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Questions tagged [feature-selection]

The tag has no usage guidance.

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2answers
34 views

How to analyze data before going for machine learning training?

For example, I have the following csv: training.csv I want to know how I can determine which column will be the best feature for getting the output prediction before I go for machine training. Please ...
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3answers
81 views

Does correlation between input affect Regression model?

I'm new to data science I'm currently working on regression problem and I have 10 inputs/attributes. My question is what to do if there are correlations among different features of the input data? ...
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1answer
20 views

Feature selection of an acoustic voice dataset for classification

I'm trying to gain some insight into acoustic voice data composed of 19 features. I want to understand what features contribute most for classification. ADDED: Most features are related with the ...
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1answer
52 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 ...
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1answer
31 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 ...
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1answer
14 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:...
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1answer
36 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 ...
3
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2answers
45 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, ...
3
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2answers
61 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). ...
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4answers
179 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 ...