Update README.md

README.md

@@ -26,4 +26,30 @@ The example of one sample is provided below
   'product': 1,
   'flag': 0
 }
-```
+```
+
+### Data Fields
+
+- `app_id`: application ID.
+- `transactions`: an array of transactions where each transaction is represented as a 20-dimensional array, each element of the array represents a corresponding feature from the following list.
+  - `amnt`: normalized transaction amount. 0.0 - corresponds to omissions.
+  - `currency`: transaction currency ID.
+  - `operation_kind`: ID of the transaction type.
+  - `card_type`: unique identifier of the card type.
+  - `operation_type`: ID of the type of plastic card transaction.
+  - `operation_type_group`: ID of a group of card transactions, for example, debit card or credit card.
+  - `ecommerce_flag`: feature of e-commerce.
+  - `payment_system`: ID of the payment system type.
+  - `income_flag`: feature of debiting/depositing funds to the card.
+  - `mcc`: unique identifier of the type of outlet.
+  - `country`: transaction country ID.
+  - `city`: transaction city ID.
+  - `mcc_category`: ID of the transaction store category.
+  - `day_of_week`: day of the week when the transaction was made.
+  - `hour`: hour when the transaction was made.
+  - `days_before`: number of days before the date of issue of the loan.
+  - `weekofyear`: number of the week in the year when the transaction was made.
+  - `hour_diff`: number of hours since the last transaction for this client.
+  - `transaction_number`: sequence number of the client's transaction.
+- `product`: product ID for which it is necessary to make a decision whether the applicant will go into default or not
+- `flag`: target, 1 - the fact of going into default.