Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [feature-selection]

The tag has no usage guidance.

0
votes
0answers
2 views

Suitable reformulation of feature vector wherein the dimensions mismatch (one of them is a matrix and the other a repeated vector)

I have a set of $N=5000$ matrices of $\mathbb{R}^{64\times 64}$, whose entries are drawn from $x \in \{0,0.5,1\}$. We can visualise Matrix $M_1$ as Corresponding to this matrix $M_1$ and a vector ...
0
votes
1answer
43 views

Feature learning vs feature engineering vs feature learning and engineering

With the advancement of deep learning and a few others automated features learning techniques, manual feature engineering started becoming obsolete. Any suggestion on when to use manual feature ...
0
votes
1answer
19 views

Can an artificial network create a rule from rule components?

If an antecedent in a rule involves $m$ two-state features and results in consequences from a set of $n$ possible ones, we have $2^{m+n}$ permutations, which are, in a sense, be categories. If ...
0
votes
1answer
12 views

Problem extracting features from convolutional layer where the dimensions are big for feature maps

I have trained a convolutional neural network on images to detect emotions. Now I need to use the same network to extract features from the images and use the features to train an LSTM. The problem is:...
0
votes
0answers
7 views

What is the Significance of VGG16's Feature Dimensions?

I am using pre-trained VGG16 to extract features from small RGB images(299x299x3). I have successfully removed the top layer of the network to do this and have received features for each image that ...
1
vote
1answer
19 views

What is a good descriptor for similar objects?

I am developing an image search engine. The engine is meant to retrieve wrist watches based on the input of the user. I am using SIFT descriptors to index the elements in the database and applying ...
2
votes
2answers
37 views

How to recognize non-circular radial symmetry in images?

This is a question about pattern recognition and feature extraction. I am familiar with Hough transforms, the Fast Radial Transform and variants (e.g., GFRS), but these highlight circles, spheres, ...
4
votes
2answers
53 views

How can I minimize the number of answers that are relevant to a machine learning model?

Problem: We have a fairly big database that is built up by our own users. The way this data is entered is by asking the users 30ish questions that all have around 12 answers (x, a, A, B, C, ..., H). ...
9
votes
1answer
128 views

How do I select the relevant features of the data?

Recently I was working on a problem to do some cost analysis of my expenditure for some particular resource. I usually make some manual decisions from the analysis and plan accordingly. I have a big ...