About: A system recommending top-k objects for multiple users preferences

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	We discuss models of user preferences in Web environment. We construct a model for user preference querying over a number of data sources and ordering of answers by a combination of particular attribute rankings. We generalize Fagin’s algorithm in two directions - we develop some new heuristics for top-k search in the model without random access and propose a method of ordering lists of objects by user fuzzy function. To enable different user preferences our system does not require objects to be sorted - instead we use a B+- tree on each of the attribute domains. This leads to a more realistic model of Web services. We implement our methods and heuristics for search of top-k answers into Tokaf middleware framework prototype. We describe experiments with Tokaf and compare different performance measures with some other methods. We discuss models of user preferences in Web environment. We construct a model for user preference querying over a number of data sources and ordering of answers by a combination of particular attribute rankings. We generalize Fagin’s algorithm in two directions - we develop some new heuristics for top-k search in the model without random access and propose a method of ordering lists of objects by user fuzzy function. To enable different user preferences our system does not require objects to be sorted - instead we use a B+- tree on each of the attribute domains. This leads to a more realistic model of Web services. We implement our methods and heuristics for search of top-k answers into Tokaf middleware framework prototype. We describe experiments with Tokaf and compare different performance measures with some other methods. (en) Systém doporučující k nejlepších objektů vzhledem k preferencím více uživatelů (cs)
Title	A system recommending top-k objects for multiple users preferences A system recommending top-k objects for multiple users preferences (en) Systém doporučující k nejlepších objektů vzhledem k preferencím více uživatelů (cs)
skos:prefLabel	A system recommending top-k objects for multiple users preferences A system recommending top-k objects for multiple users preferences (en) Systém doporučující k nejlepších objektů vzhledem k preferencím více uživatelů (cs)
skos:notation	RIV/00216208:11320/07:00005163!RIV08-AV0-11320___
http://linked.open.../vavai/riv/strany	1101;1106
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(1ET100300419), P(1ET100300517), Z(MSM0021620838)
http://linked.open...iv/cisloPeriodika	Neuveden
http://linked.open...vai/riv/dodaniDat	2008
http://linked.open...aciTvurceVysledku	Eckhardt, Alan Vojtáš, Peter
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Karlova v Praze / Matematicko-fyzikální fakulta
http://linked.open...dnocenehoVysledku	408251
http://linked.open...ai/riv/idVysledku	RIV/00216208:11320/07:00005163
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	system; recommending; top-k; objects; multiple; users; preferences (en)
http://linked.open.../riv/klicoveSlovo	preferences top-k system multiple objects users recommending
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[51270C3CAA6A]
http://linked.open...i/riv/nazevZdroje	IEEE Fuzzy systems
http://linked.open...in/vavai/riv/obor	JC
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	Methods for Intelligent Systems and Their Applications in Datamining and Natural Language Processing Intelligent Models, Algorithms, Methods and Tools for the Semantic Web (realization)
http://linked.open...UplatneniVysledku	2007
http://linked.open...v/svazekPeriodika	Neuveden
http://linked.open...iv/tvurceVysledku	Vojtáš, Peter Eckhardt, Alan
http://linked.open...n/vavai/riv/zamer	Moderní metody, struktury a systémy informatiky
issn	1098-7584
number of pages	6 (xsd:int)
http://localhost/t...ganizacniJednotka	11320

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