|
|
Web Reader and Library of Articles
Juraszek, Adam ; Svoboda, Martin (advisor) ; Hauzar, David (referee)
Title: Web Reader and Article Library Author: Adam Juraszek Department: Department of Software Engineering Supervisor: RNDr. Martin Svoboda, Department of Software Engineering Abstract: The aim of this thesis is to design and implement a reader web appli- cation, which can watch article sources on the Internet using RSS and Atom feeds. The difference from similar applications is in integration of other services and options: watching websites that do not provide news feeds, backing up web pages, saving articles into user-managed library and a source recommendation system. The application is programmed in Java and consists of three parts: the server part developed on Google AppEngine, the client part using GWT framework and an optional cross-browser extension. The Web reader is designed to work with large amounts of data and can be easily extended. The thesis also contains an analysis of the characteristics of available readers and various recommendation systems. Keywords: web application, RSS reader, AppEngine, GWT 1
|
|
|
Adaptive Similarity of XML Data
Jílková, Eva ; Holubová, Irena (advisor) ; Svoboda, Martin (referee)
In the present work we explore application of XML schema mapping in conceptual modeling of XML schemas. We expand upon the previous efforts to map XML schemas to PIM schema via a decision tree. In this thesis more versatile method is implemented - the decision tree is trained from a large set of user- annotated mapping decision samples. Several variations of training that could improve the mapping results are proposed. The approach is evaluated in a wide range of experiments that show the advantages and disadvantages of the proposed variations of training. The work also contains a survey of different approaches to schema mapping and description of schema used in this work. Powered by TCPDF (www.tcpdf.org)
|
|
|
Semantic Navigator
Michelfeit, Jan ; Knap, Tomáš (advisor) ; Svoboda, Martin (referee)
The Semantic Web extends principles of the Web from documents to data. The Web of Data facilitates machines to understand the meaning of information. Semantic web search engines can take advantage of this fact and offer more precise search results and advanced query capabilities. The aim of this thesis is to use semantic data in web documents in order to enhance navigation between related web pages and bring advantages of semantic web search engines to ordinary users. We present Semantic Navigator as a solution to this task. Semantic Navigator is implemented as a Mozilla Firefox extension. The extension uses the Sindice search service for discovery of related documents and provides access to information summaries on Sig.ma.
|
|
|
Schematron Schema Inference
Kozák, Michal ; Holubová, Irena (advisor) ; Svoboda, Martin (referee)
XML is a popular language for data exchange. However, many XML documents do not have their schema or their schema is outdated. This thesis continues on the field of automatic schema inferring for set of XML documents and focuses on Schematron schema inferring. Schematron is a language that validates XML documents with rules, it does not compare the document against a grammar like DTD, and XML Schema does. Because the field of Schematron schema generation is not so much explored, this thesis analyzes basic problems, suggests several approaches and describes their advantages and disadvantages.
|
|
|
Efficient Detection of XML Integrity Constraints
Švirec, Michal ; Holubová, Irena (advisor) ; Svoboda, Martin (referee)
Title: Efficient Detection of XML Integrity Constraints Author: Michal Švirec Department: Department of Software Engineering Supervisor: RNDr. Irena Mlýnková, Ph.D. Abstract: Knowledge of integrity constraints covered in XML data is an impor- tant aspect of efficient data processing. However, although integrity constraints are defined for the given data, it is a common phenomenon that data violate the predefined set of constraints. Therefore detection of these inconsistencies and consecutive repair has emerged. This work extends and refines recent approaches to repairing XML documents violating defined set of integrity constraints, specif- ically so-called functional dependencies. The work proposes the repair algorithm incorporating the weight model and also involve a user into the process of de- tection and subsequent application of appropriate repair of inconsistent XML documents. Experimental results are part of the work. Keywords: XML, functional dependency, functional dependencies violations, vi- olations repair
|
|
|
GPS tracks data processing and visualization
Dobroucký, Martin ; Bureš, Tomáš (advisor) ; Svoboda, Martin (referee)
The wide spread of GPS devices capable of recording motion tracks has provided a huge amount of GPS track data with lots of information that can be used in various ways. Typical use of the data is to visualize the trajectory, but this is certainly only elementary use of the data. Additional processing, filtering and altering of data can significantly improve their information value. For example identification of popular places or routes, detection and removal of inaccurate parts of tracks, accenting speed or elevation progress on track, etc. The aim of the thesis is to identify and describe best solutions to process and visualize GPS track datasets. That means analysis of a standalone track, mutual comparison of several tracks or identification of characteristics of a large tracks set. The thesis will include a prototype implementation of selected described methods.
|
|
|
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.
|
|
|
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.
|
|
|
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.
|
|
|
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...
|
guest ::
RSS feed.