nlpsig

NLPSig (nlpsig) is a Python package for constructing streams/paths of embeddings obtained from transformers. The key contributions are:

• A simple API for taking streams of textual data and constructing streams of embeddings from transformers
  • The nlpsig.SentenceEncoder and nlpsig.TextEncoder classes allow you to pass in a corpus of text data (in a variety of formats) and obtain corresponding embeddings using the sentence-transformer and HuggingFace transformers libraries, respectively.
  • The nlpsig.PrepareData allows you to easily construct paths/streams of embeddings which can be used for several downstream tasks.
• Simple API for performing dimensionality reduction with nlpsig.DimReduce on the embeddings obtained from transformers by some simple wrappers over popular dimensionality reduction algorithms such as PCA, UMAP, t-SNE, etc.
  • This is particularly useful if we wish to use path signatures in any downstream model since the dimensionality of the embeddings obtained from transformers is usually very high.
  • We present some Signature Network models for longitudinal NLP tasks in the sig-networks library which uses these paths constructed in this library as inputs to neural networks which utilise path signature methodology.
• We also have simple classes for constructing train/test splits of the data and for K-fold cross-validation in which are general and are applied to examples in the Signature Networks in the sig-networks library.

Installation

NLPSig is available on PyPI and can be installed with pip:

pip install nlpsig

Contributing

To take advantage of pre-commit, which will automatically format your code and run some basic checks before you commit:

pip install pre-commit  # or brew install pre-commit on macOS
pre-commit install  # will install a pre-commit hook into the git repo

After doing this, each time you commit, some linters will be applied to format the codebase. You can also/alternatively run pre-commit run --all-files to run the checks.

See CONTRIBUTING.md for more information on running the test suite using nox.