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**Content Feed**

Question

I have N samples of training data and M samples of test data, how i combine it together to make it MxN samples.

testdata 40X1 cell traindat 80X1 cell train_label 80X1 double I have N samples of training data and M sample...

3 years ago | 1 answer | 0

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answerQuestion

how to manually adjust threshold value in PERFCURVE(LABELS,SCORES,POSCLASS)

I have 100 subjects, I used KNN classifier for classification, when i use perfcurve function for roc it automatically displays ...

3 years ago | 0 answers | 1

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answersQuestion

Undefined function 'sum' for input arguments of type 'cell'.

Undefined function 'sum' for input arguments of type 'cell'. Error in mean (line 116) y = sum(x, dim, flag)/size(x,d...

3 years ago | 0 answers | 0

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answersQuestion

error occured during fusion with GLCM and invarient moment feature

Here i combined(fused) two different type of features i.e invarient moment and GLCM. When i classify with individual invarient m...

3 years ago | 0 answers | 0

### 0

answersQuestion

Undefined function 'min' for input arguments of type 'struct'.

Undefined function 'min' for input arguments of type 'struct'. Error in mapminmax.create (line 12) xmin = nnet.array.saf...

3 years ago | 0 answers | 0

### 0

answersQuestion

Error during classification using SVM

Error using svmtrain (line 234) Y must be a vector or a character array. Error in inv_Moment_maintotaldemo (line 86) model=s...

3 years ago | 0 answers | 0

### 0

answersQuestion

how threshold value is determined in KNN classifier

i my research I obtained 97.33 accuracy bu using KNN classifier but i dont understand the role of threshold ? how the KNN decide...

3 years ago | 0 answers | 0

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answersQuestion

KNN classification accuracy problem

In my program accuracy is not increases I have given properly traning and testing input to knn classifier. I got following resul...

3 years ago | 0 answers | 0

### 0

answersQuestion

rename files from subfolders

I have a folder that contain 10 subfolders each subfolder contains 4 images named 1.bmp,2.bmp,3.bmp,4.bmp, I want to rename thos...

3 years ago | 1 answer | 0

### 1

answerQuestion

error while reading and selecting images randomly from multiple folders

I have a folder that contains 10 subfolders each subfolder contains 8 images, I want to dynamically select 5 images from each su...

3 years ago | 1 answer | 0

### 1

answerQuestion

error occured during selection of random images

Index exceeds matrix dimensions. Error in tt (line 18) fn = fullfile(P,D,F{ii}); clc; clear all; tic; %% T...

3 years ago | 1 answer | 0

### 1

answerQuestion

error during selecting dynamically image from folder

Error using randi First input must be a positive scalar integer value IMAX, or two integer values [IMIN IMAX] with IMIN less th...

3 years ago | 1 answer | 0

### 1

answerQuestion

how to evaluate filtered result of grayscale images

Sir, here I filtered grayimage using mean,median,gaussian,wiener filter but i dont know how to measure filtered results. In one...

3 years ago | 0 answers | 0

### 0

answersQuestion

Sir, I have calculated feature of dorsal hand vein using eiganvalue algorithm, features are stored in feature variable in following code this is for a single image i want to do the same operation on 10 images the how i can?

%% Detect feature points and show the 50 strongest ones by eiganvalue algorithm % Find Corner Points Using the Eigenvalue Algor...

4 years ago | 2 answers | 0

### 2

answersQuestion

How to calculate ROC Cureve with following value

FAR, FRR, Accuracy, EER, Threshold 9.807...

4 years ago | 0 answers | 0

### 0

answersQuestion

Following is the error while calculating FAR FRR

Please see the attachment herewith of my program, cosine distance is calculated or not I dont understand beca...

4 years ago | 0 answers | 0

### 0

answersQuestion

Following is the error while calculating cosine distance

Following is the error while calculating cosine distance.... Conversion to cell from double is ...

4 years ago | 1 answer | 0

### 1

answerQuestion

Error while calculating Cosine distance

Following is the error while calculating Cosine distance.... Subscripted assignment dimension mismatch. Error in C...

4 years ago | 1 answer | 0

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answerQuestion

Error in extract_db (line 47) file_a = extractAfter(char(file_a), 0, strfind(char(file_a), '_')-2);

'101_1.tif' '101_2.tif' '101_3.tif' '101_4.tif' '101_5.tif' '101_6.tif' '101_7.tif' '101_8.tif' '102_1.tif' '102_2.tif' '102_3.t...

4 years ago | 1 answer | 0

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answerQuestion

Undefined function 'substring' for input arguments of type 'char'. Error in extract_db (line 45) file_a = substring(char(file_a), 0, findstr(char(file_a), '_')-2);

What is the substitute function to evaluate file_a = substring(char(file_a), 0, findstr(char(file_a), '_')-2); because this fun...

4 years ago | 1 answer | 0

### 1

answerQuestion

Getting recognition rate 3.25 only. How to improve recognition rate?

After applying test and training sets with Euclidean distance, I am getting a recognition rate of 3.25 in my program. How do I...

4 years ago | 0 answers | 0

### 0

answersQuestion

Error using svmtrain (line 234) Y must be a vector or a character array.

Error using svmtrain (line 234) Y must be a vector or a character array.

4 years ago | 0 answers | 0

### 0

answersQuestion

Following is the error in my program while calculating ROC

I have attached my program files Index exceeds matrix dimensions. Error in ROC (line 16) selfVerification(i) ...

4 years ago | 0 answers | 0

### 0

answersQuestion

Where to make change in my program to get output like figure 2

I have calculated the Euclidean distance of matrix but am not getting correct ROC-like in fig 2. I have attached my program ...

4 years ago | 0 answers | 0

### 0

answersQuestion

how to store values in second column of cell array

In the following program, I get the value 200 X 1 after reshaping function, I want to store ground truth a label like 1 1 1 1 1 ...

4 years ago | 1 answer | 0

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answerQuestion

how to store data in cell array

I have 40 folders and each folder having 10 images, I have written one program for reading first five images from 40 fold...

4 years ago | 1 answer | 0

### 1

answerQuestion

How to find the threshold value from KNN classification

Hi all, I want to ask that I have total 100 classes [1,2,3,4,5......100] One class having 12 samples from which 8 sample...

4 years ago | 0 answers | 0

### 0

answersQuestion

Following is the error in my program

Index exceeds matrix dimensions. Error in threshold (line 13) correctMinimum(j) = allMinimum(i); Error in kn...

4 years ago | 0 answers | 0

### 0

answersQuestion

sir, can you please help me to convert this python code into matlab

#false positive rate,fpr= FP/(TN+FP) OR fpr=1-specificty, tpr=sensitivity y_pred_knn_p =knn.predict_proba(X_test)[:,1] ...

4 years ago | 1 answer | 0

### 1

answerQuestion

Sir, how to calculate EER equal error rate for the following data

respected sir, I have used following formula for calculating false acceptance rate FAR and FRR FAR=FP/(FP+TN) FR...

4 years ago | 1 answer | 0