Questions tagged [feature-construction]
The feature-construction tag has no summary.
77 questions
2 votes
0 answers
94 views
Why can monotonic feature transformation influence the performance of hypeparam-tuned tree-based models (e.g., random forest)?
I recently observed something unexpected: Although monotonic feature transformation does not affect the performance of decision tree-based models with default hyperparameters, it actually does affect ...
- 21
0 votes
1 answer
50 views
How to add lagging Features for Forecasting with a random lag range without adding a new column per lag?
The common way of adding lagging features in time series forecasting problems is adding lag columns with pandas.shift(). While it is a fine method but what about when wanting to use a random integer (...
- 191
1 vote
2 answers
96 views
Tips for scraping crypto data in the right way
I am scraping data from crypto site and want to use neural network algorithm for predicting data. the way i save data is like these: and there is bunch of other features like open/high/low/close for ...
0 votes
1 answer
451 views
Feature creation ideas for propensity models?
I'm working on a propensity model, predicting whether customers would buy or not. While doing exploratory data analysis, I found that customers have a buying pattern. Most customers repeat the ...
- 273
1 vote
0 answers
30 views
Best way to represent a version feature based on percentiles
We're training a binary classifier in AutoML, and one of the features consist of browser versions. Currently these versions are provided "normalized" to the model, according to the ...
3 votes
1 answer
298 views
Finding if an outcome is predictable
Suppose we are asked to predict something given a set of features, how do we know if that target is actually predictable? That is, how do we know if there is actually some relation between the ...
- 75
1 vote
0 answers
20 views
Tsallis entropy - advice needed regarding obtaining probability distribution
As is always the way I stumbled across Tsallis entropy on SO whilst looking for something completely different. This soon lead me reading all sorts of interesting but terse academic papers. I am ...
- 111
1 vote
0 answers
28 views
Regression with a feature which has its own depth
I'm relatively new to ML/Statistical Analysis, and I'm facing a dataset structured like this ...
- 11