I will do professional data cleaning and preprocessing using python and pandas

Shivam Singh

India

I speak Hindi, English

Python Data Cleaning and Preprocessing Specialist Pandas ML Ready Datasets

I help businesses and data scientists turn messy, unusable datasets into clean, ML-ready data — fast and professionally. What I handle: ✅ Missing values (smart imputation — not just mean/median) ✅ D...
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About this Gig

Is your dataset full of missing values, ERROR strings or UNKNOWN 

placeholders? I will professionally clean it and deliver a 100% 

ML-ready dataset.


WHAT I DELIVER:

Detection of all dirty values (UNKNOWN, ERROR, N/A, empty strings)

Standardisation of placeholders to proper NaN

Correct data type conversion (numeric, datetime, categorical)

Smart missing value imputation per column:

  - Probabilistic sampling for categorical columns

  - Business logic arithmetic for numerical columns

  - Feature engineering for date columns

Jupyter Notebook - clean, commented, reproducible

PDF report with charts and logic explained


WHY MY APPROACH IS DIFFERENT:

Most freelancers fill every missing value with mean or median. I 

analyse WHY values are missing and choose the statistically correct 

strategy for each column separately.


PERFECT FOR:

Kaggle datasets before modelling

Business transaction data with POS errors

Survey data with incomplete responses

Any CSV or Excel with messy inconsistent entries


TOOLS: Python - Pandas - NumPy - Scikit-learn - Matplotlib - Seaborn

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