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Elena Casiraghi


Università degli Studi di Milano

16 total contributions since 2018

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Question


Hyper-parameter optimization
1) When training an ECOC classifier for multiclass classification, with knn as base learner, how can I change the minimized func...

environ 23 heures ago | 0 answers | 0

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answers

Question


Hyperparameter optimization for ECOC: how can I choose the variables to be minimized?
1) When training an ECOC classifier for multiclass classification, with knn as base learner, I would like to optimize only the N...

environ 23 heures ago | 0 answers | 0

0

answers

Question


Hyperparameter Optimization in ECOC classifier: which loss function is used?
Dear, I'm training an ECOC classifier using knn as the base classifier. I would like to use the option 'OptimizeHyperparameters...

2 jours ago | 1 answer | 0

1

answer

Question


Cost in fitcecoc input
Dear, I'm trying to train an ecoc model using svm as base classifiers. Since the data in X is unbalanced, I would like to use ...

29 jours ago | 1 answer | 1

1

answer

Question


str2num strange behaviour
Dear, I have this code: svmKernel ={'rbf','gaussian', 'linear','2','3','4'}; for k=1:numel(svmKernel) [p, status] = str2n...

environ un mois ago | 1 answer | 0

1

answer

Question


Custom Classification Loss: which is the role of S?
Dear, I have a classification problems with labels 1,..,5. Since the label is a score related to a grade, I would to compute t...

environ un mois ago | 1 answer | 0

1

answer

Question


How to train fitcecoc by using COST SENSITIVE SVM
Dear, I have a multiclass problem with an highly unbalanced dataset. How can I train a multiclass, error-correcting output code...

environ un mois ago | 1 answer | 1

1

answer

Question


Doubts about cross-validation
I'm trying to test performance of a KNN and a svm (cecoc) classifier for a multiclass problem. For the knn model I do it by bui...

environ un mois ago | 1 answer | 0

1

answer

Question


How can I set the colors in the legend if I show a number of legend elements which is lower thatn the number of plotted functions?
Dear, I'm trying to do a bar chart as the attached one (and shown below). As you can see, the bar chart contains, for six diffe...

environ un mois ago | 2 answers | 0

2

answers

Answered
I need to write a GUI that shows an image and allows to draw on it by selecting different colors
Here you get the code. The code starts with CorrectMarkersLater, which calls correctMarkersNow, which calls pointsInPoly. The...

4 mois ago | 0

Answered
I need to write a GUI that shows an image and allows to draw on it by selecting different colors
I found that indeed imfreehand let's me chose the color, however, if I zoom in it goes off :\

4 mois ago | 0

Answered
I need to write a GUI that shows an image and allows to draw on it by selecting different colors
Thanks, I'll try to proceed based on that. But I can't change the color of the drawing right? Can I let the user draw more than...

4 mois ago | 0

Question


I need to write a GUI that shows an image and allows to draw on it by selecting different colors
I was looking at the 45 sample GUIs I need something similar to that shown in GUI 39. The only difference is that the drawing ...

4 mois ago | 4 answers | 0

4

answers

Question


IMREAD Error opening TIF files
Dear, while rading a TIF file, I get this error TIFF library error - 'TIFFFetchNormalTag: Incorrect count forr "ImageDepth".' W...

4 mois ago | 1 answer | 0

1

answer

Question


BioFormat for matlab and svs images
Dear all does anyone know how can i open an svs image by using bioformat? My images have 4 planes: * image at the maxim...

12 mois ago | 0 answers | 0

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answers

Question


How can I show a big image to the user, and let him zoom on it to click on specified points?
Hello I'm showing images (with a huge size) to the user, and he must selct pixels from it. However, selection must be precise ...

environ un an ago | 1 answer | 0

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