Reducing false positives in entity matching based on image-linking graphs

A method comprising:

• receiving, by a computer system, a transaction request associated with a first user account;
• accessing, by the computer system, a graph associated with an entity, wherein the graph links a plurality of persons associated with the entity based on one or more images associated with the entity, and wherein two persons from the plurality of persons are linked in the graph when the two persons appear in at least one image of the one or more images associated with the entity;
• determining, by the computer system, a first position of a first person associated with the first user account within the graph based on an image of the first person;
• identifying, by the computer system, a second person who has a particular type of relationship with the entity based on a second position of the second person in the graph;
• accessing, by the computer system, transaction data associated with transactions conducted between the first user account and a second user account of the second person;
• and
• determining, by the computer system, whether to authorize the transaction request, deny the transaction request, or prompt the first person for information based on the first position of the first person and the transaction data.

A non-transitory machine-readable medium having stored thereon machine-readable instructions executable to cause a machine to perform operations comprising:

• receiving, from a device of a first person, a request to conduct a transaction through a user account with a service provider;
• obtaining an image of the first person;
• accessing a graph associated with an entity, wherein the graph links a plurality of persons associated with the entity based on one or more images associated with the entity, and wherein two persons from the plurality of persons are linked in the graph when the two persons appear in at least one image of the one or more images associated with the entity;
• determining a first position of the first person within the graph based on the image of the first person;
• identifying a second person who has a particular type of relationship with the entity based on a second position of the second person in the graph;
• determining a level of connectedness between the first person and the second person in the graph;
• and
• determining how to process the transaction based on the first position of the first person in the graph and the level of connectedness between the first person and the second person.