National Repository of Grey Literature 87 records found  1 - 10nextend  jump to record: Search took 0.00 seconds. 
Current methods of computer face recognition
Krčková, Johana ; Ivánek, Jiří (advisor) ; Dvořák, Jan (referee)
This bachelor thesis deals with methods of computer facial recognition, which is an important field in computer vision. The aim of the thesis is to compare and create a survey of the most well-known face recognition methods, with an emphasis on 2D picture-based methods. In the theoretical part of the thesis, the field of biometrics is first introduced and then the whole process of face recognition is described step by step. Recognition methods are then classified and the procedure, advantages and disadvantages are described for the most significant methods. The practical part of the paper focuses on testing three methods - Eigenfaces, Fisherfaces and LBPH on a small face database called Georgia Tech Face Database. The LBPH method achieved the highest success rate and the Fisherfaces method the lowest.
Invaluable Library Services
Řehák, Tomáš ; Souček, Martin (advisor) ; Ivánek, Jiří (referee) ; Šušol, Jaroslav (referee)
The paper deals with the issue of valuation and calculation of efficiency of public library services. In the introduction the paper explains the motivation for the research undertaken. The first (theoretical) chapter places the whole issue in the general economic and legislative framework, in particular relating libraries to the concept of public goods and describing different approaches to determining their value. It explains the concepts of efficiency and return on investment (ROI). It describes specific approaches to measuring the efficiency of libraries as a whole, with particular attention to the contingent valuation method and its development. It describes in detail several studies that the author considers to be of particular methodological value. The chapter concludes with information and descriptions of two key ISO standards that are directly related to the issue. Chapter 2 describes research on the efficiency of the library as a whole (referred to as ROI 1.0) conducted in 2012 at the Municipal Library in Prague (MKP) and verified in three other cities. Chapter 3 captures the effort to determine the effectiveness of one selected service (ROI 2.0), namely lending services (i.e. circulations of library items). It describes the chosen taxonomy of individual library services and the basic...
Data mining of the database of Consulting centre for metabolism disorders
Senft, Martin ; Ivánek, Jiří (advisor) ; Musil, Vladimír (referee)
This thesis applies the data mining method of decision rules on data from Consulting centre for Metabolism disorders from University hospital Pilsen. As a tool is used the system LISp-Miner, developed at University of Economics, Prague. Decision rules found are evaluated by a specialist. The main parts of this thesis are followings: an overview on main data mining methods and results evalutation methods, description of the data mining method application on data and description and evaluation of results.
Conceptual Structures As a Tool for Knowledge Representation
Ferbarová, Gabriela ; Ivánek, Jiří (advisor) ; Souček, Martin (referee)
(in English): Conceptual graphs are a formal knowledge representation language introduced by John F. Sowa, an American specialist on Artificial Intelligence, at the end of the seventies. They are the synthesis of heuristic and formalistic approach to Artificial Intelligence and knowledge procession. They provide meaning and knowledge in form, which is logically precise, human- readable and untestable, and it is applicable in the computing domain in general. Conceptual graphs can be expressed through a first-order logic, which makes them a quality tool for intelligent reasoning. Their notation CGIF was standardised by norm ISO/IEC 24707:2007 as one of the three dialects of Common logic, which frames the set of logic based on logic. Conceptual graphs are also mappable to knowledge representation languages standardised for the Semantic Web; OWL and RDF (S). This work introduces the conceptual graph theory in the context of scientific fields like linguistics, logic and artificial intelligence. It represents the formalism proposed by John F. Sowa and some extensions that have emerged over the past decades, along with the need for improvements to the representational properties of graphs. Finally, the work provides an illustrative overview of the implementation and use of conceptual graphs in practice....
Knowledge-based systems in medicine
Rybář, Zdeněk ; Ivánek, Jiří (advisor) ; Basl, Josef (referee)
Tato diplomová práce se zabývá problematikou znalostních systémů v oblasti medicíny. Cílem diplomové práce je zpracovat přehled různých typů znalostních/expertních systémů v oblasti medicíny, přiblížit stávající situaci a dále i případné trendy vývoje daných systémů. Práce je členěna do třech tematických celků. První se zabývá obecnou teorií na poli znalostních/expertních systémů , vymezuje základní pojmy, teoretické aspekty a nastiňuje možný budoucí vývoj. Druhý celek se věnuje oblasti medicíny, která je v celé podstatě odlišná svými specifickými vlastnostmi a zákonitostmi oproti jiným vědním oborům. Tato část současně potvrzuje rostoucí trend využívání expertních systémů v lékařské informace. Třetí část rozsáhle popisuje konkrétní aplikace expertních/znalostních systémů v lékařství a rovněž se zabývá specifickou oblastí případového posuzování.
Study of Knowledge and Information Management use in practise
Hodrová, Jitka ; Basl, Josef (advisor) ; Ivánek, Jiří (referee)
The main goal of this master thesis is to investigate and evaluate the use of Knowledge and Information Management in practise. The thesis summarizes the actual tools and principals of Knowledge and Information Management and does research in specific eight institutions with subsequent evaulation of the results and recommendations. A questionary accompanied by an introduction letter and a dictionary of terms were created for the purpose of the research. -- The thesis starts with theoretical description of information and knowledge management. It continues with practical part describing three corporate environments. The main part of the thesis is a research performed by a questionary. -- The questionary comprises of three parts. The first part characterises the questioned subjects and their work environment. The second part focuses on the use of tools and practises for working with data, information and knowledge. The third part documents individual wishes and recommendations of the questioned subjects in respect to more effective use of these tools. -- The results of this research are analyzed and summarized in the conclusion of the thesis, describing which tools and practises are being used. -- Authors of future works in the same area are given possible topics that can be further extended based on this...
File formats for long-term preservation of electronic publications in the e-deposit system in the Czech Republic
Jiroušek, Václav ; Souček, Martin (advisor) ; Ivánek, Jiří (referee)
This bachelor's thesis focuses on selection of archival formats for the purposes of long term preservation of electronic pulications within the Czech e-deposit system. It analyzes the current situation in the Czech Republic and, on the basis of a sample of seven foreign institutions, compares it with foreign approaches and experiences. The first part of the thesis deals with the electronic formats of electronic books on the theoretical side. Based on the market analysis, the formats relevant to the Czech market for electronic publications are identified and the risks of the individual formats are described with regard to the possibilities of their long-term preservation. The second part is devoted to case studies in which the format policies of foreign libraries dealing with long-term archiving of electronic publications are documented. An analysis of electronic publications, voluntarily deposited by the publisher to the NL CR during the pilot operation of the e-deposit system, is also performed. The conclusion of the thesis summarizes the findings in the form of recommendations for archival formats for the further development of the Czech e-deposit system.
Intelligent information retrieval and its trends
Pačísková, Jana ; Papík, Richard (advisor) ; Ivánek, Jiří (referee)
This thesis is focused on information retrieval in the context of its historical development, it presents trends in integration of intelligent features in it, and thus the emergence of intelligent information retrieval. Individual intelligent elements are described in a separate chapter, following chapter then introduces their use, including specific examples. Thesis also traces research on the topic of intelligent information retrieval in selected institutions both in the Czech republic and abroad; results of this survey for Czech republic are presented in the enclosed search.
The analysis of the institutional repositories in the Czech Republic using DSpace system
Kovaříková, Lenka ; Římanová, Radka (advisor) ; Ivánek, Jiří (referee)
The goal of this thesis is to analyze, compare and evaluate available institutional repositories (IR) in Czechia, which are stored in the DSpace system. The development of IR and its circumstances is described through comparison of information available from registry of repositories, journals articles, presentations, and qualitative interviews. Each IR was compared by version, area of expertise, types of stored documents, organization, language mutations, number of records, administration of data entry and data exit processes, system login and user rights. A bigger part of this thesis is dedicated to search options and metadata. As a result of that the analysis of collected data brought a summary of characteristics and system options. It highlighted the positives such as the system integration of repositories, as well as negatives such as overlooking of subject description. The result of the analysis are system atributes and options. brought a summary of the system's features and capabilities. She pointed out the positives as the ability of systematic interconnection of repositories and shortcomings in the form of neglecting the subject description.

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