Customer Churn Modeling via the Grey Wolf Optimizer and Ensemble Neural Networks

Table 2

Customer characteristics in the U.S. telecommunication company database (https://www.kaggle.com).

	Attribute name	Description	DataType	Values
1	customerID	Customer ID	Nominal	7590-VHVEG, 5575-GNVDE,Etc.
2	Gender	Customer gender	Nominal	Female, male
3	SeniorCitizen	Whether the customer is a senior citizen or not	Nominal	0,1
4	Partner	Whether the customer has a partner or not	Nominal	Yes, no
5	Dependents	Whether the customer has dependents or not	Nominal	Yes, no
6	Tenure	Number of months the customer has stayed with the company	Numeric	10,16, etc.
7	PhoneService	Whether the customer has a phone service or not	Nominal	Yes, no
8	MultipleLines	Whether the customer has multiple lines or not	Nominal	Yes, no, No phone service
9	InternetService	Customer’s Internet service provider	Nominal	DSL, fiber optic, No
10	OnlineSecurity	Whether the customer has online security or not	Nominal	Yes, no, internet service
11	OnlineBackup	Whether the customer has an online backup or not	Nominal	Yes, no, internet service
12	DeviceProtection	Whether the customer has device protection or not	Nominal	Yes, no, internet service
13	TechSupport	Whether the customer has tech support or not	Nominal	Yes, no, internet service
14	StreamingTV	Whether the customer has streaming TV or not	Nominal	Yes, no, internet service
15	StreamingMovies	Whether the customer has streaming movies or not	Nominal	Yes, no, internet service
16	Contract	The contract term of the customer	Nominal	Month-to-month, one year, two year
17	PaperlessBilling	Whether the customer has paperless billing or not	Nominal	Yes, no
18	PaymentMethod	The customer’s payment method electronic check, mailed check, bank transfer	Nominal	Electronic check, mailed heck, bank transfer, credit card
19	MonthlyCharges	The amount charged to the customer monthly	Numeric	85.29, 23.16, etc.
20	TotalCharges	The total amount charged to the customer	Numeric	85.29, 1899.95, etc.
21	Churn	Whether the customer churned or not	Nominal	Yes or No