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README.md
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#
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- 2025-
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- 2025-
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# ➤
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<div align="center">
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<img src="https://github.com/limix-ldm/LimiX/raw/main/doc/LimiX_Summary.png" alt="LimiX summary" width="89%">
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</div>
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# ➤
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## ➩ Classification
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<div align="center">
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<img src="https://github.com/limix-ldm/LimiX/raw/main/doc/Classifier.png" alt="Classification" width="80%">
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</div>
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## ➩
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<div align="center">
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<img src="https://github.com/limix-ldm/LimiX/raw/main/doc/Regression.png" alt="Regression" width="60%">
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</div>
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## ➩
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<div align="center">
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<img src="https://github.com/limix-ldm/LimiX/raw/main/doc/MissingValueImputation.png" alt="Missing value imputation" width="80%">
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</div>
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```bash
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docker build --network=host -t limix/infe:v1 --build-arg FROM_IMAGES=nvidia/cuda:12.2.0-base-ubuntu22.04 -f Dockerfile .
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```
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Download the prebuilt flash_attn files
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```bash
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wget -O flash_attn-2.8.0.post2+cu12torch2.7cxx11abiTRUE-cp312-cp312-linux_x86_64.whl https://github.com/Dao-AILab/flash-attention/releases/download/v2.8.0.post2/flash_attn-2.8.0.post2+cu12torch2.7cxx11abiTRUE-cp312-cp312-linux_x86_64.whl
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```
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```bash
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pip install python==3.12.7 torch==2.7.1 torchvision==0.22.1 torchaudio==2.7.1
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pip install flash_attn-2.8.0.post2+cu12torch2.7cxx11abiTRUE-cp312-cp312-linux_x86_64.whl
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pip install scikit-learn einops huggingface-hub matplotlib networkx numpy pandas scipy tqdm typing_extensions xgboost kditransform hyperopt
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```
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```
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# ➤ Inference
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LimiX supports tasks such as classification, regression, and missing value imputation
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## ➩ Model download
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| Model size | Download link | Tasks supported |
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| --- | --- | --- |
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## ➩ Interface description
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```python
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class LimiXPredictor:
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def __init__(self,
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inference_with_DDP: bool = False,
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seed:int=0)
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```
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|--------|----------|----------|
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| device | torch.device |
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| model_path | str |
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| mix_precision | bool |
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| inference_config | list/str |
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| categorical_features_indices | list |
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| outlier_remove_std | float |
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| softmax_temperature | float |
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| task_type | str |
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| mask_prediction | bool |
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| inference_with_DDP | bool |
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| seed | int |
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###
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```python
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def predict(self, x_train:np.ndarray, y_train:np.ndarray, x_test:np.ndarray) -> np.ndarray:
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```
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| ------- | ---------- | ----------------- |
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| x_train | np.ndarray |
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| y_train | np.ndarray |
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| x_test | np.ndarray |
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##
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| ------- | ---------- | ----- |
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| cls_default_retrieval.json |
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| cls_default_noretrieval.json |
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| reg_default_retrieval.json |
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| reg_default_noretrieval.json |
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| reg_default_noretrieval_MVI.json |
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## ➩
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Considering inference speed and memory requirements, ensemble inference based on sample retrieval currently only supports hardware with specifications higher than the NVIDIA RTX 4090 GPU.
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### Classification Task
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```
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python inference_classifier.py --save_name your_save_name --inference_config_path path_to_retrieval_config --data_dir path_to_data
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```
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###
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```
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python inference_regression.py --save_name your_save_name --inference_config_path path_to_retrieval_config --data_dir path_to_data
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```
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###
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####
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```python
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```
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###
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####
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```
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python inference_classifier.py --save_name your_save_name --inference_config_path path_to_retrieval_config --data_dir path_to_data
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```
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#### Multi-GPU Distributed Inference
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```
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torchrun --nproc_per_node=8 inference_classifier.py --save_name your_save_name --inference_config_path path_to_retrieval_config --data_dir path_to_data --inference_with_DDP
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```
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###
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####
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```
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python inference_regression.py --save_name your_save_name --inference_config_path path_to_retrieval_config --data_dir path_to_data
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```
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#### Multi-GPU Distributed Inference
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```
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torchrun --nproc_per_node=8 inference_regression.py --save_name your_save_name --inference_config_path path_to_retrieval_config --data_dir path_to_data --inference_with_DDP
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```
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###
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####
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Ensure you have the required dependencies installed:
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```
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pip install optuna
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```
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####
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```
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searchInference = RetrievalSearchHyperparameters(
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dict(device_id=0,model_path=model_path), X_train, y_train, X_test, y_test,
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)
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config, result = searchInference.search(
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```
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This will launch an Optuna study to find the best combination of retrieval parameters for your specific dataset and use case.
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## ➩
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```python
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from sklearn.datasets import load_breast_cancer
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from sklearn.metrics import accuracy_score, roc_auc_score
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print("roc_auc_score:", roc_auc_score(y_test, prediction[:, 1]))
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print("accuracy_score:", accuracy_score(y_test, np.argmax(prediction, axis=1)))
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```
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## ➩
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```python
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from functools import partial
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y_train_normalized = (y_train - y_mean) / y_std
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y_test_normalized = (y_test - y_mean) / y_std
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model_path = hf_hub_download(repo_id="stableai-org/LimiX-16M", filename="LimiX-16M.ckpt", local_dir="./cache")
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model = LimiXPredictor(device='cuda', model_path=model_path, inference_config='config/reg_default_retrieval.json')
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print(f'RMSE: {rmse}')
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print(f'R2: {r2}')
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```
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## ➩
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# ➤
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- LimiX
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- LimiX
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- Balance Comprehensive Challenging Omni-domain Regression Benchmark: [bcco_reg](https://huggingface.co/datasets/stableai-org/bcco_reg)
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# ➤
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# ➤
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```
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@article{LimiX,
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title={LimiX:Unleashing Structured-Data Modeling Capability for Generalist Intelligence},
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journal={arXiv preprint arXiv:2509.03505},
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year={2025}
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}
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```
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<div align="center">
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<img src="https://github.com/limix-ldm/LimiX/raw/main/doc/LimiX-Logo.png" alt="LimiX summary" width="89%">
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</div>
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# :boom: 最新进展
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- 2025-11-10: LimiX-2M 正式发布!与 LimiX-16M 相比,此版本在显著降低 GPU 内存占用的同时,实现了更快的推理速度。在此基础上,LimiX 的样本检索机制也得到了优化,模型的性能进一步提升,并有效减少了该模式下的推理时间与显存消耗
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- 2025-08-29: LimiX V1.0 发布
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# ⚡ 最新评测
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<div align="center">
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<img src="https://github.com/limix-ldm/LimiX/raw/main/doc/BCCO-CLS.png" width="30%">
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<img src="https://github.com/limix-ldm/LimiX/raw/main/doc/TabArena-CLS.png" width="30%">
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<img src="https://github.com/limix-ldm/LimiX/raw/main/doc/TabZilla-CLS.png" width="30%">
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</div>
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<div align="center">
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<img src="https://github.com/limix-ldm/LimiX/raw/main/doc/BCCO-REG.png" width="30%">
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<img src="https://github.com/limix-ldm/LimiX/raw/main/doc/TabArena-REG.png" width="30%">
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<img src="https://github.com/limix-ldm/LimiX/raw/main/doc/CTR23-REG.png" width="30%">
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</div>
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# ➤ 简介
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<div align="center">
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<img src="https://github.com/limix-ldm/LimiX/raw/main/doc/LimiX_Summary.png" alt="LimiX summary" width="89%">
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</div>
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我们推出 LDM 系列的首个模型—极数。极数的目标在于进一步提升通用性:在统一的训练与推理框架下,同时处理分类、回归、缺失值插补、特征选择、样本选择和因果推理等任务,从而推动表格学习从定制化流程迈向基础模型范式的转变。
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极数基于专为结构化数据建模和任务泛化优化的 Transformer 架构。 模型首先将先验知识库中的特征 𝑋 与目标 𝑌 映射为 token 表示。在核心模块中,注意力机制同时作用于样本维度和特征维度,以捕捉关键样本与特征的显著模式。随后,高维表示被送入回归与分类模块,从而支持多种任务的输出。
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技术报告详见:[LimiX:Unleashing Structured-Data Modeling Capability for Generalist Intelligence](https://arxiv.org/abs/2509.03505) / [LimiX_Technical_Report.pdf](https://github.com/limix-ldm/LimiX/blob/main/LimiX_Technical_Report.pdf)
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# ➤ 对比测试
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LimiX模型在多个任务的测试中达到了当前最优性能.
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## ➩ 分类
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<div align="center">
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<img src="https://github.com/limix-ldm/LimiX/raw/main/doc/Classifier.png" alt="Classification" width="80%">
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</div>
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## ➩ 回归
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<div align="center">
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<img src="https://github.com/limix-ldm/LimiX/raw/main/doc/Regression.png" alt="Regression" width="60%">
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</div>
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## ➩ 缺失值插补
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<div align="center">
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<img src="https://github.com/limix-ldm/LimiX/raw/main/doc/MissingValueImputation.png" alt="Missing value imputation" width="80%">
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</div>
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# ➤ 教程
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## ➩ 安装
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### 方式1,使用Dockerfile (建议)
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下载[Dockerfile](https://github.com/limix-ldm/LimiX/blob/main/Dockerfile)
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```bash
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docker build --network=host -t limix/infe:v1 --build-arg FROM_IMAGES=nvidia/cuda:12.2.0-base-ubuntu22.04 -f Dockerfile .
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```
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### 方式2,自行构建环境
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下载 flash_attn 预编译文件
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```bash
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wget -O flash_attn-2.8.0.post2+cu12torch2.7cxx11abiTRUE-cp312-cp312-linux_x86_64.whl https://github.com/Dao-AILab/flash-attention/releases/download/v2.8.0.post2/flash_attn-2.8.0.post2+cu12torch2.7cxx11abiTRUE-cp312-cp312-linux_x86_64.whl
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```
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环境安装
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```bash
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pip install python==3.12.7 torch==2.7.1 torchvision==0.22.1 torchaudio==2.7.1
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pip install flash_attn-2.8.0.post2+cu12torch2.7cxx11abiTRUE-cp312-cp312-linux_x86_64.whl
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pip install scikit-learn einops huggingface-hub matplotlib networkx numpy pandas scipy tqdm typing_extensions xgboost kditransform hyperopt
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```
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# ➤ 推理任务
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LimiX支持分类、回归、缺失值插补等任务。
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## ➩ 模型下载
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| 模型尺寸 | 下载链接 | 支持的任务 |
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| --- | --- | --- |
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| LimiX-16M | [LimiX-16M.ckpt](https://huggingface.co/stableai-org/LimiX-16M/tree/main) | ✅ 分类 ✅回归 ✅缺失值插补 |
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| LimiX-2M | [LimiX-2M.ckpt](https://huggingface.co/stableai-org/LimiX-2M/tree/main) | ✅ 分类 ✅回归 ✅缺失值插补 |
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## ➩ 接口说明
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### 创建模型
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```python
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class LimiXPredictor:
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def __init__(self,
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inference_with_DDP: bool = False,
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seed:int=0)
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```
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| 参数名 | 数据类型 | 参数说明 |
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|--------|----------|----------|
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| device | torch.device | 运行模型的硬件 |
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| model_path | str | 需要加载的模型的路径 |
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| mix_precision | bool | 是否启动混合进度计算 |
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| inference_config | list/str | 推理使用的配置文件 |
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| categorical_features_indices | list | 数据表中,分类列的序号 |
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| outlier_remove_std | float | 移除异常值时采用的标准差倍数阈值 |
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| softmax_temperature | float | Softmax 温度 或 温度系数 |
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| task_type | str | 任务类型,取值范围为:Classification, Regression |
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| mask_prediction | bool | 是否启用缺失值插补功能 |
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| inference_with_DDP | bool | 在推理时是否开启DDP |
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| seed | int | 随机种子 |
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### 数据推理
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```python
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def predict(self, x_train:np.ndarray, y_train:np.ndarray, x_test:np.ndarray) -> np.ndarray:
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```
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| 参数名 | 数据类型 | 参数说明 |
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| ------- | ---------- | ----------------- |
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| x_train | np.ndarray | 训练集的 feature |
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| y_train | np.ndarray | 训练集的预测目标 |
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| x_test | np.ndarray | 测试集的 feature |
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## ➩ 推理配置文件说明
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| 配置文件名称 | 配置文件说明 | 差异 |
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| ------- | ---------- | ----- |
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| cls_default_retrieval.json | 默认的**含有retrieval**功能的**分类任务**推理配置文件 | 分类性能更好 |
|
| 120 |
+
| cls_default_noretrieval.json | 默认的**不含有retrieval**功能的**分类任务**推理配置文件 | 速度更快、显存需求更低 |
|
| 121 |
+
| reg_default_retrieval.json | 默认的**含有retrieval**功能的**回归任务**推理配置文件 | 回归性能更好 |
|
| 122 |
+
| reg_default_noretrieval.json | 默认的**不含有retrieval**功能的**回归任务**推理配置文件 | 速度更快、显存需求更低 |
|
| 123 |
+
| reg_default_noretrieval_MVI.json | 默认的**缺失值插补**任务推理配置文件 | |
|
| 124 |
+
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+
## ➩ 基于样本检索的ensemble推理
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+
基于样本检索的ensemble推理的详细技术描述详见[LimiX技术报告](https://github.com/limix-ldm/LimiX/blob/main/LimiX_Technical_Report.pdf)
|
| 127 |
+
考虑到推理速度、显存占用,基于样本检索的ensemble推理目前只支持基于版本高于NVIDIA-RTX 4090显卡的硬件条件。
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| 128 |
+
### 分类任务
|
|
|
|
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|
|
|
|
|
|
|
| 129 |
```
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| 130 |
python inference_classifier.py --save_name your_save_name --inference_config_path path_to_retrieval_config --data_dir path_to_data
|
| 131 |
```
|
| 132 |
|
| 133 |
+
### 回归任务
|
|
|
|
| 134 |
```
|
| 135 |
python inference_regression.py --save_name your_save_name --inference_config_path path_to_retrieval_config --data_dir path_to_data
|
| 136 |
```
|
| 137 |
|
| 138 |
+
### 个性化设置推理任务的数据预处理方式
|
| 139 |
+
#### 首先生成inference_config文件
|
|
|
|
| 140 |
```python
|
| 141 |
+
generate_infenerce_config()
|
| 142 |
```
|
| 143 |
|
| 144 |
+
### 分类任务
|
| 145 |
+
#### 单卡或者CPU
|
|
|
|
| 146 |
```
|
| 147 |
python inference_classifier.py --save_name your_save_name --inference_config_path path_to_retrieval_config --data_dir path_to_data
|
| 148 |
```
|
| 149 |
+
#### 多卡分布式推理
|
|
|
|
|
|
|
| 150 |
```
|
| 151 |
torchrun --nproc_per_node=8 inference_classifier.py --save_name your_save_name --inference_config_path path_to_retrieval_config --data_dir path_to_data --inference_with_DDP
|
| 152 |
```
|
| 153 |
|
| 154 |
+
### 回归任务
|
| 155 |
+
#### 单卡或者CPU
|
|
|
|
| 156 |
```
|
| 157 |
python inference_regression.py --save_name your_save_name --inference_config_path path_to_retrieval_config --data_dir path_to_data
|
| 158 |
```
|
| 159 |
+
#### 多卡分布式推理
|
|
|
|
|
|
|
| 160 |
```
|
| 161 |
torchrun --nproc_per_node=8 inference_regression.py --save_name your_save_name --inference_config_path path_to_retrieval_config --data_dir path_to_data --inference_with_DDP
|
| 162 |
```
|
| 163 |
|
| 164 |
+
### 样本检索的超参检索
|
| 165 |
+
本项目提供了一个样本检测的超参搜索套件。为了获得最佳性能,我们使用 Optuna 对检索参数进行超参数优化
|
| 166 |
+
#### 安装
|
|
|
|
| 167 |
```
|
| 168 |
pip install optuna
|
| 169 |
```
|
| 170 |
+
#### 使用方法
|
| 171 |
+
若要使用超参数优化进行标准推理,请参考如下代码,这段代码将启动一个 Optuna 搜索,用于为特定数据集和应用场景寻找最佳的检索参数组合:
|
| 172 |
```
|
| 173 |
searchInference = RetrievalSearchHyperparameters(
|
| 174 |
+
dict(device_id=0, model_path=model_path), X_train, y_train, X_test, y_test,
|
| 175 |
)
|
| 176 |
+
config, result = searchInference.search(
|
| 177 |
+
n_trials=10, metric="AUC",
|
| 178 |
+
inference_config='config/cls_default_retrieval.json',
|
| 179 |
+
task_type="cls")
|
| 180 |
```
|
|
|
|
| 181 |
|
| 182 |
+
## ➩ 分类
|
| 183 |
+
|
| 184 |
```python
|
| 185 |
from sklearn.datasets import load_breast_cancer
|
| 186 |
from sklearn.metrics import accuracy_score, roc_auc_score
|
|
|
|
| 210 |
print("roc_auc_score:", roc_auc_score(y_test, prediction[:, 1]))
|
| 211 |
print("accuracy_score:", accuracy_score(y_test, np.argmax(prediction, axis=1)))
|
| 212 |
```
|
| 213 |
+
更加详细的样例详见: [inference_classifier.py](./inference_classifier.py)
|
| 214 |
|
| 215 |
+
## ➩ 回归
|
| 216 |
```python
|
| 217 |
from functools import partial
|
| 218 |
|
|
|
|
| 246 |
y_train_normalized = (y_train - y_mean) / y_std
|
| 247 |
y_test_normalized = (y_test - y_mean) / y_std
|
| 248 |
|
| 249 |
+
data_device = f'cuda:0'
|
| 250 |
model_path = hf_hub_download(repo_id="stableai-org/LimiX-16M", filename="LimiX-16M.ckpt", local_dir="./cache")
|
| 251 |
|
| 252 |
model = LimiXPredictor(device='cuda', model_path=model_path, inference_config='config/reg_default_retrieval.json')
|
|
|
|
| 260 |
print(f'RMSE: {rmse}')
|
| 261 |
print(f'R2: {r2}')
|
| 262 |
```
|
| 263 |
+
更加详细的样例详见: [inference_regression.py](./inference_regression.py)
|
| 264 |
|
| 265 |
+
## ➩ 缺失值插补
|
| 266 |
+
样例详见: [examples/demo_missing_value_imputation.py](examples/inference_regression.py)
|
| 267 |
|
| 268 |
+
# ➤ 链接
|
| 269 |
+
- LimiX(极数):结构化数据通用大模型:[LimiX:Unleashing Structured-Data Modeling Capability for Generalist Intelligence](https://arxiv.org/abs/2509.03505)
|
| 270 |
+
- LimiX技术报告:[LimiX_Technical_Report.pdf](https://github.com/limix-ldm/LimiX/blob/main/LimiX_Technical_Report.pdf)
|
| 271 |
+
- 平衡、全面、有挑战、跨领域的分类数据集:[bcco_cls](https://huggingface.co/datasets/stableai-org/bcco_cls)
|
| 272 |
+
- 平衡、全面、有挑战、跨领域的回归数据集:[bcco_reg](https://huggingface.co/datasets/stableai-org/bcco_reg)
|
|
|
|
| 273 |
|
| 274 |
+
# ➤ 协议
|
| 275 |
+
本仓库的代码依照 [Apache-2.0](LICENSE.txt) 协议开源,LimiX 模型的权重的使用则需要遵循 Model License。LimiX 权重对学术研究完全开放,在进行授权后允许商业使用。
|
| 276 |
|
| 277 |
+
# ➤ 引用
|
| 278 |
```
|
| 279 |
@article{LimiX,
|
| 280 |
title={LimiX:Unleashing Structured-Data Modeling Capability for Generalist Intelligence},
|
|
|
|
| 282 |
journal={arXiv preprint arXiv:2509.03505},
|
| 283 |
year={2025}
|
| 284 |
}
|
| 285 |
+
```
|