAGES = "all_but_first_user_and_system_messages"


class Renderer:
Expand Down Expand Up @@ -109,7 +110,10 @@ def build_supervised_example(
- weights: a tensor of weights
"""
tokens_weights = [(token, 0) for token in start_tokens]
first_user_turn_ended = False
for idx, message in enumerate(messages[:-1]):
if message["role"] == "assistant":
first_user_turn_ended = True
ob_part, action_part, action_tail = render_message(idx, message)
if train_on_what == TrainOnWhat.LAST_ASSISTANT_MESSAGE:
tokens_weights.extend([(token, 0) for token in ob_part + action_part])
Expand All @@ -128,6 +132,10 @@ def build_supervised_example(
tokens_weights += [(token, 0) for token in ob_part]
is_user_or_system = message["role"] in ["user", "system"]
tokens_weights += [(token, int(is_user_or_system)) for token in action_part]
elif train_on_what == TrainOnWhat.ALL_BUT_FIRST_USER_AND_SYSTEM_MESSAGES:
tokens_weights += [(token, 0) for token in ob_part]
action_weights = int((message["role"] in ["user", "system"]) and first_user_turn_ended)
tokens_weights += [(token, action_weights) for token in action_part]
else:
raise ValueError(f"Unknown train_on_what: {train_on_what}")
ob_part, action_part, action_tail = render_message(len(messages) - 1, messages[-1])
Expand Down