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REPOSE: Distributed Top-k Trajectory Similarity Search with Local Reference Point Tries [article]

Bolong Zheng, Lianggui Weng, Xi Zhao, Kai Zeng, Xiaofang Zhou, Christian S. Jensen
2021 arXiv   pre-print
As a result, means of performing distributed in-memory trajectory similarity search are called for.  ...  We propose a distributed in-memory management framework called REPOSE for processing top-k trajectory similarity queries on Spark.  ...  Specifically, we choose the variant DFT-RB+DI that has the best query performance and the largest space overhead. 2) DITA: An in-memory distributed range query algorithm.  ... 
arXiv:2101.08929v2 fatcat:pt7nzqbnefasxnahkzwyigretq

A Survey on Spatio-temporal Data Analytics Systems [article]

Md Mahbub Alam and Luis Torgo and Albert Bifet
2021 arXiv   pre-print
the area of spatial and spatio-temporal data analytics in the past decade.  ...  This survey also portrays the importance and future of spatial and spatio-temporal data analytics.  ...  [210] developed DITA, a distributed in-memory trajectory analytics system, where one can use both SQL and Dataframe API for trajectory analysis.  ... 
arXiv:2103.09883v1 fatcat:ndpqz67bvnghpng36o3liqlr2q

ST2Vec: Spatio-Temporal Trajectory Similarity Learning in Road Networks [article]

Ziquan Fang, Yuntao Du, Xinjun Zhu, Lu Chen, Yunjun Gao, Christian S. Jensen
2021 arXiv   pre-print
To the best of our knowledge, this is the first deep-learning proposal for spatio-temporal trajectory similarity analytics.  ...  People and vehicle trajectories embody important information of transportation infrastructures, and trajectory similarity computation is functionality in many real-world applications involving trajectory  ...  Category Methods TP [22] DITA [26] LCRS [44] NetERP [14] HR@10 HR@50 R10@50 HR@10 HR@50 R10@50 HR@10 HR@50 R10@50 HR@10 HR@50 R10@50 Since we target trajectory similarity analytics in road networks  ... 
arXiv:2112.09339v1 fatcat:gwjnlvoj7bgh5ca3bicmxxdxbq

DFTHR: A Distributed Framework for Trajectory Similarity Query Based on HBase and Redis

Jiwei Qin, Liangli Ma, Qing Liu
2019 Information  
In recent years positioning sensors have become ubiquitous, and there has been tremendous growth in the amount of trajectory data.  ...  A distributed framework for the similarity query of massive trajectory data is urgently needed.  ...  [12] design a distributed in-memory trajectory analytics prototype system called DITA (Distributed In-Memory Trajectory Analytics) based on Spark.  ... 
doi:10.3390/info10020077 fatcat:jlweuk3durbxvkcgbafpqtofvq

A Resilient Large-Scale Trajectory Index for Cloud-Based Moving Object Applications

Omar Alqahtani, Tom Altman
2020 Applied Sciences  
In most cases, the experiments show a significant performance improvement compared to various indexing schemes on a compact trajectory dataset as well as a sparse dataset.  ...  The processing of these large-scale trajectories requires innovative techniques that are capable of adapting to changes in cloud systems to satisfy a wide range of applications and non-programmer end users  ...  Partitioning and distributing the trajectories dominate the construction time. DTR only depends on one dimension in distributing the data, while LSpark uses a hierarchical spatial tree.  ... 
doi:10.3390/app10207220 fatcat:m454aa2qkfg2dbm7elayrkghqy

An integrated big and fast data analytics platform for smart urban transportation management

Sandro Fiore, Donatello Elia, Carlos E. Pires, Demetrio G. Mestre, Cinzia Cappiello, Monica Vitali, Nazareno Andrade, Tarciso Braz, Daniele Lezzi, Regina Moraes, Tania Basso, Nadia P. Kozievitch (+7 others)
2019 IEEE Access  
INDEX TERMS Big data, cloud computing, data analytics, data privacy, data quality, distributed environment, public transport management, smart city.  ...  The solution proposed in this paper joins together a scalable big and fast data analytics platform, a flexible and dynamic cloud infrastructure, data quality and entity matching algorithms as well as security  ...  , smart data distribution and in-memory I/O.  ... 
doi:10.1109/access.2019.2936941 fatcat:rxmbsdulvzgarfmdncrla3fhoi

Differential Games of Multiple Agents and Geometric Structures [chapter]

Panos M. Pardalos, Vitaliy A. Yatsenko, Altannar Chinchuluun, Artyom G. Nahapetyan
2008 Pareto Optimality, Game Theory And Equilibria  
In the case of two agents, these optimality conditions allow us to construct the optimal maneuvers geometrically.  ...  In addition we also consider a cooperative problem when the agent's motions must satisfy a separation constraint throughout the encounter to be conflict-free.  ...  the analytic case everywhere).  ... 
doi:10.1007/978-0-387-77247-9_11 fatcat:nio6vqya5bdktin2ix3ngczlcm

A Survey on Trajectory Data Management, Analytics, and Learning [article]

Sheng Wang, Zhifeng Bao, J. Shane Culpepper, Gao Cong
2020 arXiv   pre-print
In this survey, we comprehensively review recent research trends in trajectory data management, ranging from trajectory pre-processing, storage, common trajectory analytic tools, such as querying spatial-only  ...  We also explore four closely related analytical tasks commonly used with trajectory data in interactive or real-time processing. Deep trajectory learning is also reviewed for the first time.  ...  selection plays a critical role in system performance of trajectory analytics.  ... 
arXiv:2003.11547v2 fatcat:5gf5h5skqjbrhf67cflygggnky

Statistical steady state in turbulent droplet condensation

Christoph Siewert, Jérémie Bec, Giorgio Krstulovic
2016 Journal of Fluid Mechanics  
The statistical steady state is characterized by an exponential tail in the droplet mass distribution.  ...  The main mechanism involved in this convergence is a loss of memory induced by a significant number of droplets undergoing a complete evaporation before growing again.  ...  Measuring the supersaturation in the presence of drops is difficult (Ditas et al. 2012 ).  ... 
doi:10.1017/jfm.2016.712 fatcat:3aeaed64ynccrdpz77c76sqn34

A new regional geography of a revolution: Bosnia's Plenum movement

James Riding
2016 Territory, Politics, Governance  
This article sheds light on a recent reawakening of radical politics in the former Yugoslavia.  ...  It focuses on citizens living radical politics after socialism, as new groups and movements in the region struggle to embed radically democratic visions of society.  ...  Class solidarity was enabled again because people still have a living memory of socialism.  ... 
doi:10.1080/21622671.2016.1260491 fatcat:hixaf4uxtfeadipku44lscd73e

Page 1657 of Mathematical Reviews Vol. 24, Issue Index [page]

Mathematical Reviews  
1657 1992 Bonci, Luca (with Grigolini, Paolo) Threshold effects in the transport of energy from a hot to acold oscillator. 92i:82086 Boutet de Monvel-Berthier, Anne-Marie (with Dita, Petre) Analytic solution  ...  Memory effects upon the relaxation dynamics of the Wigner distribution function. 92f:82041 Hu, Gang (with Zhu, Shun Quan) Probability hole at a deterministic saddle in a colored noise system.  ... 

Study Protocol for the Effects of Artificial Intelligence (AI)-Supported Automated Nutritional Intervention on Glycemic Control in Patients with Type 2 Diabetes Mellitus

Rie Oka, Akihiro Nomura, Ayaka Yasugi, Mitsuhiro Kometani, Yuko Gondoh, Kenichi Yoshimura, Takashi Yoneda
2019 Diabetes Therapy  
Nutritional intervention is effective in improving glycemic control in patients with type 2 diabetes but requires large inputs of manpower.  ...  The aim of this study is to test the hypothesis that AI-supported nutritional intervention is as efficacious as the in-person, face-to-face method in terms of improving glycemic control in patients with  ...  for example, patients seen individually on a weekly basis in the Look AHEAD trial [6] and on a once-monthly basis in the MÈ DITA Randomized Trial [7] .  ... 
doi:10.1007/s13300-019-0595-5 pmid:30877556 pmcid:PMC6531593 fatcat:nklfpolx7rfbfadkrqjvyminwa

2019 Canadian Spine Society Abstracts

2019 Canadian journal of surgery  
From the 1 Maastricht University, Maastricht, the Netherlands; 2 Lakehead University, Thunder Bay, Canada; the 3 Canadian Memorial Chiropractic College, North York, Canada; 4 McMaster University, Hamilton  ...  trajectories.  ...  The group-based trajectory models identified 4 unique leg pain trajectories, and 3 trajectories each for back pain and disability.  ... 
doi:10.1503/cjs.010919 pmid:31290642 pmcid:PMC6684336 fatcat:j4stltxcmvfzpkqo2ibd3tuida

Atas do X Simpósio Nacional de Investigação em Psicologia, Universidade da Madeira, 2019

David L. Rodrigues, Margarida Pocinho, Diniz Lopes
2020 Psicologia  
However, both regions are thought to be involved in the same memory processes.  ...  One hundred and twenty-five questionnaires were distributed in the first data collection moment (i.e., time 1), of which 115 were returned.  ...  Career adaptability is the "readiness to cope with the predictable tasks of preparing for and participating in the work role and with the unpredictable adjustments prompted by changes in work and working  ... 
doi:10.17575/psicologia.v34i1.1681 fatcat:rpe22bdn3ncbbidaycotok6dke

Simulation models in biomechanics and experimental mechanics

Barbara <1976> Reggiani, Luca Cristofolini, Gabriele Vassura, Alessandro Freddi
This was done 3 times for each subject spreaded in time, except for the surgeon (subject 3), so that no memory was kept of the previous planning.  ...  Sviluppo di soluzioni innovative per la struttura meccanica di dita articolate per mani robotiche.  ... 
doi:10.6092/unibo/amsdottorato/542 fatcat:olwvlfsvqfgshmi5mlpfxt52ty
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