scholarly journals Filtering features for a composite event definition language

2006 ◽  
Author(s):  
S.D. Urban ◽  
I. Biswas ◽  
S.W. Dietrich
Keyword(s):  
Composite Event ◽  
Event Definition

RFID composite event definition and detection

2008 ◽  
Author(s):  
Omar Gonzalez-Padilla ◽  
Felix Ramos-Corchado ◽  
Herwig Unger
Keyword(s):  
Composite Event ◽  
Event Definition

scholarly journals Accuracy of a composite event definition for hypoglycemia

2019 ◽  
Vol 28 (5) ◽  
pp. 625-631
Author(s):  
Jea Young Min ◽  
Caroline A. Presley ◽  
Jennifer Wharton ◽  
Marie R. Griffin ◽  
Robert A. Greevy ◽  
...  
Keyword(s):  
Composite Event ◽  
Event Definition

Game-Changing Event Definition and Detection in an eSports Corpus

2015 ◽  
Author(s):  
Emily Olshefski
Keyword(s):  
Event Definition

scholarly journals Estimating Rain Rates from Tipping-Bucket Rain Gauge Measurements

2008 ◽  
Vol 25 (1) ◽  
pp. 43-56 ◽  
Author(s):  
Jianxin Wang ◽  
Brad L. Fisher ◽  
David B. Wolff
Keyword(s):  
Rain Rate ◽  
Tropical Rainfall Measuring Mission ◽  
Rain Gauge ◽  
Radar Reflectivity ◽  
Time Shift ◽  
Estimation Errors ◽  
Rate Estimation ◽  
Reflectivity Data ◽  
Rain Rates ◽  
Event Definition

Abstract This paper describes the cubic spline–based operational system for the generation of the Tropical Rainfall Measuring Mission (TRMM) 1-min rain-rate product 2A-56 from tipping-bucket (TB) gauge measurements. A simulated TB gauge from a Joss–Waldvogel disdrometer is employed to evaluate the errors of the TB rain-rate estimation. These errors are very sensitive to the time scale of rain rates. One-minute rain rates suffer substantial errors, especially at low rain rates. When 1-min rain rates are averaged over 4–7-min intervals or longer, the errors dramatically reduce. Estimated lower rain rates are sensitive to the event definition whereas the higher rates are not. The median relative absolute errors are about 22% and 32% for 1-min rain rates higher and lower than 3 mm h−1, respectively. These errors decrease to 5% and 14% when rain rates are used at the 7-min scale. The radar reflectivity–rain-rate distributions drawn from the large amount of 7-min rain rates and radar reflectivity data are mostly insensitive to the event definition. The time shift due to inaccurate clocks can also cause rain-rate estimation errors, which increase with the shifted time length. Finally, some recommendations are proposed for possible improvements of rainfall measurements and rain-rate estimations.

Cooperative Object Tracking and Composite Event Detection With Wireless Embedded Smart Cameras

2010 ◽  
Vol 19 (10) ◽  
pp. 2614-2633 ◽  
Author(s):  
Youlu Wang ◽  
Senem Velipasalar ◽  
Mauricio Casares
Keyword(s):  
Object Tracking ◽  
Event Detection ◽  
Smart Cameras ◽  
Composite Event ◽  
Embedded Smart Cameras ◽  
Composite Event Detection

Dagstuhl Seminar on the Foundations of Composite Event Recognition

2021 ◽  
Vol 49 (4) ◽  
pp. 24-27
Author(s):  
Alexander Artikis ◽  
Thomas Eiter ◽  
Alessandro Margara ◽  
Stijn Vansummeren
Keyword(s):  
Event Recognition ◽  
Event Data ◽  
Composite Event ◽  
Geographically Distributed

Composite event recognition (CER) is concerned with continuously matching patterns in streams of 'event' data over (geographically) distributed sources. This paper reports the results of the Dagstuhl Seminar "Foundations of Composite Event Recognition" held in 2020.

Composite Event Processing for Data Streams and Domain Knowledge

2011 ◽  
Vol 219-220 ◽  
pp. 927-931
Author(s):  
Jun Qiang Liu ◽  
Xiao Ling Guan
Keyword(s):  
Query Optimization ◽  
Data Streams ◽  
Domain Knowledge ◽  
Semantic Information ◽  
Query Language ◽  
Processing System ◽  
Optimization Techniques ◽  
Research Attention ◽  
Composite Event ◽  
Solid Foundation

In recent years the processing of composite event queries over data streams has attracted a lot of research attention. Traditional database techniques were not designed for stream processing system. Furthermore, example continuous queries are often formulated in declarative query language without specifying the semantics. To overcome these deficiencies, this article presents the design, implementation, and evaluation of a system that executes data streams with semantic information. Then, a set of optimization techniques are proposed for handling query. So, our approach not only makes it possible to express queries with a sound semantics, but also provides a solid foundation for query optimization. Experiment results show that our approach is effective and efficient for data streams and domain knowledge.

ER designer toolkit: a graphical event definition authoring tool

2013 ◽  
Vol 13 (1) ◽  
pp. 115-123 ◽  
Author(s):  
Pythagoras Karampiperis ◽  
Giannis Mouchakis ◽  
Georgios Paliouras ◽  
Vangelis Karkaletsis
Keyword(s):  
Authoring Tool ◽  
Event Definition
Sign in / Sign up

Export Citation Format

Share Document