要点是,您的 实例模拟标准 Scikit-Learn 分类器。换句话说,它是 scikit-learn beast ,而且它不提供方法 .evaluate()
。
因此,您可能只会调用 best_model.score(x_test,y_test)
,它将自动返回准确性,因为标准的Sklearn分类器会返回。另一方面,您可以通过历史记录_
kerasclassifier
实例访问培训期间获得的损失值。
这是一个示例:
!pip install scikeras
from sklearn.datasets import make_classification
from sklearn.model_selection import train_test_split, cross_validate, KFold
import tensorflow as tf
import tensorflow.keras
from tensorflow.keras.layers import Dense
from tensorflow.keras.models import Sequential
from scikeras.wrappers import KerasClassifier
X, y = make_classification(n_samples=100, n_features=20, n_informative=5, random_state=42)
X_train, X_test, y_train, y_test = train_test_split(X, y, test_size=0.2, random_state=42)
def build_nn():
ann = Sequential()
ann.add(Dense(20, input_dim=X_train.shape[1], activation='relu', name="Hidden_Layer_1"))
ann.add(Dense(1, activation='sigmoid', name='Output_Layer'))
ann.compile(loss='binary_crossentropy', optimizer= 'adam', metrics = 'accuracy')
return ann
keras_clf = KerasClassifier(model = build_nn, optimizer="adam", optimizer__learning_rate=0.001, epochs=100, verbose=0)
kfold = KFold(n_splits=10)
scoring = ['accuracy', 'precision', 'recall', 'f1']
results = cross_validate(estimator=keras_clf, X=X_train, y=y_train, scoring=scoring, cv=kfold, return_train_score=True, return_estimator=True)
best_model = results['estimator'][2]
# accuracy
best_model.score(X_test, y_test)
# loss values
best_model.history_['loss']
最终观察到,如有疑问,您可以调用 dir(object)
获取指定对象的所有属性和方法的列表( dir(best_model)
在您的情况下)。
您需要每个URL实例化一个WebClient。对于每个WebClient,您可以设置连接超时:
HttpClient httpClient = HttpClient.create()
.option(ChannelOption.CONNECT_TIMEOUT_MILLIS, 10000);
WebClient client = WebClient.builder()
.baseUrl("http://yourendpoint:8080")
.clientConnector(new ReactorClientHttpConnector(httpClient))
.build();
然后将此网络电量重复使用为已配置的URL的所有调用。
我们在本地苹果中复制了此问题,并试图在info.plist中添加uibackgroundModes“ audio”和“ voip”,以查看它们是否有所作为。
不幸的是,他们没有。因此,这是一个Apple / Webkit问题。我们在苹果论坛上找到了一个线程,讨论了WKWebView中的WebRTC应用程序:。
另外,还有一个webkit错误报告: 233419 - wkwebview microphone casscect out Backgack not (webkit.org)。因此,请跟进他们。
这不是答案,而是处理DB2例外的建议,以解决此类错误。
如果您无法重写错误处理,那么您唯一可以的事情就是在客户端上启用JDBC跟踪或/并将DB2 DBM CFG Diaglevel
参数设置为4。
PreparedStatement pst = null;
try
{
pst = ...;
...
int [] updateCounts = pst.executeBatch();
System.out.println("Batch results:");
for (int i = 0; i < updateCounts.length; i++)
System.out.println(" Statement " + i + ":" + updateCounts[i]);
} catch (SQLException ex)
{
while (ex != null)
{
if (ex instanceof com.ibm.db2.jcc.DB2Diagnosable)
{
com.ibm.db2.jcc.DB2Diagnosable db2ex = com.ibm.db2.jcc.DB2Diagnosable) ex;
com.ibm.db2.jcc.DB2Sqlca sqlca = db2ex.getSqlca();
if (sqlca != null)
{
System.out.println("SQLCODE: " + sqlca.getSqlCode());
System.out.println("MESSAGE: " + sqlca.getMessage());
}
else
{
System.out.println("Error code: " + ex.getErrorCode());
System.out.println("Error msg : " + ex.getMessage());
}
}
else
{
System.out.println("Error code (no db2): " + ex.getErrorCode());
System.out.println("Error msg (no db2): " + ex.getMessage());
}
if (ex instanceof BatchUpdateException)
{
System.out.println("Contents of BatchUpdateException:");
System.out.println(" Update counts: ");
System.out.println(" Statement.SUCCESS_NO_INFO: " + Statement.SUCCESS_NO_INFO);
System.out.println(" Statement.EXECUTE_FAILED : " + Statement.EXECUTE_FAILED);
BatchUpdateException buex = (BatchUpdateException) ex;
int [] updateCounts = buex.getUpdateCounts();
for (int i = 0; i < updateCounts.length; i++)
System.out.println(" Statement " + i + ":" + updateCounts[i]);
}
ex = ex.getNextException();
}
}
...
data.table
选项
setDT(df)[
,
lapply(
.SD,
function(x) {
unlist(
lapply(
seq_along(x),
combn,
x = x,
function(v) {
ifelse(all(is.character(v)), toString, sum)(v)
}
)
)
}
),
id
]
给出
id name number value
1: a bob 1 1
2: a jane 2 2
3: a bob, jane 3 3
4: b mark 1 1
5: b brittney 2 2
6: b mark, brittney 3 3
默认情况下,节点是单线线程,因此为“下一个开始”。我使用PM2群集模式,并且没有任何问题。
要启动群集,您要做以下:
- create pm2.json文件旁边的package.json
{
"apps": [
{
"name": "myNextApp",
"script": "node_modules/next/dist/bin/next",
"args": "start",
"cwd": "./",
"instances": "max",
"exec_mode": "cluster",
"out_file": "/var/log/myNextApp/myNextApp.log",
"error_file": "/var/log/myNextApp/myNextAppError.log",
"watch": "true"
}
]
}
pls注意“脚本”:“ node_modules/next/dist/dist/bin/next”如果您在接下来的thexcript中,则使用此config是6一个月大,也许您需要更改此行,检查
- 包装中的PM2文档。JSON添加:
{
...
"scripts: {
...,
"pm2": "pm2"
},
...,
}
-
添加DevDependencie PM2(YARN ADD -D PM2)
-
启动群集您应该能够使用:
npm run pm2 start pm2.json
or
yarn pm2 start pm2.json
从项目root
P.S.我对您是否需要将PM2添加到您的项目deps中有一些疑问,我认为使用NPM i -G和APT -GET安装YARN/PM2时会有一些差异,这可能会导致较轻的配置,但我不确定...
要获取随机数组项使用:
var item = charClasses[Math.floor(Math.random()*charClasses.length)];
选择项目使用:
$('#classMenu').val("item ");
您可以使用这样的按钮事件:
$('#btnRandom').click(function() {
var item = charClasses[Math.floor(Math.random()*charClasses.length)];
$('#classMenu').val(item);
});
代码从数组中选择一个随机值,然后放入变量项目中。接下来,在选择字段中选择项目。
使用 super().__ INT __()
方法时,您需要精确使用所继承的参数。即使在鳟鱼构造器内部,您也需要提及其所有参数,包括其继承的IE def __init __(self,first_name,last_name,water =“ freshwater”)
。因此,您的鳟鱼课应该看起来像下面的代码
class Trout(Fish):
def __init__(self, first_name, last_name, water="freshwater"):
self.water=water
super().__init__(first_name, last_name)
一个简单的可执行应用程序,该应用程序从
在此示例中,只有最后一个选项可以通过编程表明确保侦听器不会多次添加到同一阶段。
import javafx.application.Application;
import javafx.beans.property.ReadOnlyProperty;
import javafx.beans.value.ChangeListener;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.stage.Stage;
public class StageClosureApp extends Application {
private static final ChangeListener<Boolean> CLOSE_ON_FOCUS_LOSS_USING_BEAN_LISTENER =
(o, wasFocused, isFocused) -> {
if (!isFocused) ((Stage) ((ReadOnlyProperty<?>) o).getBean()).close();
};
private static ChangeListener<Boolean> closeOnFocusLossListener(Stage stage) {
return (o, wasFocused, isFocused) -> {
if (!isFocused) stage.close();
};
}
private static void closeOnFocusLoss(Stage stage) {
stage.focusedProperty().removeListener(CLOSE_ON_FOCUS_LOSS_USING_BEAN_LISTENER);
stage.focusedProperty().addListener(CLOSE_ON_FOCUS_LOSS_USING_BEAN_LISTENER);
}
@Override
public void start(Stage stage) {
// all options perform the same function (close the stage on losing focus).
// when testing, only enable one option, commenting the others out.
// option 1: use a closure to reference the stage in a lambda function defined inline.
stage.focusedProperty().addListener((o, wasFocused, isFocused) -> {
if (!isFocused) stage.close();
});
// option 2: pass the stage instance to a static listener generation function.
stage.focusedProperty().addListener(closeOnFocusLossListener(stage));
// option 3: get the stage from the bean in an inline lambda function.
stage.focusedProperty().addListener((o, wasFocused, isFocused) -> {
if (!isFocused) ((Stage) ((ReadOnlyProperty<?>) o).getBean()).close();
});
// option 4: use a single instance static change listener that get the stage from the bean.
stage.focusedProperty().addListener(CLOSE_ON_FOCUS_LOSS_USING_BEAN_LISTENER);
// option 5: update stage to add a focus loss listener when it is not focused (can safely be called multiple time for a stage)
closeOnFocusLoss(stage);
stage.setScene(new Scene(new Label("hello, world")));
stage.show();
}
public static void main(String[] args) {
launch();
}
}
如果阶段失去焦点是应用程序中显示的唯一阶段(如在这些测试用例中),则默认情况下,该应用程序将自动关闭,根据应用程序生命周期,一旦关注阶段就丢失了。
我不确定这个示例会增加Slaw的答案,但这可能很有用,因此我将暂时保留该帖子。
您可以使用
flutter_svg
package。使用非常简单。而不是像以下内容那样显示试剂图像:
Image.asset('path_to_img'),
您将使用:
SvgPicture.asset('path_to_svg.svg')
不要忘记在 pubspec.yaml
文件中添加SVG
因此,在尝试了一些问题之后,我发现了我自己的问题的2个解决方案,这些解决方案使用螺纹
。
1。修改 foo
函数
from time import sleep
from threading import Thread
x = True
def foo():
sleep(3)
global x
x = False
print('finished')
def printing():
while x:
print('Running')
foo_thread = Thread(target=foo)
foo_thread.start()
printing_thread = Thread(target=printing)
printing_thread.start()
2。使用装饰器保持 foo
不变
from time import sleep
from threading import Thread
x = True
def sets_true(func):
def wrapper():
returned_value = func()
global x
x = False
print('finished')
return wrapper
@sets_true
def foo():
sleep(3)
return True
def printing():
while x:
print('Running')
foo_thread = Thread(target=foo)
foo_thread.start()
printing_thread = Thread(target=printing)
printing_thread.start()
在源代码中看起来并不是这样,所有子命令当前均已明确注册( cf。):
// create subcommands
cmd.AddCommand(NewCmdCreateNamespace(f, ioStreams))
cmd.AddCommand(NewCmdCreateQuota(f, ioStreams))
cmd.AddCommand(NewCmdCreateSecret(f, ioStreams))
cmd.AddCommand(NewCmdCreateConfigMap(f, ioStreams))
cmd.AddCommand(NewCmdCreateServiceAccount(f, ioStreams))
cmd.AddCommand(NewCmdCreateService(f, ioStreams))
cmd.AddCommand(NewCmdCreateDeployment(f, ioStreams))
cmd.AddCommand(NewCmdCreateClusterRole(f, ioStreams))
cmd.AddCommand(NewCmdCreateClusterRoleBinding(f, ioStreams))
cmd.AddCommand(NewCmdCreateRole(f, ioStreams))
cmd.AddCommand(NewCmdCreateRoleBinding(f, ioStreams))
cmd.AddCommand(NewCmdCreatePodDisruptionBudget(f, ioStreams))
cmd.AddCommand(NewCmdCreatePriorityClass(f, ioStreams))
cmd.AddCommand(NewCmdCreateJob(f, ioStreams))
cmd.AddCommand(NewCmdCreateCronJob(f, ioStreams))
cmd.AddCommand(NewCmdCreateIngress(f, ioStreams))
cmd.AddCommand(NewCmdCreateToken(f, ioStreams))
return cmd
您可以创建一个虚拟类,该类没有do <代码>写方法。 ExitStack
用于确保自动关闭任何打开的文件。
from contextlib import ExitStack
class NoWrite:
def write(self, value):
pass
def myFunc(output1=None, output2=None):
X,Y = 0,0
with ExitStack() as es:
file1 = es.enter_context(open(output1, "w")) if output1 is not None else NoWrite()
file2 = es.enter_context(open(output2, "w")) if output2 is not None else NoWrite()
for i in range(1000):
X,Y = someCalculation(X, Y) #calculations happen here
file1.write(X)
file2.write(Y)
return X,Y
当您似乎正在记录 x
和/或 y
值时,您可能需要考虑使用 logging
模块,为适当的记录器创建 fileHandler
,而不是将输出文件名称为 myFunc
本身。
import logging
# configuration of the logger objects is the responsibility
# of the *user* of the function, not the function itself.
def myFunc():
x_logger = logging.getLogger("myFunc.x_logger")
y_logger = logging.getLogger("myFunc.y_logger")
X,Y = 0,0
for i in range(1000):
X,Y = someCalculation(X, Y)
x_logger.info("%s", X)
y_logger.info("%s", Y)
return X,Y
尝试
Try
拆分&lt; ul&gt;进入a&lt; table&gt;和a&lt; ul&gt;