• 关于 attribute 的搜索结果

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我推荐使用4个关联表来达到最灵活有效的实现。type 表id, nametype_attribute 表id, type_id(关联type表的id),name,...(可以定义一些属性,比如多选,必选之类)type_attribute_option 表id, attribute_id(关联type_attribute表的id),namerelation 表id, goods_id(商品的id),attribute_id(关联type_attribute的id),attribute_option(关联type_attribute_option的id)那么剩下的就很简单了。就按照你第二个例子里面的电影网站为例,type 顾名思义就是种类了,电影就是一种大的种类type_attribute 就是类型里面的一些属性,比如电影有类型,年代,地区,语言,属性什么的。type_attribute_option 就是这些属性的一些选项,比如年代有 2015,2014然后每个电影使用 relation 表来和 attribute 和 option 关联就可以了。

a123456678 2019-12-02 03:15:48 0 浏览量 回答数 0

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第一步:用特征表达问题 我们先把特征放入weka.core.FastVector中 每个特征都包含在weka.core.Attribute类中 现在我们有 两个numeric 特征,一个 nominal 特征 (blue, gray, black) 和一个 nominal 类 (positive, negative) // Declare two numeric attributes Attribute Attribute1 = new Attribute(“firstNumeric”); Attribute Attribute2 = new Attribute(“secondNumeric”); // Declare a nominal attribute along with its values FastVector fvNominalVal = new FastVector(3); fvNominalVal.addElement(“blue”); fvNominalVal.addElement(“gray”); fvNominalVal.addElement(“black”); Attribute Attribute3 = new Attribute(“aNominal”, fvNominalVal); // Declare the class attribute along with its values FastVector fvClassVal = new FastVector(2); fvClassVal.addElement(“positive”); fvClassVal.addElement(“negative”); Attribute ClassAttribute = new Attribute(“theClass”, fvClassVal); // Declare the feature vector FastVector fvWekaAttributes = new FastVector(4); fvWekaAttributes.addElement(Attribute1); fvWekaAttributes.addElement(Attribute2); fvWekaAttributes.addElement(Attribute3); fvWekaAttributes.addElement(ClassAttribute); 第二步:训练分类器 需要训练集实例和分类器 我们先创建一个空的训练集(weka.core.Instances) 命名这个关系为 “Rel”(相当于文件名字) 属性模型使用第一步中定义的vector定义 初始化训练集容量为10 定义类属性为第一步向量中的第四个(classindex) // Create an empty training set Instances isTrainingSet = new Instances("Rel", fvWekaAttributes, 10); // Set class index isTrainingSet.setClassIndex(3); 现在用一个实例来填充训练集 // Create the instance Instance iExample = new Instance(4); iExample.setValue((Attribute)fvWekaAttributes.elementAt(0), 1.0); iExample.setValue((Attribute)fvWekaAttributes.elementAt(1), 0.5); iExample.setValue((Attribute)fvWekaAttributes.elementAt(2), "gray"); iExample.setValue((Attribute)fvWekaAttributes.elementAt(3), "positive"); // add the instance isTrainingSet.add(iExample); 最后,选择一个分类器(weka.classifiers.Classifier)并创建模型,我们使用朴素贝叶斯分类器(weka.classifiers.bayes.NaiveBayes) // Create a naïve bayes classifier Classifier cModel = (Classifier)new NaiveBayes(); cModel.buildClassifier(isTrainingSet); 第三步:测试分类器 我们已经创建并训练了一个分类器,现在来测试这个分类器。我们需要一个评估模型(weka.classifiers.Evaluation),把测试集塞进去试试效果如何。 // Test the model Evaluation eTest = new Evaluation(isTrainingSet); eTest.evaluateModel(cModel, isTestingSet); 评估模型可以输出一系列统计数据 // Print the result à la Weka explorer: String strSummary = eTest.toSummaryString(); System.out.println(strSummary); // Get the confusion matrix double[][] cmMatrix = eTest.confusionMatrix(); 第四步:使用这个分类器 // Specify that the instance belong to the training set // in order to inherit from the set description iUse.setDataset(isTrainingSet); // Get the likelihood of each classes // fDistribution[0] is the probability of being “positive” // fDistribution[1] is the probability of being “negative” double[] fDistribution = cModel.distributionForInstance(iUse);

207471014295778924 2019-12-02 01:02:38 0 浏览量 回答数 0

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见下文 import xml.etree.ElementTree as ET xml = '''<annotations> <image height="940" id="0" name="90.jpg" width="1820"> <box label="Objects" occluded="1" xbr="255" xtl="0" ybr="624" ytl="509"> <attribute name="Class">Car</attribute> <attribute name="Occlusion %">25-50%</attribute> <attribute name="Truncation %">0%</attribute> </box> </image> </annotations>''' # # Find the attribute element (under box element) where the attribute name value is 'Class'. print the text of the element text # root = ET.fromstring(xml) print(root.find(".//box/attribute[@name='Class']").text) 回答来源:stackoverflow

is大龙 2020-03-23 21:30:49 0 浏览量 回答数 0

新手开公司,教你化繁为简

开公司到底有没有那么难,传统的手续繁琐,线下跑断腿,场地搞不定等问题,通过阿里云”云上公司注册“解决你的烦恼。

问题

如何在T-SQL中的特定单词后截断字符串?

心有灵_夕 2019-12-22 14:32:57 0 浏览量 回答数 0

问题

在Java中,有参构造方法里面一般用set好还是直接赋值好呢?

蛮大人123 2019-12-01 20:29:02 1229 浏览量 回答数 1

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这种错误应该不影响你的编译和运行的,只是提示而已;我这边也有这个提示;Information:Gradle tasks [:app:assembleDebug]Error:warning: Ignoring InnerClasses attribute for an anonymous inner classError:(com.tencent.mapsdk.rastercore.d.d) that doesn't come with anError:associated EnclosingMethod attribute. This class was probably produced by aError:compiler that did not target the modern .class file format. The recommendedError:solution is to recompile the class from source, using an up-to-date compilerError:and without specifying any "-target" type options. The consequence of ignoringError:this warning is that reflective operations on this class will incorrectlyError:indicate that it is not an inner class.Error:warning: Ignoring InnerClasses attribute for an anonymous inner classError:(ct.ac) that doesn't come with anError:associated EnclosingMethod attribute. This class was probably produced by aError:compiler that did not target the modern .class file format. The recommendedError:solution is to recompile the class from source, using an up-to-date compilerError:and without specifying any "-target" type options. The consequence of ignoringError:this warning is that reflective operations on this class will incorrectlyError:indicate that it is not an inner class.Error:warning: Ignoring InnerClasses attribute for an anonymous inner classError:(ct.k) that doesn't come with anError:associated EnclosingMethod attribute. This class was probably produced by aError:compiler that did not target the modern .class file format. The recommendedError:solution is to recompile the class from source, using an up-to-date compilerError:and without specifying any "-target" type options. The consequence of ignoringError:this warning is that reflective operations on this class will incorrectlyError:indicate that it is not an inner class.Error:warning: Ignoring InnerClasses attribute for an anonymous inner classError:(ct.m) that doesn't come with anError:associated EnclosingMethod attribute. This class was probably produced by aError:compiler that did not target the modern .class file format. The recommendedError:solution is to recompile the class from source, using an up-to-date compilerError:and without specifying any "-target" type options. The consequence of ignoringError:this warning is that reflective operations on this class will incorrectlyError:indicate that it is not an inner class.Information:BUILD SUCCESSFULInformation:Total time: 38.147 secsInformation:32 errorsInformation:0 warningsInformation:See complete output in console

悠索工作室 2019-12-01 23:22:23 0 浏览量 回答数 0

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可以在Model里select,但是id不能少,不然没有关联条件。`public function attribute() { return $this->hasMany('Attribute', 'attribute_id')->select('id','title'); }`

河南 2019-12-02 01:45:06 0 浏览量 回答数 0

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层次结构是: - view -backview -label1 -label2 -label3 // 设置水平布局 [backview addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"H:|[lab_before]-[lab_middle]-[lab_after]|" options:0 metrics:nil views:NSDictionaryOfVariableBindings(lab_before,lab_middle,lab_after)]]; // 设置backview宽度 [view addConstraint:[NSLayoutConstraint constraintWithItem:backview attribute:NSLayoutAttributeCenterX relatedBy:NSLayoutRelationEqual toItem:dynaContentView attribute:NSLayoutAttributeCenterX multiplier:1.0 constant:before_width+middle_width+after_width]]; // 设置backview居中显示 [view addConstraint:[NSLayoutConstraint constraintWithItem:backview attribute:NSLayoutAttributeCenterX relatedBy:NSLayoutRelationEqual toItem:dynaContentView attribute:NSLayoutAttributeCenterX multiplier:1.0 constant:0.0]]; // 设置backview的高度 [view addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"V:[backview(=

a123456678 2019-12-02 03:14:46 0 浏览量 回答数 0

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以下几句读完就明白了:This Boolean attribute indicates that the element is not yet, or is no longer, relevant. For example, it can be used to hide elements of the page that can't be used until the login process has been completed. The browser won't render such elements.Usage notes:This attribute must not be used to hide content that could legitimately be shown. For example, it shouldn't be used to hide tabs panels of a tabbed interface, as this is a styling decision and another style showing them would lead to a perfectly correct page.Hidden elements shouldn't be linked from non-hidden elements.Elements that are descendants of a hidden element are still active, which means that script elements can still execute and form elements can still submit.Changing the display CSS value of an element with the hidden attribute overrides the behavior. For instance, an element styled display: flex will be displayed on screen regardless of the hidden attribute being present.

a123456678 2019-12-02 02:23:11 0 浏览量 回答数 0

问题

Spring配置文件中DOCTYPE与<beans xmlns>冲突问题

小旋风柴进 2019-12-01 20:06:37 2834 浏览量 回答数 1

问题

实体-属性-值表设计?mysql

保持可爱mmm 2020-05-17 10:35:33 2 浏览量 回答数 1

问题

为什么不能加载placeholder与data-am-datepicker这两个属性

a123456678 2019-12-01 19:31:40 781 浏览量 回答数 1

问题

PublicCMS,截取字符的问题?报错

爱吃鱼的程序员 2020-06-08 10:00:34 0 浏览量 回答数 1

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为什么不能加载placeholder与data-am-datepicker这两个属性 css javascript 林里风咏 2015年05月08日提问

杨冬芳 2019-12-01 19:39:31 2055 浏览量 回答数 1

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请问iOS 怎么遍历,更新,删除约束?

爵霸 2019-12-01 20:14:17 699 浏览量 回答数 1

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HTML中布尔型属性的赋值问题

杨冬芳 2019-12-01 20:04:38 959 浏览量 回答数 1

问题

keepModel时抛出The model attribute user.password is not exists错误

小旋风柴进 2019-12-01 19:49:25 1130 浏览量 回答数 1

问题

java中的注解为什么总是报错? ?报错

爱吃鱼的程序员 2020-06-22 23:20:00 0 浏览量 回答数 1

问题

我正在尝试为jolt转换创建一个json,但是我对嵌套数组格式很迷惑

小六码奴 2019-12-01 19:59:54 4 浏览量 回答数 1

问题

scala如何参数化case类,并将case类变量传递给[T <:Product:TypeTag]

社区小助手 2019-12-01 19:29:03 582 浏览量 回答数 1

回答

getattr内建函数def getattr(object, name, default=None): # known special case of getattr """ getattr(object, name[, default]) -> value Get a named attribute from an object; getattr(x, 'y') is equivalent to x.y. When a default argument is given, it is returned when the attribute doesn't exist; without it, an exception is raised in that case. """

一码平川MACHEL 2019-12-02 02:02:41 0 浏览量 回答数 0

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那你可以获得这个category_attribute_search_response这个属性下的值拿去toBean啊 Java code String json=你的json字符串; JSONObject jsonObject=JSONObject.fromObject(json); json=jsonObject.getString("category_attribute_search_response"); 你的类型 object=(你的类型)JSONObject.toBean(json,你的class);

游客bnlxddh3fwntw 2020-04-23 21:43:14 0 浏览量 回答数 0

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For reasons of backwards compatibility, the returned set of anchors only contains those anchors created with the name attribute, not those created with the id attribute.所以document.anchors只会返回有name属性的节点。 另外,这种方式已经废弃,最好不要使用 This feature has been removed from the Web standards. Though some browsers may still support it, it is in the process of being dropped. Do not use it in old or new projects. Pages or Web apps using it may break at any time.

a123456678 2019-12-02 02:06:12 0 浏览量 回答数 0

问题

Laravel 关联查询只获取管理对象的部分数据

河南 2019-12-01 19:51:17 1542 浏览量 回答数 1

问题

启动tomcat运行项目异常 Caused by: java.lang.Error: Unresolved compilation problems

落地花开啦 2019-12-01 19:34:28 3305 浏览量 回答数 1

问题

Android studio在运行代码时总会报错?报错

爱吃鱼的程序员 2020-06-08 13:57:16 0 浏览量 回答数 1

回答

目测是被设置了 immutable 属性。试试:$ lsattr some_file----i--------e- some_file如果有这个 i 的话,sudo chattr -i some_file 干掉它,然后就可以修改了。A file with the `i' attribute cannot be modified: it cannot be deleted or renamed, no link can be created to this file and no data can be written to the file. Only the superuser or a process possessing the CAPLINUXIMMUTABLE capability can set or clear this attribute.

a123456678 2019-12-02 02:53:08 0 浏览量 回答数 0

回答

目测是被设置了 immutable 属性。试试:$ lsattr some_file----i--------e- some_file如果有这个 i 的话,sudo chattr -i some_file 干掉它,然后就可以修改了。A file with the `i' attribute cannot be modified: it cannot be deleted or renamed, no link can be created to this file and no data can be written to the file. Only the superuser or a process possessing the CAPLINUXIMMUTABLE capability can set or clear this attribute.

a123456678 2019-12-02 02:51:27 0 浏览量 回答数 0

问题

model.save()报错The attribute name is not ?报错

爱吃鱼的程序员 2020-06-22 15:00:14 0 浏览量 回答数 1

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标签体外怎么获取标签变量?报错

爱吃鱼的程序员 2020-06-14 17:27:18 0 浏览量 回答数 1
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