TransWikia.com
  1. All Categories
  2. Data Science

Data Science : Recent Questions and Answers (Page 47)

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

Canny edge detection not working on Gaussian blurred images

I am trying to detect edges on this lane image. First blurred the image using Gaussian filter and applied Canny edge detection but it gives only blank image without detecting...

Asked on 08/24/2021 by NSVR

1 answer

How to achieve SHAP values for a CatBoost model in R?

I'm asked to create a SHAP analysis in R but I cannot find it how to obtain it for a CatBoost model. I can get the SHAP values of an...

Asked on 08/24/2021

1 answer

Voting classifier using grid search for Time Series

I have three models:ArimaAuto ARIMADouble Exponential SmoothingI would like to apply an ensemble method - a voting method and allow the classifier to learn weights for these three models. I...

Asked on 08/24/2021 by Shan Khan

1 answer

How to use PCA in CNN for image recognition using Keras?

I created a CNN model for image classification and I want to use Principal Component Analysis (PCA) but when I run pca.fit() code, the code still running for hours and...

Asked on 08/24/2021

1 answer

Propensity model with Only Positive Data

Is it possible to build a propensity model (i.e., the likelihood that a user will buy an item) using only positive values. For example, I have a bunch of data...

Asked on 08/24/2021 by QuantNoob

1 answer

Deep Q-learning, how to set q-value of non-selected actions?

I am learning Deep Q-learning by applying it to a real world problem. I have been through some tutorials and papers available online but...

Asked on 08/21/2021 by Rasoul

1 answer

Drop NA values in an imported xlxs document with R

I have the attached document. I've imported an xlxs document into R. I would like to get rid of all rows containing NA. I've tried the following...

Asked on 08/20/2021 by Chris Kehl

3 answer

Marginalization of joint distribution

I am trying to understand how you marginalise a joint distribution. In my case I have a fair coin, $P(C) = frac12$ and a fair dice $P(D)...

Asked on 08/20/2021 by Jackt153

1 answer

How to discretize certain features with a feature set?

I am working with typing data with timing features(unit: ms) and some of the features are based on the keyboard keyCodes(positive integers, range:[8, 222]). Currently, I use StandardScaler() by ...

Asked on 08/20/2021

1 answer

How to compare and find common values from different columns in same dataframe?

I would like to compare two columns and find common value sets in each column, then output the rows with the common values. Let's say I have a dataframe with:...

Asked on 08/20/2021 by lithiux

1 answer

Ask a Question

Get help from others!

© 2024 TransWikia.com. All rights reserved. Sites we Love: PCI Database, UKBizDB, Menu Kuliner, Sharing RPP