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Data Science : Recent Questions and Answers (Page 216)

Find answers to your questions about Data Science or help others by answering their Data Science questions.

Should you use the same algorithm in your feature selection as your model

My question is should you use the same algorithm in feature selection as your model? If I'm using a KNN model for classification should I also use a KNN algo...

Asked on 02/15/2021 by Austin Johnson

1 answer

LSTM variable period prediction

I'm trying to train a model to predict the final cost of a product being developed over a few months. I have historical data of similar products which will be...

Asked on 02/15/2021 by tehem

0 answer

EfficientNet function composition or Hadamard

In the page 3 of the paper of EfficientNet, there is a equation$$mathcal{N} = bigodot_{i=1...s} mathcal{F}_{i}^{L_i} big(X_{langle H_i, W_i, C_i rangle}big)$$where $mathcal{N}$ is...

Asked on 02/15/2021 by Chris XU

1 answer

What is meant by outliers in text data set. How to detect them?

I know that outliers are present in data but their behaviour varies a lot from remaining data points. But today while learning about naive-Bayes they mentioned that naive-Bayes can...

Asked on 02/15/2021 by Boggavarapu Ram Saran Sai Srin

3 answer

Why are separable convolutional layers not recommended after layers having too few channels?

Since separable convolutional layers only have one spatial filter per input channel, you should avoid using them after layers that have too few channels, such as the input layer.from "Géron,...

Asked on 02/15/2021 by Crispy13

0 answer

Kernel PCA and K largest eigenvectors

How can one prove that the optimal kPCA solution $a^*={a_1...a_K}$ are the $k$-largest Eigenvectors of the (centered) kernel matrix $K$? I referred to a lot of resources...

Asked on 02/15/2021

1 answer

Why does regression model predict the same output

I have built a CNN for regression, but it is giving identical predictions (up to 8 sig. fig.) for almost 1/3 of the test data set. (The other outputs are...

Asked on 02/15/2021 by Bio

0 answer

Is it ever advantageous to perform regression on integer-typed label?

Right now, my program's type-checking prevents regression analysis from running on integer labels. It assumes ints are for ordinal/ OHE classification. I just ran a test and verified that it...

Asked on 02/15/2021 by HashRocketSyntax

0 answer

LSTM with input of actual time step

I'm working on an implementation of LSTM neural network to forecast energy consumption. I have a dataset with load, series of weather parameters and indicator of it's bank holiday or...

Asked on 02/14/2021

1 answer

How to find coherence between a large number of sentences

I have a list of sentences returned as a result of a document search algorithm. I want to determine if the results returned are semantically close/similar/coherent using some sort of...

Asked on 02/14/2021 by Pujan Paudel

1 answer

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