公开(公告)号：US11004135B1

公开(公告)日：2021-05-11

申请号：US15681109

申请日：2017-08-18

Applicant: Amazon Technologies, Inc.

Inventor： Samuel Theodore Sandler ,  Karthik Mohan

IPC: G06Q30/06 ,  G06N3/08 ,  G06N3/04

Abstract: The present disclosure is directed to training, and providing recommendations via, a machine learning model architected to balance relevance and diversity of sets of recommendations. For example, a neural network can be provided with user profile features and can output probabilities for each of a number of recommendations. This can be converted into a ranked list of recommendations. The ranked list of recommendations is provided to a diversity model that maximizes an optimization objective having a first objective that quantifies relevance of a recommendation and a second objective that measures diversity of a set of recommendations. The output of the diversity model is a set of recommendations that have both high relevance and high diversity.

公开(公告)号：US09691035B1

公开(公告)日：2017-06-27

申请号：US14288216

申请日：2014-05-27

Applicant: Amazon Technologies, Inc.

Inventor： Samuel Theodore Sandler

IPC: G06F17/00 ,  G06N99/00 ,  G06N5/04

CPC classification number: G06Q30/0241 ,  G06Q30/0631

Abstract: A network-based enterprise or other system that makes items available for selection to users may implement real-time updates to item recommendation models based on matrix factorization. An item recommendation model may be maintained that is generated from a singular value decomposition of a matrix indicating selections of items by users. A user-specific update to the item recommendation model may be calculated in real-time for a particular user such that the calculation may be performed without performing another singular value decomposition to generate an updated version of the item recommendation model. Item recommendations may then be made based on the user-specific update and the item recommendation model. In various embodiments, the item recommendations may be made in response to an indication or request for item recommendations for the particular user.

公开(公告)号：US10049375B1

公开(公告)日：2018-08-14

申请号：US14666023

申请日：2015-03-23

Applicant: Amazon Technologies, Inc.

Inventor： Giovanni Zappella ,  Marcel Ackermann ,  Rodolphe Jenatton ,  David Spike Palfrey ,  Samuel Theodore Sandler

IPC: G06Q30/02 ,  G06F17/30

Abstract: A system is disclosed that identifies early adopter users by creating a directed graph of item access information for an item category and performing a page rank type process on the item access information. This directed graph may be created in a reverse temporal order. The early adopter users can be identified as the users with nodes in the directed graph that have a threshold number or rate of incoming links directly or indirectly pointing towards the nodes. Using the early adopter users as a sample, systems herein can determine whether to recommend an item based on the popularity of the item with respect to the early adopter users. Further, systems herein can determine an inventory level to maintain for an item based on the popularity of the item with respect to the early adopter users.