Visa International Service Association

Nupulsecv, Inc.

North Carolina State University

Shamim Samadi

Hao Yang

Douglas Edward Ivers

Robert M Smith

Mahashweta Das

Ryan Daniel McCormick

Sai Bhargav Dasari

Nagarjuna Reddy Chinta

Cranos M Williams

Divyakumar Mahiman Badheka

Hubert Troy Nagle, Jr

The present disclosure is directed towards systems and methods built for predictively timing the inflation and/or deflation of an intra-aortic balloon pump. A controller operates in three states: (1) initialization state, (2) learning state, and (3) peak detection state. The controller decomposes a patient's electrocardiogram signal to a power signal. It then learns characteristics of the patient's electrocardiogram signal during the learning state and computes adaptive threshold parameter values. During the peak detection state, the controller applies the learnt threshold parameter values on a current electrocardiogram signal to identify occurrence and timings of R peaks in the electrocardiogram signal. The R-to-R peak timings are then used to trigger inflation of an intra-aortic balloon pump.

Predictive QRS detection and R-to-R timing systems and methods

Apparatuses, methods, and systems are provided for making sequential recommendations using transition regularized non-negative matrix factorization. A non-application specific collaborative filtering based personalized recommender system can recommend a next logical item from a series of related items to a user. The recommender system can recommend a next desirable or series of next desirable new items to the user based on the historical sequence of all user-item preferences and a user's most recent interaction with an item. An asymmetric item-to-item transition matrix can capture aggregate sequential user-item interactions to design a loss function for matrix factorization that incorporates the transition information during decomposition into low-rank factor matrices.

Transition regularized matrix factorization for sequential recommendation

Growing community of inventors

San Jose, CA, United States of America

Shamim Samadi