Datasets:

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The wallet opening data file records all relevant information when a wallet account is opened, including basic wallet information, identity authentication information, bank account information, region information, etc.

No.	Attribute Name	Chinese Description	Data Type	Description
1	wallet_id	Wallet ID	String	Unique wallet identifier, numeric string
2	wallet_type	Wallet Type	Integer	1-Corporate wallet, 2-Personal wallet, 3-Merchant wallet
3	wallet_level	Wallet Level	Integer	1-Class I wallet, 2-Class II wallet, 3-Class III wallet, 4-Class IV wallet
4	wallet_open_cert	Opening ID Card Number	String	18-digit ID card number, can be empty (Class IV wallets do not have this field)
5	wallet_open_cert_expire	ID Card Expiry Date	String	Format: YYYY-MM-DD, can be empty (Class IV wallets do not have this field)
6	wallet_open_date	Wallet Opening Date	String	Format: YYYY-MM-DD
7	wallet_open_timestamp	Wallet Opening Timestamp	String	Format: YYYY-MM-DD HH:MM:SS
8	wallet_open_tel	Opening Phone Number	String	11-digit phone number
9	realname_auth_time	Real-name Authentication Time	String	Format: YYYY-MM-DD HH:MM:SS, can be empty (Class IV wallets do not have this field)
10	accociated_bank_account	Associated Bank Account (Full)	String	Full bank account number, can be empty (Class III and IV wallets do not have this field)
11	bank_account_number	Bank Account Number (First 4)	String	First 4 digits of bank account number, can be empty (Class III and IV wallets do not have this field)
12	init_balance	Initial Balance	Float	Initial balance when wallet is opened, 2 decimal places
13	region_code	Region Code	String	Region code used to identify the wallet's region
14	is_abnormal	Is Abnormal Account	Boolean	True/False or 1/0, indicates whether it is an abnormal account
15	open_device	Opening Device (MAC Address)	String	MAC address format (XX:XX:XX:XX:XX:XX), can be empty (if NaN, then opened at counter)
16	open_ip	Opening IP Address	String	IP address, can be empty (if NaN, then opened at counter)

Notes:

Wallet Level Rules:
- Class I and II wallets: Require all fields (bank card, ID card, authentication time, etc.)
- Class III wallets: Do not require bank card binding, but require ID card and authentication time
- Class IV wallets: Do not require bank card, ID card, expiry date, or authentication time
Counter Opening: Approximately 10% of wallets are opened at counters, in which case open_device and open_ip are empty
ID Card and Phone Number Reuse: According to configuration, some ID cards and phone numbers can be shared by multiple wallets

II. Transaction Module Attributes

The transaction data file records all transaction records between wallets, including basic transaction information, transaction patterns, risk indicators, device information, etc.

No.	Attribute Name	Chinese Description	Data Type	Description
1	tx_id	Transaction ID	String	Unique transaction identifier
2	timestamp	Transaction Timestamp	String	Format: YYYY-MM-DD HH:MM:SS
3	src	Source Wallet ID	String	Unique identifier of the source wallet
4	dst	Destination Wallet ID	String	Unique identifier of the destination wallet
5	amount	Transaction Amount	Float	Transaction amount, 2 decimal places
6	transaction_motif	Transaction Motif Type	String	Transaction type, such as: single_transaction, normal_small_high_freq,regular_large_low_freq, class4_laundering,merchant_laundering, online_laundering, small_amount_testing, etc.
7	motif_id	Motif ID	String	Transactions sharing the same transaction pattern share the same motif_id
8	transaction_mode	Transaction Mode	String	Transaction mode: single_transaction, forward, fan_out, fan_in, one_to_many, many_to_one, many_to_many
9	is_risk	Is Risk Transaction	String	'0' indicates normal transaction, '1' indicates risk transaction
10	is_src_victim	Is Source a Victim	Integer	0 or 1, indicates whether the source is a victim account (for abnormal transaction analysis, mainly based on IP and device changes; if different from opening IP/device, it's fraud; if same, it's induced participation)
11	src_bank_account_number	Source Bank Account Number	String	First 4 digits of source bank account number
12	dst_bank_account_number	Destination Bank Account Number	String	First 4 digits of destination bank account number
13	src_wallet_level	Source Wallet Level	String	Source wallet level (1, 2, 3, 4)
14	dst_wallet_level	Destination Wallet Level	String	Destination wallet level (1, 2, 3, 4)
15	src_device	Source Device (MAC Address)	String	Source MAC address, format: XX:XX:XX:XX:XX:XX
16	src_ip	Source IP Address	String	Source IP address
17	dst_device	Destination Device (MAC Address)	String	Destination MAC address, format: XX:XX:XX:XX:XX:XX
18	dst_ip	Destination IP Address	String	Destination IP address
19	interval	Time Interval	Float	Time interval (seconds) between adjacent transactions within the same motif_id
20	hour	Transaction Hour	Integer	Hour when transaction occurred (0-23)

Notes:

Transaction Motif Types (transaction_motif):
- Normal transactions: single_transaction, normal_small_high_freq, regular_large_low_freq
- Abnormal transactions: class4_laundering, merchant_laundering, online_laundering, small_amount_testing (includes is_src_victim victim money laundering patterns)
Transaction Modes (transaction_mode):
- single_transaction: Single transaction
- forward: Forward transaction (appears in pairs)
- fan_out: One-to-many transfer out
- fan_in: Many-to-one transfer in
- one_to_many: One-to-many (includes both transfer in and out)
- many_to_one: Many-to-one (includes both transfer in and out)
- many_to_many: Many-to-many (includes both transfer in and out)
motif_id: All transactions sharing the same transaction pattern share the same motif_id, used for correlation analysis
is_src_victim: Used to identify whether the source is a victim account in abnormal transactions (e.g., fraud scenarios)
Device and IP Information: If a wallet does not have device/IP information at opening, it will be randomly generated during transactions

III. Wallet Closure Module Attributes

The wallet closure data file records relevant information when a wallet is closed, including closure time, closure channel, risk indicators, etc.

No.	Attribute Name	Chinese Description	Data Type	Description
1	wallet_id	Wallet ID	String	Unique wallet identifier, corresponds to wallet_id in the opening module
2	zs_id	Closure ID	String	Unique closure record identifier, format: ZS000001, ZS000002, etc.
3	zs_channel	Closure Channel	String	Closure channel, such as: mobile_app, web, counter, etc.
4	zs_timestamp	Closure Timestamp	String	Format: YYYY-MM-DD HH:MM:SS, time of closure operation
5	wallet_open_tel	Opening Phone Number	String	Phone number used when wallet was opened (for correlation analysis)
6	is_zs_laundering	Is Abnormal Closure	Integer	0 indicates normal closure, 1 indicates abnormal closure (money laundering related)

Notes:

Closure Time (zs_timestamp): Closure time should be later than the wallet's last transaction time
Closure Channel (zs_channel): Identifies the channel through which the user performed the closure operation
Abnormal Closure (is_zs_laundering):
- Priority marking for wallets that meet both conditions: is_abnormal=1 and participated in abnormal transactions
- Secondary marking for wallets that participated in abnormal transactions
- Tertiary marking for wallets with is_abnormal=1
- Finally, select other wallets based on risk scores
wallet_open_tel: Retains the phone number from opening time, used to analyze the historical account opening situation of phone numbers

IV. Data Relationships

Opening Module and Transaction Module:
- Linked through wallet_id
- The src and dst fields in the transaction module correspond to wallet_id in the opening module
- The src_wallet_level and dst_wallet_level in the transaction module correspond to wallet_level in the opening module
Opening Module and Closure Module:
- Linked through wallet_id
- The wallet_id in the closure module corresponds to wallet_id in the opening module
- The wallet_open_tel in the closure module corresponds to wallet_open_tel in the opening module
Transaction Module and Closure Module:
- Indirectly linked through wallet_id
- Closure time should be later than the wallet's last transaction time in the transaction module