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Reducing Multidimensional Data [chapter]

Faten Atigui, Franck Ravat, Jiefu Song, Gilles Zurfluh
2014 Lecture Notes in Computer Science  
Firstly, we describe a multidimensional database schema composed of a set of states. Each state is defined as a star schema composed of one fact and its related dimensions.  ...  Our aim is to elaborate a multidimensional database reduction process which will specify aggregated schema applicable over a period of time as well as retains useful data for decision support.  ...  The first type of MDW corresponds to databases without reduction.  ... 
doi:10.1007/978-3-319-10160-6_19 fatcat:ob5s4yzdhnbfhoqo4uwkjeomze

Spend analysis systems

S. Marzic, P. Krneta, M. Pavlic
2014 2014 37th International Convention on Information and Communication Technology, Electronics and Microelectronics (MIPRO)  
We present flowchart of spend analysis process in form of a dataflow diagram.  ...  We present main issues in development of a spend analysis software, and give an overview of current spend analysis systems. I.  ...  Defining and maintenance of hierarchies and dimensions -hierarchical schemes of products and services, supplier hierarchy, cost centers database are under continuous development so there must be one or  ... 
doi:10.1109/mipro.2014.6859803 dblp:conf/mipro/MarzicKP14 fatcat:6oajcgctvjantjpoqb67ag3ary

Frameworks for generalization constraints and operations based on object-oriented data structure in database generalization

Liu Yaolin, Martien Molenaar, Al Tinghua, LIU Yanfang
2001 Geo-spatial Information Science  
The operations perform the actions of generalization in support of data reduction in the database.  ...  hierarchy) associated with the final the existing database.  ...  Acknowledge Research work was supported by International Institute for Aerospace Survey and Earth Science, Ministry of Education PR.China and National Bureau of Surveying and Mapping.  ... 
doi:10.1007/bf02826923 fatcat:hw2attgtkzbehpyxdq4vsbh5c4

On inference control in semantic data models for statistical databases

Gultekin Ozsoyoglu, Tzong-An Su
1990 Journal of computer and system sciences (Print)  
due to structural, dynamic and pre-knowledge inferences in the generalization hierarchy of the D-A model.  ...  A statistical database (SDB) is a database that is used to provide simple summary statistics about populations stored in the database and that supports statistical data analysis.  ...  ACKNOWLEDGMENT We would like to thank the referee for carefully reading the earlier version of this paper and for helpful comments.  ... 
doi:10.1016/0022-0000(90)90005-6 fatcat:oxatujxhtjagjimidpykukmrlq

Analysis of affinity based routing in multi-system data sharing

Philip S. Yu, Douglas W. Cornell, Daniel M. Dias, Balakrishna R. Iyer
1987 Performance evaluation (Print)  
Further, the reduction in inter-system data contenlion, produces a large hnpact on the performance of optimislic type concurrency control.  ...  and leads to a substantial reduction in transaction response time.  ...  IMS uses two hierarchies. The lop level of the hierarchy uses locks on hash classes and the next hierarchy uses the record, block or data set locks.  ... 
doi:10.1016/0166-5316(87)90025-3 fatcat:6coz6livjjgdxf6d5y4wrnuswm

Counting Database Repairs under Primary Keys Revisited

Marco Calautti, Marco Console, Andreas Pieris
2019 Proceedings of the 38th ACM SIGMOD-SIGACT-SIGAI Symposium on Principles of Database Systems - PODS '19  
Ideally, we would like to show that such a problem is complete for a subclass of #P under many-one logspace reductions.  ...  Consistent query answering (CQA) aims to deliver meaningful answers when queries are evaluated over inconsistent databases.  ...  As stated in [10] , Cook reductions blur structural differences between counting problems and complexity classes.  ... 
doi:10.1145/3294052.3319703 dblp:conf/pods/CalauttiCP19 fatcat:up77dpnivvbu7pzjxviwgz5tym

Query Optimisation in Distributed Object-Oriented Database Systems

W. Sun, W. Meng, C. Yu
1992 Computer journal  
These issues include sorted states of classes; local processing of selections and projections, allowing multiple intermediate results; arbitrary target class at an arbitrary answer site; replicated data  ...  The processing and optimisation of typical queries, called chain queries, in distributed object-oriented database systems are investigated in detail.  ...  Acknowledgement We are very grateful to Dr Won Kim of MCC for his comments on an earlier draft of this paper. We should also like to thank anonymous referees for constructive comments.  ... 
doi:10.1093/comjnl/35.2.98 fatcat:cjtjbkmgqnf23e3ylnt7e3kvgq

Hardware/software co-synthesis with memory hierarchies

Yanbing Li, W.H. Wolf
1999 IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems  
This paper introduces the first hardware/software cosynthesis algorithm of distributed real-time systems that optimizes memory hierarchy along with the rest of the architecture.  ...  Our algorithm chooses cache sizes and allocates tasks to caches as part of co-synthesis.  ...  The authors would like to thank Zhao Wu of Princeton University for his constructive comments on drafts of the paper.  ... 
doi:10.1109/43.790618 fatcat:7kbvxz5hrvhxzduyxju2lwfhdq

Hardware/Software Co-Synthesis with Memory Hierarchies Manuscript received October 1, 1998; revised February 24, 1999. This work was supported by grants from the National Science Foundation. A preliminary version of this work appeared in the Proceedings of International Conference on Computer-Aided Design, November 1998. This paper was recommended by Associate Editor R. Gupta. Publisher Item Identifier S 0278-0070(99)07722-2 [chapter]

Yanbing Li, Wayne H. Wolf
2002 Readings in Hardware/Software Co-Design  
This paper introduces the first hardware/software cosynthesis algorithm of distributed real-time systems that optimizes memory hierarchy along with the rest of the architecture.  ...  Our algorithm chooses cache sizes and allocates tasks to caches as part of co-synthesis.  ...  The authors would like to thank Zhao Wu of Princeton University for his constructive comments on drafts of the paper.  ... 
doi:10.1016/b978-155860702-6/50023-5 fatcat:ucwofj2ixjaa7ljvomwrof4twu

Hardware/software co-synthesis with memory hierarchies

Yanbing Li, Wayne Wolf
1998 Proceedings of the 1998 IEEE/ACM international conference on Computer-aided design - ICCAD '98  
This paper introduces the first hardware/software cosynthesis algorithm of distributed real-time systems that optimizes memory hierarchy along with the rest of the architecture.  ...  Our algorithm chooses cache sizes and allocates tasks to caches as part of co-synthesis.  ...  The authors would like to thank Zhao Wu of Princeton University for his constructive comments on drafts of the paper.  ... 
doi:10.1145/288548.289066 dblp:conf/iccad/LiW98 fatcat:gjds2l2yvnbjxpe57glcmgkbku

Prevention and Reduction of Geological and Environmental Problems in the Iranian Cities by Development of Geoscientific Knowledge-Base and Cyber-Infrastructure in the Urban Scale

Mohsen Ehteshami-Moinabadi
2019 Current Trends in Civil & Structural Engineering  
are growing disciplines that provide essential knowledge for better understanding of geo environmental characteristics of urban areas in the large scales.  ...  This paper highlights major challenges of megacities in Iran that can be addressed by implementation of geoscientific cyber-infrastructure and knowledge-base.  ...  This paper is of first attempts to the state of art of previous works done by governmental organization of IR Iran on implementation of national databases and information system for geosciences.  ... 
doi:10.33552/ctcse.2019.02.000539 fatcat:hhm7nek3ivdnzjar7zvinkt6sq

APPLICATION OF RISK REDUCTION STRATEGIES IN THE CHEMICAL PROCESS INDUSTRY

N.E. Hussin, K. Kidam, Jihan J. Jalani, A. Johari, H. Hashim, Mimi H. Hassim
2015 Jurnal Teknologi  
The results of the accident analysis were discussed and then compared to previous analysis of the Failure Knowledge Database (FKD, Japan).  ...  In the paper, the issues and challenges of risk reduction strategies were discussed. A case study using accident cases, extracted from the U.S.  ...  Acknowledgement Special thanks to Zamalah Scholarship of UniversitiTeknologi Malaysia (UTM), Malaysia and Research University Grant (08H04) for funding this research.  ... 
doi:10.11113/jt.v75.5199 fatcat:d4hgcacv25a3bkbuwekoidnvva

Biochemical Space: A Framework for Systemic Annotation of Biological Models

M. Klement, T. Děd, D. Šafránek, J. Červený, S. Müller, R. Steuer
2014 Electronical Notes in Theoretical Computer Science  
In this tool paper, we target the problem of unique annotation of organism-specific computational models presented in a public model database.  ...  such as the presence of lumped model variables, combinatorial explosion in chemical modifications of entities, and hierarchical organisation of locations of individual entities.  ...  5 "h{+}::cyt" + "pq::cym" => "NADP{+}::cyt" + 4 "h{+}::pps" + "pqh2::cym" CLASSIFICATION: reduction-oxidation reaction MODIFIER: NDH1 DESCRIPTION: oxidation of NADPH and reduction of plastoquinone in  ... 
doi:10.1016/j.entcs.2014.06.013 fatcat:gzilhtsq3nbfdfw75obu4jog3i

Cost-optimal single-qubit gate synthesis in the Clifford hierarchy [article]

Gary J. Mooney, Charles D. Hill, Lloyd C. L. Hollenberg
2021 arXiv   pre-print
from higher orders of the Clifford hierarchy.  ...  Second, costs were assigned as the average numbers of raw (i.e. physical level) magic states required to directly distil and implement the gates fault-tolerantly.  ...  ACKNOWLEDGEMENTS This work was supported by the University of Melbourne through the establishment of an IBM Network Q Hub at the University.  ... 
arXiv:2005.05581v3 fatcat:tx2d2u4ek5cglpe2ixllbne5g4

Reducing metadata complexity for faster table summarization

K. Selçuk Candan, Mario Cataldi, Maria Luisa Sapino
2010 Proceedings of the 13th International Conference on Extending Database Technology - EDBT '10  
In this paper, we propose a tRedux algorithm for value hierarchy pre-processing and reduction.  ...  It has been shown that, when available, metadata, such as value hierarchies associated to the attributes of the tables, can help greatly reduce the resulting information loss.  ...  Based on these observations, we propose a novel hierarchy/taxonomy reduction method, tRedux, which reduces the complexities (defined in terms of the hierarchy height and density) of the given value hierarchies  ... 
doi:10.1145/1739041.1739072 dblp:conf/edbt/CandanCS10 fatcat:752ax5lizfdvni7izffou7uphm
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