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Should we ensure relative_hidden_states to involve T_{f}^{+} and T_{f}^{-}? #60

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Should we ensure relative_hidden_states to involve T_{f}^{+} and T_{f}^{-}? #60

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11 changes: 9 additions & 2 deletions repe/rep_reading_pipeline.py
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Original file line number Diff line number Diff line change
Expand Up @@ -136,12 +136,19 @@ def get_directions(
if direction_finder.needs_hiddens:
# get raw hidden states for the train inputs
hidden_states = self._batched_string_to_hiddens(train_inputs, rep_token, hidden_layers, batch_size, which_hidden_states, **tokenizer_args)

# get differences between pairs
relative_hidden_states = {k: np.copy(v) for k, v in hidden_states.items()}
for layer in hidden_layers:
for _ in range(n_difference):
relative_hidden_states[layer] = relative_hidden_states[layer][::2] - relative_hidden_states[layer][1::2]
positive_template_hidden, negative_template_hidden = [], []
for hidden, train_label in zip(relative_hidden_states[layer], np.concatenate(train_labels)):
if train_label:
positive_template_hidden.append(hidden)
else:
negative_template_hidden.append(hidden)

relative_hidden_states[layer] = np.array(positive_template_hidden) - np.array(negative_template_hidden)

# get the directions
direction_finder.directions = direction_finder.get_rep_directions(
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