National Bureau of Economic Research (NBER)
Gráinne Gilmore, Andrew Robson, Debbie Ogden, Simon Barnes Chief Sports Writer, Charles Scanlan, Andrew Billen, David Brown, Patrick Hosking Banking & Finance Editor, Mark White, Frances Gibb Legal Editor, Amanda Ursell, Simon Barnes, Peter Lansley, Mark Souster, David Rose, Philip Howard, Carol Midgley, Jonny Wilkinson, David Lister Scotland Correspondent, David Chater, Dan Watkins, James Bone, James Ducker, Jill Finney, Richard Hobson One-Day Cricket Correspondent, Elizabeth Judge, David Charter Europe Correspondent, Sam Marlowe, Chris Monk, Martin Samuel Chief Football Correspondent, Joe Joseph, Robin Pagnamenta, Martin Fletcher, Sathnam Sanghera, Edna S. Weiss, Valerie Elliott Countryside Editor, John B. Merritt, Pat Gibson, Frieda Hughes, Jane MacArtney, Donald Hutera, Siobhan Kennedy, David Byers, John Wardle, Steve Bird, Rory Watson, Phil Webster, Norman Hammond Archeology Correspondent, Peter Croggon, David Sharrock Ireland Correspondent, Ed Hancox, Jenny MacArthur, Scott Watson, Anatole Kaletsky, Julian Thomas, Sadie Gray, Hugh Peskett Editor in Chief, Ron Lewis, Guillem Balague, Norman Hammond Archaeology Correspondent, Lisa Armstrong Fashion Editor, Greg Hurst, Edward Gorman, Derwent May, Sir Clive Woodward, Russell Kempson, Suzy Jagger, Gary Duncan Economics Editor, Oliver Kay, Lisa Armstrong, Neil Harman, John Westerby, James Harding Business Editor, Bertie Peek, John Hopkins, Andrew Chant, Ann Treneman, Professor David Eastwood Chief Executive, Rob Wright, Edward Gorman Motor Racing Correspondent, Natalie Haynes, Martin Samuel, Raymond Keene, Matthew Pryor, Matt Hughes, Sarah Birke, Andreas Bitterer, Dr Tanya Byron, Kaveh Solhekol, Andrew Drummond, Neville Scott, Chris Campling, Patrick Hosking, Helen Nugent, Marcus Leroux, John Carr, Adam Wentworth, Robin Gibbons, James Charles, Peter Dixon, David Hands Rugby Correspondent, Owen Slot Chief Sports Reporter, Tony Cascarino, Julian Muscat, Paul Simons, William Rees-Mogg, Gerard Baker US Editor, Nick Szczepanik, Tim Hames, Nigel Henderson, Anjana Ahuja, Mark Goyder, Founder Director, Desmond Whittall, Caitlin Moran, Walter Gammie, Peter Riddell, Jeremy Hart, David Sinclair, Lisa Verrico, Mark Baldwin, Nigel Hawkes Health Editor, Benedict Nightingale, Alex Horne, Mark Twain, Sam Coates Political Correspondent, Stephen Dalton, Richard Morrison, Dr Mike Storey, Bill Edgar, Tony Halpin, Alyson Rudd, Alan Lee Racing Correspondent, Rachel Cramond, Olav Bjortomt, Robert Randell, Leonora Weil, Fiona Hamilton, Duncan Anderson, Nicola Copping, Ross Anderson, Joe Bolger, Christopher Irvine, Stephen Pollard,
... This is one of the findings of the OLAP Report (www. olapreport. com/Performance. htm) Absolutely fantastic! ...
2007 - Gale Group | TDA
Chen Chen, Xifeng Yan, Feida Zhu, Jiawei Han, Philip S. Yu,
... systems to handle graph structured data? In particular, OLAP (On-Line Analytical Processing) has been a popular ... multi-dimensional analysis of data warehouses. Can we OLAP graphs? Unfortunately, to our best knowledge, there are no OLAP tools available that can interactively view and analyze ... we argue that it is critically important to OLAP graph structured data and propose a novel Graph OLAP framework. According to this framework, given a graph ... what are dimensions and measures in the Graph OLAP scenario, we develop a conceptual framework for data ...
Tópico(s): Data Management and Algorithms
2009 - Springer Science+Business Media | Knowledge and Information Systems
Selwyn Hodson Pressinger, John Dugdale, Sebastian Hamilton Westminster Correspondent, Roy Ward, Christopher Middleton, Saffron Aldrige, Barbara Hall, Judith O'Reilly Education Correspondent, Michael Ashworth, Andrew Grlce, Tam Dalyell Mp, John Crawley, Jim Munro, Jon Swain, Greg Williams, Nicholas Rufford, John Peter, David Clementi's, Walter F Stowy, Emma Moore, Amanda Ursell, Jonathan Miller, Lesley White, John Jay, Dr Charles, Eamonn Allen, Claire Struthers, Raymond Franks, A Vest, Ivo Tennant, William Wilson, Sandra Hawke, B W, Alistair Scott, Addison de Witt, Hazel Courteney Health Journalist of the Year, J P, Paul Myatt, Lucy Hughes-Hallett, Kirstie Hamilton City Editor, Neil Wormald, Andrew Sullivan, Pearl Abraham, Mary Wilson, Aoife O'Brien, Mrs M Wrigg, Andrew Grice Political Editor, Jeffrey Archer, Richard Slobodin, Tony Allen-Mills, Isabella Blow, Martin James, Anthony Sattin, Robert Winnett, Irwin Stelzer, Robert Hewison, Peter Wilson, Roger Anderson, Marian Phillips, David Dougill, Matthew Marr, Robert Johnson, Donald Artrim, Peter Jones, David Hewson, E Smith, Tom Cruise, Tania Alexander, Harvey Porlock, Yvonne Ridley, Margaret Coles, Margarette Driscoll, Alasdair Reid, Debble Hill, Hugh Canning, Jeremy Clarkson, ken Russell, Edward Porter, Peter Conradi, Jerry Lloyd, Louise Taylor, Mrs J Sutton, Michael Jones, Peter Millar, David Dabydeen, Duncan Keegan, Dr Michael Sanderson, Peter Hadfield, Joan Smith, George Perry, Kevin Connolly, Graham Otway, John Primeau, Nick Gardner, Shelley von Strunckel, Jeremy Taylor, Paul Nuki Consumer Affairs Correspondent, Rob Steen, Geoffrey Dicks, Alexander Korzhakov, Naoml Calne, Jon Freeman, Paul Ham, Ian MacKinnon, Dennis L Bird, Michael Travis, Guy Richards, Jack Millan, Jonathan Leake Transport Correspondent, Elizabeth Gaskell, Paul Donovan, Ron Brown, Christopher trussler, Eric Lyman, Jeff Randall, Smita Talati, Paul Driver, Cosmo landesman, Mwanyengela Ngali, Ian Hawkey, Ian Chadband, David Leppard, Richard Girling, Kirstie Hamilton, Tom Shone, Stephen Amidon, Mark Austin, David Lawrenson, Nicholas Rufford Home Affairs Editor, Justin Onyeka, Naomi Calne, Lord Simon, Andy Goldberg, David Hurst, Helen Fielding, Christina Lamb, Katharine Klein, Anna Pasternak, Sean Newsom, Bob Graham, Sue Reid, Raymond Keene, Brian Masters, Anne Tyler, Peter Gordon, Zoe Brennan, Andrew Roberts, Marie Colvin, Diana Wright, Helen Hawkins, Rebecca Tanqueray, Frank Kane, Uzi Mahnaimi, Michael Wright, Andrew Smith, Paul Nuki, Tim Moorey, Andrew Grice, Steve Connor Science Correspondent, Martin Searby, Adam Pearsons, Keith Wheatley, David Walsh, Henry Roth, Rasselas, Bryan Appleyard, Stephen McGinty, Ann Swinfen, Valerie Sleith, Mr J Riddings, Josh Salzmann, Mark Prigg, Garth Alexander, Rachel Cooke, Maurice Chittenden, Alex Fortune, Andrew Lorenz Business Editor, Mark Franchetti, Graham Gooch, Ray Hutton, John burnside, Susan Elkin, Jonathan Leake, Catharine Straker, Leah Hardy, Sean Hargrave, Margaret Walters, Bruce Anderson, John Harlow, Simon Callow, Matthew Lynn, Kofi Allen, Quentin Blake, D L, John Waples, Rupert Stelner, A A Gill, Paul Barker, Lord Brocket, Richard E Grant, Ernest Smith, David Hutcheon, Rajeev Syal, Nadine Meisner, Caroline Law, Lauren St John, Stephen Pettitt, Howard Jacobson, Cherry Norton, John Spurling, Roger Brandon, Andrew Lorenz, David Foster, Liam Clarke, David Wickers, Roger Dobson, Lord Wakeham, Tim Roth, Matthew Loup, Arthur Miller, Mark Hodson, Francesco Sisci, Nicholas Hellen Media Correspondent, Steve Connor, Joe Lovejoy, Neil Chapman, Charles Kingsley, Rupert Steiner, Seamus Deane, Chris Lightbown, Alberto Manguel, R Brian, Frank Whiteford, Philip Berry, Derek Draper, Simon Trump, Harry Thompson, Anthony Howard, Simon Sebag, Judith O'Relly Education Correspondent, Claire Middleton, Zoe Linkson, Polly Walshe, Joanna Simon, India Knight, Maureen Keywood, Mandy Piggot, Dan Pearson, William Essex, Stephen Hayward, Boris Schapiro, Adam Parsons,
... Group Arity Perkins Harvey Nash Revolutionary new Rapid-OLAP technology Herst Austin Rowley KPMG means business Coopers & ...
1997 - Gale Group | Sunday Times HA GDA
Dennis Pedersen, Karsten Riis, Torben Bach Pedersen,
... dynamic businesses are not handled well by current OLAP systems. Physical integration of data into OLAP systems is a time-consuming process, making logical ... be available in XML format. Thus, federations of OLAP and XML databases will be very attractive in many situations. In an efficient implementation of OLAP-XML federations, cost-based optimization is a must, ... a need for an effective cost model for OLAP-XML federations.In this paper we present a cost model for OLAP-XML federations, and outline techniques for estimating the ...
Tópico(s): Semantic Web and Ontologies
2002 - Springer Science+Business Media | Lecture notes in computer science
David C. A. Allberry, Tunku Varadarajan, Jon Ashworth, Noreen Taylor, Barney Spender, Edward Gorman, Sailing Correspondent, Nick Nuttall, Gwyn Hughes Clark, Zahid Hussain, Rob Hughes, Michael Ranken Secretary, Emma Levine, Magnus Linklater, Richard Hobson, Harvey Elliott, Robert Miller, Banking Correspondent, Gavin Lumsden, Philip Howard, Hilary Finch, Ian Murray, D. E. A. Michael, Clive Davis, Kathryn Knight and Rory Carroll, Philip Warner, Peter Foster, Nick Nuttall, Environment Correspondent, Gillian Maxey, Simon Wilde, Christine Buckley Industrial Correspondent, Geoff Brown, Robert Sheehan, Bridge Correspondent, Joe Joseph, Rory Carroll, John Clarke, John Bryant, Emma Rolph, Damian Samuels, Tim Thornton and Leslie Isaiah Thomas, Rupert Cox, David Charter Education Correspondent, Catherine Chetwynd, Pugh & Way, Norman Hammond, Archaeology Correspondent, Dominic Walsh, Giles Whittell and our Foreign Staff, Robert Ballard, Jim McCue, Raymond Keene Chess Correspondent, Bronwen Maddox and Ross Dunn, Craig Sams (Chairman), Audrey Magee, Correspondent, Lawrence James, Ruth Gledhill Religion Correspondent, Dalya Alberge Arts Correspondent, Peter Waymark, Richard Ford Home Correspondent, Robin Young, Daniel Johnson, Jenny MacArthur, Robert Bruce, Michael Clark, Andrew Pierce Political Correspondent and Valerie Elliot, Michael Clark Stock Market Correspondent, Peter Barnard, David Charter, Michael Binyon Diplomatic Editor, Robin Hutchings, Fiona Pitt-Kethley, Roger Scruton, Russell Kempson, Paul Durman, Ian Fletcher, Andrea Marcovicci, Martin Fletcher, Chief Ireland Correspondent, Gillian Bowditch, Barry Millington, John Higgins, Jack Burrows, R. K. Day, Raymond Keene, Alan Lee, Cricket Correspondent, R. P. Voelcker, Paul Wilkinson, P. H. S, Nigel Hawkes, Caroline Merrell, Bronwen Maddox, David Powell, Athletics Correspondent, John Carr, Roger Boyes, Sarah Cunningham, Oliver August, Wilf Altman, Stewart Tendler, A. D. Harris, Fiona Chapman, W. Stephen Gilbert, Julian Muscat, R. W. Johnson, Richard Duce, Christopher Thomas, William Rees-Mogg, Tony Goldman, Jack Crossley, David Churchill, Nick Nuttall, Technology Correspondent, Frank Johnson, Editor, Paul Wilkinson and Kathryn Knight, Alex O'Connell, Jason Nissé, Des Dearlove, Kathryn Knight, Philip Davies, Richard Evans Racing Correspondent, Michael Austin, Ben MacIntyre, Ian Brodie, Michael Gove, Alan Lee Cricket Correspondent, Graham Searjeant, Fraser Nelson, Benedict Nightingale, Linsey McNeill, Dr Thomas Stuttaford, Michael Henderson, Lord Young, M. Louise Pirouet (Co-ordinator), Susan MacDonald, Nigel Vinson, Harvey Elliott Air Correspondent, Barbara S. Young, Chief Executive, Ian Whittell and Russell Kempson, Richard Ford, Tom Bower,
... Professional Alliances of Career Consultants Revolutionary new Rapid OLAP technology PA Consulting Group Recent Appointments Picture Gallery ...
1997 - Gale Group | TDA
Torben Bach Pedersen, Junmin Gu, Arie Shoshani, Christian S. Jensen,
On-line analytical processing (OLAP) systems based on a dimensional view of data have found widespread use in business applications and are being used increasingly ... non-standard applications are not accommodated well by OLAP systems. In contrast, object database systems are built to handle such complexity, but do not support OLAP-type querying well. This paper presents the concepts ... a flexible, “multi-model” federated system that enables OLAP users to exploit simultaneously the features of OLAP and object systems. The system allows data to ...
Tópico(s): Data Management and Algorithms
2008 - Elsevier BV | Data & Knowledge Engineering
On-Line Analytical Processing (OLAP) is a trend in database technology, based on the multidimensional view of data. Numerous applications and development environments exist, offering OLAP analysis to developers, analysts and end users. Further ... professional PDA's used for numerous wireless applications – OLAP included – and thus generating the need for convergence ... In this paper we introduce the term Mobile OLAP to express the porting of requirements and specifications for OLAP applications into the wireless and mobile computing world. ...
Tópico(s): Peer-to-Peer Network Technologies
2004 - Springer Science+Business Media | Lecture notes in computer science
F. Dehne, Quan Kong, Andrew Rau‐Chaplin, H. Zaboli, Rui Zhou,
... access only a small portion of a database, OLAP queries may need to aggregate large portions of ... performance issues. In this paper we introduce CR-OLAP, a scalable Cloud based Real-time OLAP system based on a new distributed index structure for OLAP, the distributed PDCR tree. CR-OLAP utilizes a scalable cloud infrastructure consisting of multiple ... processors). That is, with increasing database size, CR-OLAP dynamically increases the number of processors to maintain ... elaborate dimension hierarchies which are so central to OLAP systems. It is particularly efficient for complex OLAP ...
Tópico(s): Advanced Data Storage Technologies
2014 - Elsevier BV | Journal of Parallel and Distributed Computing
Joyce F. Liu, William T. Barry, Michael J. Birrer, Jung Min Lee, Ronald J. Buckanovich, Gini F. Fleming, B.J. Rimel, Mary K. Buss, Sreenivasa Nattam, Jean Hurteau, Weixiu Luo, Philippa Quy, Elizabeth Obermayer, Christin Whalen, Hang Lee, Eric P. Winer, Elise C. Kohn, S. Percy Ivy, Ursula A. Matulonis,
... that the combination of cediranib (ced) and olaparib (olap) is well-tolerated. We therefore compared the activity of olap alone (Olap) to combined ced and olap (Ced/Olap) in treatment of recurrent platinum-sensitive (plat-sens) ... in this Ph 2 open label study to Olap (olap 400 mg capsules BID) or Ced/Olap (olap 200 mg capsules BID; ced 30 mg daily), ... from Oct 2011 to Jun 2013: 46 to Olap, 44 to Ced/Olap. 48 pts were known ...
Tópico(s): BRCA gene mutations in cancer
2014 - Lippincott Williams & Wilkins | Journal of Clinical Oncology
Joyce F. Liu, William T. Barry, Michael J. Birrer, Jung Min Lee, Ronald J. Buckanovich, Gini F. Fleming, B.J. Rimel, Mary K. Buss, Sreenivasa Nattam, Jean Hurteau, Weixiu Luo, Philippa Quy, Elizabeth Obermayer, Christin Whalen, Hang Lee, Eric P. Winer, Elise C. Kohn, S. Percy Ivy, Ursula A. Matulonis,
... that the combination of cediranib (ced) and olaparib (olap) is well-tolerated. We therefore compared the activity of olap alone (Olap) to combined ced and olap (Ced/Olap) in treatment of recurrent platinum-sensitive (plat-sens) ... in this Ph 2 open label study to Olap (olap 400 mg capsules BID) or Ced/Olap (olap 200 mg capsules BID; ced 30 mg daily), ... from Oct 2011 to Jun 2013: 46 to Olap, 44 to Ced/Olap. 48 pts were known ...
Tópico(s): BRCA gene mutations in cancer
2014 - Lippincott Williams & Wilkins | Journal of Clinical Oncology
Lucile Sautot, Bruno Faivre, Ludovic Journaux, Paul Molin,
The OLAP systems can be an improvement for ecological studies. In fact, ecology studies, follows and analyzes phenomenon across space and time and according to several parameters. OLAP systems can provide to ecologists browsing in a ... dataset. One focus of the current research on OLAP system is the automatic design of OLAP cubes and of data warehouse schemas. This kind of works makes accessible OLAP technology to non information technology experts. But to be efficient, the automatic OLAP building must take into account various cases. Moreover ...
Tópico(s): Data Management and Algorithms
2014 - Elsevier BV | Ecological Informatics
Christoph Heesen, Wolfgang Gaissmaier, Franziska Nguyen, Jan‐Patrick Stellmann, Jürgen Kasper, Sascha Köpke, Christian Lederer, Anneke Neuhaus, Martin Däumer,
... estimates can be improved. An online analytical processing (OLAP) tool based on pooled data from placebo cohorts ... if personalized prognostic information as presented by the OLAP tool is considered useful and meaningful by patients. Furthermore, we used the OLAP tool to evaluate patients' and physicians' risk estimates. ... 6) and compared them with the estimates of OLAP. Results Patients rated the OLAP tool as understandable and acceptable, but to be ... It turned out that patients, physicians, and the OLAP tool ranked patients similarly regarding their risk of ...
Tópico(s): SARS-CoV-2 and COVID-19 Research
2013 - Public Library of Science | PLoS ONE
Nur Ardista, Purbandini Purbandini, Taufik Taufik,
... analisis multidimensional. Data warehouse berbasis Online Analytical Processing (OLAP) dapat diterapkan untuk menangani masalah tersebut. Tujuan penelitian ini adalah merancang dan membangun data warehouse berbasis OLAP agar dapat digunakan oleh bagian rekam medis RSUA ... desain, proses ETL (Extraction, Transformation, and Loading), penerapan OLAP, uji coba, eksplorasi untuk hasil laporan dan analisis, ... constellation schema. Hasil implementasi data warehouse adalah aplikasi OLAP yang dapat digunakan untuk membantu kinerja bagian rekam ...
Tópico(s): Data Quality and Management
2017 - Airlangga University | Journal of Information Systems Engineering and Business Intelligence
Joyce F. Liu, William T. Barry, Michael J. Birrer, Jung‐Min Lee, Ronald J. Buckanovich, Gini F. Fleming, B.J. Rimel, Mary K. Buss, Sreenivasa Nattam, Jean Hurteau, Weixiu Luo, Sarah Farooq, Christin Whalen, Elise C. Kohn, S. Percy Ivy, Ursula A. Matulonis,
... that the combination of cediranib (ced) and olaparib (olap) improved progression-free survival (PFS) and overall response ... in this Ph 2 open label study to Olap (olap 400 mg capsules BID) or Ced/Olap (olap 200 mg capsules BID; ced 30 mg daily), ... from Oct 2011 to Jun 2013: 46 to Olap, 44 to Ced/Olap. 48 pts were known BRCA carriers (25 Olap; 23 Ced/Olap). As of Dec 21, 2016, 67 pts had ... Updated median PFS was 8.2 mos for Olap and 16.5 mos for Ced/Olap (HR ...
Tópico(s): BRCA gene mutations in cancer
2017 - Lippincott Williams & Wilkins | Journal of Clinical Oncology
Leticia Ruiz Gómez, Bart Kuijpers, Alejandro Vaisman,
Online Analytical Processing (OLAP) comprises tools and algorithms that allow querying multidimensional databases. It is based on the multidimensional model, where data can ... Big Data" s cenario, traditional data warehousing and OLAP operations are clearly not sufficient to address current ... analysis requirements, for example, social network analysis. Furthermore, OLAP operations and models can expand the possibilities of ... not much work on the problem of taking OLAP analysis to the graph data model. This paper ...
Tópico(s): Graph Theory and Algorithms
2020 - IOS Press | Intelligent Data Analysis
Ilko Kovacic, Christoph G. Schuetz, Bernd Neumayr, Michael Schrefl,
... an approach referred to as online analytical processing (OLAP) to view multidimensional data from different perspectives. Query ... to using a query language, e.g., graphical OLAP clients, parameterized reports, or dashboards, are often not ... to the following observations regarding the use of OLAP queries in practice. First, within the same organization, similar OLAP queries are repeatedly composed from scratch in order ... needs. Second, across different organizations and even domains, OLAP queries with similar structures are repeatedly composed from ...
Tópico(s): Data Management and Algorithms
2021 - Elsevier BV | Data & Knowledge Engineering
Fadila Bentayeb, Cécile Favre,
... levels of detail with On-Line Analytical Processing (OLAP) operators such as drill-down and roll-up. ... we propose to integrate personalization techniques within the OLAP process. We propose two kinds of OLAP personalization in the data warehouse: (1) adaptation and ( ... into the data warehouse schema. For recommending new OLAP queries, we provide a new OLAP operator based on the K-means method. Users ... aggregates semantically richer than those provided by classical OLAP operators. In both adaptation and recommendation techniques, the ...
Tópico(s): Semantic Web and Ontologies
2009 - Springer Science+Business Media | Lecture notes in computer science
... an advanced method for on-demand construction of OLAP cubes for ROLAP systems. The method contains the ... done using the tools and methods of the OLAP software at hand. The method is based on ... as a basis for designing and creating the OLAP schema, its corresponding database tables, and finally populating ... sources that are eventually used to populate the OLAP cubes. Mapping between the source data and its OLAP form is done by converting the data first ... that are generated using the ontology of the OLAP schema. Finally, the extracted data are stored in ...
Tópico(s): Data Management and Algorithms
2009 - Springer Science+Business Media | Lecture notes in computer science
Lorena Etcheverry, Alejandro Vaisman,
On-Line Analytical Processing (OLAP) tools allow querying large multidimensional (MD) databases called data warehouses (DW). OLAP-style data analysis over the semantic web (SW) ... the definition of a vocabulary that adequately represents OLAP data is required. Unfortunately, so far, the proposals ... analyzing statistical data, but does not adequately support OLAP multidimensional data. Another recent proposal, the Open Cube ... OC) follows closely the classic MD models for OLAP and allows implementing OLAP operators as SPARQL queries, ...
Tópico(s): Data Management and Algorithms
2012 - Samara National Research University | CEUR Workshop Proceedings
Carlos Blanco, Ignacio García Rodriguez de Guzmán, Eduardo Fernández‐Medina, Juan Trujillo,
... using tools (such as On-Line Analytical Processing (OLAP) tools) which use specific views or cubes from ... layer that connects the DWs repository with the OLAP tools, that is, over the same multidimensional structures ... This paper defines a proposal to develop secure OLAP applications and incorporates it into our previous approach. ... capabilities from UML (conceptual model) and extending the OLAP package of CWM with security (logical model). Transformations ... studies. A complete MDA architecture for developing secure OLAP applications. The main contributions of this paper are: ...
Tópico(s): Access Control and Trust
2014 - Elsevier BV | Information and Software Technology
Juchang Lee, Seunghyun Moon, Kyu Hwan Kim, Deok Hoe Kim, Sang Kyun, Wook-Shin Han,
... of efficiently supporting mixed workloads of OLTP and OLAP. A conventional approach to this requirement is to ... data replication between two very different OLTP and OLAP systems, sacrificing real-time reporting on operational data. An alternative approach is to run OLTP and OLAP workloads in a single machine, which eventually limits the maximum scalability of OLAP query performance. In order to tackle this challenging ... in one primary machine, while it supports heavy OLAP workloads in replicas. Here, row-store formats can ...
Tópico(s): Advanced Data Storage Technologies
2017 - Association for Computing Machinery | Proceedings of the VLDB Endowment
Yansong Zhang, Yu Zhang, Shan Wang, Jiaheng Lu,
OLAP models can be categorized with two types: MOLAP (multidimensional OLAP) and ROLAP (relational OLAP). In particular, MOLAP is efficient in multidimensional computing ... In this paper, we propose a novel Fusion OLAP model to fuse the multidimensional computing model and ... enable multidimensional computing on relation tables. The Fusion OLAP model can be integrated into the state-of- ... indexes and vector indexes. We compared the Fusion OLAP implementations with three leading analytical in-memory databases. ...
Tópico(s): Advanced Database Systems and Queries
2018 - IEEE Computer Society | IEEE Transactions on Knowledge and Data Engineering
Salman Ahmed Shaikh, Hiroyuki Kitagawa,
... interactive analyses across several dimensions. Online analytical processing (OLAP) is a technique whose utility has been proven for such an analysis. Traditionally, OLAP over streams has been achieved by coupling a stream processing engine (SPE) with an OLAP engine. However, for many organizations, this is not ... is a unified framework for stream processing and OLAP analysis. The idea of a unified framework is ... and the maintenance of the materialized view of OLAP have many similarities. To seamlessly integrate the SPE ...
Tópico(s): Data Management and Algorithms
2020 - Institute of Electrical and Electronics Engineers | IEEE Access
Hans-Joachim Lenz, Bernhard Thalheim,
OLAP applications are widely used in business applications. They are often (implicitly) defined on top of OLTP ... extensively use aggregation and transformation functions. The main OLAP data structure is a multidimensional table with three ... this paper we systematically develop a theory for OLAP applications. We first define aggregation functions and use these to introduce an OLAP algebra. Based on these foundations we derive properties that guarantee or contradict correctness of OLAP computations. Finally, for pragmatical treatment of OLAP applications ...
Tópico(s): Service-Oriented Architecture and Web Services
2009 - Verlag der Technischen Universität Graz | JUCS - Journal of Universal Computer Science
Matthew Scotch, Bambang Parmanto, Valerie Monaco,
... its traditional database architecture. On-Line Analytical Processing (OLAP) is a multidimensional datawarehouse designed to facilitate querying ... capabilities of GIS with the numerical analysis of OLAP, might enhance CHA data analysis. OLAP-GIS systems have been developed by university researchers ... well understood. To evaluate the potential of an OLAP-GIS decision support system for CHA problem solving, we compared OLAP-GIS to the standard information technology (IT) currently used by many public health professionals. SOVAT, an OLAP-GIS decision support system developed at the University ...
Tópico(s): Geographic Information Systems Studies
2008 - BioMed Central | BMC Medical Informatics and Decision Making
Eduardo Fernández‐Medina, Jan Jürjens, Juan Trujillo, Sushil Jajodia,
... using tools (such as On-Line Analytical Processing (OLAP) tools) which use specific views or cubes from ... layer that connects the DWs repository with the OLAP tools, that is, over the same multidimensional structures ... This paper defines a proposal to develop secure OLAP applications and incorporates it into our previous approach. ... capabilities from UML (conceptual model) and extending the OLAP package of CWM with security (logical model). Transformations ... studies.A complete MDA architecture for developing secure OLAP applications. The main contributions of this paper are: ...
Tópico(s): Service-Oriented Architecture and Web Services
2008 - Elsevier BV | Information and Software Technology
Alfredo Cuzzocrea, Vincenzo Russo, Domenico Saccà,
A robust sampling-based framework for privacy preserving OLAP is introduced and experimentally assessed in this paper. ... proposed framework consists in adopting an innovative privacy OLAP notion, which deals with the problem of preserving the privacy of OLAP aggregations rather than the one of data cube cells, like in conventional perturbation-based privacy preserving OLAP techniques. This results in a greater theoretical soundness, ... cubes. Also, the performance of our privacy preserving OLAP technique is compared with the one of the ...
Tópico(s): Internet Traffic Analysis and Secure E-voting
2008 - Springer Science+Business Media | Lecture notes in computer science
Muhammad Usman, Sohail Asghar, Simon Fong,
OLAP performance and its data visualization can be improved using different types of enhancement techniques. Previous research has taken two separate directions in OLAP performance improvement and visualization enhancement respectively. Some recent works have shown the benefits of combining OLAP and Data Mining. Our previous work presents an architecture for the enhancement of OLAP functionality by integrating OLAP and Data Mining. In this paper, we proposed ... capability can be improved remarkably. By integrating enhanced OLAP with data mining system a higher degree of ...
Tópico(s): Software System Performance and Reliability
2010 - | Journal of Advances in Information Technology
OnLine Analytical Processing (OLAP) is relevant for a plethora of Intelligent Data Analysis and Mining Applications and Systems, as it offers powerful tools ... resolution metaphors over data. Applicative settings for which OLAP plays a critical role are manyfold, and span ... Warehousing research community has experienced an explosion of OLAP-related methodologies and techniques aimed at improving the ... well-understood limitations of state-of-the-art OLAP data processing techniques in elaborating, querying and mining ...
Tópico(s): Advanced Data Storage Technologies
2010 - Springer Science+Business Media | Lecture notes in computer science