Вот ошибка:
TypeError: object of type 'float' has no len().
Код:
from scipy.stats import randint as sp_randint
from sklearn.model_selection import RandomizedSearchCV
param_dist = {"max_depth":sp_randint(2,5),
"learning_rate":random.uniform(0,0.2),
"n_estimators":sp_randint(200,350),
"min_child_weight":sp_randint(2, 8),
"gamma":random.uniform(0,4),
"subsample":random.uniform(0.7,0.3),
"colsample_bytree":random.uniform(0.7,0.3),
"reg_alpha":random.uniform(100,300),
"reg_lambda":random.uniform(100,300)}
model_rs_xgb = RandomizedSearchCV(xgb.XGBClassifier(n_jobs=-1,random_state=25), param_distributions=param_dist,
n_iter=30,scoring='neg_log_loss',cv=5,n_jobs=-1)
model_rs_xgb.fit(X_train,y_train)
pickle.dump(model_rs_xgb,open('model_rs_xgb.p','wb'))