README.md

---
library_name: transformers
language:
- en
- hy
base_model:
- intfloat/multilingual-e5-base
tags:
- sentence-transformers
---

<div style="background-color: rgba(119, 0, 204, 0.25); border: 2px solid #7700cc; border-radius: 8px; padding: 16px; margin: 16px 0; color: #ffffff;">
  <strong>🚀 New Version Available!</strong><br><br>
  A newer and significantly improved version of this model has been released! Check out <a href="https://huggingface.co/Metric-AI/armenian-text-embeddings-2-base"><strong>ATE-2</strong></a> for much better performance. It is a drop-in replacement for this model.<br>
  A larger version, <a href="https://huggingface.co/Metric-AI/armenian-text-embeddings-2-large"><strong>ATE-2-large</strong></a>, is also available.
</div>

# Armenian-Text-Embeddings-1

## Model Details
- **Model Name**: Armenian-Text-Embeddings-1
- **Model Type**: Text Embeddings for Armenian Language
- **Base Model**: intfloat/multilingual-e5-base
- **Version**: 1.0.0
- **License**: Apache 2.0
- **Last Updated**: November 2024
- **Model Architecture**: Transformer-based embeddings model
- **Input**: Armenian text
- **Output**: Dense vector embeddings

## Quick Start
```python
import torch.nn.functional as F

from torch import Tensor
from transformers import AutoTokenizer, AutoModel

tokenizer = AutoTokenizer.from_pretrained('Metric-AI/armenian-text-embeddings-1')
model = AutoModel.from_pretrained('Metric-AI/armenian-text-embeddings-1')


def average_pool(last_hidden_states: Tensor,
                 attention_mask: Tensor) -> Tensor:
    last_hidden = last_hidden_states.masked_fill(~attention_mask[..., None].bool(), 0.0)
    return last_hidden.sum(dim=1) / attention_mask.sum(dim=1)[..., None]


# Each input text should start with "query: " or "passage: ", even for non-English texts.
# For tasks other than retrieval, you can simply use the "query: " prefix.
input_texts = [
    'query: Ինչպե՞ս պատրաստել տոլմա',  # How to make tolma
    'query: Քանի՞ գրամ սպիտակուց է հարկավոր օրական',  # How many grams of protein needed daily
    
    """passage: Տոլմայի բաղադրատոմս՝
    Բաղադրիչներ՝
    - 500գ աղացած միս
    - 1 բաժակ բրինձ
    - Խաղողի տերևներ
    - 2 գլուխ սոխ
    - Համեմունքներ՝ աղ, սև պղպեղ, քարի
    
    Պատրաստման եղանակը՝
    1. Միսը խառնել բրնձի, մանր կտրատած սոխի և համեմունքների հետ
    2. Խաղողի տերևները լվանալ և թողնել տաք ջրի մեջ 10 րոպե
    3. Լցոնել տերևները և դասավորել կաթսայի մեջ
    4. Եփել դանդաղ կրակի վրա 45-60 րոպե""",  # Detailed tolma recipe
    
    """passage: Սպիտակուցի օրական չափաբաժինը կախված է մարդու քաշից, սեռից և ֆիզիկական ակտիվությունից: 
    Միջին հաշվով, կանանց համար խորհուրդ է տրվում 46-50 գրամ սպիտակուց օրական: 
    Մարզիկների համար այս թիվը կարող է հասնել մինչև 1.6-2 գրամ մարմնի քաշի յուրաքանչյուր կիլոգրամի համար: 
    Հղիների համար պահանջվում է լրացուցիչ 25 գրամ սպիտակուց:
    
    Սպիտակուցի հարուստ աղբյուրներ են՝
    - Հավի միս (31գ/100գ)
    - Ձու (13գ/100գ)
    - Ոսպ (25գ/100գ)
    - Մածուն (3.5գ/100գ)"""] # Detailed protein intake advice

# Tokenize the input texts
batch_dict = tokenizer(input_texts, max_length=512, padding=True, truncation=True, return_tensors='pt')
outputs = model(**batch_dict)
embeddings = average_pool(outputs.last_hidden_state, batch_dict['attention_mask'])

# normalize embeddings
embeddings = F.normalize(embeddings, p=2, dim=1)
scores = (embeddings[:2] @ embeddings[2:].T) * 100
print(scores.tolist())

# [[83.96063232421875, 30.283924102783203], [32.504661560058594, 82.4246826171875]]
```

## Support for Sentence Transformers

Below is an example for usage with sentence_transformers.
```python
from sentence_transformers import SentenceTransformer
model = SentenceTransformer('Metric-AI/armenian-text-embeddings-1')

embeddings = model.encode(input_texts, normalize_embeddings=True)
```


## Intended Use
### Primary Intended Uses
- Retrieval-augmented generation (RAG)
- Semantic search in Armenian
- Document similarity computation
- Cross-lingual text understanding
- Text classification tasks
- Information retrieval

## Training Data
### Dataset Details
- **Source**: Reddit dataset with English-Armenian translations
- **Size**: 1.08M pairs of rows
- **Content Type**: Title and body text pairs
- **Token Statistics**:
  - Training Set:
    - Translated Title Tokens: 23,921,393
    - Translated Body Tokens: 194,200,654
  - Test Set:
    - Translated Title Tokens: 242,443
    - Translated Body Tokens: 1,946,164
- **Split Ratio**: 99% train, 1% test

## Training Procedure
### Training Details
- **Weight Averaging**:
  - Base model (multilingual-e5-base): 0.6 weight
  - Fine-tuned model: 0.4 weight
- **Training Duration**: 2 days
- **Hardware**: 4 x NVIDIA A100 40GB GPUs
- **Training Parameters**:
  - Epochs: 5
  - Batch Size: 256 per GPU, (256*4 in total)
  - Learning Rate: 5e-5
  - Weight Decay: 0.01
  - Warmup Steps: 1000
  - Maximum Sequence Length: 128 tokens
  - FP16 Training: Enabled
  - Gradient Clipping: 1.0

### Optimization Configuration
- **Framework**: DeepSpeed Stage 2
- **Optimizer**: AdamW with auto weight decay
- **Mixed Precision**: FP16 with dynamic loss scaling
- **ZeRO Optimization**: Stage 2 with:
  - Allgather partitions
  - Overlap communications
  - Contiguous gradients
- **Additional Features**:
  - Gradient checkpointing
  - Tensor parallelism (size: 2)

## Performance and Limitations
### Capabilities
- Effective for semantic similarity tasks in Armenian
- Suitable for document classification and clustering

### Limitations
- Performance may vary on domain-specific terminology
- May not capture Armenian-specific cultural contexts effectively
- Limited by the quality of training data translations

### Known Biases
- May exhibit biases present in Reddit content

## Environmental Impact
- **Training Hardware**: 4 x NVIDIA A100 40GB
- **Training Duration**: 48 hours
- **Estimated Energy Consumption**: 384 kWh (estimated based on A100 power consumption)

## Ethical Considerations
- **Data Privacy**: Training data from public Reddit content
- **Potential Misuse**: Could be misused for content manipulation or spam
- **Bias**: May perpetuate social biases present in Reddit content
- **Recommendations**: 
  - Monitor system outputs for harmful content
  - Implement content filtering for production use
  - Regular bias assessment recommended

## Technical Specifications
- **Model Size**: ~278M parameters (based on e5-base)
- **Embedding Dimension**: 384
- **Max Sequence Length**: 128 tokens
- **Framework Compatibility**: 
  - PyTorch
  - Hugging Face Transformers
  - DeepSpeed

## Citation
```bibtex
@misc{armenian-text-embeddings-1,
  author = {Spartak Bughdaryan, Zaruhi Navasardyan, Bagrat Minasyan, Hrant Davtyan},
  title = {Armenian-Text-Embeddings-1: Enhanced Armenian Language Embeddings},
  year = {2024},
  howpublished = {\url{https://metric.am/blog/announcing-armenian-text-embeddings/}}
}
```

## Additional Information
### Base Model References
- multilingual-e5-base: [https://huggingface.co/intfloat/multilingual-e5-base](https://huggingface.co/intfloat/multilingual-e5-base)

### Acknowledgments
- intfloat for the original multilingual-e5-base model
- Reddit community for the source content
- DeepSpeed team for optimization toolkit

## Version History
- 2.0 (March 2026): **[ATE-2](https://huggingface.co/Metric-AI/armenian-text-embeddings-2-base)** — New open-source version with significantly improved performance. Acts as a drop-in replacement for v1 — no code changes required. Also available in a larger variant: [ATE-2-large](https://huggingface.co/Metric-AI/armenian-text-embeddings-2-large).
- 1.0.0 (November 2024): Initial release