The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 18, 2015
Filed:
Jun. 05, 2013
Spotify Ab, New York, NY (US);
Erik Bernhardsson, New York, NY (US);
SPOTIFY AB, Stockholm, SE;
Abstract
A two-dimensional matrix of data points represents occurrences of users selecting content items, such as audio tracks. A server computes n-dimensional latent vectors for each user and for each item. The server iteratively optimizes the user vectors and item vectors based on the data points. Each iteration includes a first phase in which the item vectors are held constant, and a second phase in which the user vectors are held constant. In the first phase, the server computes first phase parameters based on data points, the user vectors, and the item vectors, and updates the user vectors. In the second phase, the server similarly computes second phase parameters for the item vectors and updates the item vectors. The server receives a request from a user for an item recommendation, and selects an item vector based on proximity in n-dimensional space. The server then recommends the selected item to the user.