- Pipeline
- Data
- Modelling
- References The following project developed a solution to grade Big Five Personality Tests. The project was developed according to CRISP-DM phases, as follows:
Source: [1-2].
The target variable corresponds to the trait with max value of the test. Further information about the traits can be found below.
| Trait | Class | Description |
|---|---|---|
| Extroversion | E | High scores: People who tend to be social Low scores: People who prefer to work alone in projects |
| Agreeableness | A | High scores: Politically correct people Low Scores: Direct people |
| Conscientiousness | C | High Scores: People who tend to follow the rules and prefer order Low Scores: People who tend to be disorganized |
| Neuroticism | N | How emotional the person can be |
| Openness to Experience | O | High Scores: People who tend to “dream with their eyes open” Low Scores: People who tend to “have their feet on the ground” |
The following pipeline summarizes the steps and procedures which have been taken into account during training / validation and testing.
The exploratory Data Analysis allowed us to conclude that there were a imbalance in target variable. Then two approaches to go over this situation were followed:
- UnderSampling
- Oversampling
Data can be downloaded here.
The project at hand corresponds to a problem of multiclass classification. The following classifiers were trained and validated:
- Logistic Regression Classifier
- Decision Tree Classifier
- Random Forest Classifier
- Naive Bayes Classifier
[1] M. F. Hornick, E. Marcadé, and S. Venkayala, “Chapter 3 - Data Mining Process,” in The Morgan Kaufmann Series in Data Management Systems, M. F. Hornick, E. Marcadé, and S. B. T.-J. D. M. Venkayala, Eds. Burlington: Morgan Kaufmann, 2007, pp. 51–83.
[2] “File:CRISP-DM Process Diagram.png - Wikimedia Commons.” .
[3] B. Tunguz, L. Petar, and M. Akdag, “Big Five Personality Test | 1M Answers to 50 personality items, and technical information.” [Online]. Available: https://www.kaggle.com/tunguz/big-five-personality-test. [Accessed: 20-Jun-2020].