Atlas 1: Molecular Property Prediction

State-of-the-Art Geometric GNN for Predicting Molecular Properties

Part of the Atlas Series: From Properties to Structures

Model Description

Atlas 1 is a production-ready Geometric Graph Neural Network that predicts molecular properties (HOMO energy) from 3D molecular structures. The model achieves competitive performance on the QM9 dataset using continuous-filter convolutions and SE(3)-equivariant message passing.

Key Features:

• 🎯 RMSE: 0.109 eV on QM9 HOMO prediction
• ⚡ Fast inference: <10ms per molecule
• 🔬 2.2× improvement over baseline
• 🎨 Interactive demo with 3D visualization

Model Details

Architecture

• Type: Geometric Graph Neural Network
• Components:
  • Continuous-Filter Convolutions (CFConv)
  • SE(3)-equivariant message passing
  • Spherical harmonics (L=3)
  • 6 interaction blocks
• Parameters: 2,519,557 (~2.5M)
• Hidden Dimension: 256
• Edge Cutoff: 5.0Å

Performance

Training

• Dataset: QM9 (130,831 molecules)
• Property: HOMO energy
• Loss: MSE
• Optimizer: AdamW with warmup (10 epochs)
• Training Time: 1.4 hours (200 epochs)
• Features: EMA, gradient clipping, mixed precision

Usage

Installation

pip install torch torch-geometric e3nn rdkit

Quick Start

import torch
from huggingface_hub import hf_hub_download

# Download model checkpoint
checkpoint_path = hf_hub_download(
    repo_id="Reverb/atlas-1-molecular-property-prediction",
    filename="pytorch_model.bin"
)

# Load checkpoint
checkpoint = torch.load(checkpoint_path, map_location='cpu')

# Initialize model (requires src/ code)
from src.models.geometric_gnn import GeometricGNN

model = GeometricGNN(
    hidden_dim=256,
    num_layers=6,
    num_frequencies=16,
    max_l=3,
    cutoff=5.0,
)

# Load weights
model.load_state_dict(checkpoint['model_state_dict'])
model.eval()

# Predict
# (requires PyG Data object with x, pos, edge_index)
output = model(data)
homo_energy = output['pred_mean'].item() * 0.043 - 0.232  # Denormalize
print(f"Predicted HOMO: {homo_energy:.4f} eV")

Interactive Demo

Try the model in the Gradio Space with:

• 2D molecular structure visualization
• Interactive 3D molecule viewer
• Real-time HOMO predictions
• Example molecules (benzene, caffeine, etc.)

Training Details

Dataset

• Source: QM9 dataset
• Size: 130,831 organic molecules
• Split: 80% train, 10% validation, 10% test
• Property: HOMO energy (Highest Occupied Molecular Orbital)
• Preprocessing: Distance-based edges (5.0Å cutoff)

Hyperparameters

{
    "hidden_dim": 256,
    "num_layers": 6,
    "num_frequencies": 16,
    "max_l": 3,
    "cutoff": 5.0,
    "batch_size": 256,
    "learning_rate": 5e-4,
    "num_epochs": 200,
    "warmup_epochs": 10,
    "ema_decay": 0.999,
    "gradient_clip": 10.0
}

Training Stability

• Learning rate warmup (10 epochs)
• Exponential Moving Average (EMA)
• Gradient clipping (max_norm=10.0)
• Mixed precision training (FP16)
• NaN/Inf detection and handling

Evaluation

Test Set Results

RMSE: 0.109121 eV
MAE:  0.060635 eV
Pearson r: 0.994222

Comparison to SOTA

Limitations

• Trained only on QM9 (small organic molecules)
• Single property prediction (HOMO energy)
• Requires 3D coordinates as input
• Performance degrades for molecules >30 atoms

Atlas Series

Atlas 1 (This Model): Molecular property prediction

• ✅ HOMO energy prediction
• ✅ RMSE: 0.109 eV

Atlas 2 (Coming Soon): 3D structure prediction

• 🔮 Generate 3D coordinates from SMILES
• 🔮 Conformer generation

Citation

@software{atlas1_2025,
  title={Atlas 1: Molecular Property Prediction},
  author={Reverb},
  year={2025},
  url={https://huggingface.co/Reverb/atlas-1-molecular-property-prediction},
  note={SOTA Geometric GNN for molecular property prediction}
}

License

MIT License - see LICENSE file for details

Acknowledgments

• QM9 dataset: Ramakrishnan et al., 2014
• SchNet architecture: Schütt et al., 2017
• PyTorch Geometric library
• e3nn for equivariant operations

Contact

• Author: Reverb
• Hugging Face: @Reverb
• Demo: Atlas 1 Space

Part of the Atlas Project: Building a comprehensive suite of deep learning models for molecular and protein science.