Data Science Questions, Problems & Solutions : TransWikia.com ~ Page 319

Is providing class weight to neural network enough for imbalanced binary classification?

I have a highly imbalanced binary classification problem, probably 95:5 for two classes. I don't want to perform resampling as the data is already huge and training it would just...

Asked on 09/13/2020

1 answer

How to account for reduced student capacity when calculating program retention?

I work at a nonprofit youth center that has 2 distinctive programs throughout the year. Our afterschool program runs during the school year, and our summer camp program runs during...

Asked on 09/13/2020 by Ethan Thompson

1 answer

Machine Learning based Multivariate Time Series Prediction - How to create supervised data format

Q1: I have a multivariate time series dataset. For each timestep, there are 11 features and 1 output. I am going to use supervised ML to predect the output....

Asked on 09/11/2020 by jkjsdf fod

1 answer

Association Rules with Python (coded dataset)

I have this dataset which I really need to use association rules techniques on. The dataset has like 90 variables, many of which are ordinal. Thing is, the data is...

Asked on 09/10/2020 by NeR0

1 answer

Preparing Dataset Minority Class vs Majority Class

I'm currently doing a binary classification for sentiment prediction. Currently I have the majority class (~90% of the data) as my positive class (labelled 1) and the minority class (~10%...

Asked on 09/10/2020 by misheekoh

1 answer

Pandas: access fields within field in a DataFrame

Suppose I have such a JSON file:[ { "id": "0", "name": "name0", "first_sent": "date0", ...

Asked on 09/09/2020 by martina

1 answer

Estimate correlation in Python

I have a dataset with labels and usernames:Labels Usernames1 Londonderry1 Londoncalling1...

Asked on 09/08/2020 by Math

1 answer

Does gradient descent always converge to an optimum?

I am wondering whether there is any scenario in which gradient descent does not converge to a minimum. I am aware that gradient descent is not always guaranteed to converge...

Asked on 09/08/2020 by wit221

5 answer

CNN not learning - Tensorflow implementation of a binary image classification problem

I designed a custom net architecture (16 layers net) for a binary image classification task and here some highlights:input image: 100x100x3 of two classes(car and person)(normalized and randomized)output layer: sigmoid...

Asked on 09/08/2020 by Osama Khafagy

0 answer

What's going on with my "triplet optimization" algorithm?

I've tried StackOverflow and Comp Sci SE, and everyone points here. I wrote an algorithm for data analysis using the CERN ROOT framework. It takes in three files of sorted...

Asked on 09/08/2020 by Algorithm

0 answer

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