This is a Rust implementation of simple but powerful sentence embedding algorithms based on SIF and uSIF described in the following papers:

• Sanjeev Arora, Yingyu Liang, and Tengyu Ma, A Simple but Tough-to-Beat Baseline for Sentence Embeddings, ICLR 2017
• Kawin Ethayarajh, Unsupervised Random Walk Sentence Embeddings: A Strong but Simple Baseline, RepL4NLP 2018

• No GPU required: This library runs on CPU only.
• Fast embeddings: This library provides fast sentence embeddings thanks to the simple algorithms of SIF and uSIF. We observed that our SIF implementation could process ~80K sentences per second on M2 MacBook Air. (See benchmarks.)
• Reasonable evaluation scores: The performances of SIF and uSIF on similarity evaluation tasks do not outperform those of SOTA models such as SimCSE. However, they are not so worse. (See evaluations.)

This library will help you if

• DNN-based sentence embeddings are too slow for your application,
• you do not have an option using GPUs, or
• you want baseline sentence embeddings for your development.

https://docs.rs/sif-embedding/

See tutorial.

benchmarks provides speed benchmarks.

We observed that, with an English Wikipedia dataset, our SIF implementation could process ~80K sentences per second on MacBook Air (one core of Apple M2, 24 GB RAM).

evaluations provides tools to evaluate sif-embedding on several similarity evaluation tasks.

evaluations/senteval provides evaluation tools and results for SentEval STS/SICK Tasks.

As one example, the following table shows the evaluation results with the Spearman's rank correlation coefficient for the STS-Benchmark.

eveluations/japanese provides evaluation tools and results for JGLUE JSTS and JSICK tasks.

As one example, the following table shows the evaluation results with the Spearman's rank correlation coefficient.

qdrant-examples provides an example of using sif-embedding with qdrant/rust-client.

Trouble shooting: Tips on how to resolve errors I faced in my environment.

Licensed under either of

• Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)

at your option.