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Data Science : Recent Questions and Answers (Page 65)

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

Expected behaviour of loss and accuracy when using data augmentation

I have implemented a convolutional neural network in Keras, and I use off-line data augmentation in the training set. The way I do this is that I create batches of...

Asked on 07/31/2021 by roding

0 answer

Model selection and assessment using leave-one-out cross validation

Assume $D$ is the training data set with both the value of the predictors $mathbf{X}$ and the value of the response variable $Y$. I have a loss function $L$ and...

Asked on 07/30/2021 by KevinKim

2 answer

How can I improve the accuracy of my model? (Cab Cancellation Prediction)

I am trying to predict based on several parameters like trip type, car type, source of booking, start time, lead time (start- book) and a few other params whether or...

Asked on 07/30/2021 by frigidelirium

1 answer

Compare two tends with big difference in absolute value

I'm studying the Spotify streams trend for different nations in order to show the impact of the pandemic on music listeners. So far i retrieved my data, and plotted it....

Asked on 07/30/2021 by Mattia Surricchio

1 answer

How to implement large-scale Poisson Regression in Python

I am trying to implement a Poisson Regression in Python to predict rates. I am dealing with a ton of data (too much to store in a DataFrame), which means...

Asked on 07/30/2021 by Michael Petro

0 answer

Classification vs Regression Training

I'm working on a problem where I have images(600) and corresponding scores. I have used VGG19 pretrained architecture where I connected the last CNN layer of VGG19 with 3 new...

Asked on 07/30/2021

0 answer

Estimation of Bayes Error / Human-level error

In one of course Andrew Ng mentioned that model (Machine learning) error can't outperform Bayes / human level performance and hence the bias can't avoided.. (Unavoidable bias) How do we...

Asked on 07/30/2021 by Manimaran Subramanian

1 answer

How to read data in DSX from Data hub object storage container?

I am creating a new notebook with DSX. I have a data set that I want to use. It is not CSV. I found that I could go to Data...

Asked on 07/30/2021 by Vinayak Agrawal

0 answer

Word2Vec - CBOW and Skip-Grams

I'm wondering how Word2Vec is being constructed. I've read tutorials simply stating that we can train a skip grams neural network model and use the weights that are trained as...

Asked on 07/30/2021

3 answer

Why we need to have the test set remains consistent across multiple runs?

In the book "hands-on machine learning with scikit-learn and tensorflow: concepts, tools, and techniques to build intelligent systems" , more specifically in chapter 2 , the writer is teaching us...

Asked on 07/30/2021

2 answer

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