README.md
| 1 | --- |
| 2 | license: apache-2.0 |
| 3 | pipeline_tag: tabular-classification |
| 4 | --- |
| 5 | |
| 6 | # Mitra Classifier |
| 7 | |
| 8 | Mitra classifier is a tabular foundation model that is pre-trained on purely synthetic datasets sampled from a mix of random classifiers. |
| 9 | |
| 10 | ## Architecture |
| 11 | |
| 12 | Mitra is based on a 12-layer Transformer of 72 M parameters, pre-trained by incorporating an in-context learning paradigm. |
| 13 | |
| 14 | ## Usage |
| 15 | |
| 16 | To use Mitra classifier, install AutoGluon by running: |
| 17 | |
| 18 | ```sh |
| 19 | pip install uv |
| 20 | uv pip install autogluon.tabular[mitra] |
| 21 | ``` |
| 22 | |
| 23 | A minimal example showing how to perform inference using the Mitra classifier: |
| 24 | |
| 25 | ```python |
| 26 | import pandas as pd |
| 27 | from autogluon.tabular import TabularDataset, TabularPredictor |
| 28 | from sklearn.model_selection import train_test_split |
| 29 | from sklearn.datasets import load_wine |
| 30 | |
| 31 | # Load datasets |
| 32 | wine_data = load_wine() |
| 33 | wine_df = pd.DataFrame(wine_data.data, columns=wine_data.feature_names) |
| 34 | wine_df['target'] = wine_data.target |
| 35 | |
| 36 | print("Dataset shapes:") |
| 37 | print(f"Wine: {wine_df.shape}") |
| 38 | |
| 39 | # Create train/test splits (80/20) |
| 40 | wine_train, wine_test = train_test_split(wine_df, test_size=0.2, random_state=42, stratify=wine_df['target']) |
| 41 | |
| 42 | print("Training set sizes:") |
| 43 | print(f"Wine: {len(wine_train)} samples") |
| 44 | |
| 45 | # Convert to TabularDataset |
| 46 | wine_train_data = TabularDataset(wine_train) |
| 47 | wine_test_data = TabularDataset(wine_test) |
| 48 | |
| 49 | # Create predictor with Mitra |
| 50 | print("Training Mitra classifier on classification dataset...") |
| 51 | mitra_predictor = TabularPredictor(label='target') |
| 52 | mitra_predictor.fit( |
| 53 | wine_train_data, |
| 54 | hyperparameters={ |
| 55 | 'MITRA': {'fine_tune': False} |
| 56 | }, |
| 57 | ) |
| 58 | |
| 59 | print("\nMitra training completed!") |
| 60 | |
| 61 | # Make predictions |
| 62 | mitra_predictions = mitra_predictor.predict(wine_test_data) |
| 63 | print("Sample Mitra predictions:") |
| 64 | print(mitra_predictions.head(10)) |
| 65 | |
| 66 | # Show prediction probabilities for first few samples |
| 67 | mitra_predictions = mitra_predictor.predict_proba(wine_test_data) |
| 68 | print(mitra_predictions.head()) |
| 69 | |
| 70 | # Show model leaderboard |
| 71 | print("\nMitra Model Leaderboard:") |
| 72 | mitra_predictor.leaderboard(wine_test_data) |
| 73 | ``` |
| 74 | |
| 75 | A minimal example showing how to perform fine-tuning using the Mitra classifier: |
| 76 | |
| 77 | ```python |
| 78 | mitra_predictor_ft = TabularPredictor(label='target') |
| 79 | mitra_predictor_ft.fit( |
| 80 | wine_train_data, |
| 81 | hyperparameters={ |
| 82 | 'MITRA': {'fine_tune': True, 'fine_tune_steps': 10} |
| 83 | }, |
| 84 | time_limit=120, # 2 minutes |
| 85 | ) |
| 86 | |
| 87 | print("\nMitra fine-tuning completed!") |
| 88 | |
| 89 | # Show model leaderboard |
| 90 | print("\nMitra Model Leaderboard:") |
| 91 | mitra_predictor_ft.leaderboard(wine_test_data) |
| 92 | ``` |
| 93 | |
| 94 | ## License |
| 95 | |
| 96 | This project is licensed under the Apache-2.0 License. |
| 97 | |
| 98 | ## Reference |
| 99 | |
| 100 | ``` |
| 101 | @article{zhang2025mitra, |
| 102 | title={Mitra: Mixed synthetic priors for enhancing tabular foundation models}, |
| 103 | author={Zhang, Xiyuan and Maddix, Danielle C and Yin, Junming and Erickson, Nick and Ansari, Abdul Fatir and Han, Boran and Zhang, Shuai and Akoglu, Leman and Faloutsos, Christos and Mahoney, Michael W and others}, |
| 104 | journal={arXiv preprint arXiv:2510.21204}, |
| 105 | year={2025} |
| 106 | } |
| 107 | ``` |
| 108 | |
| 109 | Amazon Science blog: [Mitra: Mixed synthetic priors for enhancing tabular foundation models](https://www.amazon.science/blog/mitra-mixed-synthetic-priors-for-enhancing-tabular-foundation-models?utm_campaign=mitra-mixed-synthetic-priors-for-enhancing-tabular-foundation-models&utm_medium=organic-asw&utm_source=linkedin&utm_content=2025-7-22-mitra-mixed-synthetic-priors-for-enhancing-tabular-foundation-models&utm_term=2025-july) |