import joblib joblib.(models[0], './logistic_model.m')
时间: 2024-05-13 12:17:30 浏览: 32
这段代码中有语法错误,应该是:
```
import joblib
joblib.dump(models[0], './logistic_model.m')
```
这段代码使用了 `joblib` 库中的 `dump` 函数将 `models[0]` 对象保存到当前目录下的 `logistic_model.m` 文件中。注意,这里假设 `models` 是一个模型列表,而 `models[0]` 是其中的第一个模型。如果 `models` 是一个单独的模型对象,那么可以直接使用 `joblib.dump(models, './logistic_model.m')` 将其保存到文件中。
相关问题
from sklearn.linear_model import LogisticRegression from sklearn.ensemble import RandomForestClassifier from sklearn.svm import SVC from sklearn.metrics import classification_report from sklearn.metrics import roc_auc_score from sklearn.metrics import accuracy_score import datetime from time import time models = [RandomForestClassifier(random_state=123, min_samples_split=3, min_samples_leaf=0.01, max_depth=5), LogisticRegression(random_state=123), SVC(kernel='rbf',gamma='auto',random_state=123,probability=True)] # 训练 for model in models: time0=time() model.fit(X_train, y_train) y_pred = model.predict(X_test) accuracy = accuracy_score(y_test, y_pred) rf_roc_auc = roc_auc_score(y_test,y_pred) print(type(model).__name__, 'accuracy:', accuracy) print('======='*10) print(type(model).__name__, 'roc:', rf_roc_auc) print('======='*10) print(classification_report(y_test, y_pred,target_names=['良性', '恶性'])) print('======='*10)代码解释
这段代码使用了三种分类器(RandomForestClassifier, LogisticRegression, SVC)对数据进行训练和预测,并输出了各自的准确率(accuracy)、ROC曲线下的面积(rf_roc_auc)以及分类报告(classification_report)。
具体解释如下:
1. 导入需要的库和模块:
```python
from sklearn.linear_model import LogisticRegression
from sklearn.ensemble import RandomForestClassifier
from sklearn.svm import SVC
from sklearn.metrics import classification_report
from sklearn.metrics import roc_auc_score
from sklearn.metrics import accuracy_score
import datetime
from time import time
```
2. 定义三个分类器模型:
```python
models = [RandomForestClassifier(random_state=123,
min_samples_split=3,
min_samples_leaf=0.01,
max_depth=5),
LogisticRegression(random_state=123),
SVC(kernel='rbf',gamma='auto',random_state=123,probability=True)]
```
其中,RandomForestClassifier是随机森林分类器模型,LogisticRegression是逻辑回归分类器模型,SVC是支持向量机分类器模型。
3. 训练和预测:
```python
for model in models:
time0=time()
model.fit(X_train, y_train)
y_pred = model.predict(X_test)
accuracy = accuracy_score(y_test, y_pred)
rf_roc_auc = roc_auc_score(y_test,y_pred)
print(type(model).__name__, 'accuracy:', accuracy)
print('======='*10)
print(type(model).__name__, 'roc:', rf_roc_auc)
print('======='*10)
print(classification_report(y_test, y_pred,target_names=['良性', '恶性']))
print('======='*10)
```
其中,for循环遍历三个模型,对每个模型进行训练和预测,并输出准确率、ROC曲线下的面积和分类报告。其中,time()函数用于计算训练时间。
from gensim.models import word2vec model = word2vec.Word2Vec.load('C:\\Users\\86157\\Desktop\\Course\\AI\\model_300dim.pkl') from mol2vec.features import mol2alt_sentence,mol2sentence, MolSentence ,DfVec, sentences2vec data['sentence'] = data.apply(lambda x:MolSentence(mol2alt_sentence(x['mol'],1)),axis =1) data['mol2vec'] = [DfVec(x) for x in sentences2vec(data['sentence'], model, unseen='UNK')] X_mol = np.array([x.vec for x in data['mol2vec']]) X_mol = pd.DataFrame(X_mol) X_mol.columns = X_mol.columns.astype(str) new_data = pd.concat((X,X_mol),axis = 1) x_train,x_test,y_train,y_test = train_test_split(new_data,y ,test_size=.20 ,random_state = 1) x_train = StandardScaler().fit_transform(x_train) x_test = StandardScaler().fit_transform(x_test) lr = LogisticRegression(max_iter=10000) lr.fit(x_train,y_train) evaluation_class(lr,x_test,y_test) rf=RandomForestClassifier(max_depth=4,random_state=0) rf.fit(x_train,y_train) evaluation_class(rf,x_test,y_test) sm = svm.SVC(gamma='scale',C=1.0,decision_function_shape='ovr',kernel='rbf',probability=True) sm.fit(x_train,y_train) evaluation_class(sm,x_test,y_test)
这段代码是在使用mol2vec方法提取药物分子的特征,并将提取的特征与之前使用的化学描述符特征进行合并,然后使用LogisticRegression、RandomForestClassifier和SVM三种模型进行药物筛选预测。其中,使用了word2vec模型对分子进行编码,得到分子的mol2vec特征,将其与之前提取的化学描述符特征进行合并,并使用ROC曲线和AUC值进行模型性能评估。请问你还有什么问题需要我解答吗?
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