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Data Science : Recent Questions and Answers (Page 197)

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

How to resize MNIST images to fit AlexNet model

I am using the keras API to load in the MNIST dataset. My problem is I need to use AlexNet as my algorithm. Understanding the AlexNet model, I require to...

Asked on 03/05/2021 by CrocusMac

1 answer

How to improve deep learning model having less data

I have trained a deep learning model for regression. The accuracy of the model is poor. I am quite new to deep learning. How can I improve it? The target...

Asked on 03/05/2021

1 answer

How To Motivate A Neural Network

Suppose a training dataset contains the following inputs:company sizenumber of employeesturnoveraverage salarycountryyears of operation...and outputs:budget allocated to marketingbudget allocated to salesbudget allocated to R&Dbudget allocated to trainingbudget allocated...

Asked on 03/05/2021

1 answer

Non-Convex Constraints for Classification Problems

I am willing to create a hypothetical non-convex constraints for the purpose of practising nonlinear classification using an algorithm. I thought of such constraints in the form: $x^TAx +...

Asked on 03/05/2021 by MaliMali

1 answer

Why is the accuracy on the test dataset very low when training a neural network on an IMU dataset?

I am trying to train an IMU (Inertial Measurement Unit) dataset. The dataset contain 6 features (3-gyro, 3-accelerometer) and 1 label column. I have build a neural network via Conv1D,...

Asked on 03/05/2021 by dasmehdix

0 answer

Prioritized Replay, what does Importance Sampling really do?

I can't understand the purpose of importance-sampling weights (IS) in Prioritized Replay (page 5). A transition is more likely to be sampled from experience replay the larger...

Asked on 03/05/2021

2 answer

Pearson correlation coefficient - is correlation estimator acceptable?

As far as I know when it comes to theory, we use Pearson correlation when we want to check the correlation between two variables, which are both continuous or discrete....

Asked on 03/05/2021 by I.D.M

1 answer

Binary classification of similar images with small region of interest

I have a dataset of microscope images and I want to train a ML/DL algorithm to perform binary classification. The positive class is when there is only one cell in...

Asked on 03/05/2021 by TasosGlrs

3 answer

How to compute Hessian matrix for log-likelihood function for Logistic Regression

I am currently studying the Elements of Statistical Learning book. The following equation is in page 120. It calculates the Hessian matrix for the log-likelihood function as follows begin{equation}...

Asked on 03/05/2021

1 answer

How to analyse the results of cross-validation do determine overfitting

I performed k-fold CV and measured the resulting average error (RMSE) for each fold. This was done with 5 folds, and 4 of the measurements gave similar errors (between 10%...

Asked on 03/05/2021 by MyName

1 answer

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