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Efficient MaxCount and threshold operators of moving objects
2008
Geoinformatica
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This paper presents the following six d-dimensional moving object operators: (1) MaxCount (or MinCount), which finds the Maximum (or Minimum) number of moving objects simultaneously present in the dynamic ...
Calculating operators of continuously moving objects presents some unique challenges, especially when the operators involve aggregation or the concept of congestion, which happens when the number of moving ...
Open Access This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided ...
doi:10.1007/s10707-008-0050-7
fatcat:axof2ctt2vc2pjqy53hfpphn4y
Efficient Threshold Aggregation of Moving Objects
[article]
2007
arXiv
pre-print
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Calculating aggregation operators of moving point objects, using time as a continuous variable, presents unique problems when querying for congestion in a moving and changing (or dynamic) query space. ...
We present a set of congestion query operators, based on a threshold value, that estimate the following 5 aggregation operations in d-dimensions. 1) We call the count of point objects that intersect the ...
Together MaxCount (MinCount) and the threshold operators form a complete set of threshold aggregation operators comparable to the aggregation operators given in relational databases. ...
arXiv:cs/0611031v2
fatcat:s6tsdmvetngszndxfcx6rwvure
Fuzzy logic in the multi-agent financial decision support system
2015
Proceedings of the 2015 Federated Conference on Computer Science and Information Systems
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The first part of the article contains a discussion related to the use of fuzzy logic as an agents' knowledge representation. ...
The article presents the application of a fuzzy logic in building the trading agents of the a-Trader system. The system supports investment decisions on the FOREX market. ...
and the EMA benchmark (Exponential Moving Average --a type of moving average that is similar to a simple moving average, except that more weight is given to the latest data). ...
doi:10.15439/2015f155
dblp:conf/fedcsis/KorczakHB15
fatcat:eay4gpu5fve4xnhtjzjob2nyhm
The Use of Precomputed Triangle Clusters for Accelerated Ray Tracing in Dynamic Scenes
2009
Computer graphics forum (Print)
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This heuristic combines the density of connectivity, geometric size and the shape of the cluster. ...
Our approach accelerates the BVH builder by an order of magnitude rebuilding only the set of clusters that is much smaller than the original set of triangles. ...
Acknowledgements The author thanks Erica Darkina and anonymous reviewers for providing feedback on the paper. ...
doi:10.1111/j.1467-8659.2009.01497.x
fatcat:j77dyw6wa5g5no3vqpccmxwnuy
DARC
2008
Performance Evaluation Review
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OSprof is a versatile, portable, and efficient profiling methodology based on the analysis of latency distributions. ...
These latency distributions are presented as histograms and contain distinct groups of data, called peaks, that characterize the overall behavior of the running code. ...
The idea for this work and an initial design were inspired while on internship at IBM Haifa Research Labs. ...
doi:10.1145/1384529.1375489
fatcat:pjdp7k3zefbftcsqprw3abbz7e
DARC
2008
Proceedings of the 2008 ACM SIGMETRICS international conference on Measurement and modeling of computer systems - SIGMETRICS '08
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OSprof is a versatile, portable, and efficient profiling methodology based on the analysis of latency distributions. ...
These latency distributions are presented as histograms and contain distinct groups of data, called peaks, that characterize the overall behavior of the running code. ...
The idea for this work and an initial design were inspired while on internship at IBM Haifa Research Labs. ...
doi:10.1145/1375457.1375489
dblp:conf/sigmetrics/TraegerDZ08
fatcat:uapwzc7hejh7xhymdqrkr6krma
Response time driven multimedia data objects allocation for browsing documents in distributed environments
1999
IEEE Transactions on Knowledge and Data Engineering
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Distributed information processing, in many world wide web applications, requires access, transfer, and synchronization of large multimedia data objects (MDOs) (such as, audio, video, and images) across ...
Moreover, the end users have started expecting very fast response times and high quality of service. ...
This operation can be applied to each MDO, and an MDO can be moved to any one of the m -1 sites at which it is not located. ...
doi:10.1109/69.774100
fatcat:25uibfcirrcvdk4cpakiauvmxm
A metric for sets of trajectories that is practical and mathematically consistent
[article]
2020
arXiv
pre-print
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Metrics on the space of sets of trajectories are important for scientists in the field of computer vision, machine learning, robotics, and general artificial intelligence. ...
Our notion of closeness is the first demonstrating the following three features: the metric 1) can be quickly computed, 2) incorporates confusion of trajectories' identity in an optimal way, and 3) is ...
We have K maxcount (Σ) = 1 and K maxcount (Σ ) = 1 but K maxcount (Σ • Σ) = ∞ > K maxcount (Σ ) + K maxcount (Σ). Proof of Theorem 6. ...
arXiv:1601.03094v3
fatcat:ohjxwcq2xve55kne2nx5nyxfdi
A New Approach for License Plate Detection and Localization: Between Reality and Applicability
2015
International Business Research
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The results reveal that the proposed algorithm works perfectly on all kinds of license plates with 93.43% efficiency rate. </p> ...
A competent algorithm is proposed in this paper for number plate detection and localization based on segmentation and morphological operators. ...
In fact, the objects and their backgrounds are mostly complex in real-world images, therefore it is not always possible to achieve required best threshold. ...
doi:10.5539/ibr.v8n11p13
fatcat:nblls3w65rbyxhxkp3zaw2ku64
In-Network Processing of an Iceberg Join Query in Wireless Sensor Networks Based on 2-Way Fragment Semijoins
2015
Sensors
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This sequence filters non-joinable tuples in an energy-efficient way in WSNs. ...
An iceberg join is a special type of join where only those joined tuples whose cardinality exceeds a certain threshold (called iceberg threshold) are qualified for the result. ...
For example, based on the scenario in vehicle surveillance presented in [2] , let us consider the identification of the moving objects that have passed two particular regions in WSNs. ...
doi:10.3390/s150306105
pmid:25774710
pmcid:PMC4435171
fatcat:vf2krpiebrcjlot3qx4ucvotk4
Optimizing the Cyclic K-conflict-free Shortest Path Problem in a Network-on-chip
2017
International Journal of Computer & Software Engineering
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Adding or not the Dijkstra component, we study the impact of construction and improvement operations when adjusting the maxCount, maxConstruct, and maxImprove algorithm parameters. ...
In the iterated random search (IRS) method, the combination of construction/improvement operations are set to the values (maxCount,maxConstruct,maxImprove) = (50,1000,1000). ...
doi:10.15344/2456-4451/2017/115
fatcat:ddmwnae3gvehthpr35z24h4viy
The Neuroid revisited: A heuristic approach to model neural spike trains
2017
Research on Biomedical Engineering
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Methods: In an attempt to address this issue, a comparison between the Neuroid and the leaky-integrate-and-fire (LIF) model in terms of accuracy and computational cost was performed. ...
This is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original ...
Minaya Villasana for her valuable ideas and useful observations during the realization of this article. ...
doi:10.1590/2446-4740.02617
fatcat:f5pz4olwkrg55d2uv663g73pva
A novel coordinated resource provisioning approach for cooperative cloud market
2017
Journal of Cloud Computing: Advances, Systems and Applications
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The efficiency of the proposed algorithm has been tested using synthetic data and the simulation results presented herein demonstrate the superiority of the proposed approach over its non-coordinated counterparts ...
One of the most exciting and recent research areas in cloud computing has been cloud federations that can mitigate the aforesaid problems. ...
In other words, this coordination mechanism takes care of the fact that all cloud providers maintain a minimal number of virtual machines (threshold) for starting a new datacenter and the threshold value ...
doi:10.1186/s13677-017-0078-z
fatcat:xt6mqgomxfapfd3fxf33t75txa
A Dynamic Data Structure to Efficiently Find the Points below a Line and Estimate Their Number
2017
ISPRS International Journal of Geo-Information
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Acknowledgments: In this paper, Section 2 is based on the preliminary conference paper by Revesz [17] , while Sections 3 and 4 contain completely new results. ...
Selectivity estimation for moving point objects was considered by Anderson and Revesz [8] , Choi and Chung [9] and Sun et al. ...
The problem of estimating the number of points below a line is applicable to new cases of selectivity estimation in spatio-temporal or moving object database querying. ...
doi:10.3390/ijgi6030082
fatcat:mwozgjtfandznki5iuc4pb4z3q
Simplifying process model abstraction: Techniques for generating model names
2014
Information Systems
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A concrete problem is thus how to maintain these large repositories in such a way that their complexity does not hamper their practical usefulness as a means to describe and communicate business operations ...
The increased adoption of business process management approaches, tools, and practices has led organizations to accumulate large collections of business process models. ...
The mass of documentation stored in a process model repository poses considerable challenges for efficient and effective use of these models. ...
doi:10.1016/j.is.2013.06.007
fatcat:oulvrbfk4beexgwe4q4i2pkdlm
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