Algorithmic suggestions based on a universal data scaffold

A method to securely present a suggestion to a user without disclosing user's information, comprising:

• receiving, from a server and at a user device associated with the user, a data structure configured to represent the user's information,
• wherein the data structure defines a plurality of attributes configured to include a plurality of attribute values, and
• wherein the data structure includes a hierarchical graph including a plurality of nodes, the plurality of nodes representing the plurality of attributes;
• obtaining, by the user device, the user's information;
• populating the data structure by assigning an attribute value to an attribute in the plurality of attributes, the attribute value extracted from the user's information;
• receiving, from the server, and at the user device, a suggestion detection module comprising a criterion and an executable computer code;
• and
• determining, by the executable computer code, whether to present the suggestion at the user device by:
• obtaining, by the executable computer code, the attribute and the attribute value from the data structure by traversing the hierarchical graph;
• determining, by the executable computer code, whether the attribute and the attribute value satisfy the criterion;
• and
• upon determining that the attribute and the attribute value satisfy the criterion, presenting, by the executable computer code, the suggestion at the user device.