A method for authentication of coupons using a blockchain includes: storing transaction data for a payment transaction, wherein the transaction data includes at least a transaction amount; receiving an identification value; receiving a block included in a blockchain, wherein the block includes at least a block header and a plurality of transaction values, each transaction value including at least a coupon identifier and coupon data; executing a query on the received block to identify a specific transaction value of the plurality of transaction values where the included coupon identifier corresponds to the received identification value; and executing a query on the memory to update at least the transaction amount included in the stored transaction data based on the coupon data included in the identified specific transaction value.

Techniques are disclosed in which a computer system receives, from a plurality of user computing devices, a plurality of device-trained models and obfuscated sets of user data stored at the plurality of user computing devices, where the device-trained models are trained at respective ones of the plurality of user computing devices using respective sets of user data prior to obfuscation. In some embodiments, the server computer system determines similarity scores for the plurality of device-trained models, wherein the similarity scores are determined based on a performance of the device-trained models. In some embodiments, the server computer system identifies, based on the similarity scores, at least one of the plurality of device-trained models as a low-performance model. In some embodiments, the server computer system transmits, to the user computing device corresponding to the low-performance model, an updated model.

The present invention relates to a system and a method for comparing information contained on at least two documents belonging to an entity. The present invention includes at least one device configured to receive information from at least one first document and at least one second document; then, compare at least one first document information and at least one second document information; and determine whether at least one second document contains at least one first document information. The present invention then outputs a result of whether the at least one second document contains at least one first document information.

The embodiments of the invention relate to a mining method and device based on a blockchain, and a computer readable storage medium. The method comprises: acquiring behavior data of at least one user within a cycle; determining a value corresponding to each user in the at least one user within the cycle according to the behavior data of the at least one user and a value of a rated quantity within the cycle; and recording an identifier, the behavior data and the value of the at least one user within the cycle in the blockchain, so as to realize more reasonable and more resource-efficient mining.

A system that automates the clearing and settlement of electronic coupons (E-Coupons) by leveraging existing technologies and enabling E-Coupon redemption at any merchant having electronic funds transfer (EFT) capabilities, such as credit/debit card acceptance. The system reduces opportunities for fraud, reduces or eliminates the need for manual clearinghouse counting and sorting of coupons, and provides an electronic audit trail for coupon redemption, tying a specific purchase to a specific coupon. After registering and selecting coupons, consumers then use an E-Coupon card or account access device at a merchant's point-of-sale (POS) terminal. E-Coupon values are deducted from the consumer's final amount due. Both consumer package goods manufacturers (CPGs) and merchants may be charged a fee. Expired coupons are automatically removed from the account and their value refunded to the CPGs. Reports on redeemed coupons and consumer profiles can be generated and provided to CPGs or merchants.

A method for cleaning up vehicle driving data includes receiving vehicle driving data of a vehicle within a predetermined time period, the vehicle driving data comprising vehicle mileage data and vehicle status data; determining a first mileage of the vehicle within the predetermined time period based on the vehicle mileage data; determining a second mileage of the vehicle within the predetermined time period based on the vehicle status data; and judging whether the first mileage is abnormal data based on the second mileage.

An embodiment for contextualizing abnormal events which employ location-based social networks, LBSN, data to determine events that may be linked to the abnormal events is provided. The embodiment may include detecting an occurrence of an abnormal event within a geographic region, wherein the abnormal event occurs at an occurrence time. The embodiment may also include obtaining location-based social networks, LBSN, data relating to the geographic region for a time period including the occurrence time. The embodiment may further include analyzing the obtained LBSN data, wherein the analyzation determines a linked event within the geographic region for the time period. The embodiment may also include associating the linked event with the abnormal event.

A store low-stock item reporting and promotion system may include a remote device to be carried by a shopper when shopping within a store and may be configured to acquire an image associated with an item. The system may include a server configured to obtain the image from the remote device, identify the item based upon the image, and determine a low-stock condition for the item based upon the image. Upon determining the low-stock condition, the server may generate a low-stock notification and communicate the low-stock notification to another device, and generate a digital promotion and communicate the digital promotion to the remote device.

A system that automates the clearing and settlement of electronic coupons (E-Coupons) by leveraging existing technologies and enabling E-Coupon redemption at any merchant having electronic funds transfer (EFT) capabilities, such as credit/debit card acceptance. The system reduces opportunities for fraud, reduces or eliminates the need for manual clearinghouse counting and sorting of coupons, and provides an electronic audit trail for coupon redemption, tying a specific purchase to a specific coupon. After registering and selecting coupons, consumers then use an E-Coupon card or account access device at a merchant’s point-of-sale (POS) terminal. E-Coupon values are deducted from the consumer’s final amount due. Both consumer package goods manufacturers (CPGs) and merchants may be charged a fee. Expired coupons are automatically removed from the account and their value refunded to the CPGs. Reports on redeemed coupons and consumer profiles can be generated and provided to CPGs or merchants.

There are provided systems and methods for the location-based secured transfer of a service associated with a loyalty point between mobile devices. A first mobile device submits a services request to a central system, the request identifying a service and inclusive of the position (geographical location) of the first mobile device. The central system identifies service providers capable of fulfilling the request and account owners having sufficient loyalty points to fulfill the request that are in proximity to the first mobile device. Secure communications between the first mobile device and a second mobile device enable negotiations. The central system guides the first mobile device and the second mobile device to a predetermined location to enable secure communication of transaction information, payment information, personal information (needed to procure services), etc. The central system verifies the transaction, ensuring both the first and second mobile devices fulfill the agreed upon terms.