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Data Science : Recent Questions and Answers (Page 262)

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

hyperparameter tuning with validation set

For what I know, and correct me if I am wrong, the use of cross-validation for hyperparameter tuning is not advisable when I have a huge dataset. So, in this...

Asked on 12/31/2020

1 answer

How can we extract fields from images?

I am making an document parser which extracts data fields from the documents and store them in a structured way. Each field in my dataset is horizontal which is easy...

Asked on 12/31/2020 by hR 312

5 answer

Is fitting two RandomForestClassifiers 500 trees each and average their predicted probabilities on the test set more performant than one with 1000?

If I fit two RandomForestClassifiers 500 trees each and average their predicted probabilities on the test set, would it have better results than fitting a RandomForestClassifier with 1000 trees and...

Asked on 12/31/2020

2 answer

How to specify scale_pos_weight value at runtime in Hyperopt?

I want to use LighgbmClassifier for a binary Classification. for Hyper Parameter tuning I want to use Hyperopt. The Dataset is imbalanced. Using Sklearns class_weight.compute_class_weight as shown below ...

Asked on 12/31/2020 by megjosh

1 answer

Data Exploration Led Conversion to Ordinal Variable

[I encountered this question at an interview few weeks ago and I am still not clear.] If all the values in a categorical column fuel_mileage come from the set {poor,...

Asked on 12/31/2020 by Imran.Ali.PhD

1 answer

Estimating sales volume of new drugs to a therapeutic class

I work with pharmacy claims data for an insurance company and wish to estimate how many members on existing products in a therapeutic class will shift to the new product...

Asked on 12/31/2020

1 answer

How should I encode 'dynamic' features (with multiple instances) along with 'static' features (single instances)?

Suppose I have to predict if a certain product from an assembly line in a factory will be a scrap. This product has let's say 'static' data like a certain...

Asked on 12/31/2020 by Toma Dragos

0 answer

How to interpret this Plot of Model Loss from a BiLSTM model?

Hi everyone, the above graph is produced by a BiLSTM model i just trained and tested. I can't seem to...

Asked on 12/31/2020 by yts61

1 answer

Bioinformatics widget

Why is there are no Volcano-plot or MA-plot in bioinformatics widget? ...

Asked on 12/31/2020 by Fatty

1 answer

Which phrase should be returned in case of multiple matches when comparing text?

I want to compare one sentence to some other sentences using the Bag of Words model. Suppose that my comparing sentence is: I am playing football and there are three...

Asked on 12/30/2020 by Hefaz

1 answer

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