NCA
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Accept 5 answers given by other contributors
Awarded to NCA on 19 Jul 2021
Solve a problem for the first time
Awarded to NCA on 21 Feb 2021
Feeds
Frage
Can I plot Confusion Matrix for a One Class SVM prediction
I trained a model with One Class SVM using only one class A.I am testing with a dataset that has both classes in it (Class A and...
3 Monate vor | 1 Antwort | 0
1
AntwortFrage
How to interpret Anomaly Scores for One Class Support Vector Machines
I am using One Class Support Vector Machines for anomaly detection. Here is the anomaly scores histogram (attached) for the mode...
3 Monate vor | 2 Antworten | 0
2
AntwortenFrage
I built a cross-validated SVM model with fitcsvm but I cant seem to use "predict" to predict responses from a new data with the model
Hi there I built a cross validated and Bayesian Optimised model (CValidated_SVMModel_for_AUC1) with Support Vector Machines (SV...
5 Monate vor | 1 Antwort | 0
1
AntwortFrage
How to interpret and determine clusters in SOM Neighbour Distance Plot
I need help interpreting and identifying clusters in the attached SOM Neighbour Distance plot. I am not sure how to determine th...
mehr als ein Jahr vor | 1 Antwort | 0
1
AntwortFrage
How to get the exact samples inside SOM neurons
I have abalysed my data using neural clustering for Self Otganising Maps from the Neural Net Clustering from Machine Learning an...
mehr als ein Jahr vor | 1 Antwort | 0
1
AntwortFrage
How to cluster data with multiple classes with SOM and colour the map
My data has 1700 rows (samples) and 186 predictors. I have 52 different groups or classes (Grp 1, 2, 5, 23, etc up to 52) to clu...
mehr als ein Jahr vor | 1 Antwort | 0
1
AntwortFrage
How to use various combinations of samples to build model
I am trying to use different combinations of the samples in my data(X) on each iteration to build a SVR model with fitrsvm until...
mehr als ein Jahr vor | 1 Antwort | 0
1
AntwortFrage
How to select samples to leave out when building my regression model and automate it
I am using fitrsvm (Support Vector Regression) on my data matrix (I have attached an excel example version of it). I have abou...
fast 2 Jahre vor | 1 Antwort | 0
1
AntwortFrage
How to predict responses of new data from a crossvalidated SVR model
Hi there I have trained and cross validated my Support Vector Machine regressor model (CValidated_Mdl) with KFold cross validat...
fast 2 Jahre vor | 1 Antwort | 0
1
AntwortFrage
How do I match corresponding rows of class labels to data
I have 838 by 400 matrix as my data, I also have a 275 by 2 file which contains my class labels but they are not organised to m...
mehr als 2 Jahre vor | 1 Antwort | 0
1
AntwortFrage
How do I average a matrix in steps but they are not all in equal steps
I have a matrix of 2214 by 8001, the absorbances were measured 5 times for each sample but some signals were were not good enou...
mehr als 2 Jahre vor | 1 Antwort | 0
1
AntwortFrage
I have a data in cell array of 1330 rows x 401 columns, I want to take the mean in steps of 5 and have the new matrix as 266 x 401 instead of 1330 x 410.Thanks for your help
I have a data in cell array of 1330 rows x 401 columns, I want to take the mean in steps of 5 and have the new matrix as 266 x 4...
mehr als 2 Jahre vor | 1 Antwort | 0
1
AntwortFrage
What type of cross validation to use if my data has 5 scans per sample to avoid having same sample in train and test set
My data (150 samples) has 5 NIR scans per sample. I am not able to average the 5 scans because some of them were taken out as t...
mehr als 2 Jahre vor | 1 Antwort | 0
1
AntwortFrage
How to get DBSCAN to assign the items to the clusters found
I have used DBSCAN on MATLAB R2021 to cluster my data into 3 groups. I want to be able to get DBSCAN to actually assign and name...
mehr als 3 Jahre vor | 1 Antwort | 0
1
AntwortFrage
New variables after computing Principal Components Analysis
After computing principal components analysis, what will represent my new variables to be used to build my model , is it the sco...
mehr als 3 Jahre vor | 2 Antworten | 0
2
AntwortenFrage
How do I normalize Area under curve of NIR spectra to 1
How do I normalize Area Under Curve of NIR spectra to 1 using Matlab 2020b please? Thank You
mehr als 3 Jahre vor | 1 Antwort | 0
1
AntwortFrage
How to read multiple .spc files
Hi there Please can someone help me with this I am using tgspcread to open/read my spectral data files I need to read 222 .sp...
mehr als 3 Jahre vor | 2 Antworten | 0
2
AntwortenFrage
I am not sure why my if statement code is not working
I have this code which omits the first two conditions and executes the last one , can you please have a look as I have tried it ...
mehr als 3 Jahre vor | 1 Antwort | 0
1
AntwortGelöst
Times 2 - START HERE
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...
fast 4 Jahre vor
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