1151 lines
43 KiB
Python
1151 lines
43 KiB
Python
import numpy as np
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import pandas as pd
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import joblib
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import os
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from pathlib import Path
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from typing import List, Dict, Union, Tuple, Optional
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import warnings
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warnings.filterwarnings('ignore')
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# 导入预处理模块 - 动态添加路径支持
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import sys
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import os
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from src.preprocessing.spectral_Preprocessing import Preprocessing
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# try:
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# from modeling import WaterQualityModeling
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# except ImportError:
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# from src.core.modeling.modeling_batch import WaterQualityModeling
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# 机器学习相关导入
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from sklearn.model_selection import train_test_split
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class WaterQualityInference:
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"""水质参数反演推理类"""
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def __init__(self, artifacts_dir: str = "models/artifacts"):
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"""
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初始化推理类
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Args:
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artifacts_dir: 模型保存目录
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"""
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self.artifacts_dir = Path(artifacts_dir)
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if not self.artifacts_dir.exists():
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print(f"警告: 模型目录不存在: {artifacts_dir}，将在需要时创建")
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self.best_model_info = None
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self.loaded_model_data = None
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def load_sampling_data(self, csv_path: str) -> Tuple[pd.DataFrame, pd.DataFrame]:
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"""
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加载sampling生成的CSV数据
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Args:
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csv_path: CSV文件路径，前两列为经纬度，其余列为光谱数据
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Returns:
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coords: 经纬度数据 (DataFrame)
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spectra: 光谱数据 (DataFrame)
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"""
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print(f"正在加载采样数据: {csv_path}")
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if not os.path.exists(csv_path):
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raise FileNotFoundError(f"采样数据文件不存在: {csv_path}")
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# 读取CSV文件
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data = pd.read_csv(csv_path)
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print(f"采样数据加载完成:")
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print(f" 数据形状: {data.shape}")
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print(f" 列名: {list(data.columns[:5])}...") # 只显示前5列
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# 检查数据列数
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if data.shape[1] < 4:
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raise ValueError(f"数据列数不足，期望至少4列（经度、纬度、其他列、光谱数据），实际得到{data.shape[1]}列")
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# 前两列为经纬度
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coords = data.iloc[:, :2].copy()
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coords.columns = ['longitude', 'latitude']
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# 从第5列开始为光谱数据（跳过第2、3、4列的其他信息）
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spectra = data.iloc[:, 4:].copy()
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print(f" 经纬度数据形状: {coords.shape}")
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print(f" 光谱数据形状: {spectra.shape}")
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print(f" 经纬度范围: 经度[{coords['longitude'].min():.6f}, {coords['longitude'].max():.6f}], "
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f"纬度[{coords['latitude'].min():.6f}, {coords['latitude'].max():.6f}]")
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return coords, spectra
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def random(self, data, label, test_ratio=0.2, random_state=123):
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"""
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随机划分数据集
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Args:
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data: shape (n_samples, n_features)
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label: shape (n_sample, )
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test_ratio: 测试集比例，默认: 0.2
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random_state: 随机种子，默认: 123
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Returns:
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X_train: (n_samples, n_features)
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X_test: (n_samples, n_features)
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y_train: (n_sample, )
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y_test: (n_sample, )
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"""
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X_train, X_test, y_train, y_test = train_test_split(
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data, label, test_size=test_ratio, random_state=random_state
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)
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return X_train, X_test, y_train, y_test
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def spxy(self, data, label, test_size=0.2):
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"""
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SPXY算法划分数据集（考虑X和Y空间的距离）
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Args:
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data: shape (n_samples, n_features)
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label: shape (n_samples, )
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test_size: 测试集比例，默认: 0.2
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Returns:
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X_train: (n_samples, n_features)
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X_test: (n_samples, n_features)
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y_train: (n_samples, )
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y_test: (n_samples, )
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"""
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# 确保 data 和 label 是 NumPy 数组
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data = data.to_numpy() if isinstance(data, pd.DataFrame) else data
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label = label.to_numpy() if isinstance(label, pd.Series) else label
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# 备份原始数据和标签
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x_backup = data
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y_backup = label
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M = data.shape[0]
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N = round((1 - test_size) * M)
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samples = np.arange(M)
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# 归一化标签数据
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label = (label - np.mean(label)) / np.std(label)
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D = np.zeros((M, M))
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Dy = np.zeros((M, M))
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# 计算样本之间的距离
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for i in range(M - 1):
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xa = data[i, :]
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ya = label[i]
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for j in range((i + 1), M):
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xb = data[j, :]
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yb = label[j]
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D[i, j] = np.linalg.norm(xa - xb)
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Dy[i, j] = np.linalg.norm(ya - yb)
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# 距离归一化
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Dmax = np.max(D)
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Dymax = np.max(Dy)
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D = D / Dmax + Dy / Dymax
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# 找到最远的两个点
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maxD = D.max(axis=0)
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index_row = D.argmax(axis=0)
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index_column = maxD.argmax()
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m = np.zeros(N, dtype=int)
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m[0] = index_row[index_column]
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m[1] = index_column
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dminmax = np.zeros(N)
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dminmax[1] = D[m[0], m[1]]
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# 根据距离选择训练集
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for i in range(2, N):
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pool = np.delete(samples, m[:i])
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dmin = np.zeros(M - i)
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for j in range(M - i):
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indexa = pool[j]
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d = np.zeros(i)
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for k in range(i):
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indexb = m[k]
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if indexa < indexb:
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d[k] = D[indexa, indexb]
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else:
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d[k] = D[indexb, indexa]
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dmin[j] = np.min(d)
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dminmax[i] = np.max(dmin)
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index = np.argmax(dmin)
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m[i] = pool[index]
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m_complement = np.delete(samples, m)
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# 划分训练集和测试集
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X_train = data[m, :]
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y_train = y_backup[m]
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X_test = data[m_complement, :]
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y_test = y_backup[m_complement]
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return X_train, X_test, y_train, y_test
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def ks(self, data, label, test_size=0.2):
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"""
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Kennard-Stone算法划分数据集
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Args:
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data: shape (n_samples, n_features)
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label: shape (n_sample, )
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test_size: 测试集比例，默认: 0.2
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Returns:
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X_train: (n_samples, n_features)
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X_test: (n_samples, n_features)
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y_train: (n_samples, )
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y_test: (n_samples, )
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"""
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# 确保 data 和 label 是 NumPy 数组
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data = data.to_numpy() if isinstance(data, pd.DataFrame) else data
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label = label.to_numpy() if isinstance(label, pd.Series) else label
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M = data.shape[0]
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N = round((1 - test_size) * M)
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samples = np.arange(M)
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D = np.zeros((M, M))
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for i in range((M - 1)):
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xa = data[i, :]
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for j in range((i + 1), M):
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xb = data[j, :]
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D[i, j] = np.linalg.norm(xa - xb)
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maxD = np.max(D, axis=0)
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index_row = np.argmax(D, axis=0)
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index_column = np.argmax(maxD)
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m = np.zeros(N)
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m[0] = np.array(index_row[index_column])
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m[1] = np.array(index_column)
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m = m.astype(int)
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dminmax = np.zeros(N)
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dminmax[1] = D[m[0], m[1]]
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for i in range(2, N):
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pool = np.delete(samples, m[:i])
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dmin = np.zeros((M - i))
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for j in range((M - i)):
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indexa = pool[j]
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d = np.zeros(i)
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for k in range(i):
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indexb = m[k]
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if indexa < indexb:
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d[k] = D[indexa, indexb]
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else:
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d[k] = D[indexb, indexa]
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dmin[j] = np.min(d)
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dminmax[i] = np.max(dmin)
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index = np.argmax(dmin)
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m[i] = pool[index]
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m_complement = np.delete(np.arange(data.shape[0]), m)
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X_train = data[m, :]
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y_train = label[m]
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X_test = data[m_complement, :]
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y_test = label[m_complement]
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return X_train, X_test, y_train, y_test
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def split_data(self, X: np.ndarray, y: pd.Series, method: str = "random",
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test_size: float = 0.2, random_state: int = 42) -> Tuple[np.ndarray, np.ndarray, np.ndarray, np.ndarray]:
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"""
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根据指定方法划分数据集
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Args:
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X: 特征数据
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y: 目标值数据
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method: 划分方法 ("random", "spxy", "ks")
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test_size: 测试集比例
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random_state: 随机种子（仅对random方法有效）
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Returns:
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X_train, X_test, y_train, y_test
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"""
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print(f"使用 {method} 方法划分数据集")
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if method == "random":
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return self.random(X, y, test_ratio=test_size, random_state=random_state)
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elif method == "spxy":
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return self.spxy(X, y, test_size=test_size)
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elif method == "ks":
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return self.ks(X, y, test_size=test_size)
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else:
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raise ValueError(f"不支持的划分方法: {method}. 支持的方法: ['random', 'spxy', 'ks']")
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def get_best_model_from_summary(self, metric: str = 'test_r2') -> Tuple[str, str]:
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"""
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从训练摘要中获取最佳模型信息
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Args:
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metric: 评估指标（默认使用test_r2，回归任务的主要指标）
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Returns:
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preprocess_method: 预处理方法
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model_name: 模型名称
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"""
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# 获取当前artifacts_dir的文件夹名称（用作目标列名）
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folder_name = self.artifacts_dir.name
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# 尝试加载详细结果文件（使用新的命名格式）
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detailed_path = self.artifacts_dir / f"{folder_name}_detailed_results.csv"
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summary_path = self.artifacts_dir / f"{folder_name}_training_summary.csv"
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# 备用的旧格式文件路径
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old_detailed_path = self.artifacts_dir / "detailed_results.csv"
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old_summary_path = self.artifacts_dir / "training_summary.csv"
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summary_df = None
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# 优先使用新格式的详细结果文件
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if detailed_path.exists():
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print(f"使用详细结果文件: {detailed_path}")
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summary_df = pd.read_csv(detailed_path)
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# 将中文列名映射到英文
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metric_mapping = {
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'test_r2': '测试集R²',
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'train_r2': '训练集R²',
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'test_rmse': '测试集RMSE',
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'train_rmse': '训练集RMSE',
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'cv_mean': 'CV均值'
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}
|
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if metric in metric_mapping and metric_mapping[metric] in summary_df.columns:
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metric_col = metric_mapping[metric]
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else:
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metric_col = metric
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elif summary_path.exists():
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print(f"使用训练摘要文件: {summary_path}")
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summary_df = pd.read_csv(summary_path)
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metric_col = metric
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elif old_detailed_path.exists():
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print(f"使用旧格式详细结果文件: {old_detailed_path}")
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summary_df = pd.read_csv(old_detailed_path)
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# 将中文列名映射到英文
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||
metric_mapping = {
|
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'test_r2': '测试集R²',
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'train_r2': '训练集R²',
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||
'test_rmse': '测试集RMSE',
|
||
'train_rmse': '训练集RMSE',
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||
'cv_mean': 'CV均值'
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||
}
|
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if metric in metric_mapping and metric_mapping[metric] in summary_df.columns:
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metric_col = metric_mapping[metric]
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else:
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metric_col = metric
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elif old_summary_path.exists():
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print(f"使用旧格式训练摘要文件: {old_summary_path}")
|
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summary_df = pd.read_csv(old_summary_path)
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metric_col = metric
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else:
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raise FileNotFoundError(f"训练摘要文件不存在，尝试的路径:\n"
|
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f" - {detailed_path}\n"
|
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f" - {summary_path}\n"
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||
f" - {old_detailed_path}\n"
|
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f" - {old_summary_path}")
|
||
|
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if summary_df.empty:
|
||
raise ValueError("训练摘要为空")
|
||
|
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# 检查指标列是否存在
|
||
if metric_col not in summary_df.columns:
|
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available_cols = list(summary_df.columns)
|
||
raise ValueError(f"指标 '{metric_col}' 不存在。可用列: {available_cols}")
|
||
|
||
# 获取最佳模型（对于R²等指标，值越大越好）
|
||
if 'r2' in metric.lower() or 'score' in metric.lower():
|
||
best_idx = summary_df[metric_col].idxmax()
|
||
else: # 对于RMSE、MAE等，值越小越好
|
||
best_idx = summary_df[metric_col].idxmin()
|
||
|
||
best_row = summary_df.loc[best_idx]
|
||
|
||
# 根据文件类型解析模型信息
|
||
if (detailed_path.exists() or old_detailed_path.exists()) and '划分方法' in summary_df.columns:
|
||
# 详细结果文件格式
|
||
split_method = best_row['划分方法']
|
||
preprocess_method = best_row['预处理方法']
|
||
model_name = best_row['建模方法']
|
||
|
||
# 处理 nan/NaN/None 值，转换为 "None" 字符串
|
||
if pd.isna(preprocess_method) or str(preprocess_method).lower() in ['nan', 'none', '']:
|
||
preprocess_method = "None"
|
||
|
||
best_combination = f"{split_method}_{preprocess_method}_{model_name}"
|
||
else:
|
||
# 简化结果文件格式
|
||
best_combination = best_row['combination']
|
||
# 解析组合名称（格式: split_method_preprocess_method_model_name）
|
||
parts = best_combination.split('_')
|
||
if len(parts) < 3:
|
||
raise ValueError(f"无效的模型组合名称格式: {best_combination}")
|
||
|
||
split_method = parts[0]
|
||
preprocess_method = parts[1]
|
||
model_name = '_'.join(parts[2:])
|
||
|
||
# 处理 nan/NaN/None 值，转换为 "None" 字符串
|
||
if pd.isna(preprocess_method) or str(preprocess_method).lower() in ['nan', 'none', '']:
|
||
preprocess_method = "None"
|
||
|
||
print(f"最佳模型组合: {best_combination}")
|
||
print(f" 划分方法: {split_method}")
|
||
print(f" 预处理方法: {preprocess_method}")
|
||
print(f" 模型名称: {model_name}")
|
||
print(f" {metric_col}: {best_row[metric_col]:.4f}")
|
||
|
||
self.best_model_info = {
|
||
'combination': best_combination,
|
||
'split_method': split_method,
|
||
'preprocess_method': preprocess_method,
|
||
'model_name': model_name,
|
||
'metric_value': best_row[metric_col]
|
||
}
|
||
|
||
# 返回用于加载模型的文件名格式
|
||
model_file_prefix = f"{split_method}_{preprocess_method}"
|
||
return model_file_prefix, model_name
|
||
|
||
def load_best_model(self, metric: str = 'test_r2'):
|
||
"""
|
||
加载最佳模型
|
||
|
||
Args:
|
||
metric: 评估指标
|
||
"""
|
||
model_file_prefix, model_name = self.get_best_model_from_summary(metric)
|
||
|
||
# 获取当前artifacts_dir的文件夹名称（用作目标列名）
|
||
folder_name = self.artifacts_dir.name
|
||
|
||
# 构建模型文件路径（新格式：包含目标列名）
|
||
filename = f"{folder_name}_{model_file_prefix}_{model_name}.joblib"
|
||
filepath = self.artifacts_dir / filename
|
||
|
||
# 如果新格式文件不存在，尝试旧格式
|
||
if not filepath.exists():
|
||
old_filename = f"{model_file_prefix}_{model_name}.joblib"
|
||
old_filepath = self.artifacts_dir / old_filename
|
||
if old_filepath.exists():
|
||
filepath = old_filepath
|
||
filename = old_filename
|
||
print(f"使用旧格式模型文件: {filepath}")
|
||
else:
|
||
raise FileNotFoundError(f"模型文件不存在，尝试的路径:\n"
|
||
f" - {filepath}\n"
|
||
f" - {old_filepath}")
|
||
else:
|
||
print(f"使用新格式模型文件: {filepath}")
|
||
|
||
print(f"正在加载模型: {filepath}")
|
||
|
||
# 加载模型数据
|
||
self.loaded_model_data = joblib.load(filepath)
|
||
|
||
print("模型加载完成:")
|
||
print(f" 预处理方法: {self.loaded_model_data['preprocess_method']}")
|
||
print(f" 模型名称: {self.loaded_model_data['model_name']}")
|
||
print(f" 模型类型: {type(self.loaded_model_data['model'])}")
|
||
|
||
if 'metadata' in self.loaded_model_data:
|
||
metadata = self.loaded_model_data['metadata']
|
||
print(f" 数据形状: {metadata.get('data_shape', 'Unknown')}")
|
||
print(f" 目标范围: {metadata.get('target_range', 'Unknown')}")
|
||
if 'test_r2' in metadata:
|
||
print(f" 测试集R²: {metadata['test_r2']:.4f}")
|
||
if 'test_rmse' in metadata:
|
||
print(f" 测试集RMSE: {metadata['test_rmse']:.4f}")
|
||
|
||
def load_specific_model(self, model_file_path: str):
|
||
"""
|
||
加载指定的模型文件
|
||
|
||
Args:
|
||
model_file_path: 模型文件路径
|
||
"""
|
||
if not os.path.exists(model_file_path):
|
||
raise FileNotFoundError(f"模型文件不存在: {model_file_path}")
|
||
|
||
print(f"正在加载指定模型: {model_file_path}")
|
||
|
||
# 加载模型数据
|
||
self.loaded_model_data = joblib.load(model_file_path)
|
||
|
||
print("模型加载完成:")
|
||
print(f" 预处理方法: {self.loaded_model_data['preprocess_method']}")
|
||
print(f" 模型名称: {self.loaded_model_data['model_name']}")
|
||
print(f" 模型类型: {type(self.loaded_model_data['model'])}")
|
||
|
||
def preprocess_spectra(self, spectra: pd.DataFrame) -> np.ndarray:
|
||
"""
|
||
对光谱数据进行预处理
|
||
|
||
Args:
|
||
spectra: 原始光谱数据
|
||
|
||
Returns:
|
||
预处理后的光谱数据
|
||
"""
|
||
if self.loaded_model_data is None:
|
||
raise ValueError("请先加载模型")
|
||
|
||
preprocess_method = self.loaded_model_data['preprocess_method']
|
||
|
||
# 处理 nan/NaN/None 值，转换为 "None" 字符串
|
||
if pd.isna(preprocess_method) or str(preprocess_method).lower() in ['nan', 'none', '']:
|
||
preprocess_method = "None"
|
||
|
||
# 解析预处理方法（可能包含划分方法前缀）
|
||
if '_' in str(preprocess_method):
|
||
parts = str(preprocess_method).split('_')
|
||
# 假设格式为 split_method_preprocess_method
|
||
actual_preprocess_method = '_'.join(parts[1:]) if len(parts) > 1 else parts[-1]
|
||
else:
|
||
actual_preprocess_method = str(preprocess_method)
|
||
|
||
# 再次检查并转换 nan
|
||
if actual_preprocess_method.lower() in ['nan', 'none', '']:
|
||
actual_preprocess_method = "None"
|
||
|
||
print(f"正在应用预处理方法: {actual_preprocess_method}")
|
||
print(f"原始光谱数据形状: {spectra.shape}")
|
||
|
||
try:
|
||
# 应用预处理
|
||
spectra_processed = Preprocessing(actual_preprocess_method, spectra)
|
||
|
||
# 确保返回numpy数组
|
||
if isinstance(spectra_processed, pd.DataFrame):
|
||
spectra_processed = spectra_processed.values
|
||
|
||
print(f"预处理后数据形状: {spectra_processed.shape}")
|
||
|
||
return spectra_processed
|
||
|
||
except Exception as e:
|
||
print(f"预处理失败: {e}")
|
||
print("使用原始数据")
|
||
return spectra.values
|
||
|
||
def predict(self, spectra_processed: np.ndarray) -> np.ndarray:
|
||
"""
|
||
使用加载的模型进行预测
|
||
|
||
Args:
|
||
spectra_processed: 预处理后的光谱数据
|
||
|
||
Returns:
|
||
预测结果
|
||
"""
|
||
if self.loaded_model_data is None:
|
||
raise ValueError("请先加载模型")
|
||
|
||
model = self.loaded_model_data['model']
|
||
|
||
print(f"正在进行预测...")
|
||
print(f"输入数据形状: {spectra_processed.shape}")
|
||
|
||
try:
|
||
# 清洗 NaN / Inf，防止 SVR 等模型报错
|
||
spectra_clean = np.nan_to_num(spectra_processed, nan=0.0, posinf=0.0, neginf=0.0)
|
||
if np.any(np.isnan(spectra_clean)) or np.any(np.isinf(spectra_clean)):
|
||
print("警告: 清洗后数据中仍存在 NaN/Inf，已重置为 0")
|
||
spectra_clean = np.nan_to_num(spectra_clean, nan=0.0, posinf=0.0, neginf=0.0)
|
||
|
||
predictions = model.predict(spectra_clean)
|
||
print(f"预测完成，结果形状: {predictions.shape}")
|
||
print(f"预测值范围: [{np.min(predictions):.4f}, {np.max(predictions):.4f}]")
|
||
print(f"预测值统计: 均值={np.mean(predictions):.4f}, 标准差={np.std(predictions):.4f}")
|
||
|
||
return predictions
|
||
|
||
except Exception as e:
|
||
print(f"预测失败: {e}")
|
||
raise
|
||
|
||
def save_predictions(self, coords: pd.DataFrame, predictions: np.ndarray,
|
||
output_path: str, prediction_column: str = 'prediction'):
|
||
"""
|
||
保存预测结果
|
||
|
||
Args:
|
||
coords: 经纬度数据
|
||
predictions: 预测结果
|
||
output_path: 输出文件路径
|
||
prediction_column: 预测列名称
|
||
"""
|
||
print(f"正在保存预测结果到: {output_path}")
|
||
|
||
# 创建结果DataFrame
|
||
result_df = coords.copy()
|
||
result_df[prediction_column] = predictions
|
||
|
||
# 确保输出目录存在
|
||
output_dir = os.path.dirname(output_path)
|
||
if output_dir:
|
||
os.makedirs(output_dir, exist_ok=True)
|
||
|
||
# 根据文件扩展名选择保存格式
|
||
file_ext = Path(output_path).suffix.lower()
|
||
|
||
if file_ext == '.xls':
|
||
# 保存为Excel 97-2003格式
|
||
try:
|
||
result_df.to_excel(output_path, index=False, engine='xlwt')
|
||
print(f" 格式: Excel 97-2003 (.xls)")
|
||
except ImportError:
|
||
print("警告: xlwt库未安装，无法保存为.xls格式，改为保存CSV格式")
|
||
csv_path = output_path.replace('.xls', '.csv')
|
||
result_df.to_csv(csv_path, index=False, encoding='utf-8-sig')
|
||
output_path = csv_path
|
||
elif file_ext == '.xlsx':
|
||
# 保存为Excel 2007+格式
|
||
try:
|
||
result_df.to_excel(output_path, index=False, engine='openpyxl')
|
||
print(f" 格式: Excel 2007+ (.xlsx)")
|
||
except ImportError:
|
||
print("警告: openpyxl库未安装，无法保存为.xlsx格式，改为保存CSV格式")
|
||
csv_path = output_path.replace('.xlsx', '.csv')
|
||
result_df.to_csv(csv_path, index=False, encoding='utf-8-sig')
|
||
output_path = csv_path
|
||
else:
|
||
# 默认保存为CSV格式
|
||
result_df.to_csv(output_path, index=False, encoding='utf-8-sig')
|
||
print(f" 格式: CSV (.csv)")
|
||
|
||
print(f"预测结果保存完成:")
|
||
print(f" 输出文件: {output_path}")
|
||
print(f" 数据形状: {result_df.shape}")
|
||
print(f" 列名: {list(result_df.columns)}")
|
||
|
||
# 显示预测结果统计
|
||
print(f"\n预测结果统计:")
|
||
print(result_df[prediction_column].describe())
|
||
|
||
return result_df
|
||
|
||
def inference_pipeline(self, sampling_csv_path: str, output_csv_path: str,
|
||
metric: str = 'test_r2', prediction_column: str = 'prediction',
|
||
model_file_path: str = None):
|
||
"""
|
||
完整的推理流程
|
||
|
||
Args:
|
||
sampling_csv_path: 采样数据CSV路径
|
||
output_csv_path: 输出预测结果CSV路径
|
||
metric: 选择最佳模型的指标
|
||
prediction_column: 预测列名称
|
||
model_file_path: 指定模型文件路径（可选）
|
||
"""
|
||
print("=" * 80)
|
||
print("开始水质参数反演推理流程")
|
||
print("=" * 80)
|
||
|
||
try:
|
||
# 1. 加载模型
|
||
print("\n步骤1: 加载模型")
|
||
print("-" * 40)
|
||
if model_file_path:
|
||
self.load_specific_model(model_file_path)
|
||
else:
|
||
self.load_best_model(metric=metric)
|
||
|
||
# 2. 加载采样数据
|
||
print("\n步骤2: 加载采样数据")
|
||
print("-" * 40)
|
||
coords, spectra = self.load_sampling_data(sampling_csv_path)
|
||
|
||
# 3. 数据预处理
|
||
print("\n步骤3: 数据预处理")
|
||
print("-" * 40)
|
||
spectra_processed = self.preprocess_spectra(spectra)
|
||
|
||
# 4. 模型预测
|
||
print("\n步骤4: 模型预测")
|
||
print("-" * 40)
|
||
predictions = self.predict(spectra_processed)
|
||
|
||
# 5. 保存预测结果
|
||
print("\n步骤5: 保存预测结果")
|
||
print("-" * 40)
|
||
result_df = self.save_predictions(coords, predictions, output_csv_path, prediction_column)
|
||
|
||
print("\n" + "=" * 80)
|
||
print("推理流程完成！")
|
||
print("=" * 80)
|
||
|
||
return predictions, result_df
|
||
|
||
except Exception as e:
|
||
print(f"\n推理流程失败: {e}")
|
||
raise
|
||
|
||
def get_model_info(self) -> Dict:
|
||
"""
|
||
获取当前加载模型的信息
|
||
|
||
Returns:
|
||
模型信息字典
|
||
"""
|
||
if self.loaded_model_data is None:
|
||
return {"status": "no_model_loaded"}
|
||
|
||
info = {
|
||
"status": "model_loaded",
|
||
"preprocess_method": self.loaded_model_data['preprocess_method'],
|
||
"model_name": self.loaded_model_data['model_name'],
|
||
"model_type": str(type(self.loaded_model_data['model'])),
|
||
"metadata": self.loaded_model_data.get('metadata', {})
|
||
}
|
||
|
||
if self.best_model_info:
|
||
info.update(self.best_model_info)
|
||
|
||
return info
|
||
|
||
def batch_inference(self, input_dir: str, output_dir: str,
|
||
metric: str = 'test_r2', prediction_column: str = 'prediction'):
|
||
"""
|
||
批量推理多个采样文件
|
||
|
||
Args:
|
||
input_dir: 输入目录，包含多个采样CSV文件
|
||
output_dir: 输出目录
|
||
metric: 选择最佳模型的指标
|
||
prediction_column: 预测列名称
|
||
"""
|
||
input_path = Path(input_dir)
|
||
output_path = Path(output_dir)
|
||
output_path.mkdir(parents=True, exist_ok=True)
|
||
|
||
# 查找所有CSV文件
|
||
csv_files = list(input_path.glob("*.csv"))
|
||
|
||
if not csv_files:
|
||
print(f"在目录 {input_dir} 中未找到CSV文件")
|
||
return
|
||
|
||
print(f"找到 {len(csv_files)} 个CSV文件进行批量推理")
|
||
|
||
# 加载模型（只需加载一次）
|
||
self.load_best_model(metric=metric)
|
||
|
||
results = {}
|
||
|
||
for csv_file in csv_files:
|
||
try:
|
||
print(f"\n处理文件: {csv_file.name}")
|
||
output_file = output_path / f"prediction_{csv_file.name}"
|
||
|
||
# 执行推理
|
||
coords, spectra = self.load_sampling_data(str(csv_file))
|
||
spectra_processed = self.preprocess_spectra(spectra)
|
||
predictions = self.predict(spectra_processed)
|
||
result_df = self.save_predictions(coords, predictions, str(output_file), prediction_column)
|
||
|
||
results[csv_file.name] = {
|
||
'output_file': str(output_file),
|
||
'sample_count': len(predictions),
|
||
'prediction_stats': {
|
||
'mean': np.mean(predictions),
|
||
'std': np.std(predictions),
|
||
'min': np.min(predictions),
|
||
'max': np.max(predictions)
|
||
}
|
||
}
|
||
|
||
except Exception as e:
|
||
print(f"处理文件 {csv_file.name} 失败: {e}")
|
||
results[csv_file.name] = {'error': str(e)}
|
||
|
||
print(f"\n批量推理完成，共处理 {len(csv_files)} 个文件")
|
||
return results
|
||
|
||
def batch_inference_multi_models(self, models_root_dir: str, sampling_csv_path: str,
|
||
output_dir: str, metric: str = 'test_r2',
|
||
prediction_column: str = 'prediction',
|
||
output_format: str = 'csv'):
|
||
"""
|
||
使用多个子文件夹中的模型进行批量推理
|
||
|
||
Args:
|
||
models_root_dir: 包含多个子文件夹的根目录，每个子文件夹作为artifacts_dir
|
||
sampling_csv_path: 采样数据CSV路径
|
||
output_dir: 输出目录
|
||
metric: 选择最佳模型的指标
|
||
prediction_column: 预测列名称
|
||
output_format: 输出文件格式 ('csv', 'xls', 'xlsx')
|
||
"""
|
||
models_root = Path(models_root_dir)
|
||
output_path = Path(output_dir)
|
||
output_path.mkdir(parents=True, exist_ok=True)
|
||
|
||
# 查找所有子文件夹
|
||
subdirs = [d for d in models_root.iterdir() if d.is_dir()]
|
||
|
||
if not subdirs:
|
||
print(f"在目录 {models_root_dir} 中未找到子文件夹")
|
||
return
|
||
|
||
print(f"找到 {len(subdirs)} 个模型子文件夹进行批量推理")
|
||
print(f"输出格式: {output_format.upper()}")
|
||
|
||
all_results = {}
|
||
|
||
for subdir in subdirs:
|
||
try:
|
||
subdir_name = subdir.name
|
||
print(f"\n{'='*60}")
|
||
print(f"处理模型文件夹: {subdir_name}")
|
||
print(f"{'='*60}")
|
||
|
||
# 创建新的推理实例，使用当前子文件夹作为artifacts_dir
|
||
model_inferencer = WaterQualityInference(str(subdir))
|
||
|
||
# 根据输出格式设置文件扩展名
|
||
file_ext = f".{output_format}"
|
||
output_file = output_path / f"{subdir_name}{file_ext}"
|
||
|
||
# 执行推理流程
|
||
predictions, result_df = model_inferencer.inference_pipeline(
|
||
sampling_csv_path=sampling_csv_path,
|
||
output_csv_path=str(output_file),
|
||
metric=metric,
|
||
prediction_column=prediction_column
|
||
)
|
||
|
||
# 收集结果信息
|
||
model_info = model_inferencer.get_model_info()
|
||
all_results[subdir_name] = {
|
||
'status': 'success',
|
||
'output_file': str(output_file),
|
||
'sample_count': len(predictions),
|
||
'model_info': model_info,
|
||
'prediction_stats': {
|
||
'mean': np.mean(predictions),
|
||
'std': np.std(predictions),
|
||
'min': np.min(predictions),
|
||
'max': np.max(predictions)
|
||
}
|
||
}
|
||
|
||
print(f"子文件夹 {subdir_name} 处理完成")
|
||
|
||
except Exception as e:
|
||
print(f"处理子文件夹 {subdir_name} 失败: {e}")
|
||
all_results[subdir_name] = {
|
||
'status': 'error',
|
||
'error': str(e)
|
||
}
|
||
|
||
print(f"\n{'='*80}")
|
||
print(f"批量推理完成，共处理 {len(subdirs)} 个模型文件夹")
|
||
print(f"{'='*80}")
|
||
|
||
# 打印汇总信息
|
||
print("\n汇总结果:")
|
||
for folder_name, result in all_results.items():
|
||
if result['status'] == 'success':
|
||
print(f" ✓ {folder_name}: {result['sample_count']} 个预测值，"
|
||
f"均值={result['prediction_stats']['mean']:.4f}")
|
||
else:
|
||
print(f" ✗ {folder_name}: 失败 - {result['error']}")
|
||
|
||
return all_results
|
||
|
||
def batch_inference_multi_data(self, artifacts_dir: str, input_dir: str,
|
||
output_dir: str, metric: str = 'test_r2',
|
||
prediction_column: str = 'prediction',
|
||
output_format: str = 'csv'):
|
||
"""
|
||
使用一个模型对多个数据文件进行批量推理，输出文件名为数据文件名（不含扩展名）
|
||
|
||
Args:
|
||
artifacts_dir: 模型目录
|
||
input_dir: 输入目录，包含多个采样CSV文件
|
||
output_dir: 输出目录
|
||
metric: 选择最佳模型的指标
|
||
prediction_column: 预测列名称
|
||
output_format: 输出文件格式 ('csv', 'xls', 'xlsx')
|
||
"""
|
||
input_path = Path(input_dir)
|
||
output_path = Path(output_dir)
|
||
output_path.mkdir(parents=True, exist_ok=True)
|
||
|
||
# 查找所有CSV文件
|
||
csv_files = list(input_path.glob("*.csv"))
|
||
|
||
if not csv_files:
|
||
print(f"在目录 {input_dir} 中未找到CSV文件")
|
||
return
|
||
|
||
print(f"找到 {len(csv_files)} 个CSV文件进行批量推理")
|
||
print(f"输出格式: {output_format.upper()}")
|
||
|
||
# 初始化推理器并加载模型（只需加载一次）
|
||
self.artifacts_dir = Path(artifacts_dir)
|
||
self.load_best_model(metric=metric)
|
||
|
||
results = {}
|
||
|
||
for csv_file in csv_files:
|
||
try:
|
||
# 获取不含扩展名的文件名
|
||
file_stem = csv_file.stem
|
||
print(f"\n处理文件: {csv_file.name}")
|
||
|
||
# 根据输出格式设置文件扩展名
|
||
file_ext = f".{output_format}"
|
||
output_file = output_path / f"{file_stem}{file_ext}"
|
||
|
||
# 执行推理
|
||
coords, spectra = self.load_sampling_data(str(csv_file))
|
||
spectra_processed = self.preprocess_spectra(spectra)
|
||
predictions = self.predict(spectra_processed)
|
||
result_df = self.save_predictions(coords, predictions, str(output_file), prediction_column)
|
||
|
||
results[file_stem] = {
|
||
'input_file': str(csv_file),
|
||
'output_file': str(output_file),
|
||
'sample_count': len(predictions),
|
||
'prediction_stats': {
|
||
'mean': np.mean(predictions),
|
||
'std': np.std(predictions),
|
||
'min': np.min(predictions),
|
||
'max': np.max(predictions)
|
||
}
|
||
}
|
||
|
||
except Exception as e:
|
||
print(f"处理文件 {csv_file.name} 失败: {e}")
|
||
results[csv_file.stem] = {'error': str(e)}
|
||
|
||
print(f"\n批量推理完成，共处理 {len(csv_files)} 个文件")
|
||
return results
|
||
|
||
def evaluate_with_split(self, data_csv_path: str, split_method: str = "random",
|
||
test_size: float = 0.2, random_state: int = 42,
|
||
target_column: int = 11, feature_start_column: int = 13,
|
||
metric: str = 'test_r2', prediction_column: str = 'prediction'):
|
||
"""
|
||
使用训练时相同的数据分割方法进行模型评估
|
||
|
||
Args:
|
||
data_csv_path: 包含目标值的完整数据集CSV路径
|
||
split_method: 数据分割方法 ("random", "spxy", "ks")
|
||
test_size: 测试集比例
|
||
random_state: 随机种子
|
||
target_column: 目标值列索引
|
||
feature_start_column: 特征开始列索引
|
||
metric: 选择模型的评估指标
|
||
prediction_column: 预测结果列名
|
||
|
||
Returns:
|
||
评估结果字典
|
||
"""
|
||
print("=" * 80)
|
||
print("开始数据分割评估流程")
|
||
print("=" * 80)
|
||
|
||
try:
|
||
# 1. 加载完整数据集
|
||
print("\n步骤1: 加载完整数据集")
|
||
print("-" * 40)
|
||
data = pd.read_csv(data_csv_path)
|
||
|
||
# 提取目标值和特征
|
||
y = data.iloc[:, target_column]
|
||
X = data.iloc[:, feature_start_column:]
|
||
|
||
# 去除目标值为空的行
|
||
mask = ~y.isna()
|
||
data_cleaned = data[mask]
|
||
y_cleaned = data_cleaned.iloc[:, target_column]
|
||
X_cleaned = data_cleaned.iloc[:, feature_start_column:]
|
||
|
||
print(f"数据加载完成:")
|
||
print(f" 原始样本数: {len(data)}")
|
||
print(f" 清理后样本数: {len(X_cleaned)}")
|
||
print(f" 特征数量: {X_cleaned.shape[1]}")
|
||
print(f" 目标值范围: {y_cleaned.min():.4f} ~ {y_cleaned.max():.4f}")
|
||
|
||
# 2. 加载最佳模型
|
||
print("\n步骤2: 加载最佳模型")
|
||
print("-" * 40)
|
||
self.load_best_model(metric=metric)
|
||
|
||
# 3. 数据预处理
|
||
print("\n步骤3: 数据预处理")
|
||
print("-" * 40)
|
||
X_processed = self.preprocess_spectra(X_cleaned)
|
||
|
||
# 4. 数据分割
|
||
print("\n步骤4: 数据分割")
|
||
print("-" * 40)
|
||
X_train, X_test, y_train, y_test = self.split_data(
|
||
X_processed, y_cleaned, method=split_method,
|
||
test_size=test_size, random_state=random_state
|
||
)
|
||
|
||
print(f"数据分割完成:")
|
||
print(f" 训练集样本数: {X_train.shape[0]}")
|
||
print(f" 测试集样本数: {X_test.shape[0]}")
|
||
|
||
# 5. 模型预测
|
||
print("\n步骤5: 模型预测")
|
||
print("-" * 40)
|
||
|
||
# 训练集预测
|
||
y_train_pred = self.loaded_model_data['model'].predict(X_train)
|
||
|
||
# 测试集预测
|
||
y_test_pred = self.loaded_model_data['model'].predict(X_test)
|
||
|
||
# 6. 计算评估指标
|
||
print("\n步骤6: 计算评估指标")
|
||
print("-" * 40)
|
||
|
||
from sklearn.metrics import mean_squared_error, mean_absolute_error, r2_score
|
||
|
||
# 训练集指标
|
||
train_mse = mean_squared_error(y_train, y_train_pred)
|
||
train_mae = mean_absolute_error(y_train, y_train_pred)
|
||
train_r2 = r2_score(y_train, y_train_pred)
|
||
train_rmse = np.sqrt(train_mse)
|
||
|
||
# 测试集指标
|
||
test_mse = mean_squared_error(y_test, y_test_pred)
|
||
test_mae = mean_absolute_error(y_test, y_test_pred)
|
||
test_r2 = r2_score(y_test, y_test_pred)
|
||
test_rmse = np.sqrt(test_mse)
|
||
|
||
results = {
|
||
'split_method': split_method,
|
||
'test_size': test_size,
|
||
'train_size': len(y_train),
|
||
'test_size_actual': len(y_test),
|
||
'train_metrics': {
|
||
'mse': train_mse,
|
||
'mae': train_mae,
|
||
'rmse': train_rmse,
|
||
'r2': train_r2
|
||
},
|
||
'test_metrics': {
|
||
'mse': test_mse,
|
||
'mae': test_mae,
|
||
'rmse': test_rmse,
|
||
'r2': test_r2
|
||
},
|
||
'predictions': {
|
||
'y_train_true': y_train,
|
||
'y_train_pred': y_train_pred,
|
||
'y_test_true': y_test,
|
||
'y_test_pred': y_test_pred
|
||
}
|
||
}
|
||
|
||
print(f"评估完成:")
|
||
print(f" 训练集指标:")
|
||
print(f" R²: {train_r2:.4f}")
|
||
print(f" RMSE: {train_rmse:.4f}")
|
||
print(f" MAE: {train_mae:.4f}")
|
||
print(f" 测试集指标:")
|
||
print(f" R²: {test_r2:.4f}")
|
||
print(f" RMSE: {test_rmse:.4f}")
|
||
print(f" MAE: {test_mae:.4f}")
|
||
|
||
print("\n" + "=" * 80)
|
||
print("数据分割评估流程完成！")
|
||
print("=" * 80)
|
||
|
||
return results
|
||
|
||
except Exception as e:
|
||
print(f"\n数据分割评估失败: {e}")
|
||
raise
|
||
|
||
|
||
def main():
|
||
"""主函数示例"""
|
||
# 创建推理实例
|
||
artifacts_dir = r"E:\code\WQ\yaobao925\qvchuyaoban"
|
||
inferencer = WaterQualityInference(artifacts_dir)
|
||
|
||
# 配置文件路径
|
||
sampling_csv = r"E:\code\WQ\xiaogujia\使用腰堡模型\spectral_sampling_results.csv"
|
||
# output_csv = r"E:\code\WQ\laodao\output"
|
||
|
||
try:
|
||
# # 示例1: 单个模型单个数据文件的推理
|
||
# print("示例1: 单个模型单个数据文件的推理")
|
||
# predictions, result_df = inferencer.inference_pipeline(
|
||
# sampling_csv_path=sampling_csv,
|
||
# output_csv_path=output_csv,
|
||
# metric='test_r2', # 使用测试集R²作为选择最佳模型的指标
|
||
# prediction_column='water_quality_prediction'
|
||
# )
|
||
#
|
||
# print(f"\n推理完成，共生成 {len(predictions)} 个预测值")
|
||
#
|
||
# # 显示模型信息
|
||
# model_info = inferencer.get_model_info()
|
||
# print(f"\n使用的模型信息:")
|
||
# print(f" 组合: {model_info.get('combination', 'Unknown')}")
|
||
# print(f" 预处理: {model_info.get('preprocess_method', 'Unknown')}")
|
||
# print(f" 算法: {model_info.get('model_name', 'Unknown')}")
|
||
|
||
# 示例2: 批量推理多个模型（每个子文件夹作为不同的artifacts_dir）
|
||
print(f"\n{'='*80}")
|
||
print("示例2: 批量推理多个模型")
|
||
models_root_dir = r"E:\code\WQ\yaobao925\qvchuyaoban" # 包含多个子文件夹的根目录
|
||
output_dir = r"E:\code\WQ\xiaogujia\使用腰堡模型\predict"
|
||
|
||
all_results = inferencer.batch_inference_multi_models(
|
||
models_root_dir=models_root_dir,
|
||
sampling_csv_path=sampling_csv,
|
||
output_dir=output_dir,
|
||
metric='test_r2',
|
||
prediction_column='water_quality_prediction'
|
||
)
|
||
|
||
# 示例3: 使用数据分割方法进行模型评估（可选）
|
||
# print(f"\n{'='*80}")
|
||
# print("示例3: 数据分割评估")
|
||
# complete_data_csv = r"E:\code\WQ\laodao\data\捞刀河-浏阳河-圭塘河.csv" # 包含目标值的完整数据集
|
||
#
|
||
# # 使用SPXY方法进行数据分割评估
|
||
# eval_results = inferencer.evaluate_with_split(
|
||
# data_csv_path=complete_data_csv,
|
||
# split_method="spxy", # 可选: "random", "spxy", "ks"
|
||
# test_size=0.2,
|
||
# random_state=42,
|
||
# target_column=11, # 目标值列索引
|
||
# feature_start_column=13, # 特征开始列索引
|
||
# metric='test_r2'
|
||
# )
|
||
#
|
||
# print(f"\n数据分割评估结果:")
|
||
# print(f" 分割方法: {eval_results['split_method']}")
|
||
# print(f" 训练集R²: {eval_results['train_metrics']['r2']:.4f}")
|
||
# print(f" 测试集R²: {eval_results['test_metrics']['r2']:.4f}")
|
||
# print(f" 训练集RMSE: {eval_results['train_metrics']['rmse']:.4f}")
|
||
# print(f" 测试集RMSE: {eval_results['test_metrics']['rmse']:.4f}")
|
||
|
||
except Exception as e:
|
||
print(f"推理失败: {e}")
|
||
import traceback
|
||
traceback.print_exc()
|
||
|
||
|
||
if __name__ == "__main__":
|
||
main()
|