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# InternVL
# Copyright (c) 2024 OpenGVLab
# Licensed under The MIT License [see LICENSE for details]
# --------------------------------------------------------
import numpy as np
import torch
IGNORE_INDEX = -100
def pad_data_collator(features, pad_id=0):
first = features[0]
batch = {}
batch_lens = [feat['input_ids'].shape for feat in features]
max_item_length = max(batch_lens)[0]
for idx in range(len(features)):
feat = features[idx]
temp_input_ids = torch.LongTensor([pad_id] * max_item_length)
temp_input_ids[:feat['input_ids'].shape[0]] = feat['input_ids']
feat['input_ids'] = temp_input_ids
temp_labels = torch.LongTensor([IGNORE_INDEX] * max_item_length)
temp_labels[:feat['labels'].shape[0]] = feat['labels']
feat['labels'] = temp_labels
feat['attention_mask'] = feat['input_ids'].ne(pad_id)
# Special handling for labels.
# Ensure that tensor is created with the correct type
# (it should be automatically the case, but let's make sure of it.)
if 'label' in first and first['label'] is not None:
label = first['label'].item() if isinstance(first['label'], torch.Tensor) else first['label']
dtype = torch.long if isinstance(label, int) else torch.float
batch['labels'] = torch.tensor([f['label'] for f in features], dtype=dtype)
elif 'label_ids' in first and first['label_ids'] is not None:
if isinstance(first['label_ids'], torch.Tensor):
batch['labels'] = torch.stack([f['label_ids'] for f in features])
else:
dtype = torch.long if isinstance(first['label_ids'][0], int) else torch.float
batch['labels'] = torch.tensor([f['label_ids'] for f in features], dtype=dtype)
# Handling of all other possible keys.
# Again, we will use the first element to figure out which key/values are not None for this model.
for k, v in first.items():
if k not in ('label', 'label_ids') and v is not None and not isinstance(v, str):
if isinstance(v, torch.Tensor):
batch[k] = torch.stack([f[k] for f in features])
elif isinstance(v, np.ndarray):
batch[k] = torch.tensor(np.stack([f[k] for f in features]))
else:
batch[k] = torch.tensor([f[k] for f in features])
return batch
def concat_pad_data_collator(features, max_item_length=None, pad_id=0):
first = features[0]
batch = {}
batch_lens = [feat['input_ids'].shape for feat in features]
max_item_length = max_item_length or max(batch_lens)[0]
# print(f'{max_item_length=} {pad_id=}')
for idx in range(len(features)):
feat = features[idx]
temp_input_ids = torch.LongTensor([pad_id] * max_item_length)
temp_input_ids[:feat['input_ids'].shape[0]] = feat['input_ids']
feat['input_ids'] = temp_input_ids
temp_labels = torch.LongTensor([IGNORE_INDEX] * max_item_length)
temp_labels[:feat['labels'].shape[0]] = feat['labels']
feat['labels'] = temp_labels
feat['attention_mask'] = feat['input_ids'].ne(pad_id)
if 'position_ids' in feat:
temp_position_ids = torch.LongTensor([pad_id] * max_item_length)
temp_position_ids[:feat['position_ids'].shape[0]] = feat['position_ids']
feat['position_ids'] = temp_position_ids
if 'loss_weight' in feat:
temp_loss_weight = torch.FloatTensor([pad_id] * max_item_length)
temp_loss_weight[:feat['loss_weight'].shape[0]] = feat['loss_weight']
feat['loss_weight'] = temp_loss_weight
# Special handling for labels.
# Ensure that tensor is created with the correct type
# (it should be automatically the case, but let's make sure of it.)
if 'label' in first and first['label'] is not None:
label = first['label'].item() if isinstance(first['label'], torch.Tensor) else first['label']
dtype = torch.long if isinstance(label, int) else torch.float
batch['labels'] = torch.tensor([f['label'] for f in features], dtype=dtype)
elif 'label_ids' in first and first['label_ids'] is not None:
if isinstance(first['label_ids'], torch.Tensor):
batch['labels'] = torch.stack([f['label_ids'] for f in features])
else:
dtype = torch.long if isinstance(first['label_ids'][0], int) else torch.float
batch['labels'] = torch.tensor([f['label_ids'] for f in features], dtype=dtype)
# Handling of all other possible keys.
# Again, we will use the first element to figure out which key/values are not None for this model.
for k, v in first.items():
if k not in ('label', 'label_ids', 'pixel_values', 'image_flags') and \
v is not None and not isinstance(v, str):
if isinstance(v, torch.Tensor):
batch[k] = torch.stack([f[k] for f in features])
elif isinstance(v, np.ndarray):
batch[k] = torch.tensor(np.stack([f[k] for f in features]))
else:
batch[k] = torch.tensor([f[k] for f in features])
if k in ('pixel_values', 'image_flags'):
if isinstance(v, torch.Tensor):
batch[k] = torch.concat([f[k] for f in features])
elif isinstance(v, np.ndarray):
batch[k] = torch.concat(np.stack([f[k] for f in features]))
else:
batch[k] = torch.concat([f[k] for f in features])
return batch
def dpo_concat_pad_data_collator(features, pad_id=0):
first = features[0]
batch = {}
for prefix in ['chosen_', 'rejected_']:
batch_lens = [feat[f'{prefix}input_ids'].shape[0] for feat in features]
max_item_length = max(batch_lens)
for idx in range(len(features)):
feat = features[idx]
temp_input_ids = torch.LongTensor([pad_id] * max_item_length)
temp_input_ids[:feat[f'{prefix}input_ids'].shape[0]] = feat[f'{prefix}input_ids']
feat[f'{prefix}input_ids'] = temp_input_ids
temp_labels = torch.LongTensor([IGNORE_INDEX] * max_item_length)
temp_labels[:feat[f'{prefix}labels'].shape[0]] = feat[f'{prefix}labels']
feat[f'{prefix}labels'] = temp_labels
feat[f'{prefix}attention_mask'] = feat[f'{prefix}input_ids'].ne(pad_id)
# Handling of all other possible keys.
# Again, we will use the first element to figure out which key/values are not None for this model.
for k, v in first.items():
if k not in ('pixel_values', 'image_flags') and \
v is not None and not isinstance(v, str):
if isinstance(v, torch.Tensor):
batch[k] = torch.stack([f[k] for f in features])
elif isinstance(v, np.ndarray):
batch[k] = torch.tensor(np.stack([f[k] for f in features]))
else:
batch[k] = torch.tensor([f[k] for f in features])
if k in ('pixel_values', 'image_flags'):
if isinstance(v, torch.Tensor):
batch[k] = torch.concat([f[k] for f in features])
elif isinstance(v, np.ndarray):
batch[k] = torch.concat(np.stack([f[k] for f in features]))
else:
batch[k] = torch.concat([f[k] for f in features])
return batch
def count_leading_negatives(labels):
for i, value in enumerate(labels):
if value != IGNORE_INDEX:
return i
return len(labels)
def concat_pad_data_collator_pure_text(features, max_item_length=None, pad_id=0):
first = features[0]
batch = {}
batch_lens = [feat['input_ids'].shape for feat in features]
max_item_length = max_item_length or max(batch_lens)[0]
for idx in range(len(features)):
feat = features[idx]
temp_input_ids = torch.LongTensor([pad_id] * max_item_length)
temp_input_ids[:feat['input_ids'].shape[0]] = feat['input_ids']
feat['input_ids'] = temp_input_ids
temp_labels = torch.LongTensor([IGNORE_INDEX] * max_item_length)
temp_labels[:feat['labels'].shape[0]] = feat['labels']
feat['labels'] = temp_labels
temp_attention_mask = torch.LongTensor([False] * max_item_length)
temp_attention_mask[:feat['attention_mask'].shape[0]] = feat['attention_mask']
feat['attention_mask'] = temp_attention_mask
if 'position_ids' in feat:
temp_position_ids = torch.LongTensor([1] * max_item_length)
temp_position_ids[:feat['position_ids'].shape[0]] = feat['position_ids']
feat['position_ids'] = temp_position_ids
# for i, item in enumerate(features):
# print(f'concat_pad_data_collator_pure_text {i=} item')
# for k,v in item.items():
# print(f'{k=}, {v.shape=}')
# Handling of all other possible keys.
# Again, we will use the first element to figure out which key/values are not None for this model.
for k, v in first.items():
if isinstance(v, torch.Tensor):
batch[k] = torch.stack([f[k] for f in features])
elif isinstance(v, np.ndarray):
batch[k] = torch.tensor(np.stack([f[k] for f in features]))
else:
batch[k] = torch.tensor([f[k] for f in features])
return batch
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