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Query processing of massive trajectory data based on mapreduce

Qiang Ma, Bin Yang, Weining Qian, Aoying Zhou
2009 Proceeding of the first international workshop on Cloud data management - CloudDB '09  
We explore a new approach to this target in this paper, presenting a new framework for query processing over trajectory data based on MapReduce.  ...  We also show that the append-only scheme of MapReduce storage model can be a nice base for handling updates of moving objects.  ...  We design a two-level hash index for object oriented queries.  ... 
doi:10.1145/1651263.1651266 dblp:conf/cikm/MaYQZ09 fatcat:olmrbmwoxvbsjmgiataaiyheku

A Uniform Approach to Processing Temporal Queries

Umeshwar Dayal, Gene T. J. Wuu
1992 Very Large Data Bases Conference  
In this paper, we propose a uniform framework for processing temporal queries, which builds upon well-understood techniques for processing non-temporal queries.  ...  A major benefit to this approach is that temporal query processing can be smoothly extended from an existing (non-temporal) query processing framework.  ...  In this paper, we propose a uniform framework for pro-cessing temporal queries that builds upon well-understood techniques for processing non-temporal queries.  ... 
dblp:conf/vldb/DayalW92 fatcat:aqom44amyjdrjda7f43jhggani

Integrating Spatial and Temporal Relationship Operators into SQL3 for Historical Data Management

Jong-Yun Lee Lee
2002 ETRI Journal  
Finally, we believe the integration of spatial and temporal relationship operators into SQL3 w ill provide a useful framework for the history management of timevarying spatial objects in a uniform manner  ...  To overcome this limitation, we present a framework for spatio-temporal databases that can manage all time -varying historical information and integrate spatial and temporal relationship operators into  ...  ACKNOWLEDGEMENT The author would like to thank the anonymous reviewers and Juli Scherer for their helpful valuable comments and suggestions.  ... 
doi:10.4218/etrij.02.0102.0307 fatcat:za32uip4azev7nx4wds433gkle

Scalable and Fast Top-k Most Similar Trajectories Search Using MapReduce In-Memory [chapter]

Douglas Alves Peixoto, Nguyen Quoc Viet Hung
2016 Lecture Notes in Computer Science  
environments, or consider parallelization of k -NN search for simpler spatial objects (i.e. 2D points) using MapReduce, but ignore the temporal dimension of spatial-temporal trajectories.  ...  We propose a space/time data partitioning based on Voronoi diagrams and time pages, named Voronoi Pages, in order to provide both spatial-temporal data organization and process decentralization.  ...  This research is partially supported by the Brazilian National Council for Scientific and Technological Development (CNPq).  ... 
doi:10.1007/978-3-319-46922-5_18 fatcat:uq2dduh3ene2lpj6wwi33wkqqy

The SPADES Framework for Scalable Management of Spatio-textual Data

Akrivi Vlachou, Christos Doulkeridis, Nikolaos Koutroumanis, Dimitrios Poulopoulos, Kjetil Nørvåg
2020 Panhellenic Conference on Informatics  
This is coupled with a processing layer that encompasses algorithms both for centralized and parallel processing.  ...  In this paper, we provide an overview of our contributions in this field, both for centralized and parallel processing.  ...  ACKNOWLEDGMENTS This project has received funding from the Hellenic Foundation for Research and Innovation (HFRI) and the General Secretariat for Research and Technology (GSRT), under grant agreement No  ... 
doi:10.1145/3437120.3437293 dblp:conf/pci/VlachouDKPN20 fatcat:hngdbsr2zfgu3mjrg35lko63ju

Representing Complex Geographic Phenomena in GIS

May Yuan
2001 Cartography and Geographic Information Science  
To this end, a new conceptual framework is proposed in this research for organizing data about such complex geographic phenomena in a GIS as a hierarchy of events, processes, and states.  ...  The proposed approach greatly enhances support for complex spatio-temporal queries on the behavior and relationships of events and processes. May Yuan is Associate Professor at the Figure 8 .  ...  David Bennett for their constructive comments. The author also would like to thank Dr. Chunlang Deng for his assistance on implementing the conceptual framework and queries.  ... 
doi:10.1559/152304001782173718 fatcat:n7amz2tabrf5naycjimb4yvnpm

MOTR: End-to-End Multiple-Object Tracking with Transformer [article]

Fangao Zeng, Bin Dong, Yuang Zhang, Tiancai Wang, Xiangyu Zhang, Yichen Wei
2022 arXiv   pre-print
Temporal modeling of objects is a key challenge in multiple object tracking (MOT). Existing methods track by associating detections through motion-based and appearance-based similarity heuristics.  ...  MOTR can serve as a stronger baseline for future research on temporal modeling and Transformer-based trackers. Code is available at https://github.com/megvii-research/MOTR.  ...  TransMOT [8] builds a spatial-temporal graph transformer for association. Our concurrent works, TransTrack [29] and TrackFormer [18] also develop Transformer-based frameworks for MOT.  ... 
arXiv:2105.03247v4 fatcat:otfeu66jxbf6zolffdu3geuoau

A framework to enhance semantic flexibility for analysis of distributed phenomena

J. McIntosh, M. Yuan
2005 International Journal of Geographical Information Science  
Furthermore, the proposed framework maintains object identity, necessary for many types of temporal analysis. A prototype for rainfall has been developed as a proof of concept.  ...  For example, querying for lowintensity processes that contain higher intensity processes that have a significant range in speeds may suggest rainstorms with rotation.  ... 
doi:10.1080/13658810500197652 fatcat:btxlixw6tzfuxd73nahgxc2g44

An Integrated Software Framework to Support Semantic Modeling and Reasoning of Spatiotemporal Change of Geographical Objects: A Use Case of Land Use and Land Cover Change Study

Wenwen Li, Xiran Zhou, Sheng Wu
2016 ISPRS International Journal of Geo-Information  
These challenges stem from the fact that change in one or more dimensions can cause a spatial object to split into multiple objects, merge with another spatial object(s) or dissolve into a new object.  ...  These challenges stem from the fact that change in one or more dimensions can cause a spatial object to split into multiple objects, merge with another spatial object(s) or dissolve into a new object.  ...  For the second case (Figure 1b) , local attributes change within an otherwise globally-uniform object.  ... 
doi:10.3390/ijgi5100179 fatcat:k2oh2cizo5dttgtvlvjtrgkl6q

GeoDec

Luciano Nocera, Arjun Rihan, Songhua Xing, Ali Khodaei, Ali Khoshgozaran, Farnoush Banaei-Kashani, Cyrus Shahabi
2009 Proceedings of the 17th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems - GIS '09  
In this paper, we present and demonstrate GeoDec, a generic framework capable of supporting queries and visualizations of realworld geospatial data sets.  ...  We show, for various locations and applications, how our innovative Query Driven Design enhances the visual analysis of geospatial data through the interactive manipulation of queries and query results  ...  to specify queries and receive the results back in a uniform language hiding the source of information.  ... 
doi:10.1145/1653771.1653869 dblp:conf/gis/NoceraRXKKKS09 fatcat:2bshzl6xzvfrpn6iovjzvnmara

Assessing multimedia similarity

Vasilis Delis, Dimitris Papadias, Nikos Mamoulis
1998 Proceedings of the sixth ACM international conference on Multimedia - MULTIMEDIA '98  
We propose a binary string encoding for 1D relations which permits the automatic derivation of similarity measures.  ...  In this paper we address the issue of structural multimedia similarity, which is based on the relations between the individual objects that comprise a multimedia document.  ...  He also acknowledges a PhD studentship from Bodosakis Foundation.  ... 
doi:10.1145/290747.290797 dblp:conf/mm/DelisPM98 fatcat:pjfzcoyssvg6jmg5h7hnki7tj4

Modelling Of Visual Feature Derivation In The Vizir Framework

Horst Eidenberger
2004 Zenodo  
ACKNOWLEDGEMENTS The author would like to thank Christian Breiteneder and Roman Divotkey for their valuable suggestions for improvement.  ...  Spatio-Temporal Locators exist as Figure Trajecto ries for non-rigid objects and as Parameter Trajectories for rigid objects.  ...  By that, images and videos can be accessed with a uniform API.  ... 
doi:10.5281/zenodo.38261 fatcat:zvzez7ogwngfbdqa2ccelfgxsu

EKO: Adaptive Sampling of Compressed Video Data [article]

Jaeho Bang, Pramod Chunduri, Joy Arulraj
2021 arXiv   pre-print
These limitations lead to lower accuracy, higher query execution time, and larger memory footprint. In this paper, we present EKO, a storage engine for efficiently managing video data.  ...  First, it uses a novel unsupervised, adaptive sampling algorithm for identifying the key frames in a given video.  ...  FOCUS uses specialized models to pre-process videos. By grouping frames with similar objects and using expensive models only for harder-to-process frames, it reduces query execution time.  ... 
arXiv:2104.01671v1 fatcat:p2cemzvp5vc6bd6rspeeq56r7e

Trajectory Clustering and k-NN for Robust Privacy Preserving k-NN Query Processing in GeoSpark

Elias Dritsas, Andreas Kanavos, Maria Trigka, Gerasimos Vonitsanos, Spyros Sioutas, Athanasios Tsakalidis
2020 Algorithms  
Specifically, it works on the top of Apache Spark, the main framework leveraged from the research community and organizations for big data transformation, processing and visualization.  ...  To this end, we focused on trajectory data representation so as to be applicable to the GeoSpark environment, and a GeoSpark-based approach is designed for the efficient management of real spatio-temporal  ...  Distributed Frameworks for Spatio-Temporal data Queries Processing Due to the explosive growth of spatio-temporal data, the domain of distributed execution of spatial queries has gained considerable concern  ... 
doi:10.3390/a13080182 fatcat:cqqosen2fjc67ebizgmci4nsrq

Qualitative design support for engineering and architecture

C.P.L. Schultz, R. Amor, B. Lobb, H.W. Guesgen
2009 Advanced Engineering Informatics  
In this paper, we establish a complete framework for developing qualitative support tools that directly address these shortcomings.  ...  Qualitative temporal reasoning Engineering and architecture design support a b s t r a c t Conventional design support software tools cannot effectively manage the complex, heterogeneous information used  ...  Each process in the framework consists of principles that are used to drive practical strategies for applying QSTR.  ... 
doi:10.1016/j.aei.2008.07.003 fatcat:hu36mt6z7zdvzexrozi7ipgcky
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