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  1. DEPLOY_GUIDE.txt +63 -0
  2. README.md +40 -0
  3. app.py +946 -0
  4. requirements.txt +10 -0
DEPLOY_GUIDE.txt ADDED
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1
+ # FungalPep - Hugging Face Spaces 部署指南
2
+ # ==========================================
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+
4
+ # ═══════════════ 第一步:注册 Hugging Face ═══════════════
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+ # 1. 打开 https://huggingface.co/join
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+ # 2. 注册账号(免费)
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+ # 3. 登录后点击右上角头像 → Settings → Access Tokens
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+ # 4. 创建一个 Token(选 Write 权限),复制保存
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+
10
+ # ═══════════════ 第二步:安装 Git LFS ═══════════════
11
+ # 模型文件较大,需要 Git LFS(Large File Storage)
12
+ # Windows 下载: https://git-lfs.com/ 安装后运行:
13
+ # git lfs install
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+
15
+ # ═══════════════ 第三步:创建 Space ═══════════════
16
+ # 1. 打开 https://huggingface.co/new-space
17
+ # 2. 填写:
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+ # - Space name: fungalpep
19
+ # - License: MIT
20
+ # - SDK: Streamlit
21
+ # - Hardware: CPU basic(免费) 或 T4 small(更快,可能需付费)
22
+ # 3. 点击 Create Space
23
+
24
+ # ═══════════════ 第四步:上传文件 ═══════════════
25
+ # 在 E:\my_project 下运行以下命令:
26
+
27
+ # 克隆你的 Space 仓库
28
+ # git clone https://huggingface.co/spaces/你的用户名/fungalpep
29
+ # cd fungalpep
30
+
31
+ # 复制文件到仓库
32
+ # copy E:\my_project\hf_deploy\README.md .
33
+ # copy E:\my_project\hf_deploy\app.py .
34
+ # copy E:\my_project\hf_deploy\requirements.txt .
35
+ # mkdir checkpoints
36
+ # mkdir checkpoints_mic
37
+ # copy E:\my_project\checkpoints\best_model.pt checkpoints\
38
+ # copy E:\my_project\checkpoints_mic\best_mic_model.pt checkpoints_mic\
39
+
40
+ # 用 Git LFS 追踪大文件
41
+ # git lfs track "*.pt"
42
+
43
+ # 提交并推送
44
+ # git add .
45
+ # git commit -m "Initial deployment: FungalPep AMP + MIC prediction"
46
+ # git push
47
+
48
+ # 推送时会要求输入用户名和密码:
49
+ # 用户名: 你的 HuggingFace 用户名
50
+ # 密码: 你在第一步创建的 Access Token
51
+
52
+ # ═══════════════ 第五步:等待部署 ═══════════════
53
+ # 推送后 Hugging Face 会自动构建和部署
54
+ # 打开 https://huggingface.co/spaces/你的用户名/fungalpep 查看状态
55
+ # 首次构建约 5-10 分钟(需要安装依赖和下载 ESM-2)
56
+ # 构建成功后,你会看到 FungalPep 网页界面
57
+
58
+ # ═══════════════ 注意事项 ═══════════════
59
+ # 1. 免费 CPU 版本: ESM-2 推理较慢(约 10-30 秒/序列),但完全免费
60
+ # 2. 如需更快速度: 在 Space Settings 中升级到 T4 GPU(约 $0.60/小时)
61
+ # 3. 免费版会在不活跃时休眠,首次访问需要约 1 分钟唤醒
62
+ # 4. best_model.pt 和 best_mic_model.pt 加起来约几十 MB,不超限
63
+ # 5. ESM-2 模型会在首次运行时自动从 HuggingFace Hub 下载并缓存
README.md ADDED
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1
+ ---
2
+ title: ML Binary Classification Pipeline
3
+ emoji: 🧬
4
+ colorFrom: blue
5
+ colorTo: indigo
6
+ sdk: gradio
7
+ sdk_version: 4.44.0
8
+ app_file: app.py
9
+ pinned: false
10
+ license: mit
11
+ ---
12
+
13
+ # 🧬 ML Binary Classification Pipeline
14
+
15
+ Machine learning binary classification training & evaluation platform.
16
+
17
+ ## Features
18
+
19
+ - **8 Models**: RF, DT, KNN, XGB, AdaBoost, LR, NB, SVM
20
+ - **Interactive Model Selection**: Choose any combination of models
21
+ - **Hyperparameter Tuning**: GridSearchCV with configurable folds
22
+ - **DeLong Test**: Statistical comparison between models
23
+ - **SHAP Analysis**: Feature importance with beeswarm plots
24
+ - **Feature Ablation**: Optimal feature subset selection
25
+ - **External Validation**: ROC, PR, DCA curves, confusion matrix
26
+ - **ZIP Download**: All results packaged for download
27
+
28
+ ## Data Format
29
+
30
+ CSV files with:
31
+ - Column 1: Label (0/1)
32
+ - Column 2: Any (e.g., ID)
33
+ - Column 3+: Features
34
+
35
+ ## Output Files
36
+
37
+ - PDF/PNG charts (ROC, PR, DCA, confusion matrices, SHAP plots)
38
+ - Excel files (model metrics, feature ablation, external validation)
39
+ - Best parameters text file
40
+ - Final model pickle file
app.py ADDED
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1
+ """
2
+ ML Binary Classification Pipeline — Hugging Face Spaces Deployment
3
+ Supports 8 models with interactive selection, file upload, and ZIP download.
4
+ """
5
+
6
+ import numpy as np
7
+ import pandas as pd
8
+ import matplotlib
9
+ matplotlib.use('Agg')
10
+ import matplotlib.pyplot as plt
11
+ from sklearn.ensemble import RandomForestClassifier, AdaBoostClassifier
12
+ from sklearn.tree import DecisionTreeClassifier
13
+ from sklearn.neighbors import KNeighborsClassifier
14
+ from sklearn.linear_model import LogisticRegression
15
+ from sklearn.naive_bayes import GaussianNB
16
+ from sklearn.svm import SVC
17
+ from xgboost import XGBClassifier
18
+ from sklearn.model_selection import StratifiedKFold, GridSearchCV
19
+ from sklearn.metrics import (
20
+ roc_auc_score, confusion_matrix, roc_curve,
21
+ auc as auc_score, precision_recall_curve
22
+ )
23
+ import seaborn as sns
24
+ import warnings
25
+ from scipy import stats
26
+ import os
27
+ import shap
28
+ import pickle
29
+ from copy import deepcopy
30
+ import zipfile
31
+ import tempfile
32
+ import gradio as gr
33
+ import io
34
+ import traceback
35
+
36
+ warnings.filterwarnings('ignore')
37
+
38
+ # Font settings
39
+ plt.rcParams['font.sans-serif'] = ['DejaVu Sans', 'SimHei']
40
+ plt.rcParams['axes.unicode_minus'] = False
41
+
42
+ # ============================================================================
43
+ # Helper Functions (from original script)
44
+ # ============================================================================
45
+
46
+ def compute_midrank(x):
47
+ J = np.argsort(x)
48
+ Z = x[J]
49
+ N = len(x)
50
+ T = np.zeros(N, dtype=float)
51
+ i = 0
52
+ while i < N:
53
+ j = i
54
+ while j < N and Z[j] == Z[i]:
55
+ j += 1
56
+ T[i:j] = 0.5 * (i + j - 1)
57
+ i = j
58
+ T2 = np.empty(N, dtype=float)
59
+ T2[J] = T + 1
60
+ return T2
61
+
62
+ def fastDeLong(predictions_sorted_transposed, label_1_count):
63
+ m = label_1_count
64
+ n = predictions_sorted_transposed.shape[1] - m
65
+ positive_examples = predictions_sorted_transposed[:, :m]
66
+ negative_examples = predictions_sorted_transposed[:, m:]
67
+ k = predictions_sorted_transposed.shape[0]
68
+ tx = np.empty([k, m], dtype=float)
69
+ ty = np.empty([k, n], dtype=float)
70
+ tz = np.empty([k, m + n], dtype=float)
71
+ for r in range(k):
72
+ tx[r, :] = compute_midrank(positive_examples[r, :])
73
+ ty[r, :] = compute_midrank(negative_examples[r, :])
74
+ tz[r, :] = compute_midrank(predictions_sorted_transposed[r, :])
75
+ aucs = tz[:, :m].sum(axis=1) / m / n - float(m + 1.0) / 2.0 / n
76
+ v01 = (tz[:, :m] - tx[:, :]) / n
77
+ v10 = 1.0 - (tz[:, m:] - ty[:, :]) / m
78
+ sx = np.cov(v01)
79
+ sy = np.cov(v10)
80
+ delongcov = sx / m + sy / n
81
+ return aucs, delongcov
82
+
83
+ def calc_pvalue(aucs, sigma):
84
+ l_mat = np.array([[1, -1]])
85
+ z = np.abs(np.diff(aucs)) / np.sqrt(np.dot(np.dot(l_mat, sigma), l_mat.T))
86
+ return np.log10(2) + stats.norm.logsf(z, loc=0, scale=1) / np.log(10)
87
+
88
+ def delong_roc_test(ground_truth, predictions_one, predictions_two):
89
+ order = (-ground_truth).argsort()
90
+ label_1_count = int(ground_truth.sum())
91
+ predictions_sorted_transposed = np.vstack([predictions_one, predictions_two])[:, order]
92
+ aucs, delongcov = fastDeLong(predictions_sorted_transposed, label_1_count)
93
+ p_value = 10 ** calc_pvalue(aucs, delongcov)[0][0]
94
+ return p_value, aucs[0], aucs[1]
95
+
96
+ def find_optimal_threshold(y_true, y_probs, method='youden'):
97
+ fpr, tpr, thresholds = roc_curve(y_true, y_probs)
98
+ if method == 'youden':
99
+ youden_index = tpr - fpr
100
+ optimal_idx = np.argmax(youden_index)
101
+ optimal_threshold = thresholds[optimal_idx]
102
+ metric_value = youden_index[optimal_idx]
103
+ elif method == 'f1':
104
+ f1_scores = []
105
+ for threshold in thresholds:
106
+ y_pred = (y_probs >= threshold).astype(int)
107
+ tn, fp, fn, tp = confusion_matrix(y_true, y_pred).ravel()
108
+ precision = tp / (tp + fp) if (tp + fp) > 0 else 0
109
+ recall = tp / (tp + fn) if (tp + fn) > 0 else 0
110
+ f1 = 2 * precision * recall / (precision + recall) if (precision + recall) > 0 else 0
111
+ f1_scores.append(f1)
112
+ optimal_idx = np.argmax(f1_scores)
113
+ optimal_threshold = thresholds[optimal_idx]
114
+ metric_value = f1_scores[optimal_idx]
115
+ elif method == 'gmean':
116
+ gmean = np.sqrt(tpr * (1 - fpr))
117
+ optimal_idx = np.argmax(gmean)
118
+ optimal_threshold = thresholds[optimal_idx]
119
+ metric_value = gmean[optimal_idx]
120
+ return optimal_threshold, metric_value, optimal_idx
121
+
122
+ def calculate_net_benefit(y_true, y_probs, threshold):
123
+ y_pred = (y_probs >= threshold).astype(int)
124
+ tn, fp, fn, tp = confusion_matrix(y_true, y_pred).ravel()
125
+ n = len(y_true)
126
+ net_benefit = (tp / n) - (fp / n) * (threshold / (1 - threshold))
127
+ return net_benefit
128
+
129
+
130
+ # ============================================================================
131
+ # Model Configuration Builder
132
+ # ============================================================================
133
+ ALL_MODELS = ['RF', 'DT', 'KNN', 'XGB', 'AdaBoost', 'LR', 'NB', 'SVM']
134
+
135
+ def get_models_config(selected_models, random_state=42):
136
+ full_config = {
137
+ 'RF': {
138
+ 'model': RandomForestClassifier(random_state=random_state, n_jobs=-1),
139
+ 'params': {
140
+ 'n_estimators': [100, 200],
141
+ 'max_depth': [20, 50],
142
+ 'min_samples_split': [2, 5],
143
+ 'max_features': ['sqrt']
144
+ },
145
+ },
146
+ 'DT': {
147
+ 'model': DecisionTreeClassifier(random_state=random_state),
148
+ 'params': {
149
+ 'max_depth': [20, 50],
150
+ 'min_samples_split': [2, 10],
151
+ 'min_samples_leaf': [1, 4],
152
+ 'criterion': ['gini', 'entropy']
153
+ },
154
+ },
155
+ 'KNN': {
156
+ 'model': KNeighborsClassifier(n_jobs=-1),
157
+ 'params': {
158
+ 'n_neighbors': [3, 5, 7],
159
+ 'weights': ['uniform', 'distance'],
160
+ 'metric': ['euclidean', 'manhattan']
161
+ },
162
+ },
163
+ 'XGB': {
164
+ 'model': XGBClassifier(random_state=random_state, eval_metric='logloss', n_jobs=-1),
165
+ 'params': {
166
+ 'n_estimators': [100, 200],
167
+ 'max_depth': [5, 7],
168
+ 'learning_rate': [0.05, 0.1],
169
+ 'subsample': [0.8, 1.0],
170
+ 'colsample_bytree': [0.8, 1.0]
171
+ },
172
+ },
173
+ 'AdaBoost': {
174
+ 'model': AdaBoostClassifier(random_state=random_state),
175
+ 'params': {
176
+ 'n_estimators': [50, 100],
177
+ 'learning_rate': [0.1, 0.5, 1.0]
178
+ },
179
+ },
180
+ 'LR': {
181
+ 'model': LogisticRegression(random_state=random_state, n_jobs=-1, max_iter=2000),
182
+ 'params': {
183
+ 'C': [0.1, 1, 10],
184
+ 'penalty': ['l2'],
185
+ 'solver': ['lbfgs', 'liblinear']
186
+ },
187
+ },
188
+ 'NB': {
189
+ 'model': GaussianNB(),
190
+ 'params': {
191
+ 'var_smoothing': [1e-9, 1e-7, 1e-5]
192
+ },
193
+ },
194
+ 'SVM': {
195
+ 'model': SVC(probability=True, random_state=random_state),
196
+ 'params': {
197
+ 'C': [1, 10],
198
+ 'kernel': ['rbf', 'linear'],
199
+ 'gamma': ['scale', 'auto']
200
+ },
201
+ }
202
+ }
203
+ return {k: v for k, v in full_config.items() if k in selected_models}
204
+
205
+
206
+ # ============================================================================
207
+ # Main Pipeline
208
+ # ============================================================================
209
+ def run_pipeline(
210
+ train_file,
211
+ val_file,
212
+ selected_models,
213
+ enable_tuning,
214
+ cv_folds,
215
+ alpha,
216
+ top_n_features,
217
+ shap_sample_size,
218
+ progress=gr.Progress()
219
+ ):
220
+ """Main ML pipeline — returns (zip_path, log_text)"""
221
+ if train_file is None:
222
+ return None, "❌ 请上传训练集 CSV 文件!"
223
+
224
+ if not selected_models:
225
+ return None, "❌ 请至少选择一个模型!"
226
+
227
+ RANDOM_STATE = 42
228
+ CV_FOLDS = int(cv_folds)
229
+ ALPHA = float(alpha)
230
+ TOP_N_FEATURES = int(top_n_features)
231
+ SHAP_SAMPLE_SIZE = int(shap_sample_size)
232
+ ENABLE_HYPERPARAMETER_TUNING = enable_tuning
233
+
234
+ log_lines = []
235
+ def log(msg):
236
+ log_lines.append(msg)
237
+
238
+ # Create temp output folder
239
+ result_folder = tempfile.mkdtemp(prefix="ml_results_")
240
+
241
+ try:
242
+ # ======== Load Data ========
243
+ progress(0.02, desc="加载训练数据...")
244
+ log("=" * 70)
245
+ log("🚀 机器学习二分类模型训练与评估")
246
+ log("=" * 70)
247
+
248
+ data = pd.read_csv(train_file.name)
249
+ X = data.iloc[:, 2:]
250
+ y = data.iloc[:, 0]
251
+ feature_names = X.columns.tolist()
252
+
253
+ log(f"训练集: {X.shape[0]} 样本, {X.shape[1]} 特征")
254
+ log(f"标签分布: {dict(y.value_counts())}")
255
+ log(f"选择模型: {', '.join(selected_models)}")
256
+ log(f"超参数调优: {'启用' if ENABLE_HYPERPARAMETER_TUNING else '禁用'}")
257
+ log(f"交叉验证: {CV_FOLDS} 折")
258
+
259
+ models_config = get_models_config(selected_models, RANDOM_STATE)
260
+ skf = StratifiedKFold(n_splits=CV_FOLDS, shuffle=True, random_state=RANDOM_STATE)
261
+
262
+ # ======== Train All Models ========
263
+ best_params_dict = {}
264
+ all_model_results = {}
265
+ trained_models = {}
266
+ total_models = len(models_config)
267
+
268
+ for m_idx, (model_name, config) in enumerate(models_config.items()):
269
+ progress_val = 0.05 + 0.45 * (m_idx / total_models)
270
+ progress(progress_val, desc=f"训练模型 {model_name} ({m_idx+1}/{total_models})...")
271
+ log(f"\n{'*' * 50}")
272
+ log(f"模型: {model_name}")
273
+
274
+ X_scaled = X.values
275
+
276
+ if ENABLE_HYPERPARAMETER_TUNING:
277
+ log(f" 超参数调优 (GridSearchCV, CV={CV_FOLDS})...")
278
+ grid_search = GridSearchCV(
279
+ estimator=config['model'],
280
+ param_grid=config['params'],
281
+ cv=skf, scoring='roc_auc', n_jobs=-1, verbose=0
282
+ )
283
+ grid_search.fit(X_scaled, y)
284
+ best_params = grid_search.best_params_
285
+ best_params_dict[model_name] = best_params
286
+ log(f" ✓ 最佳参数: {best_params}")
287
+ log(f" ✓ 最佳CV AUC: {grid_search.best_score_:.4f}")
288
+ else:
289
+ best_params = {}
290
+ best_params_dict[model_name] = "默认参数"
291
+
292
+ model = deepcopy(config['model'])
293
+ if best_params:
294
+ model.set_params(**best_params)
295
+ model.fit(X_scaled, y)
296
+ trained_models[model_name] = {'model': model, 'scaler': None}
297
+
298
+ # Cross-validation
299
+ fold_results = []
300
+ all_y_true = []
301
+ all_y_probs = []
302
+ tprs = []
303
+ base_fpr = np.linspace(0, 1, 101)
304
+
305
+ for fold_idx, (train_idx, test_idx) in enumerate(skf.split(X, y), 1):
306
+ X_train_fold = X.iloc[train_idx].values
307
+ X_test_fold = X.iloc[test_idx].values
308
+ y_train_fold = y.iloc[train_idx]
309
+ y_test_fold = y.iloc[test_idx]
310
+
311
+ model_fold = deepcopy(config['model'])
312
+ if best_params:
313
+ model_fold.set_params(**best_params)
314
+ model_fold.fit(X_train_fold, y_train_fold)
315
+
316
+ y_pred_probs = model_fold.predict_proba(X_test_fold)[:, 1]
317
+ y_pred = (y_pred_probs > 0.5).astype(int)
318
+
319
+ tn, fp, fn, tp = confusion_matrix(y_test_fold, y_pred).ravel()
320
+ sensitivity = tp / (tp + fn) if (tp + fn) > 0 else 0
321
+ specificity = tn / (tn + fp) if (tn + fp) > 0 else 0
322
+ accuracy = (tp + tn) / (tp + tn + fp + fn)
323
+ prec = tp / (tp + fp) if (tp + fp) > 0 else 0
324
+ f1 = 2 * prec * sensitivity / (prec + sensitivity) if (prec + sensitivity) > 0 else 0
325
+ roc_auc = roc_auc_score(y_test_fold, y_pred_probs)
326
+
327
+ fold_results.append({
328
+ 'Fold': fold_idx, 'AUC': roc_auc, 'Accuracy': accuracy,
329
+ 'Sensitivity': sensitivity, 'Specificity': specificity,
330
+ 'Precision': prec, 'F1 Score': f1,
331
+ 'TP': tp, 'TN': tn, 'FP': fp, 'FN': fn
332
+ })
333
+
334
+ all_y_true.extend(y_test_fold)
335
+ all_y_probs.extend(y_pred_probs)
336
+
337
+ fpr_arr, tpr_arr, _ = roc_curve(y_test_fold, y_pred_probs)
338
+ tpr_interp = np.interp(base_fpr, fpr_arr, tpr_arr)
339
+ tpr_interp[0] = 0.0
340
+ tprs.append(tpr_interp)
341
+
342
+ results_df = pd.DataFrame(fold_results)
343
+ mean_row = {
344
+ 'Fold': 'Mean±Std',
345
+ 'AUC': results_df['AUC'].mean(),
346
+ 'Accuracy': results_df['Accuracy'].mean(),
347
+ 'Sensitivity': results_df['Sensitivity'].mean(),
348
+ 'Specificity': results_df['Specificity'].mean(),
349
+ 'Precision': results_df['Precision'].mean(),
350
+ 'F1 Score': results_df['F1 Score'].mean(),
351
+ 'TP': results_df['TP'].sum(), 'TN': results_df['TN'].sum(),
352
+ 'FP': results_df['FP'].sum(), 'FN': results_df['FN'].sum()
353
+ }
354
+ results_df = pd.concat([results_df, pd.DataFrame([mean_row])], ignore_index=True)
355
+
356
+ all_model_results[model_name] = {
357
+ 'results_df': results_df,
358
+ 'mean_auc': results_df.iloc[-1]['AUC'],
359
+ 'all_y_true': np.array(all_y_true),
360
+ 'all_y_probs': np.array(all_y_probs),
361
+ 'tprs': tprs,
362
+ 'base_fpr': base_fpr
363
+ }
364
+
365
+ opt_thr, youden_val, _ = find_optimal_threshold(
366
+ np.array(all_y_true), np.array(all_y_probs), method='youden'
367
+ )
368
+ all_model_results[model_name]['optimal_threshold'] = opt_thr
369
+ all_model_results[model_name]['youden_index'] = youden_val
370
+
371
+ log(f" ✓ 平均AUC={mean_row['AUC']:.4f}, Acc={mean_row['Accuracy']:.4f}, 最佳阈值={opt_thr:.4f}")
372
+
373
+ log(f"\n{'=' * 70}")
374
+ log("所有模型训练完成!")
375
+
376
+ model_names = list(all_model_results.keys())
377
+ n_models = len(model_names)
378
+
379
+ # ======== ROC Curves (All Models - Internal CV) ========
380
+ progress(0.52, desc="绘制ROC曲线...")
381
+ colors_all = ['#1f77b4', '#ff7f0e', '#2ca02c', '#d62728', '#9467bd', '#8c564b', '#e377c2', '#7f7f7f']
382
+
383
+ plt.figure(figsize=(12, 10))
384
+ for idx, mn in enumerate(model_names):
385
+ res = all_model_results[mn]
386
+ mean_tpr = np.mean(res['tprs'], axis=0)
387
+ mean_tpr[-1] = 1.0
388
+ mean_auc_val = auc_score(res['base_fpr'], mean_tpr)
389
+ std_auc = res['results_df'].iloc[:-1]['AUC'].std()
390
+ std_tpr = np.std(res['tprs'], axis=0)
391
+ tprs_upper = np.minimum(mean_tpr + std_tpr, 1)
392
+ tprs_lower = np.maximum(mean_tpr - std_tpr, 0)
393
+ plt.plot(res['base_fpr'], mean_tpr, color=colors_all[idx % 8], lw=2.5, alpha=0.8,
394
+ label=f'{mn} (AUC={mean_auc_val:.3f}±{std_auc:.3f})')
395
+ plt.plot(res['base_fpr'], tprs_upper, color=colors_all[idx % 8], lw=1, alpha=0.3, linestyle='--')
396
+ plt.plot(res['base_fpr'], tprs_lower, color=colors_all[idx % 8], lw=1, alpha=0.3, linestyle='--')
397
+ plt.plot([0, 1], [0, 1], linestyle='--', lw=2, color='gray', label='Chance', alpha=0.5)
398
+ plt.xlim([-0.05, 1.05]); plt.ylim([-0.05, 1.05])
399
+ plt.xlabel('FPR', fontsize=13); plt.ylabel('TPR', fontsize=13)
400
+ plt.title('ROC Curves (Internal CV)', fontsize=14, fontweight='bold')
401
+ plt.legend(loc="lower right", fontsize=10, framealpha=0.9)
402
+ plt.grid(True, alpha=0.3); plt.tight_layout()
403
+ plt.savefig(os.path.join(result_folder, 'roc_curves_all_models_internal_cv.pdf'), format='pdf', bbox_inches='tight', dpi=300)
404
+ plt.savefig(os.path.join(result_folder, 'roc_curves_all_models_internal_cv.png'), format='png', bbox_inches='tight', dpi=150)
405
+ plt.close()
406
+
407
+ # ======== PR Curves ========
408
+ progress(0.55, desc="绘制PR曲线...")
409
+ plt.figure(figsize=(12, 10))
410
+ for idx, mn in enumerate(model_names):
411
+ res = all_model_results[mn]
412
+ pr_aucs_fold = []
413
+ for train_idx, test_idx in skf.split(X, y):
414
+ cfg = models_config[mn]
415
+ X_tr = X.iloc[train_idx].values
416
+ X_te = X.iloc[test_idx].values
417
+ y_tr = y.iloc[train_idx]; y_te = y.iloc[test_idx]
418
+ m_pr = deepcopy(cfg['model'])
419
+ bp = best_params_dict[mn]
420
+ if isinstance(bp, dict) and bp:
421
+ m_pr.set_params(**bp)
422
+ m_pr.fit(X_tr, y_tr)
423
+ yp = m_pr.predict_proba(X_te)[:, 1]
424
+ prc, rec, _ = precision_recall_curve(y_te, yp)
425
+ pr_aucs_fold.append(auc_score(rec, prc))
426
+ mean_pr = np.mean(pr_aucs_fold); std_pr = np.std(pr_aucs_fold)
427
+ precision_all, recall_all, _ = precision_recall_curve(res['all_y_true'], res['all_y_probs'])
428
+ plt.plot(recall_all, precision_all, color=colors_all[idx % 8], lw=2.5, alpha=0.8,
429
+ label=f'{mn} (PR={mean_pr:.3f}±{std_pr:.3f})')
430
+ plt.xlim([-0.05, 1.05]); plt.ylim([-0.05, 1.05])
431
+ plt.xlabel('Recall', fontsize=13); plt.ylabel('Precision', fontsize=13)
432
+ plt.title('PR Curves (Internal CV)', fontsize=14, fontweight='bold')
433
+ plt.legend(loc="lower left", fontsize=10, framealpha=0.9)
434
+ plt.grid(True, alpha=0.3); plt.tight_layout()
435
+ plt.savefig(os.path.join(result_folder, 'pr_curves_all_models_internal_cv.pdf'), format='pdf', bbox_inches='tight', dpi=300)
436
+ plt.savefig(os.path.join(result_folder, 'pr_curves_all_models_internal_cv.png'), format='png', bbox_inches='tight', dpi=150)
437
+ plt.close()
438
+
439
+ # ======== Confusion Matrices ========
440
+ progress(0.58, desc="绘制混淆矩阵...")
441
+ n_rows = (n_models + 3) // 4
442
+ fig, axes = plt.subplots(n_rows, 4, figsize=(16, 4 * n_rows))
443
+ axes_flat = axes.flatten() if n_models > 1 else [axes]
444
+ for idx, mn in enumerate(model_names):
445
+ res = all_model_results[mn]
446
+ y_pred_cm = (res['all_y_probs'] >= res['optimal_threshold']).astype(int)
447
+ cm = confusion_matrix(res['all_y_true'], y_pred_cm)
448
+ sns.heatmap(cm, annot=True, fmt='d', cmap='Blues', cbar=False,
449
+ xticklabels=['Neg', 'Pos'], yticklabels=['Neg', 'Pos'],
450
+ ax=axes_flat[idx], annot_kws={'fontsize': 11})
451
+ axes_flat[idx].set_xlabel('Predicted', fontsize=11)
452
+ axes_flat[idx].set_ylabel('True', fontsize=11)
453
+ acc_cm = (cm[0, 0] + cm[1, 1]) / cm.sum()
454
+ axes_flat[idx].set_title(f'{mn}\n(Acc={acc_cm:.3f}, Thr={res["optimal_threshold"]:.3f})', fontsize=12, fontweight='bold')
455
+ for idx in range(n_models, len(axes_flat)):
456
+ axes_flat[idx].set_visible(False)
457
+ plt.suptitle('Confusion Matrices (Internal CV)', fontsize=15, fontweight='bold', y=1.00)
458
+ plt.tight_layout()
459
+ plt.savefig(os.path.join(result_folder, 'confusion_matrices_all_models.pdf'), format='pdf', bbox_inches='tight', dpi=300)
460
+ plt.savefig(os.path.join(result_folder, 'confusion_matrices_all_models.png'), format='png', bbox_inches='tight', dpi=150)
461
+ plt.close()
462
+
463
+ # ======== DeLong Test ========
464
+ progress(0.62, desc="DeLong检验...")
465
+ best_model_name = max(all_model_results, key=lambda x: all_model_results[x]['mean_auc'])
466
+ best_model_auc = all_model_results[best_model_name]['mean_auc']
467
+ log(f"\n最佳模型: {best_model_name} (AUC={best_model_auc:.4f})")
468
+
469
+ delong_results = []
470
+ retained_models = [best_model_name]
471
+
472
+ for other_model in model_names:
473
+ if other_model == best_model_name:
474
+ continue
475
+ y_true_dl = all_model_results[best_model_name]['all_y_true']
476
+ y_probs_best = all_model_results[best_model_name]['all_y_probs']
477
+ y_probs_other = all_model_results[other_model]['all_y_probs']
478
+ try:
479
+ p_value, auc1, auc2 = delong_roc_test(y_true_dl, y_probs_best, y_probs_other)
480
+ except:
481
+ p_value = 1.0; auc1 = best_model_auc; auc2 = all_model_results[other_model]['mean_auc']
482
+ if p_value >= ALPHA:
483
+ decision = f"保留 (P>={ALPHA})"
484
+ retained_models.append(other_model)
485
+ else:
486
+ decision = f"排除 (P<{ALPHA})"
487
+ delong_results.append({
488
+ 'Model 1': best_model_name, 'AUC 1': auc1,
489
+ 'Model 2': other_model, 'AUC 2': auc2,
490
+ 'P-value': p_value, 'Decision': decision
491
+ })
492
+ log(f" {best_model_name} vs {other_model}: P={p_value:.4e} → {decision}")
493
+
494
+ delong_df = pd.DataFrame(delong_results).sort_values('P-value', ascending=False) if delong_results else pd.DataFrame()
495
+ log(f"保留模型: {', '.join(retained_models)}")
496
+
497
+ # ======== SHAP Analysis ========
498
+ progress(0.65, desc="SHAP特征重要性分析...")
499
+ shap_feature_importance = {}
500
+
501
+ for s_idx, mn in enumerate(retained_models):
502
+ progress(0.65 + 0.1 * (s_idx / len(retained_models)), desc=f"SHAP分析 {mn}...")
503
+ log(f"\n计算 {mn} 的SHAP值...")
504
+ model_obj = trained_models[mn]['model']
505
+ X_for_shap = X.values
506
+ n_samples = min(SHAP_SAMPLE_SIZE, X_for_shap.shape[0])
507
+ np.random.seed(RANDOM_STATE)
508
+ sample_indices = np.random.choice(X_for_shap.shape[0], n_samples, replace=False)
509
+ X_shap_sample = X_for_shap[sample_indices]
510
+
511
+ try:
512
+ if mn in ['RF', 'XGB', 'DT', 'AdaBoost']:
513
+ explainer = shap.TreeExplainer(model_obj)
514
+ shap_values = explainer.shap_values(X_shap_sample)
515
+ if isinstance(shap_values, list):
516
+ shap_values = shap_values[1]
517
+ else:
518
+ bg_size = min(100, n_samples)
519
+ bg_idx = np.random.choice(n_samples, bg_size, replace=False)
520
+ background = X_shap_sample[bg_idx]
521
+ def predict_fn(x, m=model_obj):
522
+ return m.predict_proba(x)[:, 1]
523
+ explainer = shap.KernelExplainer(predict_fn, background)
524
+ shap_values = explainer.shap_values(X_shap_sample)
525
+
526
+ if isinstance(shap_values, list):
527
+ shap_values = shap_values[0]
528
+ shap_values = np.array(shap_values)
529
+ if shap_values.ndim > 2:
530
+ shap_values = shap_values[0]
531
+
532
+ feature_importance = np.abs(shap_values).mean(axis=0)
533
+ if feature_importance.ndim > 1:
534
+ feature_importance = feature_importance.flatten()
535
+ if len(feature_importance) != len(feature_names):
536
+ feature_importance = feature_importance[:len(feature_names)] if len(feature_importance) > len(feature_names) else np.pad(feature_importance, (0, len(feature_names) - len(feature_importance)), 'constant')
537
+
538
+ importance_df = pd.DataFrame({'Feature': feature_names, 'Importance': feature_importance}).sort_values('Importance', ascending=False)
539
+ shap_feature_importance[mn] = importance_df
540
+
541
+ X_shap_df = pd.DataFrame(X_shap_sample, columns=feature_names)
542
+ if shap_values.shape[1] != X_shap_df.shape[1]:
543
+ if shap_values.shape[1] > X_shap_df.shape[1]:
544
+ shap_values = shap_values[:, :X_shap_df.shape[1]]
545
+ else:
546
+ padding = np.zeros((shap_values.shape[0], X_shap_df.shape[1] - shap_values.shape[1]))
547
+ shap_values = np.hstack([shap_values, padding])
548
+
549
+ plt.figure(figsize=(12, 8))
550
+ shap.summary_plot(shap_values, X_shap_df, plot_type="dot", show=False, max_display=TOP_N_FEATURES)
551
+ plt.title(f'SHAP Feature Importance - {mn} (Top {TOP_N_FEATURES})', fontsize=14, fontweight='bold')
552
+ plt.tight_layout()
553
+ plt.savefig(os.path.join(result_folder, f'shap_beeswarm_{mn}.pdf'), format='pdf', bbox_inches='tight')
554
+ plt.savefig(os.path.join(result_folder, f'shap_beeswarm_{mn}.png'), format='png', bbox_inches='tight', dpi=150)
555
+ plt.close()
556
+ log(f" ✓ {mn} SHAP完成, 前5特征: {', '.join(importance_df.head(5)['Feature'].tolist())}")
557
+
558
+ except Exception as e:
559
+ log(f" ✗ {mn} SHAP出错: {str(e)}")
560
+ traceback.print_exc()
561
+
562
+ # ======== Feature Ablation ========
563
+ progress(0.78, desc="特征消融分析...")
564
+ ablation_results = {}
565
+ for mn in retained_models:
566
+ if mn not in shap_feature_importance:
567
+ continue
568
+ log(f"\n特征消融: {mn}")
569
+ imp_df = shap_feature_importance[mn]
570
+ top_features = imp_df.head(TOP_N_FEATURES)['Feature'].tolist()
571
+ feature_counts = []; auc_scores_abl = []; all_subset_probs = {}
572
+ cfg = models_config[mn]
573
+
574
+ for n_feat in range(1, len(top_features) + 1):
575
+ sel_feats = top_features[:n_feat]
576
+ X_sub = X[sel_feats]
577
+ fold_aucs = []; sub_yt = []; sub_yp = []
578
+ for train_idx, test_idx in skf.split(X_sub, y):
579
+ X_tr = X_sub.iloc[train_idx].values; X_te = X_sub.iloc[test_idx].values
580
+ y_tr = y.iloc[train_idx]; y_te = y.iloc[test_idx]
581
+ m_f = deepcopy(cfg['model'])
582
+ bp = best_params_dict.get(mn, {})
583
+ if isinstance(bp, dict) and bp:
584
+ m_f.set_params(**bp)
585
+ m_f.fit(X_tr, y_tr)
586
+ yp = m_f.predict_proba(X_te)[:, 1]
587
+ sub_yt.extend(y_te); sub_yp.extend(yp)
588
+ fold_aucs.append(roc_auc_score(y_te, yp))
589
+ ma = np.mean(fold_aucs)
590
+ feature_counts.append(n_feat); auc_scores_abl.append(ma)
591
+ all_subset_probs[n_feat] = {'y_true': np.array(sub_yt), 'y_probs': np.array(sub_yp)}
592
+
593
+ # DeLong for ablation
594
+ full_probs = all_model_results[mn]['all_y_probs']
595
+ full_auc = all_model_results[mn]['mean_auc']
596
+ optimal_n = None
597
+ abl_delong = []
598
+ for n_feat in range(1, len(top_features) + 1):
599
+ sd = all_subset_probs[n_feat]
600
+ sauc = auc_scores_abl[n_feat - 1]
601
+ try:
602
+ if len(full_probs) == len(sd['y_probs']):
603
+ pv, _, _ = delong_roc_test(sd['y_true'], full_probs, sd['y_probs'])
604
+ else:
605
+ pv = 0.1 if abs(sauc - full_auc) <= 0.05 else 0.01
606
+ except:
607
+ pv = 0.1 if abs(sauc - full_auc) <= 0.05 else 0.01
608
+ sig = "有显著差异" if pv < ALPHA else "无显著差异"
609
+ abl_delong.append({'N_Features': n_feat, 'Subset_AUC': sauc, 'Full_AUC': full_auc, 'P_value': pv, 'Significance': sig})
610
+ if optimal_n is None and pv >= ALPHA:
611
+ optimal_n = n_feat
612
+
613
+ ablation_results[mn] = {
614
+ 'feature_counts': feature_counts, 'auc_scores': auc_scores_abl,
615
+ 'top_features': top_features, 'delong_results': pd.DataFrame(abl_delong),
616
+ 'optimal_n_features': optimal_n if optimal_n else len(top_features),
617
+ 'optimal_features': top_features[:optimal_n] if optimal_n else top_features
618
+ }
619
+ log(f" ✓ {mn} 最优特征数: {ablation_results[mn]['optimal_n_features']}")
620
+
621
+ # ======== Select Final Model ========
622
+ final_candidates = {}
623
+ for mn in retained_models:
624
+ if mn in ablation_results:
625
+ ar = ablation_results[mn]
626
+ final_candidates[mn] = {
627
+ 'n_features': ar['optimal_n_features'],
628
+ 'features': ar['optimal_features'],
629
+ 'auc': ar['auc_scores'][ar['optimal_n_features'] - 1]
630
+ }
631
+ final_model_name = min(final_candidates, key=lambda x: final_candidates[x]['n_features']) if final_candidates else None
632
+ final_model_info = final_candidates.get(final_model_name) if final_model_name else None
633
+
634
+ if final_model_name:
635
+ log(f"\n★ 最终模型: {final_model_name}, 特征数={final_model_info['n_features']}, AUC={final_model_info['auc']:.4f}")
636
+
637
+ # ======== Ablation Plot ========
638
+ progress(0.83, desc="绘制消融曲线...")
639
+ plt.figure(figsize=(12, 8))
640
+ colors_abl = ['b', 'g', 'r', 'c', 'm', 'y', 'k', 'orange']
641
+ for idx, (mn, ar) in enumerate(ablation_results.items()):
642
+ plt.plot(ar['feature_counts'], ar['auc_scores'], marker='o', lw=2, ms=6,
643
+ color=colors_abl[idx % 8], label=mn)
644
+ opt_n = ar['optimal_n_features']
645
+ opt_auc = ar['auc_scores'][opt_n - 1]
646
+ plt.scatter([opt_n], [opt_auc], s=200, marker='*', color=colors_abl[idx % 8], edgecolors='black', lw=2, zorder=5)
647
+ plt.xlabel('Number of Features', fontsize=13); plt.ylabel('AUC', fontsize=13)
648
+ plt.title('Feature Ablation (★=Optimal)', fontsize=14, fontweight='bold')
649
+ plt.legend(loc='lower right', fontsize=11); plt.grid(True, alpha=0.3)
650
+ plt.tight_layout()
651
+ plt.savefig(os.path.join(result_folder, 'feature_ablation_curve.pdf'), format='pdf', bbox_inches='tight')
652
+ plt.savefig(os.path.join(result_folder, 'feature_ablation_curve.png'), format='png', bbox_inches='tight', dpi=150)
653
+ plt.close()
654
+
655
+ # ======== DCA Curves (Retained Models) ========
656
+ progress(0.85, desc="绘制DCA曲线...")
657
+ plt.figure(figsize=(12, 8))
658
+ threshold_range = np.linspace(0.01, 0.99, 100)
659
+ for idx, mn in enumerate(retained_models):
660
+ res = all_model_results[mn]
661
+ nbs = [calculate_net_benefit(res['all_y_true'], res['all_y_probs'], t) for t in threshold_range]
662
+ lbl = f'{mn} ★' if mn == final_model_name else mn
663
+ plt.plot(threshold_range, nbs, color=colors_abl[idx % 8], lw=2.5, alpha=0.8, label=lbl)
664
+ prevalence = np.mean(all_model_results[retained_models[0]]['all_y_true'])
665
+ treat_all = [(prevalence - (1 - prevalence) * (pt / (1 - pt))) for pt in threshold_range]
666
+ plt.plot(threshold_range, treat_all, 'k--', lw=2, alpha=0.5, label='Treat All')
667
+ plt.plot(threshold_range, [0] * len(threshold_range), 'gray', lw=2, alpha=0.5, label='Treat None')
668
+ plt.xlim([0, 1]); plt.xlabel('Threshold', fontsize=13); plt.ylabel('Net Benefit', fontsize=13)
669
+ plt.title('Decision Curve Analysis', fontsize=14, fontweight='bold')
670
+ plt.legend(loc="upper right", fontsize=11); plt.grid(True, alpha=0.3); plt.tight_layout()
671
+ plt.savefig(os.path.join(result_folder, 'dca_curve_retained_models.pdf'), format='pdf', bbox_inches='tight')
672
+ plt.savefig(os.path.join(result_folder, 'dca_curve_retained_models.png'), format='png', bbox_inches='tight', dpi=150)
673
+ plt.close()
674
+
675
+ # ======== External Validation ========
676
+ if val_file is not None and final_model_name:
677
+ progress(0.88, desc="外部验证...")
678
+ log(f"\n{'=' * 70}")
679
+ log("外部验证集评估")
680
+
681
+ ext_data = pd.read_csv(val_file.name)
682
+ X_ext = ext_data.iloc[:, 2:]
683
+ y_ext = ext_data.iloc[:, 0]
684
+ log(f"验证集: {X_ext.shape[0]} 样本, {X_ext.shape[1]} 特征")
685
+
686
+ X_ext_sel = X_ext[final_model_info['features']]
687
+ X_train_f = X[final_model_info['features']]
688
+ cfg = models_config[final_model_name]
689
+
690
+ final_m = deepcopy(cfg['model'])
691
+ bp = best_params_dict[final_model_name]
692
+ if isinstance(bp, dict) and bp:
693
+ final_m.set_params(**bp)
694
+ final_m.fit(X_train_f.values, y)
695
+
696
+ y_ext_probs = final_m.predict_proba(X_ext_sel.values)[:, 1]
697
+ y_ext_pred = (y_ext_probs > 0.5).astype(int)
698
+
699
+ tn, fp, fn, tp = confusion_matrix(y_ext, y_ext_pred).ravel()
700
+ sens = tp / (tp + fn) if (tp + fn) > 0 else 0
701
+ spec = tn / (tn + fp) if (tn + fp) > 0 else 0
702
+ acc = (tp + tn) / (tp + tn + fp + fn)
703
+ prec = tp / (tp + fp) if (tp + fp) > 0 else 0
704
+ f1 = 2 * prec * sens / (prec + sens) if (prec + sens) > 0 else 0
705
+ ext_auc = roc_auc_score(y_ext, y_ext_probs)
706
+
707
+ log(f" AUC={ext_auc:.4f}, Acc={acc:.4f}, Sens={sens:.4f}, Spec={spec:.4f}, F1={f1:.4f}")
708
+
709
+ # External ROC
710
+ fpr_e, tpr_e, _ = roc_curve(y_ext, y_ext_probs)
711
+ plt.figure(figsize=(10, 8))
712
+ plt.plot(fpr_e, tpr_e, 'b', lw=2.5, label=f'{final_model_name} (AUC={ext_auc:.3f})')
713
+ plt.plot([0, 1], [0, 1], '--', color='gray', alpha=0.5)
714
+ plt.xlabel('FPR'); plt.ylabel('TPR')
715
+ plt.title(f'ROC - External Validation ({final_model_name})', fontweight='bold')
716
+ plt.legend(loc="lower right"); plt.grid(True, alpha=0.3); plt.tight_layout()
717
+ plt.savefig(os.path.join(result_folder, 'roc_external_validation.pdf'), format='pdf', bbox_inches='tight')
718
+ plt.savefig(os.path.join(result_folder, 'roc_external_validation.png'), format='png', bbox_inches='tight', dpi=150)
719
+ plt.close()
720
+
721
+ # External CM
722
+ cm_ext = confusion_matrix(y_ext, y_ext_pred)
723
+ plt.figure(figsize=(8, 6))
724
+ sns.heatmap(cm_ext, annot=True, fmt='d', cmap='Blues', cbar=False,
725
+ xticklabels=['Neg', 'Pos'], yticklabels=['Neg', 'Pos'])
726
+ plt.xlabel('Predicted'); plt.ylabel('True')
727
+ plt.title(f'Confusion Matrix - External ({final_model_name})', fontweight='bold')
728
+ plt.tight_layout()
729
+ plt.savefig(os.path.join(result_folder, 'cm_external_validation.pdf'), format='pdf', bbox_inches='tight')
730
+ plt.savefig(os.path.join(result_folder, 'cm_external_validation.png'), format='png', bbox_inches='tight', dpi=150)
731
+ plt.close()
732
+
733
+ # External PR
734
+ pr_e, re_e, _ = precision_recall_curve(y_ext, y_ext_probs)
735
+ plt.figure(figsize=(10, 8))
736
+ plt.plot(re_e, pr_e, 'b', lw=2.5, label=final_model_name)
737
+ plt.xlabel('Recall'); plt.ylabel('Precision')
738
+ plt.title(f'PR Curve - External ({final_model_name})', fontweight='bold')
739
+ plt.legend(); plt.grid(True, alpha=0.3); plt.tight_layout()
740
+ plt.savefig(os.path.join(result_folder, 'pr_external_validation.pdf'), format='pdf', bbox_inches='tight')
741
+ plt.savefig(os.path.join(result_folder, 'pr_external_validation.png'), format='png', bbox_inches='tight', dpi=150)
742
+ plt.close()
743
+
744
+ # External DCA
745
+ opt_thr_e, _, _ = find_optimal_threshold(y_ext, y_ext_probs, method='youden')
746
+ nbs_ext = [calculate_net_benefit(y_ext, y_ext_probs, t) for t in threshold_range]
747
+ prev_e = np.mean(y_ext)
748
+ ta_e = [(prev_e - (1 - prev_e) * (pt / (1 - pt))) for pt in threshold_range]
749
+ plt.figure(figsize=(10, 8))
750
+ plt.plot(threshold_range, nbs_ext, 'b', lw=2.5, label=final_model_name)
751
+ plt.plot(threshold_range, ta_e, 'k--', lw=2, alpha=0.5, label='Treat All')
752
+ plt.plot(threshold_range, [0]*len(threshold_range), 'gray', lw=2, alpha=0.5, label='Treat None')
753
+ plt.xlabel('Threshold'); plt.ylabel('Net Benefit')
754
+ plt.title(f'DCA - External ({final_model_name})', fontweight='bold')
755
+ plt.legend(loc="upper right"); plt.grid(True, alpha=0.3); plt.tight_layout()
756
+ plt.savefig(os.path.join(result_folder, 'dca_external_validation.pdf'), format='pdf', bbox_inches='tight')
757
+ plt.savefig(os.path.join(result_folder, 'dca_external_validation.png'), format='png', bbox_inches='tight', dpi=150)
758
+ plt.close()
759
+
760
+ # Save external validation Excel
761
+ with pd.ExcelWriter(os.path.join(result_folder, 'external_validation_results.xlsx'), engine='openpyxl') as writer:
762
+ pd.DataFrame([{
763
+ 'Model': final_model_name, 'N_Features': final_model_info['n_features'],
764
+ 'AUC': ext_auc, 'Accuracy': acc, 'Sensitivity': sens,
765
+ 'Specificity': spec, 'Precision': prec, 'F1 Score': f1
766
+ }]).to_excel(writer, sheet_name='Metrics', index=False)
767
+ pd.DataFrame({'Feature': final_model_info['features']}).to_excel(writer, sheet_name='Features', index=False)
768
+ pd.DataFrame({'True': y_ext, 'Predicted': y_ext_pred, 'Probability': y_ext_probs}).to_excel(writer, sheet_name='Predictions', index=False)
769
+
770
+ # ======== Save Excel Results ========
771
+ progress(0.92, desc="保存结果到Excel...")
772
+
773
+ # Model evaluation Excel
774
+ with pd.ExcelWriter(os.path.join(result_folder, 'model_evaluation_results.xlsx'), engine='openpyxl') as writer:
775
+ for mn, res in all_model_results.items():
776
+ res['results_df'].to_excel(writer, sheet_name=mn, index=False)
777
+ summary_data = []
778
+ for mn, res in all_model_results.items():
779
+ row = res['results_df'].iloc[-1].to_dict()
780
+ row['Model'] = mn
781
+ row['Retained'] = 'Yes' if mn in retained_models else 'No'
782
+ row['Is_Final'] = 'Yes' if mn == final_model_name else 'No'
783
+ summary_data.append(row)
784
+ summary_df = pd.DataFrame(summary_data)
785
+ cols = ['Model', 'Retained', 'Is_Final'] + [c for c in summary_df.columns if c not in ['Model', 'Fold', 'Retained', 'Is_Final']]
786
+ summary_df[cols].sort_values('AUC', ascending=False).to_excel(writer, sheet_name='Summary', index=False)
787
+ if len(delong_df) > 0:
788
+ delong_df.to_excel(writer, sheet_name='DeLong_Test', index=False)
789
+
790
+ # Feature ablation Excel
791
+ with pd.ExcelWriter(os.path.join(result_folder, 'feature_ablation_results.xlsx'), engine='openpyxl') as writer:
792
+ for mn, ar in ablation_results.items():
793
+ abl_df = pd.DataFrame({'Feature_Count': ar['feature_counts'], 'AUC': ar['auc_scores']})
794
+ abl_df.to_excel(writer, sheet_name=mn, index=False)
795
+ if 'delong_results' in ar:
796
+ ar['delong_results'].to_excel(writer, sheet_name=f'{mn}_DeLong', index=False)
797
+ for mn, imp_df in shap_feature_importance.items():
798
+ imp_df.to_excel(writer, sheet_name=f'{mn}_Importance', index=False)
799
+
800
+ # Save best params txt
801
+ with open(os.path.join(result_folder, 'best_parameters.txt'), 'w', encoding='utf-8') as f:
802
+ f.write("=" * 70 + "\n")
803
+ f.write("各模型最佳超参数\n")
804
+ f.write("=" * 70 + "\n\n")
805
+ for mn in models_config.keys():
806
+ f.write(f"\n模型: {mn}\n")
807
+ params = best_params_dict[mn]
808
+ if isinstance(params, dict):
809
+ for k, v in params.items():
810
+ f.write(f" {k}: {v}\n")
811
+ else:
812
+ f.write(f" {params}\n")
813
+ f.write(f" AUC: {all_model_results[mn]['mean_auc']:.4f}\n")
814
+ f.write(f" 保留: {'是' if mn in retained_models else '否'}\n")
815
+ if final_model_name:
816
+ f.write(f"\n\n最终模型: {final_model_name}\n")
817
+ f.write(f"特征数: {final_model_info['n_features']}\n")
818
+ f.write(f"特征: {', '.join(final_model_info['features'])}\n")
819
+
820
+ # Save final model pickle
821
+ if final_model_name:
822
+ pickle.dump({
823
+ 'model_name': final_model_name,
824
+ 'model': trained_models[final_model_name]['model'],
825
+ 'best_params': best_params_dict[final_model_name],
826
+ 'optimal_features': final_model_info['features'],
827
+ 'n_features': final_model_info['n_features'],
828
+ 'train_auc': final_model_info['auc'],
829
+ 'optimal_threshold': all_model_results[final_model_name]['optimal_threshold']
830
+ }, open(os.path.join(result_folder, f'final_model_{final_model_name}.pkl'), 'wb'))
831
+
832
+ # ======== Create ZIP ========
833
+ progress(0.96, desc="打包为ZIP...")
834
+ zip_path = os.path.join(tempfile.gettempdir(), "ml_results.zip")
835
+ with zipfile.ZipFile(zip_path, 'w', zipfile.ZIP_DEFLATED) as zf:
836
+ for root, dirs, files in os.walk(result_folder):
837
+ for file in files:
838
+ filepath = os.path.join(root, file)
839
+ arcname = os.path.relpath(filepath, result_folder)
840
+ zf.write(filepath, arcname)
841
+
842
+ n_files = len([f for _, _, files in os.walk(result_folder) for f in files])
843
+ log(f"\n{'=' * 70}")
844
+ log(f"✅ 分析完成! 共生成 {n_files} 个文件")
845
+ log(f"{'=' * 70}")
846
+
847
+ progress(1.0, desc="完成!")
848
+ return zip_path, "\n".join(log_lines)
849
+
850
+ except Exception as e:
851
+ log(f"\n❌ 运行出错: {str(e)}")
852
+ log(traceback.format_exc())
853
+ return None, "\n".join(log_lines)
854
+
855
+
856
+ # ============================================================================
857
+ # Gradio Interface
858
+ # ============================================================================
859
+
860
+ DESCRIPTION = """
861
+ # 🧬 ML 二分类模型训练与评估平台
862
+
863
+ 上传训练集和验证集 CSV 文件,自动完成以下分析流程:
864
+
865
+ **📊 分析内容:** 8种机器学习模型训练 → 交叉验证 → DeLong检验筛选 → SHAP特征重要性 → 特征消融 → 外部验证
866
+
867
+ **📁 数据格式要求:** CSV文件,第1列为标签(0/1),第2列任意(如ID),第3列起为特征
868
+
869
+ **⬇️ 输出:** 所有结果打包为ZIP下载(含PDF图表 + PNG图表 + Excel数据 + 模型文件)
870
+ """
871
+
872
+ with gr.Blocks(
873
+ title="ML Binary Classification Pipeline",
874
+ theme=gr.themes.Soft(
875
+ primary_hue="blue",
876
+ secondary_hue="slate",
877
+ ),
878
+ css="""
879
+ .main-header { text-align: center; margin-bottom: 1rem; }
880
+ .model-selector label { font-weight: 600; }
881
+ footer { display: none !important; }
882
+ """
883
+ ) as demo:
884
+
885
+ gr.Markdown(DESCRIPTION)
886
+
887
+ with gr.Row():
888
+ with gr.Column(scale=1):
889
+ gr.Markdown("### 📂 数据上传")
890
+ train_file = gr.File(label="训练集 CSV(必需)", file_types=[".csv"])
891
+ val_file = gr.File(label="验证集 CSV(可选)", file_types=[".csv"])
892
+
893
+ gr.Markdown("### 🤖 模型选择")
894
+ model_selector = gr.CheckboxGroup(
895
+ choices=ALL_MODELS,
896
+ value=ALL_MODELS,
897
+ label="选择要运行的模型(可多选)",
898
+ info="默认全选8个模型,可取消不需要的"
899
+ )
900
+
901
+ gr.Markdown("### ⚙️ 参数设置")
902
+ enable_tuning = gr.Checkbox(value=True, label="启用超参数调优 (GridSearchCV)")
903
+ with gr.Row():
904
+ cv_folds = gr.Slider(minimum=3, maximum=10, value=5, step=1, label="交叉验证折数")
905
+ alpha = gr.Slider(minimum=0.01, maximum=0.10, value=0.05, step=0.01, label="DeLong显著性水平 α")
906
+ with gr.Row():
907
+ top_n = gr.Slider(minimum=5, maximum=50, value=20, step=1, label="SHAP前N个特征")
908
+ shap_samples = gr.Slider(minimum=30, maximum=200, value=80, step=10, label="SHAP采样数量")
909
+
910
+ run_btn = gr.Button("🚀 开始运行", variant="primary", size="lg")
911
+
912
+ with gr.Column(scale=1):
913
+ gr.Markdown("### 📋 运行日志")
914
+ log_output = gr.Textbox(label="实时日志", lines=25, max_lines=50, interactive=False)
915
+
916
+ gr.Markdown("### ⬇️ 结果下载")
917
+ zip_output = gr.File(label="下载结果 ZIP")
918
+
919
+ # Quick-select buttons
920
+ with gr.Row():
921
+ gr.Markdown("""
922
+ **💡 快捷模型组合:**
923
+ 点击下方按钮快速选择常用组合
924
+ """)
925
+
926
+ with gr.Row():
927
+ btn_all = gr.Button("全选", size="sm")
928
+ btn_tree = gr.Button("树模型 (RF+DT+XGB+AdaBoost)", size="sm")
929
+ btn_linear = gr.Button("线性模型 (LR+SVM+NB)", size="sm")
930
+ btn_top4 = gr.Button("经典四模型 (RF+XGB+LR+SVM)", size="sm")
931
+
932
+ btn_all.click(lambda: ALL_MODELS, outputs=model_selector)
933
+ btn_tree.click(lambda: ['RF', 'DT', 'XGB', 'AdaBoost'], outputs=model_selector)
934
+ btn_linear.click(lambda: ['LR', 'SVM', 'NB'], outputs=model_selector)
935
+ btn_top4.click(lambda: ['RF', 'XGB', 'LR', 'SVM'], outputs=model_selector)
936
+
937
+ # Run
938
+ run_btn.click(
939
+ fn=run_pipeline,
940
+ inputs=[train_file, val_file, model_selector, enable_tuning, cv_folds, alpha, top_n, shap_samples],
941
+ outputs=[zip_output, log_output],
942
+ show_progress="full"
943
+ )
944
+
945
+ if __name__ == "__main__":
946
+ demo.queue().launch(server_name="0.0.0.0", server_port=7860)
requirements.txt ADDED
@@ -0,0 +1,10 @@
 
 
 
 
 
 
 
 
 
 
 
1
+ numpy>=1.24.0
2
+ pandas>=2.0.0
3
+ matplotlib>=3.7.0
4
+ scikit-learn>=1.3.0
5
+ xgboost>=2.0.0
6
+ seaborn>=0.12.0
7
+ scipy>=1.11.0
8
+ shap>=0.43.0
9
+ openpyxl>=3.1.0
10
+ gradio>=4.0.0