The paper addresses a problem of extraction of semantic information from Czech texts from the Web. The method described in this paper exploits existing linguistic tools created originally for a syntactically annotated corpus, Prague Dependency Treebank (PDT 2.0). We are working on development of a system which captures text of web-pages, annotates it linguistically by linguistic tools, extracts...

BACKGROUND Traditionally, dental models, facial and intra-oral photographs and a set of two-dimensional radiographs are used for orthodontic diagnosis and treatment planning. As evidence is lacking, the discussion is ongoing which specific records are needed for the process of making an orthodontic treatment plan. OBJECTIVE To estimate the contribution and importance of different diagnostic r...

filtering of web pages with inappropriate contents is one of the major issues in the field of intelligent network's security. having a good intelligent filtering method with high accuracy and speed is needed for any country in order to control users' access to the web. so, it has been considered by many researchers. presenting web pages in an understandable way by machines is one of the most im...

The process of retrieving the exact data that is needed by the user is known as Data Extraction. Extracting the exact data from web pages is a complex problem because the data’s in the database present in a complex structure. Many techniques have been proposed but all of them have some limitations because they are web page programming language dependent. In this paper a vision based approach th...

Duplication detection identifies the records that represent the same real-world entity. This is a vital process in data integration. Record matching refers to the task of finding entries that refer to the same entity in two or more files. Performing record matching solves the duplication detection problems; hence the needs for identifying the suitable record matching technique follow. Supervise...

We present a method for extracting product data from e-shops based on annotation tool embedded within web browser. This tool simplifies automatic detection of data presented in tabular and list form. The annotations serve as a basis for extraction rules for a particular web page, which are subsequently used in the product data extraction method.

Web data records are usually accompanied by auxiliary webpage segments, such as filters, sort options, search form, and multi-page links, to enhance interaction efficiency convenience for end users. However, blind visually impaired (BVI) persons presently unable fully exploit the segments like their sighted peers, since these scattered all across screen, assistive technologies used BVI users, i...

The World Wide Web is now undeniably the richest and most dense source of information; yet, its structure makes it difficult to make use of that information in a systematic way. This paper proposes a pattern discovery approach to the rapid generation of information extractors that can extract structured data from semi-structured Web documents. Previous work in wrapper induction aims at learning...