问题描述
我正在尝试制作一个非二进制学习树，这是ID3算法的简化版本。为了做到这一点，我尝试使用枚举，因为有几个参考教导枚举层次结构，但是我有麻烦将枚举传递给我需要的功能。我尽可能地尽可能地设置了我需要的一切树，但是我在树的初始构建中遇到困难。
I'm trying to make a non-binary learning tree that's a simplified version of the ID3 algorithm. To do this, I tried to use enums, because there are several references teaching enum hierarchies, but I'm having trouble with the transfer of enums to the functions I need to make the tree. I've set up everything I need for the tree as best as I could, but I'm having trouble with the initial construction of the tree.
首先，我做了六个枚举，每个都有自己的文件，所以我不需要写main.enumname无处不在。这些前五个枚举代表汽车诊断。
First, I made six enums, each with their own file so I wouldn't need to write "main.enumname" everywhere. These first five enums represent car diagnostics.
public enum fuelstats {notempty, empty}
public enum lightstatus {Dim, Normal}
public enum scents {normal, gas}
public enum soundstatus {Normal, Howl, Screech, Click}
public enum turn {no, yes}
接下来，我再创建了两个枚举。一个用于不同的诊断结果，一个用于汽车诊断的不同主题。
Next, I made two more enums. One for the different diagnostic results, and one for the different "topics" of car diagnostics.
public enum problems {battery, starter, solenoid, outofgas, flooding}
public enum features {lightstatus, soundstatus, fuelstats, scents, turn, problems}
然后，我在树中提供了不同汽车诊断的五个数据示例。
I then made five data examples of different car diagnostics to be sorted in the tree.
Example example1 = new Example(lightstatus.Dim, soundstatus.Howl, turn.yes, fuelstats.notempty, scents.normal, problems.battery);
Example example2 = new Example(lightstatus.Normal, soundstatus.Screech, turn.no, fuelstats.notempty, scents.normal, problems.starter);
Example example3 = new Example(lightstatus.Normal, soundstatus.Click, turn.no, fuelstats.notempty, scents.normal, problems.solenoid);
Example example4 = new Example(lightstatus.Normal, soundstatus.Normal, turn.yes, fuelstats.empty, scents.normal, problems.outofgas);
Example example5 = new Example(lightstatus.Normal, soundstatus.Normal, turn.yes, fuelstats.notempty, scents.gas, problems.flooding);
//make an array list of Examples.
ArrayList<Example> Examples = new ArrayList<Example>();
Examples.add(example1);
Examples.add(example2);
Examples.add(example3);
Examples.add(example4);
Examples.add(example5);
我将各种汽车诊断功能（称为功能）放在ArrayList中，用于混洗，因为它们将随机用于构建树。
I put the various car diagnostics, called Features, in an ArrayList for shuffling purposes, because they will be randomly used to build the tree.
//This ArrayList holds the Enums for shuffling purposes.
ArrayList<features> Features = new ArrayList<features>();
Features.add(features.soundstatus);
Features.add(features.lightstatus);
Features.add(features.turn);
Features.add(features.scents);
Features.add(features.fuelstats);
// Shuffle the elements in the list
Collections.shuffle(Features);
//The Features Array List is now a shuffled tree.
//We will do a single loop that will serve as our stack.
//First we take the top of the list and assign it to the root.
Tree id3 = new Tree(Features.get(0),Examples);
但是如何编写一个树：
使用一个功能枚举，根本匹配枚举的主题，以及枚举的所有不同状态的孩子？例如，如果soundstatus是根，应该使四个孩子是Normal，Howl，Screech和Click。这样我可以将示例声音与孩子的声音相匹配。这是我的节点到目前为止。
But how do I write a tree that:Takes in a feature enum that makes the subject of the root match the enum, and all of the different statuses of the enum the children? For example, if soundstatus is the root, it should make four children that are Normal, Howl, Screech, and Click. That way I can match the Example sounds with the children sounds. This is my node so far.
public class Node
{
ArrayList<Node> children;
/* Constructor*/
public Node(ArrayList<Node> ExampleList)
{
this.ExampleList = ExampleList;
this.parent = parent;
this.children = children;
}
public ArrayList<Node> getChildren()
{
return children;
}
public void addChild(Node n)
{
children.add(n);
}
private ArrayList<Node> children;
Enum phrase;
private boolean isUsed;
Node parent;
public void setUsed(boolean isUsed)
{
this.isUsed = isUsed;
}
public boolean isUsed()
{
return isUsed;
}
//This method states if the node is a leaf
public boolean isLeaf()
{
if (this.getChildren() == null)
return true;
else
return false;
}
}
推荐答案
我有一个类似的问题，构建枚举的层次结构。但在我的情况下，类的层次也可以做到这一点。如果你有兴趣的话是我的帖子：
I had a similar problem, building an hierarchy of enums. But in my case, an hierarchy of classes could also do the trick. In case you are interested here is my post:How to build an hierarchy tree of categories in java using enums or any other way?
现在，关于只有枚举层次结构，正如你可以在我的帖子中看到的，我发现这可能适用于你：
Now, concerning only enum hierarchy, as you can see on my post, I found this that may work for you:
http://alexradzin.blogspot.hk/2010/10/hierarchical-structures-with-java-enums_05.html
特别是：
public enum OsType {
OS(null),
Windows(OS),
WindowsNT(Windows),
WindowsNTWorkstation(WindowsNT),
WindowsNTServer(WindowsNT),
Windows2000(Windows),
Windows2000Server(Windows2000),
Windows2000Workstation(Windows2000),
WindowsXp(Windows),
WindowsVista(Windows),
Windows7(Windows),
Windows95(Windows),
Windows98(Windows),
Unix(OS) {
@Override
public boolean supportsXWindows() {
return true;
}
},
Linux(Unix),
AIX(Unix),
HpUx(Unix),
SunOs(Unix),
;
private OsType parent = null;
private OsType(OsType parent) {
this.parent = parent;
}
我希望它有帮助！
这篇关于ID3 Java枚举树的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！