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Processing of Incorrect XML Data
Svoboda, Martin
XML documents and related technologies represent widely accepted standard for managing and exchanging semi-structured data. However, surprisingly high number of XML documents is affected by well-formedness errors, structural invalidity or data inconsistencies. The aim of this thesis is the analysis of existing approaches resulting to the proposal of a new correction framework. The introduced model involves repairs of elements and attributes with respect to single type tree grammars. Via the inspection of the state space of an automaton recognising regular expressions, we are always able to find all minimal repairs. These repairs are compactly represented by recursively nested multigraphs, which can be translated to particular sequences of edit operations altering data trees. We have proposed four particular algorithms and provided the prototype implementation supplemented with experimental results. The most efficient algorithm heuristically follows only perspective repair directions and avoids repeated computations using the caching mechanism.
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Inference of an XML Schema with the Knowledge of XML Operations
Mikula, Mário ; Holubová, Irena (advisor) ; Svoboda, Martin (referee)
Recently, plenty of methods dealing with automatic inference of XML schema have been developed, however, most of them utilize XML documents as their only input. In this thesis we focus on extending inference by incorporating XML operations, in particular XQuery queries. We discuss how can XQuery queries help in improving the inference process and we propose an algorithm based on chosen improvements, extending an existing method of a key discovery, that can be integrated to methods inferring so-called initial grammar. By implementing it, we created the first solution of XML schema inference using XML documents along with XML operations.
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Generator of Testing XML Data
Michalko, Jakub ; Holubová, Irena (advisor) ; Svoboda, Martin (referee)
The aim of the thesis is to implement a tool which generates testing XML data according to user defined attributes. The user can use this data for testing applications which work with XML data. The application provides the user with GUI for editing attributes of generated documents whose size can be greater than main storage. Main attributes of generated documents are number of generated documents, fanout, frequency of element/text, generating mixed content, etc. Application can also generate a DTD or XSD document for all generated documents, execute the tested application over generated documents or send generated data to service of tested application.
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Leasing contracts in business relations
Svoboda, Martin ; Plíva, Stanislav (advisor) ; Zahradníčková, Marie (referee) ; Marek, Karel (referee)
In my dissertation I am concerned with the issue of leasing in commercial relationships. Leasing is a legal concept that was taken over from abroad after 1989. A close connection with lease and relatively short legal history are probably the reasons behind the certain degree of heterogeneity of opinions on leasing. And the diverse opinions on leasing were the main reason for my choice of this topic. I was particularly interested in delimitation of leasing in relation to lease and in legal regulation of leasing. At the same time I assumed that despite the difference of opinions the practice of conclusion of leasing agreements will be unified, considering the large volume of leasing agreements concluded in our country each year. The aim of my dissertation was to cover the majority of the main lines of opinion on leasing, make a comparison of leasing and lease and to assess whether it is necessary to apply the statutory regulation of lease on leasing agreements. Another aim of the dissertation was to assess individual components of leasing relationship, i.e. its participants, subject and content (subjective rights and obligations), both on purely theoretical level and in terms of the specifics of leasing as reflected in concrete business terms and conditions. My primary concern during my work on the...
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Processing of Incorrect XML Data
Svoboda, Martin ; Holubová, Irena (advisor) ; Nečaský, Martin (referee)
XML documents and related technologies represent widely accepted standard for managing and exchanging semi-structured data. However, surprisingly high number of XML documents is affected by well-formedness errors, structural invalidity or data inconsistencies. The aim of this thesis is the analysis of existing approaches resulting to the proposal of a new correction framework. The introduced model involves repairs of elements and attributes with respect to single type tree grammars. Via the inspection of the state space of an automaton recognising regular expressions, we are always able to find all minimal repairs. These repairs are compactly represented by recursively nested multigraphs, which can be translated to particular sequences of edit operations altering data trees. We have proposed four particular algorithms and provided the prototype implementation supplemented with experimental results. The most efficient algorithm heuristically follows only perspective repair directions and avoids repeated computations using the caching mechanism.
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Mining XML Integrity Constraints
Fajt, Stanislav ; Nečaský, Martin (advisor) ; Svoboda, Martin (referee)
The most important integrity constraints in XML are primary keys and foreign keys. In general, keys are essential in understanding both the structure and properties of data. They provide an instrument by which va- lues from a given set of attributes uniquely identify tuples in a database. As a result, keys are important to main database operations. Since XML beco- mes lingua franca for data exchange on the web, it is widely accepted as a model of real world data. Because XML documents in general can appear in any semi-structured form, structural constraints (including keys) are often imposed on the data that are to be modified or processed These constra- ints are formally defined in a schema.Unfortunately, in spite of the obvious advantages, the presence of a schema is not mandatory and many XML do- cuments are not joined with any. Consequently, no integrity constratins are specified in those documents, neither. This thesis is mainly focused on the inference of primary and foreign keys from XML documents. 1
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The political business cycle
Svoboda, Martin ; Vlček, Josef (referee) ; Loužek, Marek (advisor)
The main aim of my thesis was to describe the basic resources of political-business cycle and elements which have an influence on it. The tendency to put this phenomenon to a wider context showed us that the political-business cycle is affected by the type of electoral system, increasing power of special interest groups or bureaucratic system. Among the economic elements we can include restrictions of the Government to conduct a monetary policy because of central bank independence. Application of theoretical knowledge to conditions of the Czech Republic proved to be very problematical. Due to the economical transformation the political and economic system in our country demonstrated in non-standard conditions which made the empirical testing of political-business cycle more difficult. In connection with this also comes a problem of short time series which significantly reduces the possibility of any relevant comparison.
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Informational system for cooperation of small groups
Svoboda, Martin ; Pergel, Martin (referee) ; Bílý, Tomáš (advisor)
The main aim of this work is to implement concrete informational system for cooperation and information interchange within small working groups of users and to analyze all aspects which have exposed to be important during the development of this informational system. That means not only to design the structure of relatively complex program, but also to design main concepts of its behaviour and other features, which significantly affect functionality, which is then provided by the system to its users. For example it comprises the draft of user registration model, membership of those users in groups, multilevel hierarchy of user powers or managing user sessions. All those important models are discussed in this work and there are also analyzed their advantages and potential difficulties. The second part of this work contains the description of implementation of all interesting or important parts of the system. It means for example the mechanisms of database queries execution, generating universal paged listings, editing processes and inputs from users, working desktop layout or other functionality provided by the kernel, as well as the description of system sections such as Actions planning, Discussions, Inquiries etc.
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Men as a victims of domestic violence - system of care and help in Czech republic
Svoboda, Martin ; Havelková, Hana (advisor) ; Maříková, Hana (referee)
This diploma thesis is focused on male victims of domestic violence. Firstly the term domestic violence is defined than the characterization of gender aspects of domestic violence followed. In the theoretical part of diploma thesis gender aspects of theoretical conception of domestic violence and empirical survey of domestic violence are also reflected. In the end of theoretical part a fundamental frame for solution to domestic violence cases is defined in Czech context. Empirical part of diploma thesis is answering the question, whether the institutions and organizations, which are working with victims of domestic violence, are prepared and able to help male victims of domestic violence. The critical discourse analyses was applied to answer the same question when three informative texts of organizations supporting victims of domestic violence were examinated.
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