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Spatiotemporal event detection: a review

Manzhu Yu, Myra Bambacus, Guido Cervone, Keith Clarke, Daniel Duffy, Qunying Huang, Jing Li, Wenwen Li, Zhenlong Li, Qian Liu, Bernd Resch, Jingchao Yang (+1 others)
2020 International Journal of Digital Earth  
Spatiotemporal event detection serves as a gateway to enable a better understanding by detecting events that represent the abnormal status of relevant phenomena.  ...  This paper reviews the literature for different sensing capabilities, spatiotemporal event extraction methods, and categories of applications for the detected events.  ...  This community paper is one of a set of efforts to setup the foundation for future spatiotemporal studies/sciences. Yang, Yu and Bambacus initialized the concept for this paper.  ... 
doi:10.1080/17538947.2020.1738569 fatcat:urbuc2zii5bajjmmkzu6idyrg4

Automatic targeted-domain spatiotemporal event detection in twitter

Ting Hua, Feng Chen, Liang Zhao, Chang-Tien Lu, Naren Ramakrishnan
2016 Geoinformatica  
In this paper, we propose a semi-supervised method for Automatical Targeted-domain Spatiotemporal Event Detection (ATSED) in Twitter.  ...  Twitter has become an important data source for detecting events, especially tracking detailed information for events of a specific domain.  ...  Date Location Top In this paper, we propose a semi-supervised approach for detecting spatiotemporal events from Twitter, named Automatical Targeted-domain Spatiotemporal Event Detection (ATSED).  ... 
doi:10.1007/s10707-016-0263-0 fatcat:4pbrmd6ppzepbj5m6ivlf7vfe4

Spatiotemporal Features for Action Recognition and Salient Event Detection

Konstantinos Rapantzikos, Yannis Avrithis, Stefanos Kollias
2011 Cognitive Computation  
The resulting saliency volume is used to detect prominent spatiotemporal regions and consequently applied to action recognition and perceptually salient event detection in video sequences.  ...  In this paper, we propose a novel method to compute visual saliency from video sequences by counting in the actual spatiotemporal nature of the video.  ...  In this paper, we propose a computational framework for spatiotemporal saliency detection and exploit it to tackle the problems of representing, detecting and recognizing salient events in video sequences  ... 
doi:10.1007/s12559-011-9097-0 fatcat:galcmwtdnfhkzl3krvo324424m

Spatiotemporal extreme events in a laser with a saturable absorber

Cristina Rimoldi, Stéphane Barland, Franco Prati, Giovanna Tissoni
2017 Physical Review A  
We study extreme events occurring in the transverse (x,y) section of the field emitted by a broad-area semiconductor laser with a saturable absorber.  ...  We identify regions in the parameter space where extreme events are more likely to occur and we study the connection of those extreme events with the cavity solitons that are known to exist in the same  ...  This cut makes more stringent the criterion for the definition of extreme events. The typical number of remaining "events" detected during a simulation is around 6 × 10 5 .  ... 
doi:10.1103/physreva.95.023841 fatcat:llg6umhokvavdprzmagaibsiwe

Discovering spatiotemporal event sequences

Berkay Aydin, Rafal Angryk
2016 Proceedings of the 5th ACM SIGSPATIAL International Workshop on Mobile Geographic Information Systems - MobiGIS '16  
The detected solar event instances are object data with spatiotemporal characteristics [8] .  ...  The algorithm, firstly links the individual event instances by projecting a detected object forward using the known differential rotation of the solar surface and searching for the potential detections  ...  Another observation we can make from both Figure 6 .3 and Figure 6 .4 is that the total running times of the algorithms are dominated by the initialization times, where we apply the spatiotemporal operations  ... 
doi:10.1145/3004725.3004735 fatcat:3m7tehj3yjawdg2htdvuwn6guu

Extreme events following bifurcation to spatiotemporal chaos in a spatially extended microcavity laser

S. Coulibaly, M. G. Clerc, F. Selmi, S. Barbay
2017 Physical Review A  
The occurrence of extreme events in a spatially extended microcavity laser has been recently reported [Selmi et al., Phys. Rev.  ...  We assign the observed mechanism of generation of extreme events to quasiperiodic extended spatiotemporal intermittency.  ...  This threshold introduces a more stringent criterion for extreme events detection. Extreme events are depicted in red under the histograms presented in Fig. 2 .  ... 
doi:10.1103/physreva.95.023816 fatcat:c3rx7xmnt5b6vopmhxb7fft2w4

Anomalous Behaviour Detection Using Spatiotemporal Oriented Energies, Subset Inclusion Histogram Comparison and Event-Driven Processing [chapter]

Andrei Zaharescu, Richard Wildes
2010 Lecture Notes in Computer Science  
This paper proposes a novel approach to anomalous behaviour detection in video. The approach is comprised of three key components.  ...  First, distributions of spatiotemporal oriented energy are used to model behaviour.  ...  Background subtraction techniques that model typical appearance from a camera view can be applied to detecting behaviour anomalies (see, [27] for review and, e.g., [14, 20, 36, 17] for a sampling of  ... 
doi:10.1007/978-3-642-15549-9_41 fatcat:lcjli3zsrfhdfbnmjojogmmdke

Recognizing Events in Spatiotemporal Soccer Data

Victor Khaustov, Maxim Mozgovoy
2020 Applied Sciences  
However, spatiotemporal datasets usually do not include event information, which means it has to be reconstructed automatically.  ...  We propose a rule-based algorithm for identifying several basic types of events in soccer, including ball possession, successful and unsuccessful passes, and shots on goal.  ...  Conclusions We designed and implemented a rule-based algorithm for event detection in a spatiotemporal soccer dataset.  ... 
doi:10.3390/app10228046 fatcat:rroubgt5k5gshbmhskna6tmxzq

Perceived numerosity of spatiotemporal events

Jüri Allik, Tiia Tuulmets
1993 Perception & Psychophysics  
Two basic numerosity biases previously found for static dot patterns-inhibitory overestimation and satellite underestimation-were demonstrated for items distributed randomly over a spatiotemporal interval  ...  The comments of Norman Ginsburg and two anonymous reviewers on an earlier version of the manuscript were very helpful.  ...  In this respect, it is interesting that the detectability of stationary or moving target dot forms embedded in a background of a spatiotemporally varying noise dot pattern was found to decrease linearly  ... 
doi:10.3758/bf03206789 pmid:8483709 fatcat:blltsbxcsnh5xkf25ihzlresf4

Threat-Event Detection for Distributed Networks Based on Spatiotemporal Markov Random Field

Haishou Ma, Yi Xie, Shensheng Tang, Jiankun Hu, Xingcheng Liu
2020 IEEE Transactions on Dependable and Secure Computing  
Different from existing victim-centric approaches, in this work we propose a new network-centric approach for the detection of distributed threat-events.  ...  Network events are detected by the dynamic behavior analysis of the distributed networks.  ...  ACKNOWLEDGMENT The authors would like to thank all anonymous reviewers for their valuable comments to improve this work.  ... 
doi:10.1109/tdsc.2020.3036664 fatcat:vk7wcah6fjaxvkhv4u2d5ioole

Spatiotemporal Event Forecasting in Social Media [chapter]

Liang Zhao, Feng Chen, Chang-Tien Lu, Naren Ramakrishnan
2015 Proceedings of the 2015 SIAM International Conference on Data Mining  
In this paper, we propose a generative model for spatiotemporal event forecasting in Twitter.  ...  Our model characterizes the underlying development of future events by jointly modeling the structural contexts and spatiotemporal burstiness.  ...  Event detection: A large body of work focuses on the detection of ongoing events [2, 10, 17, 18, 22] .  ... 
doi:10.1137/1.9781611974010.108 dblp:conf/sdm/ZhaoCLR15 fatcat:eimhhlthqzcepl7ctigufh3tue

Spatiotemporal features for asynchronous event-based data

Xavier Lagorce, Sio-Hoi Ieng, Xavier Clady, Michael Pfeiffer, Ryad B. Benosman
2015 Frontiers in Neuroscience  
A novel computational architecture for learning and encoding spatiotemporal features is introduced based on a set of predictive recurrent reservoir networks, competing via winner-take-all selection.  ...  This article addresses the problem of learning and recognizing features for event-based vision sensors, which capture properties of truly spatiotemporal volumes of sparse visual event information.  ...  This regular sampling of visual information imposes an artificial timing for events detected in a natural scene.  ... 
doi:10.3389/fnins.2015.00046 pmid:25759637 pmcid:PMC4338664 fatcat:fasbflm6r5gcno4om2t3ki5luy

Spatiotemporal Rogue Events in Optical Multiple Filamentation

Simon Birkholz, Erik T. J. Nibbering, Carsten Brée, Stefan Skupin, Ayhan Demircan, Goëry Genty, Günter Steinmeyer
2013 Physical Review Letters  
There is a particular rich variety of optical systems that exhibit rogue events [10], e.g., nonlinear optical fiber propagation.  ...  The multifilament scenario exhibits near-exponential probability density functions, with extreme events exceeding the significant wave height by more than a factor of 10.  ...  Within the observed multifilament dynamics, rogue events have been detected that exceed the significant fluence by more than a factor of 10 and exhibit near-exponential probability distribution functions  ... 
doi:10.1103/physrevlett.111.243903 pmid:24483663 fatcat:3h6ywkdufbb2xhaoar33lci3ai

Spatiotemporal social media analytics for abnormal event detection and examination using seasonal-trend decomposition

Junghoon Chae, Dennis Thom, Harald Bosch, Yun Jang, Ross Maciejewski, David S. Ebert, Thomas Ertl
2012 2012 IEEE Conference on Visual Analytics Science and Technology (VAST)  
Such spatiotemporal data has immense value for increasing situational awareness of local events, providing insights for investigations and understanding the extent of incidents, their severity, and consequences  ...  In order to find and understand abnormal events, the analyst can first extract major topics from a set of se- lected messages and rank them probabilistically using Latent Dirichlet Allocation.  ...  We would like to thank the reviewers for their valuable suggestions and comments, which helped to improve the presentation of this work.  ... 
doi:10.1109/vast.2012.6400557 dblp:conf/ieeevast/ChaeTBJMEE12 fatcat:gevduox26fdddipfh5go3dqexa

Spatiotemporal Chaos Induces Extreme Events in an Extended Microcavity Laser

F. Selmi, S. Coulibaly, Z. Loghmari, I. Sagnes, G. Beaudoin, M. G. Clerc, S. Barbay
2016 Physical Review Letters  
We present experimental and numerical results on the physics of extreme events appearance in a spatially extended semiconductor microcavity laser with intracavity saturable absorber.  ...  We have identified parameter regions where extreme events are encountered and established the origin of this dynamics in the emergence of deterministic spatiotemporal chaos, through the correspondence  ...  This threshold introduces a more stringent criterion for the extreme events detection. Extreme events are depicted in red under the histograms presented in Fig. 2 .  ... 
doi:10.1103/physrevlett.116.013901 pmid:26799020 fatcat:lz5bl2th4nhwxa2som3fa6evte
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