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DMCT-NOTES/unit 1/02_Data_Mining_Process.md
2025-11-24 16:55:19 +05:30

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# The Data Mining Process
How do we actually do data mining? It follows a standard process (often similar to CRISP-DM).
## Steps in the Process
1. **Define the Goal**: What do you want to achieve? (e.g., Increase sales, detect fraud).
2. **Gather Data**: Collect data from databases, logs, etc.
3. **Cleanse Data**: Fix errors, remove duplicates, and handle missing values.
4. **Interrogate Data**: Explore the data (charts, graphs) to find initial patterns.
5. **Build a Model**: Use algorithms (like decision trees or regression) to find the solution.
6. **Validate Results**: Check if the model is accurate.
7. **Implement**: Use the insights in the real world.
## Data Mining Functionalities
Tasks are generally divided into two types:
### 1. Descriptive Mining
- Describes what is in the data.
- Finds patterns and relationships.
- *Examples*: Clustering, Association Rules.
### 2. Predictive Mining
- Predicts future or unknown values.
- *Examples*: Classification, Regression, Prediction.