bert-osmosis-coverage

BERT Coverage Assessment Model

🎯 A domain-agnostic BERT model for assessing educational conversation coverage

Model Description

This model fine-tunes BERT for educational coverage assessment, predicting how well student conversations address learning objectives. It achieves 0.865 Pearson correlation with coverage assessments, making it suitable for real-time educational applications.

Key Features

• 🌍 Domain-agnostic: Works across subjects without retraining
• 📊 Continuous scoring: Outputs 0.0-1.0 coverage scores
• ⚡ Real-time capable: Fast inference for live systems
• 🎓 Research-validated: Exceeds academic benchmarks

Performance

Usage

from transformers import AutoTokenizer
import torch
import torch.nn as nn
from transformers import AutoModel

class BERTCoverageRegressor(nn.Module):
    def __init__(self, model_name='bert-base-uncased', dropout_rate=0.3):
        super(BERTCoverageRegressor, self).__init__()
        self.bert = AutoModel.from_pretrained(model_name)
        self.dropout = nn.Dropout(dropout_rate)
        self.regressor = nn.Linear(self.bert.config.hidden_size, 1)
        
    def forward(self, input_ids, attention_mask):
        outputs = self.bert(input_ids=input_ids, attention_mask=attention_mask)
        pooled_output = outputs.pooler_output
        output = self.dropout(pooled_output)
        return self.regressor(output)

# Load model and tokenizer
tokenizer = AutoTokenizer.from_pretrained('KingTechnician/bert-osmosis-coverage')
model = BERTCoverageRegressor()

# Load the fine-tuned weights
model_path = "pytorch_model.bin"  # Download from repo
model.load_state_dict(torch.load(model_path, map_location='cpu'))
model.eval()

# Make prediction
def predict_coverage(objective, conversation, max_length=512):
    encoding = tokenizer(
        objective,
        conversation,
        truncation=True,
        padding='max_length',
        max_length=max_length,
        return_tensors='pt'
    )
    
    with torch.no_grad():
        output = model(encoding['input_ids'], encoding['attention_mask'])
        score = torch.clamp(output.squeeze(), 0.0, 1.0).item()
    
    return score

# Example usage
objective = "Understand the process of photosynthesis"
conversation = "Student explains light reactions and Calvin cycle with examples..."
coverage_score = predict_coverage(objective, conversation)
print(f"Coverage Score: {coverage_score:.3f}")

Input Format

The model expects input in the format:

[CLS] learning_objective [SEP] student_conversation [SEP]

Output

Returns a continuous score between 0.0 and 1.0:

• 0.0-0.2: Minimal coverage
• 0.3-0.4: Low coverage
• 0.5-0.6: Moderate coverage
• 0.7-0.8: High coverage
• 0.9-1.0: Complete coverage

Training Data

Trained on synthetic educational conversations across multiple domains:

• Computer Science (algorithms, data structures)
• Statistics (hypothesis testing, regression)
• Multi-domain conversations

Research Background

This model implements the methodology from research on domain-agnostic educational assessment, achieving significant improvements over traditional similarity-based approaches:

• 269% improvement over baseline similarity features
• Domain transfer capability without retraining
• Real-time processing under 100ms per assessment

Limitations

• Trained primarily on synthetic data (validation on real conversations recommended)
• Optimized for English language conversations
• Performance may vary for highly specialized technical domains

Citation

If you use this model in your research, please cite:

@misc{bert-coverage-assessment,
  title={Domain-Agnostic Coverage Assessment Through BERT Fine-tuning},
  author={Your Name},
  year={2025},
  url={https://huggingface.co/KingTechnician/bert-osmosis-coverage}
}

Contact

For questions or collaborations, please open an issue in the model repository.

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Model Type: Educational AI | Task: Coverage Assessment | Performance: r=0.865