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The role of similarity in relational databases
Title statement The role of similarity in relational databases [rukopis] / Lucie Ježková Additional Variant Titles Dotazování a datové závislosti v podobnostních databázových systémech Personal name Urbanová, Lucie (dissertant) Translated title Querying and data dependencies in similarity-based database systems Issue data 2015 Note Ved. práce Vilém Vychodil Another responsib. Vychodil, Vilém (thesis advisor) Another responsib. Univerzita Palackého. Katedra informatiky (degree grantor) Keywords relational model of data * similarity * functional dependencies * similarity-based functional dependencies * derivation digraphs * similarity estimates Form, Genre disertace dissertations UDC (043.3) Country Česko Language angličtina Document kind PUBLIKAČNÍ ČINNOST Title Ph.D. Degree program Doktorský Degree program Informatika Degreee discipline Informatika book
Kvalifikační práce Downloaded Size datum zpřístupnění 00170981-733976950.pdf 20 1.6 MB 28.05.2015 Posudek Typ posudku 00170981-ved-397686443.pdf Posudek vedoucího 00170981-opon-118733185.pdf Posudek oponenta Průběh obhajoby datum zadání datum odevzdání datum obhajoby přidělená hodnocení typ hodnocení 00170981-prubeh-267535062.pdf 01.09.2009 28.05.2015 01.10.2015 S 2
In this thesis we study a particular rank-aware relational model over domains with similarities. The model results by generalization of the classical relational model of data by considering residuated lattice (instead of the two-element Boolean algebra) as the basic structure of truth values. We first focus on similarity-based functional dependencies within the model and compare them with other approaches. We also present a~graph-based method of inference and show its application in closures computing. We further study the sensitivity issues and answer questions related to similarity-preservation. We show that the similarity of query results can be estimated from similarity of input data for arbitrary complex queries.
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