Matlab 删除我的值(value)观

Question

我正在 Matlab 上编写一个 OOP，一个用于分离电子邮件的朴素贝叶斯。像这样

 classdef NaiveClass

%NaiveClass what this will do is hold on his emails
% the p(message|class) compute the probability 
% have the specific class info as well as who are they brothers
%   

properties
    name
    numberOfMail
    laplaceCounts
    uniqueWords
    totalMails
    totalWords
    likelihoodGivenClass
    prior
end

methods
    function identify(thisNaiveClass)
        disp('I''m a bayes node')
    end

    function set = setPrior(obj)

        obj.prior = (obj.numberOfMail + 1) / (obj.totalMails + obj.laplaceCounts)

    end

    function like = setLikelihood(this)

        this.likelihoodGivenClass = (1 + 1) / (this.totalWords + 17)

    end

 end

end

但每次我调用函数 setPrior 或 setLikelihood 之前的值都会从另一个、可能性或先验值中删除，如下所示:

>> setLikelihood(bayes)
this = 
NaiveClass

Properties:
                name: 'Primary'
        numberOfMail: 3
       laplaceCounts: 4
         uniqueWords: []
          totalMails: 12
          totalWords: 8
likelihoodGivenClass: 2/25
               prior: []
Methods 

然后另一个调用:

setPrior(bayes)
obj = 
NaiveClass

Properties:
                name: 'Primary'
        numberOfMail: 3
       laplaceCounts: 4
         uniqueWords: []
          totalMails: 12
          totalWords: 8
likelihoodGivenClass: []
               prior: 1/4
Methods

那这是什么？谢谢。

Answer 1

你应该听听 Mlint:

您正在使用该类，就好像它是一个引用，但它不继承自 handle。快速修复:

 classdef NaiveClass < handle

然后阅读:http://www.mathworks.de/de/help/matlab/matlab_oop/comparing-handle-and-value-classes.html