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data_​preprocessing

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CSV Reader
Turn "NA" string to real Missing Value
String Manipulation (Multi Column)
Filter all Null Rows
Row Filter
Manual Selection of Input Colums
Column Filter
String to Number
Age Banding
Rule Engine
Convert qualitative to quantitative in "YearsCodePro"
String Manipulation
Education Banding
Rule Engine
Replace Outliers with Percentile Value
Rule Engine
Column Filter
Xử lý giá trị null (thay thế bằng median hoặc most frequent)
Missing Value
Lookup Countries labeled as "Other"
Value Lookup
Label Encoding
Category to Number
Count Entries by Country
GroupBy
Label countries with less than 400 entries as "Other"
Rule Engine
train.csv
CSV Writer
Joiner
test.csv
CSV Writer
Min-Max Scaling
Normalizer
Calculate 25% and 75% Salary percentile for each country
GroupBy
Split 80-20
Table Partitioner

Nodes

Extensions

Links

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To use this workflow in KNIME, download it from the below URL and open it in KNIME:

Download Workflow
Created by: ADMIN
Created at: 2025-10-07
On NodePit since: 2025-10-11
Last update: 2025-10-11
Created with KNIME version: v5.7.0

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