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RUDOLPH: One Hyper-Tasking Transformer Can be Creative as DALL-E and GPT-3 and Smart as CLIP

Model was trained by Sber AI team.

Model Description

RUssian Decoder On Language Picture Hyper-tasking (RUDOLPH) 2.7B is the largest text-image-text transformer designed for an easy fine-tuning for a range of tasks: from generating images by text description and image classification to visual question answering and more. This model demonstrates the power of Hyper-tasking Transformers.

Hyper-tasking model is a generalized multi-tasking model, i.e., the model that can solve almost all tasks within supported modalities, mandatory including mutual pairwise translations between modalities (two modalities in case of RUDOLPH: images and Russian texts).

  • Tasks: text2image generation, self reranking, text ranking, image ranking, image2text generation, zero-shot image classification, text2text generation, text qa, math qa, image captioning, image generation, text recognition in the wild, visual qa, and so on
  • Language: Russian
  • Type: decoder
  • Num Parameters: 2.7B
  • Training Data Volume: 119 million text-image pairs, 60 million text paragraphs

Details of architecture

The maximum sequence length that this model may be used with depends on the modality and stands for 384 - 576 - 128 for the left text tokens, image tokens, and right text tokens, respectively.

RUDOLPH 2.7B is a Transformer-based decoder model with the following parameters:

  • num_layers (32) — Number of hidden layers in the Transformer decoder.
  • hidden_size (2560) — Dimensionality of the hidden layers.
  • num_attention_heads (32) — Number of attention heads for each attention layer.

Sparse Attention Masks

The primary proposed method is to modify the sparse transformer's attention mask to better control modalities. It allows us to calculate the transitions of modalities in both directions, unlike another similar work DALL-E Transformer, which used only one direction, "text to image". The proposed "image to right text" direction is achieved by extension sparse attention mask to the right for auto-repressively text generation with both image and left text condition.


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