# Concrete Strength - Regression — Data

来源：https://www.kaggle.com/competitions/concrete-strength-regression/data

本地 Meta Kaggle 快照；不是本次实时页面。

# Dataset Description

## Dataset Description
- **Concrete Compressive Strength Data Set**
  - **Number of Instances:** 721
  - **Number of Attributes:** 9
  - **Attribute Breakdown:**
    - 8 quantitative input variables (components of the concrete mixture)
    - 1 quantitative output variable (concrete compressive strength)
  - **Missing Attribute Values:** None

## Attribute Information
The dataset includes the following variables:

1. **Cement (component 1):**
   - Data Type: Quantitative
   - Measurement: kg in a m3 mixture
   - Description: Input variable representing the amount of cement in the concrete mixture.

2. **Blast Furnace Slag (component 2):**
   - Data Type: Quantitative
   - Measurement: kg in a m3 mixture
   - Description: Input variable representing the amount of blast furnace slag in the concrete mixture.

3. **Fly Ash (component 3):**
   - Data Type: Quantitative
   - Measurement: kg in a m3 mixture
   - Description: Input variable representing the amount of fly ash in the concrete mixture.

4. **Water (component 4):**
   - Data Type: Quantitative
   - Measurement: kg in a m3 mixture
   - Description: Input variable representing the amount of water in the concrete mixture.

5. **Superplasticizer (component 5):**
   - Data Type: Quantitative
   - Measurement: kg in a m3 mixture
   - Description: Input variable representing the amount of superplasticizer in the concrete mixture.

6. **Coarse Aggregate (component 6):**
   - Data Type: Quantitative
   - Measurement: kg in a m3 mixture
   - Description: Input variable representing the amount of coarse aggregate in the concrete mixture.

7. **Fine Aggregate (component 7):**
   - Data Type: Quantitative
   - Measurement: kg in a m3 mixture
   - Description: Input variable representing the amount of fine aggregate in the concrete mixture.

8. **Age:**
   - Data Type: Quantitative
   - Measurement: Day (1~365)
   - Description: Input variable representing the age of the concrete (in days) when tested.

9. **Concrete Compressive Strength:**
   - Data Type: Quantitative
   - Measurement: MPa (megapascals)
   - Description: Output variable representing the compressive strength of the concrete.

### Competition Goals and Metrics
- **Goal:** Predict the concrete compressive strength based on the given input variables.
- **Metric:** Mean Squared Error (MSE)
  - Lower MSE indicates better model performance in predicting concrete strength.