How to correct this error?

2015 12 19
1 个回答
更新时间：2015 12 20
5 次查看（30 天）

0 个投票

http://blogs.mathworks.com/loren/2015/01/29/introduction-to-market-basket-analysis/#dd75d035-2129-4417-b848-b2725411df56
In this above mentioned blog, it has the code of what i have done. In that code, the below mentioned code of lines when executed showed the error :
Attempt to reference field of non-structure array.
Error in @(x)length(x.freqSets)
Below is the mentioned code:
minSup = 0.6; % minimum support threshold 0.6
[F,S] = findFreqItemsets(transactions,minSup);
fprintf('Minimum Support : %.2f\n', minSup)
fprintf('Frequent Itemsets Found: %d\n', sum(arrayfun(@(x) length(x.freqSets), F)))
fprintf('Max Level Reached : %d-itemsets\n', length(F))
fprintf('Number of Support Data : %d\n', length(S))
I have created a file named findFreqItemsets in the same path, which includes the following code.
function [F,S,items] = findFreqItemsets(transactions,minSup,oneItemsets)
F = -999999; % Default to -999999.
S = -1; % Default to -1.
items = struct('freqSets', []);
Why i am getting this error? How will i correct this error?
Are u sure matlab is not compatible? But in this blog, it is said that it's a matlab code.

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回答（1 个）

Walter Roberson
Walter Roberson 2015-12-20
编辑：Walter Roberson 2015-12-20

0 个投票

Sorry, MATLAB is not compatible with what you want to do. You will need to write your own code in some other computer language.

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Walter Roberson
Walter Roberson 2015-12-20
I did not say that the code in the blog is not MATLAB code: I said that MATLAB is not compatible with what you want to do. You want MATLAB to treat values as simultaneously being structures and non-structures. MATLAB is not able to do that. You will need to find a different programming language that implements RPM (Read Programmers Mind), or DWIWNWIS (Do What I Want Not What I Say).
... and please stop editing the question to make comments. Click on "Comment on this answer" instead.
PARVATHY P P
PARVATHY P P 2015-12-20
So is there any way to find frequent itemsets with this matlab code in some way? I need this code to work with matlab.
PARVATHY P P
PARVATHY P P 2015-12-20
编辑：PARVATHY P P 2015-12-20
I don't know how to find frequent itemsets from this transactions data, is there any other way to find this? Because i want the same thing that is actually given the blog to happen.

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PARVATHY P P
PARVATHY P P
2015-12-20

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