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Data Science : Recent Questions and Answers (Page 298)

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

Is there any optimal way on feature selection for more than one classification algorithms?

I have a wine dataset with 13 features that indicates 3 different wine classes (target), and k-NN, SVM with linear kernel and SVM with rbf kernel algorithms to be tried...

Asked on 12/01/2020 by bbasaran

1 answer

How to find nearest neighbors in SMOTE

I am reading the original paper by Chawla and others for SMOTE. I am trying to understand how to generate these synthetic examples for over-sampling the minority class. The paper...

Asked on 12/01/2020

2 answer

Filling created feature with values

I'm trying to improve accuracy. I created a few new features based on old features. So I need to fill new feature's empty cell with same values in order to...

Asked on 12/01/2020 by Omer Beden

1 answer

Splitting large multi class dataset using leave one out scheme into train and test

I am doing some supervised learning using neural networks, and i have a Targets array containing 1906 samples, which contain 664 unique values. min. count of each unique value==2, by...

Asked on 12/01/2020 by Burple

1 answer

Identify same product

I am new to ML and still learning it. My problem is to identify duplicate products. I have a dataset containing product details such as name, colour, size, description, features...

Asked on 11/30/2020

2 answer

Why does my model sometimes not learn well from same data?

I have a dataset of 2 classes, both containing 2K images. I have split that into 1500 images for training and 500 images for validation. This is a simple structure...

Asked on 11/30/2020 by ManInMoon

2 answer

Update a pandas data frame column using Apply,Lambda and Group by Functions

I have a data frame in the format mentioned in the screenshot below. Column 'Candidate Won' has only 'loss' as the column value for all the rows. I want to...

Asked on 11/30/2020 by Srujan K.N.

1 answer

Public dataset for news articles with their associated categories

I am wondering if there are any public datasets of Google news with various news categories such as politics, entertainment, lifestyle, general news, sports etc. I want to use...

Asked on 11/30/2020 by utengr

3 answer

Extracting text from few areas on product label

I'm trying to achieve algorithm that will extract text from few areas(marked with red color) on label(similar to attached image) and QR code on a single photo taken with mobile...

Asked on 11/30/2020

0 answer

Neural network approach to the cocktail party effect

Imagine you have 2 people at 2 different microphones but in the same room. Each microphone is going to pick up some sound from the other person. Is there a...

Asked on 11/30/2020

2 answer

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