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Multistream Transformers

A Python/PyTorch library implementing a multi-stream Transformer, with attention pooling across tokens at the same position and configurable causal behavior, sequence length, depth and stream count.

Independent OpenViST project profile, based on linked sources.

Multistream Transformers — OpenViST project profile in AI Models.
OpenViST project illustration. See the linked sources for product details.
Understand the project

Practical overview

When it fits

Use it when a Python/PyTorch experiment calls for a configurable multi-stream Transformer and you want to examine how stream count or causal settings affect a model.

Who it is for

  • Researchers prototyping multi-stream language or sequence models.
  • Developers comparing Transformer configurations, including stream count and causal operation.

Documented uses

  • Construct a Transformer model with configurable numbers of streams.
  • Explore causal or non-causal sequence-modeling configurations.
  • Compare a multi-stream setup with a regular Transformer; the README identifies one stream as equivalent to a regular Transformer.
Before you choose

Requirements & limits

The public GitHub repository reports an MIT license. The README documents installation through pip.

  • The implementation uses attention pooling across tokens at the same position instead of the paper’s skip connection across all streams.
  • The constructor exposes vocabulary size, dimension, depth, causal mode, maximum sequence length and number of streams.
  • The README gives a Python example using token IDs and a mask to obtain logits.

Check current requirements in the official documentation. Source-based guidance does not mean OpenViST has run or independently tested this project.

Source-based practical guide

Install the library and configure a model

Set up the package and define a MultistreamTransformer with documented model settings.

Before you start

  • A Python environment with PyTorch available.

Steps

  1. Install the package with the command below.

    Documented command
    pip install multistream-transformers
  2. Import MultistreamTransformer from multistream_transformers.

  3. Set the vocabulary size, dimension, depth, causal mode, maximum sequence length and number of streams in the constructor.

Expected outcome

A configured MultistreamTransformer object ready to receive inputs in a Python program.

Guide limitations

  • The installation and constructor example do not document training, inference workflows beyond a forward call, or deployment.
Evidence and transparency

Sources & review

Source record details
Source availability
Active
Sources checked
18 October 2026
Original website title
lucidrains/multistream-transformers · Official homepage title · retained in its source language