模板:ml/tabular_classification¶
源文件:examples/template_library/ml/tabular_classification.py
场景说明¶
表格分类模板。
场景说明:二分类/多分类任务的训练与验证骨架。
复制后最少需要改动:
1. 将 exp_fn 中的伪指标逻辑替换为真实训练/评测代码;
2. 调整 grid/variants 到你的参数空间;
3. 将产物写入 ctx.run_dir / "artifacts"。
一键复制起步¶
cp examples/template_library/ml/tabular_classification.py your_experiment.py
python your_experiment.py
模板代码¶
"""表格分类模板。
场景说明:二分类/多分类任务的训练与验证骨架。
复制后最少需要改动:
1. 将 `exp_fn` 中的伪指标逻辑替换为真实训练/评测代码;
2. 调整 `grid/variants` 到你的参数空间;
3. 将产物写入 `ctx.run_dir / "artifacts"`。
"""
from __future__ import annotations
import json
import random
import time
from pathlib import Path
from ztxexp import ExperimentPipeline, RunContext
def exp_fn(ctx: RunContext):
"""单次实验函数模板。"""
cfg = ctx.config
lr = float(cfg.get("lr", 0.001))
time.sleep(0.05 + random.random() * 0.05)
primary = 0.70 + random.random() * 0.25 - lr * 0.3
artifact = {
"run_id": ctx.run_id,
"config": cfg,
"note": "replace with your real training/evaluation outputs",
}
artifact_path = Path(ctx.run_dir) / "artifacts" / "summary.json"
artifact_path.write_text(json.dumps(artifact, ensure_ascii=False, indent=2), encoding="utf-8")
return {
"accuracy": round(primary, 4),
"f1": round(0.4 + random.random() * 0.55, 4),
}
if __name__ == "__main__":
pipeline = (
ExperimentPipeline(
results_root="./results_templates/tabular_classification",
base_config={'seed': 42, 'task': 'tabular_classification'},
)
.grid({'lr': [0.001, 0.01], 'batch_size': [32, 64]})
.variants([{'model': 'xgboost'}, {'model': 'mlp'}])
.exclude_completed()
)
summary = pipeline.run(
exp_fn,
mode="process_pool",
workers=2,
cpu_threshold=80,
)
print(summary)