Archives: 2021 | DataScienceTribe

2021

06

18

In applying machine learning models in production stage, like lightGBM model or any models.While we all know the order o

2021-06-18 data science

preprocessing pandas tip machine learning

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Following example shows how to group age variable into groups,and some simple missing value imputaiton proecdures. There

2021-06-15 data science

python preprocessing pandas tip

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import pandas as pd generate some example some datadata = [ [['python','C'],'John'],[[&#x

2021-06-14 data science

python preprocessing pandas tip

12

In many use cases, different features of the same event are stored in a table by multiple rows.multiple columns will ind

2021-06-12 data science

preprocessing pipeline feature engineering

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During the test stage, i.e., once the model is on production, for any new data,tsfresh feature generation does not depen

2021-06-10 data science

preprocessing pipeline feature engineering tsfresh time series

09

What is Tokenization?Tokenization is the process by which a large quantity of text is divided into smaller parts called

2021-06-09 data science

tokenization NLTK

08

obtain null or missing values of a dataframeSuppose the dataframe has the following formats, with 10 rows and 5 clomns:

2021-06-08 data science

pandas dataframe

05

Elasticsearch use the DSL format to create query. One easy search is to use multi_match by passing the query key word, a

2021-06-05 search

python elasticsearch

04

from sklearn.base import BaseEstimator, TransformerMixinimport pandas as pdclass dayandhour_Transformer(BaseEstimator, T

2021-06-04 data science

python pandas preprocessing