Bump sentence-transformers from 2.2.2 to 2.6.1

[dependabot[bot]]

Bumps sentence-transformers from 2.2.2 to 2.6.1.

Release notes

Sourced from sentence-transformers's releases.

v2.6.1 - Fix Quantized Semantic Search rescoring

This is a patch release to fix a bug in semantic_search_faiss and semantic_search_usearch that caused the scores to not correspond to the returned corpus indices. Additionally, you can now evaluate embedding models after quantizing their embeddings.

Precision support in EmbeddingSimilarityEvaluator

You can now pass precision to the EmbeddingSimilarityEvaluator to evaluate the performance after quantization:

from sentence_transformers import SentenceTransformer
from sentence_transformers.evaluation import EmbeddingSimilarityEvaluator, SimilarityFunction
import datasets
model = SentenceTransformer("all-mpnet-base-v2")
stsb = datasets.load_dataset("mteb/stsbenchmark-sts", split="test")
print("Spearman correlation based on Cosine Similarity on the STS Benchmark test set:")
for precision in ["float32", "uint8", "int8", "ubinary", "binary"]:
evaluator = EmbeddingSimilarityEvaluator(
stsb["sentence1"],
stsb["sentence2"],
[score / 5 for score in stsb["score"]],
main_similarity=SimilarityFunction.COSINE,
name="sts-test",
precision=precision,
)
print(precision, evaluator(model))

Spearman correlation based on Cosine Similarity on the STS Benchmark test set:
float32 0.8342190421330611
uint8 0.8260094846238505
int8 0.8312754408857808
ubinary 0.8244338431442343
binary 0.8244338431442343

All changes

• Add 'precision' support to the EmbeddingSimilarityEvaluator by @​tomaarsen in #2559
• [hotfix] Quantization patch; fix semantic_search_faiss/semantic_search_usearch rescoring by @​tomaarsen in #2558
• Fix a typo in a docstring in CosineSimilarityLoss.py by @​bryant1410 in #2553

Full Changelog: https://github.com/UKPLab/sentence-transformers/compare/v2.6.0...v2.6.1

v2.6.0 - Embedding Quantization, GISTEmbedLoss

This release brings embedding quantization: a way to heavily speed up retrieval & other tasks, and a new powerful loss function: GISTEmbedLoss.

Install this version with

pip install sentence-transformers==2.6.0

... (truncated)

Commits

• 11e5a41 Release v2.6.1
• 64bc235 Fix a typo in a docstring in CosineSimilarityLoss.py (#2553)
• add581e Add 'precision' support to the EmbeddingSimilarityEvaluator (#2559)
• 89958ca [hotfix] Quantization patch; fix semantic_search_faiss/semantic_search_usea...
• a5f7749 Release v2.6.0
• 13a9f3f [feat] Add binary & scalar embedding quantization support to Sentence Trans...
• e6af66f Also update return docstring of encode_multi_process (#2548)
• caaa28d Fix SentenceTransformer encode documentation return type default (numpy vecto...
• 87f4180 [deprecation] Deprecate save_to_hub in favor of push_to_hub; add safe_s...
• fc2a2d8 Enable saving modules as pytorch_model.bin (#2542)
• Additional commits viewable in compare view

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