Varvara Kollia Phones & Addresses
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Los Gatos, CA
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Mountain View, CA
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Menlo Park, CA
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Santa Clara, CA
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Urbana, IL
Publications
Us Patents
Technologies For Detection Of Minority Events
View pageUS Patent:
20170372222, Dec 28, 2017
Filed:
Jun 24, 2016
Appl. No.:
15/192413
Inventors:
Varvara Kollia - Santa Clara CA, US
Ramune Nagisetty - Portland OR, US
Ramune Nagisetty - Portland OR, US
International Classification:
G06N 99/00
G06N 5/04
G06F 17/30
G06N 5/04
G06F 17/30
Abstract:
Technologies for detecting minority events are disclosed. By performing a guided hierarchical classification algorithm with a decision tree structure and grouping the minority class(es) in with some of the majority classes, large majority classes may be separated from a minority class without requiring good detection of the minority events by themselves. The decision tree structure may be used only for the purpose of identifying if the data sample in question is a member of a minority class. If it is determined that it is not, a primary classification algorithm may be used. With this approach, the guided hierarchical classification algorithm need not perform as well as the primary classification algorithm for the majority events, but may provide improved detection for minority events.
Low-Power Context-Aware Control For Analog Frontend
View pageUS Patent:
20160187961, Jun 30, 2016
Filed:
Dec 24, 2014
Appl. No.:
14/583049
Inventors:
- Santa Clara CA, US
Varvara Roula Kollia - Santa Clara CA, US
Esha John - New York NY, US
Ryan M Field - Sunnyvale CA, US
Varvara Roula Kollia - Santa Clara CA, US
Esha John - New York NY, US
Ryan M Field - Sunnyvale CA, US
International Classification:
G06F 1/32
G06F 3/041
G06F 9/54
G06F 13/40
G06F 9/46
G06F 3/041
G06F 9/54
G06F 13/40
G06F 9/46
Abstract:
An analog frontend (AFE) interface is dynamically programmable based on a determined operating state. The AFE includes hardware to interface with multiple different sensors. The AFE includes analog processing hardware that can select input data from one of the multiple sensors. The analog processing hardware is coupled to a processor that computes features from the sensor, where the features represent selected operating condition information of the AFE for the sensor. The processor is to determine one of multiple discrete operating states of the AFE for the sensor based on the computed features and dynamically adjust operation of the AFE to interface with the sensor based on the determined operating state. Dynamically adjusting the operation of the AFE includes controlling a configuration of the AFE that controls how the AFE receives the input sensor data from the sensor.