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Data Science : Recent Questions and Answers (Page 326)

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

How can we perfrom pre fitted standard scalar inverse transform on y variable in pipeline

I want to create pipeline which will inverse transform the y variable after model prediction I have 3 pickle files:X variable scalar transform pre fitted object :-X sclrY variable...

Asked on 08/12/2020

0 answer

How to calculate accuracy, precision and recall, and F1 score for a keras sequential model?

I want to calculate accuracy, precision and recall, and F1 score for multi-class classification problem. I am using these lines of code mentioned below.from keras import backend as Kdef...

Asked on 08/12/2020 by user85181

1 answer

Brain Connectogram or Connectivity Visualization

Can anybody please guide me how can I draw the following figure in my windows 10 environment, I mean is there some built-in online tool or software that I can...

Asked on 08/10/2020 by Naseer

1 answer

Using previous hour's value in time series data for inclusion in random forest

I have a training data set, which is something like the following:hour windspeed pollution0 ...

Asked on 08/10/2020 by compguy24

0 answer

How to play with .cat.codes and get_dummies

I may be lost here and this might be a stupid question.I know that get_dummies returns multiple columns depending upon the number of variables and .cat.code returns a single...

Asked on 08/10/2020 by Chandraraj Singh

1 answer

How to deal with mixed type features?

I'm working on a dataset with more than 2000 features. Most of the features contain both numerical values and categorical features. For example, in the feature represents how long has...

Asked on 08/09/2020 by MMMMMay

2 answer

My small script on value alteration in columns of a data not working

I have a data set which has "Speed" as one of the columns (features). The column contains both zero and non-zero values. I want to randomly set 10% of the...

Asked on 08/09/2020 by Elvin Ugonna

1 answer

Measuring performance of different classifiers with different sample sizes

I'm currently using several different classifiers on various entities extracted from text, and using precision/recall as a summary of how well each separate classifier performs across a given dataset. I'm...

Asked on 08/08/2020 by Dave Challis

3 answer

How to give name to topics created using LDA?

I have categorized 800,000 documents into 500 categories using the Mahout topic modelling. Instead of representing the topic using the top 5/10 words for each topics, I want to infer...

Asked on 08/08/2020 by adihere

4 answer

Back propagation through a simple convolutional neural network

Hi I am working on a simple convolution neural network (image attached below). The input image is 5x5, the kernel is 2x2 and it undergoes a ReLU activation function. After...

Asked on 08/07/2020 by cdr

1 answer

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