Song Wang

US Patent:

20130066855, Mar 14, 2013

Filed:

Mar 27, 2012

Appl. No.:

13/431773

Inventors:

Chetan Kumar Gupta - San Mateo CA, US
Song Wang - Mountain View CA, US
Abhay Mehta - Austin TX, US
Mo Liu - San Jose CA, US
Elke Angelika Rundensteiner - Acton MA, US
Medhabi Ray - Worcester MA, US

International Classification:

G06F 17/30

US Classification:

707722, 707774, 707E17014

Abstract:

A method of evaluating nested complex sequence pattern queries includes obtaining events from an event stream and evaluating the events within a first window using an outer query to produce outer partial results. The method also includes determining a more stringent window constraint, the more stringent window constraint comprising a subset of the window constraint corresponding to events that produces the outer partial results and passing the more stringent window constraint to an inner query nested within the outer query. A complex event processing system is also provided.

US Patent:

20130110820, May 2, 2013

Filed:

Oct 31, 2011

Appl. No.:

13/285785

Inventors:

Chetan Kumar Gupta - San Mateo CA, US
Song Wang - Mountain View CA, US
Abhay Mehta - Austin TX, US
Mo Liu - San Jose CA, US
Elke A. Rundensteiner - Acton MA, US

International Classification:

G06F 17/30

US Classification:

707718, 707E17132

Abstract:

There is provided a computer-implemented method of determining an execution ordering. An exemplary method comprises generating a directed graph based on a hierarchy. The hierarchy includes a plurality of pattern queries. The method also includes determining a minimum spanning tree of the directed graph. The method further includes determining an execution order of the pattern queries based on the minimum spanning tree.

US Patent:

20130111012, May 2, 2013

Filed:

Oct 31, 2011

Appl. No.:

13/285825

Inventors:

Chetan Kumar Gupta - San Mateo CA, US
Abhay Mehta - Austin TX, US
Song Wang - Mountain View CA, US

International Classification:

G06F 11/00

US Classification:

709224

Abstract:

An exemplary embodiment of the present techniques may detect and correlate events from moving object sensor data by receiving data from a sensor. The data received from the sensor may be mapped, and events may be detected based on the mapped sensor data. Events from the mapped sensor data may be correlated online.

US Patent:

20190104028, Apr 4, 2019

Filed:

Jan 30, 2015

Appl. No.:

15/536914

Inventors:

- Tokyo, JP
Chetan GUPTA - San Mateo CA, US
Song WANG - Mountain View CA, US
Umeshwar DAYAL - Saratoga CA, US

International Classification:

H04L 12/24
H04L 29/08
H04L 12/26
G06F 11/34

Abstract:

Example implementations disclosed herein are directed to monitoring communications networks in real time to ensure that they are performing in a desired fashion. Metrics such as utilization and latency are monitored to ensure that customer SLAs (Service Level Agreements) are met in a timely fashion. To detect problems in advance, example implementations predict the future values of metrics and detect events if the future value violates certain conditions. Example implementations build models that can predict the future values of metrics and analyze historical, near real time and real time streaming data so as to build predictive models.