Reviews Zero-Shot Sentiment Classification
This is a sentence-transformers model: It maps sentences & paragraphs to a 768 dimensional dense vector space and can be used for tasks like clustering or semantic search.
Usage (Sentence-Transformers)
Using this model becomes easy when you have sentence-transformers installed:
pip install -U sentence-transformers
Then you can use the model like this:
import numpy as np
from sentence_transformers import SentenceTransformer, util
sentences = ["Замечательный препарат, все пользуемся", "Последнее время данный препарат вызывает у меня сыпь"]
classes = ['негатив', 'нейтрально', 'позитив']
model = SentenceTransformer('pavlentiy/reviews-sentiment-multilingual-e5-base')
embeddings = model.encode(sentences)
embeddings_classes = model.encode(classes)
# Compute cosine-similarities
cosine_scores = np.array(util.cos_sim(embeddings, embeddings_classes))
a = lambda t: {0:'негатив', 1:'нейтральная', 2:'позитив'}[t]
argmax = cosine_scores.argmax(axis=1)
result_classes = list(map(a, argmax))
print(result_classes)
Training
The model was trained with the parameters:
DataLoader:
torch.utils.data.dataloader.DataLoader
of length 802 with parameters:
{'batch_size': 8, 'sampler': 'torch.utils.data.sampler.RandomSampler', 'batch_sampler': 'torch.utils.data.sampler.BatchSampler'}
Loss:
sentence_transformers.losses.MultipleNegativesRankingLoss.MultipleNegativesRankingLoss
with parameters:
{'scale': 20.0, 'similarity_fct': 'cos_sim'}
Parameters of the fit()-Method:
{
"epochs": 2,
"evaluation_steps": 0,
"evaluator": "sentence_transformers.evaluation.TranslationEvaluator.TranslationEvaluator",
"max_grad_norm": 1,
"optimizer_class": "<class 'torch.optim.adamw.AdamW'>",
"optimizer_params": {
"lr": 2e-05
},
"scheduler": "WarmupLinear",
"steps_per_epoch": null,
"warmup_steps": 160.4,
"weight_decay": 0.01
}
Full Model Architecture
SentenceTransformer(
(0): Transformer({'max_seq_length': 512, 'do_lower_case': False}) with Transformer model: XLMRobertaModel
(1): Pooling({'word_embedding_dimension': 768, 'pooling_mode_cls_token': False, 'pooling_mode_mean_tokens': True, 'pooling_mode_max_tokens': False, 'pooling_mode_mean_sqrt_len_tokens': False, 'pooling_mode_weightedmean_tokens': False, 'pooling_mode_lasttoken': False, 'include_prompt': True})
(2): Normalize()
)
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