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README.md
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---
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license: apache-2.0
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---
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license: apache-2.0
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datasets:
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- MoritzLaurer/synthetic_zeroshot_mixtral_v0.1
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language:
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- en
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metrics:
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- f1
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pipeline_tag: zero-shot-classification
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tags:
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- text classification
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- zero-shot
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- small language models
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- RAG
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- sentiment analysis
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---
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# ⭐ GLiClass: Generalist and Lightweight Model for Sequence Classification
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This is an efficient zero-shot classifier inspired by [GLiNER](https://github.com/urchade/GLiNER/tree/main) work. It demonstrates the same performance as a cross-encoder while being more compute-efficient because classification is done at a single forward path.
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It can be used for `topic classification`, `sentiment analysis` and as a reranker in `RAG` pipelines.
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The model was trained on synthetic data and can be used in commercial applications.
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This version of the model utilize the [LLM2Vec](https://github.com/McGill-NLP/llm2vec/tree/main/llm2vec) approach for converting modern decoders to bi-directional encoder. It brings the following benefits:
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* Enhanced performance and generalization capabilities;
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* Support for Flash Attention;
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* Extended context window.
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### How to use:
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First of all, you need to install GLiClass library:
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```bash
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pip install gliclass
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```
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To use this particular Qwen-based model you need different `transformers` package version than llm2vec requires, so install it manually:
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```bash
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pip install transformers==4.44.1
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```
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Than you need to initialize a model and a pipeline:
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```python
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from gliclass import GLiClassModel, ZeroShotClassificationPipeline
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from transformers import AutoTokenizer
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model = GLiClassModel.from_pretrained("knowledgator/gliclass-qwen-1.5B-v1.0")
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tokenizer = AutoTokenizer.from_pretrained("knowledgator/gliclass-qwen-1.5B-v1.0")
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pipeline = ZeroShotClassificationPipeline(model, tokenizer, classification_type='multi-label', device='cuda:0')
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text = "One day I will see the world!"
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labels = ["travel", "dreams", "sport", "science", "politics"]
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results = pipeline(text, labels, threshold=0.5)[0] #because we have one text
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for result in results:
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print(result["label"], "=>", result["score"])
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```
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### Benchmarks:
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While the model is some how comparable to DeBERTa version in zero-shot setting, it demonstrates state-of-the-art performance in few-shot setting.
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![Few-shot performance](few_shot.png)
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### Join Our Discord
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Connect with our community on Discord for news, support, and discussion about our models. Join [Discord](https://discord.gg/dkyeAgs9DG).
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