Getting error In SMOTE

I have tried the following code for SMOTE with input values .

separate m.file (func_smot.m)

function allData_smote = func_smot(allData, k,sortedIDX)

%% plot the bar plot for number of classes

figure

% barh(sortedIDX)

ylabel('4')

xlabel('2552,227,621,2555')

title('Original imbalance data distirbution')

%% number of each classes

labels=allData(:,end);

class=unique(sortedIDX);

for ii=1:numel(class)

classNo(ii)=numel(find(labels==class(ii)));

end

%% required addon samples in each minority class

%add on samples will be calculated by taking the difference of each

%classSamples with highest number of cla ss samples

maximumSamples=2555;

sampleClass=5955;

[maximumSamples,sampleClass]=max(classNo); % number of maximum samples

for ii=1:numel(class)

samplediff(ii)=maximumSamples-classNo(ii);

N (ii) = ceil(samplediff(ii)/ 100);

end

%% oversample the minority classes

allData_smote=[];

for ii=1:numel(class)

X=allData(labels==class(ii),:);

T = size(X, 1);

X_smote = X;

for i = 1:T

y = X(i,:);

% find k-nearest samples

[idx, ~] = knnsearch(X,y,'k',k);

% retain only N out of k nearest samples

idx = datasample(idx, N(ii));

x_nearest = X(idx,:);

x_syn = bsxfun(@plus, bsxfun(@times, bsxfun(@minus,x_nearest,y), rand(N(ii),1)), y);

X_smote = cat(1, X_smote, x_syn);

end

allData_smote=cat(1,allData_smote,X_smote);

end

%%

balanced_sortedIDX=allData_smote(:,end);

figure

barh(balanced_sortedIDX)

ylabel('4')

xlabel('2552,227,621,2555')

title('Balanced data distirbution')

%% randomize the data

shuffleindex=randperm(size(allData_smote,1));

allData_smote=allData_smote(shuffleindex,:);

end

separate m-file(mySMOTE.m)

your_allData = [5955,4];

your_k = 5;

your_sortedIdx = {'2552','227','621','2555'};

your_result = mySMOTE(your_allData,your_k,your_sortedIdx);

It is giving me this error

>> func_smot

Not enough input arguments.

Error in func_smot (line 9)

labels=allData(:,end);

Could anyone please help me. It would be greatly appreciated!

I appreciate your help in advance

Answer 1

[Voss]

It sounds like you are attempting to run func_smot.m by clicking the green arrow or hitting F5, but you mean to be running mySMOTE.m like that.

Also it seems like mySMOTE.m should call func_smot, rather than attempting to call itself. I've made that change to mySMOTE.m and attached it. (Attached func_smot.m is unchanged.)

Take that change to mySMOTE.m, and try running it using the green arrow or F5 or entering mySMOTE on the command line.

[Emma Skye]

Many thanks for your efforts, I appreciate it a lot..But i am still getting the same error

func_smot

>> Not enough input arguments.

Error in func_smot (line 9)

labels=allData(:,end);

[Voss]

I believe you should not be running func_smot by clicking the green arrow or hitting F5.

Instead you should be running mySMOTE.

mySMOTE will call func_smot with the input arguments specified in mySMOTE

% set up inputs for func_smot:
your_allData = [5955,4];
your_k = 5;
your_sortedIdx = {'2552','227','621','2555'};
% call func_smot with those inputs:
your_result = func_smot(your_allData,your_k,your_sortedIdx);

[Emma Skye]

Thanks a bunch !