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The LIVE-BART model was proposed in Learning to Imagine: Visually-Augmented Natural Language Generation by Tianyi Tang, Yushuo Chen, Yifan Du, Junyi Li, Wayne Xin Zhao and Ji-Rong Wen.

The detailed information and instructions can be found https://github.com/RUCAIBox/LIVE.

You should install the transformers at https://github.com/RUCAIBox/LIVE.

import torch
import torch.nn as nn
from transformers import BartForConditionalGeneration, AutoModel

class LiveModel(nn.Module):
    def __init__(self):

        self.model = BartForConditionalGeneration.from_pretrained('RUCAIBox/live-bart-base', image_fusion_encoder=True)
        self.vision_model = AutoModel.from_pretrained('openai/clip-vit-base-patch32').vision_model
        hidden_size = self.model.config.hidden_size
        self.trans = nn.Sequential(
            nn.Linear(self.vision_model.config.hidden_size, hidden_size * 4),
            nn.Linear(hidden_size * 4, hidden_size),

model = LiveModel()
trans = torch.load('trans.bart.pth')

# kwargs to model.forward() and model.generate()
# input_ids [batch_size, seq_len], same to hugging face
# attention_masks [batch_size, seq_len], same to hugging face
# labels [batch_size, seq_len], same to hugging face
# image_embeds [batch_size, image_num*patch_num, image_hidden_size], should be transfered using `trans`, image_num can be the sentence num of text, patch_num and image_hidden_size are 50 and 768 for openai/clip-vit-base-patch32, respectively
# images_mask [batch_size, seq_len, image_num], this is the mask in Figure 1, 1 represents the i-th word should attend to the j-th image
# images_mask_2d [batch_size, seq_len], 1 represents the i-th word should not be visually augmented, i.e., should not be attend to any image
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