Filters








239 Hits in 1.3 sec

Dynamic hashing schemes

R. J. Enbody, H. C. Du
1988 ACM Computing Surveys  
A new type of dynamic file access called dynamic hushing has recently emerged. It promises the flexibility of handling dynamic tiles while preserving the fast access times expected from hashing.  ...  Such a fast, dynamic file access scheme is needed to support modern database systems. This paper surveys dynamic hashing schemes and examines their critical design issues.  ...  ACKNOWLEDGMENT This research was supported in part by NSF grants DCR-8405498 and DCR-8420935.  ... 
doi:10.1145/46157.330532 fatcat:e7y7v5r2cjbijd4l3os7f63fsi

A Practical Approach for Extending DSMLs by Composing their Metamodels

Anas Abouzahra, Ayoub Sabraoui, Karim Afdel
2018 Advances in Science, Technology and Engineering Systems  
Domain specific modeling (DSM) has become popular in the software development field during these last years.  ...  In doing so, it proposes three rules to compose DSMLs by composing there metamodels: reference rule, specialization rule and fusion rule.  ...  In addition, this extending mechanism limits a DSL to only extend one other. Regarding the dynamic semantics of the DSL, it can be implemented using other languages such as Xtend [64] .  ... 
doi:10.25046/aj030644 fatcat:wexxmriqnra5ffffayzd4cbwmy

g-Eclipse - an integrated framework to access and maintain Grid resources

Harald Gjermundrod, Marios D. Dikaiakos, Mathias Stumpert, Pawel Wolniewicz, Harald Kornmayer
2008 2008 9th IEEE/ACM International Conference on Grid Computing  
The Grid abstraction enables Grid application users to access the Grid in a desktop-like manner with wizards specific for common use cases; it also provides a set of visual configuration tools to maintain  ...  Acknowledgements This work was supported in part by the EU under projects g-Eclipse (#FP6-2005-IST-034327), CoreGRID (#IST-2002-004265), and the Eclipse foundation.  ...  and feel' to access an abstract storage space.  ... 
doi:10.1109/grid.2008.4662783 dblp:conf/grid/GjermundrodDSWK08 fatcat:alitrx2mirgc5n7wh6jpthxv5q

Redundant memory mappings for fast access to large memories

Vasileios Karakostas, Jayneel Gandhi, Furkan Ayar, Adrián Cristal, Mark D. Hill, Kathryn S. McKinley, Mario Nemirovsky, Michael M. Swift, Osman Ünsal
2015 SIGARCH Computer Architecture News  
We prototype RMM software in Linux and emulate the hardware.  ...  RMM translates each range with a single range table entry, enabling a modest number of entries to translate most of the process's address space.  ...  Hill has a significant financial interest in AMD.  ... 
doi:10.1145/2872887.2749471 fatcat:yy42iegwm5c3xedwgovisedtvu

Redundant memory mappings for fast access to large memories

Vasileios Karakostas, Jayneel Gandhi, Furkan Ayar, Adrián Cristal, Mark D. Hill, Kathryn S. McKinley, Mario Nemirovsky, Michael M. Swift, Osman Ünsal
2015 Proceedings of the 42nd Annual International Symposium on Computer Architecture - ISCA '15  
We prototype RMM software in Linux and emulate the hardware.  ...  RMM translates each range with a single range table entry, enabling a modest number of entries to translate most of the process's address space.  ...  Hill has a significant financial interest in AMD.  ... 
doi:10.1145/2749469.2749471 dblp:conf/isca/KarakostasGACHM15 fatcat:qug5bz6t45e4vo7up2t4gefzwa

Web-based document image processing

Frank L. Walker, George R. Thoma, Giordano B. Beretta, Raimondo Schettini
1999 Internet Imaging  
., differences in image file format, that lead to difficulties in the use of library document information.  ...  This is part of an ongoing intramural R&D program in document imaging that has spanned many aspects of electronic document conversion and preservation, Internet document transmission and document usage  ...  In this figure, if a newly arrived job is Job 4, the Job Switch will route this job to DocMorph 1, since it is processing one less job of type 4 than DocMorph2.  ... 
doi:10.1117/12.373468 fatcat:tcyoap4zjvgfxjliwdolfl26pa

Petri nets tools integration through Eclipse

Adilson Arcoverde, Gabriel Alves, Ricardo Lima
2005 Proceedings of the 2005 OOPSLA workshop on Eclipse technology eXchange - eclipse '05  
EZPetri is a perspective and a set of plug-ins of the Eclipse platform.  ...  In order to reduce the impact of this limitation the Petri Net Markup Language (PNML) has been proposed. PNML is an interchange file format for Petri nets based on XML.  ...  When the user presses over Design tab in the parent multipage editor, the graphical editor will be displayed.  ... 
doi:10.1145/1117696.1117715 dblp:conf/eclipse/ArcoverdeAL05 fatcat:2sdlepdto5cujnb2lpdwzr7hqy

The grid file: An adaptable, symmetric multi-key file structure [chapter]

J. Nievergelt, H. Hinterberger, K. C. Sevcik
1981 Lecture Notes in Computer Science  
They manifest various deficiencies in particular for multikey access to highly dynamic files.  ...  This leads to the notions of a grid partition of the search space and of a grid directory, which are the keys to a dynamic file structure called the grid file.  ...  Dynamic multipaging [21] is an extension designed to overcome the difficulty of handling insertions and deletions in the original multipaging method.  ... 
doi:10.1007/3-540-10885-8_45 fatcat:kj4n3qk6ofegheoaakiyto54bu

The Grid File: An Adaptable, Symmetric Multikey File Structure

J. Nievergelt, Hans Hinterberger, Kenneth C. Sevcik
1984 ACM Transactions on Database Systems  
They manifest various deficiencies in particular for multikey access to highly dynamic files.  ...  This leads to the notions of a grid partition of the search space and of a grid directory, which are the keys to a dynamic file structure called the grid file.  ...  Dynamic multipaging [21] is an extension designed to overcome the difficulty of handling insertions and deletions in the original multipaging method.  ... 
doi:10.1145/348.318586 fatcat:hzlg2b7ebjavjbyk2cxugnzdxi

Epsilon grid order

Christian Böhm, Bernhard Braunmüller, Florian Krebs, Hans-Peter Kriegel
2001 Proceedings of the 2001 ACM SIGMOD international conference on Management of data - SIGMOD '01  
In the experimental evaluation, a substantial improvement over competitive techniques is shown.  ...  In this paper, we propose the Epsilon Grid Order, a new algorithm for determining the similarity join of very large data sets.  ...  In contrast to approaches that use a directory structure such as the ε-kdB-tree [SSA 97] or the Multipage Index [BK 01] the EGO-join yields almost no space overhead for this separate optimization.  ... 
doi:10.1145/375663.375714 dblp:conf/sigmod/BohmBKK01 fatcat:gphnyz34zzdqnkopmsnyuzoeby

Epsilon grid order

Christian Böhm, Bernhard Braunmüller, Florian Krebs, Hans-Peter Kriegel
2001 SIGMOD record  
In the experimental evaluation, a substantial improvement over competitive techniques is shown.  ...  In this paper, we propose the Epsilon Grid Order, a new algorithm for determining the similarity join of very large data sets.  ...  In contrast to approaches that use a directory structure such as the ε-kdB-tree [SSA 97] or the Multipage Index [BK 01] the EGO-join yields almost no space overhead for this separate optimization.  ... 
doi:10.1145/376284.375714 fatcat:vrjoho5oy5b3nkn43mg2yjcbpa

Comparing epidemiological models with the help of visualization dashboards

Csaba Farkas, David Iclanzan, Boróka Oltean-Péter, Géza Vekov
2020 Acta Universitatis Sapientiae: Informatica  
AbstractIn 2020, due to the COVID − 19 pandemic, various epidemiological models appeared in major studies [16, 22, 21], which differ in terms of complexity, type, etc.  ...  In accordance with the hypothesis, a complex model is more accurate and gives more reliable results than a simpler one because it takes into consideration more parameters.In this paper we study three different  ...  ., the SIR model does not even take into account the exposed proportion of the population. This dif-ference obviously comes up in the values and in the visualization as well.  ... 
doi:10.2478/ausi-2020-0016 fatcat:kqces5kqa5ffnjnnm2pqhi264i

Dynamic Information Retrieval

Marc Sloan, Jun Wang
2015 Proceedings of the 2015 International Conference on Theory of Information Retrieval - ICTIR '15  
We apply our framework to experiments over TREC data in the dynamic multi page search scenario as a practical demonstration of its effectiveness and to frame the discussion of its use, its limitations  ...  In this paper a new theoretical framework for retrieval in these scenarios is proposed.  ...  We see further evidence of this with the diversity metric scores in Table 3 , where it is clear that diversification is occurring in the first page and less so in the second.  ... 
doi:10.1145/2808194.2809457 dblp:conf/ictir/SloanW15 fatcat:f4qkrc6cefdl5ereuzt6ryehae

OCD: An Optimized and Canonical Document Format

Jean-Luc Bloechle, Denis Lalanne, Rolf Ingold
2009 2009 10th International Conference on Document Analysis and Recognition  
In this paper, we present OCD, an optimized, easy-to-process and canonical format for representing structured electronic documents.  ...  As images in OCD are encoded using PNG and JPEG 2000, newspaper file size compactness is less relevant.  ...  Positions are then computed for each character glyph thanks to the current text state: character space (cs), token space (ts) and white space (ws) are combined with the character width (available in the  ... 
doi:10.1109/icdar.2009.159 dblp:conf/icdar/BloechleLI09 fatcat:cfrnrvlk5bdchdf7jpiskkekza

USE OF A MULTISPECTRAL UAV PHOTOGRAMMETRY FOR DETECTION AND TRACKING OF FOREST DISTURBANCE DYNAMICS

R. Minařík, J. Langhammer
2016 The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences  
The imagery of high spatial and spectral resolution enabled to analyse the inner structure and dynamics of the processes.  ...  The study area is located in the Sumava Mountains, Central Europe, heavily affected by windstorms, followed by extensive and repeated bark beetle (Ips typographus [L.]) outbreaks in the past 20 years.  ...  dynamics in space and time.  ... 
doi:10.5194/isprs-archives-xli-b8-711-2016 fatcat:5pzwp6ogqjbz3lwwlfmmthvxoe
« Previous Showing results 1 — 15 out of 239 results